Abstract

The present disclosure discloses a planar magnetic element and a manufacturing method thereof. The planar magnetic element includes: a housing, with an internal space; a core, accommodated in the internal space of the housing, and the core including at least one limb; at least one planar winding corresponding to the limb; and potting adhesive, filled in all air gaps in the internal space of the magnetic element, and blocking the clearance and creepage path between the planar winding and the core and/or between the two planar windings. The present disclosure may significantly reduce the volume of the magnetic element and greatly increase the partial discharge extinction voltage, thereby reducing the partial discharge risk of the magnetic element and improving the reliability. Moreover, the compact structure of the planar magnetic element is conducive to improving the power density of the module.

IPC Classes  ?

• H01F 27/02 - Casings
• H01F 27/24 - Magnetic cores
• H01F 27/32 - Insulating of coils, windings, or parts thereof
• H01F 41/12 - Insulating of windings

Abstract

Motor control architecture including a travel, a hoist, and a controller is disclosed. The travel disposed on a main rail having an auxiliary-encoder includes a master-driver and a slave-driver for driving two motors. Each motor has a main-encoder. The hoist drives a rope and calculates a rope length continuously. The controller calculates an anti-sway position command based on the rope-length and a position command. The two drivers perform a full closed-loop computation based on a feedback of one main-encoder, a feedback of the auxiliary-encoder, and the anti-sway position command. Wherein, the master-driver controls one motor based on a speed command generated by the full closed-loop computation and the slave-driver follows the speed command and a torque command of the master-driver to drive another motor; or the two drivers compensate the torque command based on an error value between the feedback of one main-encoder and the feedback of the auxiliary-encoder.

IPC Classes  ?

• B66C 13/48 - Automatic control of crane drives for producing a single or repeated working cycle; Programme control
• B66C 13/06 - Auxiliary devices for controlling movements of suspended loads, or for preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
• H02P 5/50 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another by comparing electrical values representing the speeds

Abstract

An energy storage module includes a bus connection part, a battery pack, a capacitor and a series compensation DC conversion device. A first conduction terminal of the series compensation DC conversion device is electrically connected with a positive bus connection terminal and a negative bus connection terminal of the bus connection part, or the first conduction terminal is connected with a battery positive terminal and a battery negative terminal of the battery pack. A second conduction terminal of the series compensation DC conversion device is electrically connected with two terminals of the capacitor. A four-quadrant DC/DC converter of the series compensation DC conversion device controls the capacitor to generate a compensation voltage to compensate a voltage between the two terminals of the battery pack, or the four-quadrant DC/DC converter adjusts a current flowing through the battery pack to a set value.

IPC Classes  ?

• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
• H02M 3/00 - Conversion of dc power input into dc power output
• H02M 3/07 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A substrate includes a first insulation layer, a passive component, a first through-hole structure, a second insulation layer and a second electrode. The first insulation layer has a top surface and a bottom surface. The passive component is embedded in the first insulation layer. The passive component includes a first conducting terminal. The first through-hole structure is formed in the first insulation layer. The first through-hole structure includes a conductive part and an insulation part disposed within the conductive part. The conductive part is in contact with the first conducting terminal and formed as a first electrode. The second insulation layer is disposed on portion of the conductive part that is close to the bottom surface of the first insulation layer. At least part of the second electrode is disposed on the second insulation layer. The second electrode is in contact with the first insulation layer.

IPC Classes  ?

• H01F 27/32 - Insulating of coils, windings, or parts thereof
• H01F 27/29 - Terminals; Tapping arrangements
• H01F 41/12 - Insulating of windings
• H02M 3/06 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider

Abstract

The present disclosure provides a cooling system, including an air-cooling device and a water-cooling device. The air-cooling device includes a first fan, an evaporator, a first condenser, and a second fan. The first fan is arranged in a first cooling room and configured to blow a hot air inside a rack into a first cooling room. The evaporator is arranged in the first cooling room. The first condenser is arranged in a second cooling room. The second fan is arranged in the second cooling room and configured to blow an outside air into the second cooling room. The water-cooling device includes a radiator. The radiator is arranged in the second cooling room and configured to receive a hot liquid from an electronic device in the rack through a third pipeline and transmit a cold liquid to the electronic device through a fourth pipeline.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

An energy storage module with bypass circuit is provided. The energy storage module includes a first battery pack, a first capacitor, a bypass circuit and a bidirectional isolated converter. The first capacitor is electrically connected between the positive bus connection terminal and the first positive battery terminal or between the negative bus connection terminal and the first negative battery terminal. The bypass circuit is electrically connected to two terminals of the first capacitor. The first positive and negative connection terminals of the bidirectional isolated converter are electrically connected to the positive and negative bus connection terminals respectively or are electrically connected to the first positive and negative battery terminals respectively. The second positive and negative connection terminals of the bidirectional isolated converter are electrically connected to the two terminals of the first capacitor respectively. When the energy storage module enters a bypass mode, the bypass circuit bypasses the first capacitor.

IPC Classes  ?

• H02J 7/34 - Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

An electrical connector includes a housing having a front end and a rear end, an insulator including a tongue portion disposed at the front end and a base disposed at the rear end, and plural terminals including plural ground terminals, plural power terminals and plural signal terminals. Each of the plural terminals has a first contact portion, a second contact portion and a connection portion connecting the first contact portion with the second contact portion. The first contact portions are disposed on surfaces of the tongue portion in a widthwise direction perpendicular to a direction from the front end to the rear end, and the second contact portions are extended out from the base. Widths in the widthwise direction of the second contact portions of the plural ground terminals and the plural power terminals are larger than a width of the first contact portion respectively thereof.

IPC Classes  ?

• H01R 24/60 - Contacts spaced along planar side wall transverse to longitudinal axis of engagement
• H01R 13/53 - Bases or cases for heavy duty; Bases or cases with means for preventing corona or arcing
• H01R 13/652 - Protective earth or shield arrangements on coupling devices with earth pin, blade or socket

Abstract

An immersion cooling system is provided. It includes a pressure seal tank, an electronic module, a blower, and a distributor plate. The pressure seal tank contains a cooling liquid, and a gas outlet is disposed on the top or a sidewall of the pressure seal tank, a gas inlet is disposed on the bottom of the pressure seal tank. The gas outlet is higher than the liquid level of the cooling liquid. The electronic module is disposed in the pressure seal tank and immersed in the cooling liquid. The blower is communicated with the pressure seal tank and configured to extract the gas from the gas outlet and inject the gas into the pressure seal tank via the gas inlet. The distributor plate is disposed in the pressure seal tank and located between the electronic module and the gas inlet.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

A bi-level dimming LED power supply equipment adjusts the brightness of a plurality of LED lights according to whether an external detection switch is triggered turned on. The LED power supply equipment includes a plurality of LED power supplies, and the LED power supplies respectively include an input end and an output end. The input end receives an input voltage, and the output end includes a bus positive end, a bus negative end and a dimming end. The dimming end is commonly coupled to a first end of the external detection switch, and one of the bus positive end or the bus negative end is commonly coupled to a second end of the external detection switch and one end of the LED lights, and the other one of the bus positive end or the bus negative end is respectively coupled to the other ends of the LED lights.

IPC Classes  ?

• H05B 45/10 - Controlling the intensity of the light
• H05B 45/355 - Power factor correction [PFC]; Reactive power compensation

Abstract

A heat exchanger is provided, including a first case, a second case, a substrate, an engaging structure, an evaporator, a condenser, a first tube, and a second tube. The first case includes a first plate structure and a first protruding structure. The first plate structure has a first inner surface. The first protruding structure protrudes from the first inner surface. The second case includes a second plate structure and a second protruding structure. The second plate structure has a second inner surface. The second protruding structure protrudes from the second inner surface. The substrate is engaged with the first inner surface, the first protruding structure, the second inner surface, and the second protruding structure via the engaging structure. The substrate is in contact with at least three different lateral surfaces of the engaging structure so that the substrate and the first case combine are bonded.

IPC Classes  ?

• F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes

Abstract

The present disclosure provides a power control system for motor preheating including a current sensor, a power calculation module, a power error calculation module, a power control module, a current control module and a voltage control module. The current sensor senses a motor current output by the motor. The power calculation module calculates an output power of the motor according to the voltage command and the motor current. The power error calculation module calculates a power error according to a power command and the output power. The power control module outputs a current braking command according to the power error. The current control module calculates a voltage command according to the current braking command and the motor current. The voltage control module outputs a three-phase voltage according to the voltage command, and the motor is operated in a stationary state, and the stator of the motor is preheated.

IPC Classes  ?

• G01R 21/02 - Arrangements for measuring electric power or power factor by thermal methods
• G01R 21/06 - Arrangements for measuring electric power or power factor by measuring current and voltage

Abstract

A blind insert fluid connection module includes a first fluid connector located on a first assembly and a second fluid connector located on a second assembly. The second fluid connector is used to engage the first fluid connector in a first direction to form a fluid channel. The second assembly includes a main body, a guide structure, and a cushioning resilient member. The fastening member is located on the main body. The guide structure is located on the main body, and the second fluid connector is fixed on the guide structure. The cushioning resilient member is connected to the guide structure to provide a buffer displacement of the second fluid connector along the second direction when the first and second fluid connectors are joined, wherein an included angle is formed between the second direction and the first direction.

IPC Classes  ?

• F16L 37/00 - Couplings of the quick-acting type
• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

A LED power supply with bi-level dimming receives an input voltage to supply power to an LED lamp, and adjusts the brightness of the LED lamp according to whether an external detection switch is triggered to be turned on. The LED power supply includes a conversion circuit, a switch, and an oscillation circuit. The conversion circuit converts the input voltage into an output voltage, and provides the output voltage to supply power to the LED lamp so as to control the LED lamp to provide a first brightness. The oscillation circuit provides a dimming signal with a fixed frequency and a duty cycle to the switch when the external detection switch is turned on so as to turn on and turn off the switch. The switch correspondingly adjusts the output voltage according to the dimming signal to control the LED lamp to provide a second brightness.

IPC Classes  ?

• H05B 45/10 - Controlling the intensity of the light
• H05B 45/3725 - Switched mode power supply [SMPS]

Abstract

A connector assembly includes a base, a wire unit, and a wire fixing unit. The base includes a body and two side wings. The two side wings are respectively rotatably connected to two opposite sides of the body, and each of the side wings includes a first fixing portion. The wire unit is located between the two side wings. The wire unit includes a connection seat disposed in the body, and various wires disposed in the connection seat and protruding from one side of the connection seat. The wire fixing unit includes two second fixing portions and various through holes, in which the through holes are located between the two second fixing portions, the two first fixing portions respectively clamp the two second fixing portions, and the wires correspondingly pass through the through holes.

IPC Classes  ?

• H01R 13/514 - Bases; Cases formed as a modular block or assembly, i.e. composed of co-operating parts provided with contact members or holding contact members between them
• H01R 4/28 - Clamped connections; Spring connections
• H01R 9/03 - Connectors arranged to contact a plurality of the conductors of a multiconductor cable
• H01R 13/516 - Means for holding or embracing insulating body, e.g. casing
• H01R 13/627 - Snap-action fastening

Abstract

A magnetic device includes a magnetic core and at least two windings. The magnetic core includes an annular main body and a hollow portion. Each of the at least two windings includes a coil with a plurality of turns. Each turn of the coil penetrates through the hollow portion and is disposed around the annular main body. The at least two windings are disposed around the annular main body to form at least three winding regions. Each of the winding regions except a winding region which is last formed has at least three winding layers stacked up one by one. The number of the winding layers of the winding regions except the winding region which is last formed is odd and greater than or equal to three.

IPC Classes  ?

• H01F 27/28 - Coils; Windings; Conductive connections
• H01F 27/24 - Magnetic cores
• H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
• H01F 27/32 - Insulating of coils, windings, or parts thereof

Abstract

An integrated motor and drive assembly is disclosed and includes a housing, a motor and a drive. The housing includes a motor-accommodation portion and a drive-accommodation portion. The drive includes a power board and a control board. The power board is made of a high thermal conductivity substrate and includes a power element and an encoder disposed on the first side, the first side faces the motor, the power board and the motor are stacked along a first direction, and the second side contacts the housing to from a heat-dissipating route. The control board is disposed adjacent to the power board. The control board and the power board are arranged along a second direction perpendicular to the first direction, and the first direction is parallel to an axial direction of the motor. A part of the power board and a part of the control board are directly contacted to form an electrical connection.

IPC Classes  ?

• H02K 11/30 - Structural association with control circuits or drive circuits
• H02K 3/28 - Layout of windings or of connections between windings
• H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes

Abstract

A report editing method for a supervisory control and data acquisition (SCADA) system is disclosed and includes following steps: when a window interface is triggered to open, determining whether a binding label exists in a register of a variable library of the SCADA system; if the binding label exists, reading report data corresponding to the binding label from an edited-data file to import the report data into the window interface; if the binding label does not exist, obtaining multiple report items through the window interface to create and store new report data to the edited-data file; and writing a new binding label corresponding to the new report data to the variable library to bind the window interface with the new report data.

IPC Classes  ?

• G06F 16/242 - Query formulation
• G06F 16/21 - Design, administration or maintenance of databases

Abstract

A planar transformer includes a magnetic core assembly, at least one printed circuit board and at least one winding module. The magnetic core assembly includes a first magnetic core and a second magnetic core. The at least one printed circuit board is disposed between the first magnetic core and the second magnetic core. The printed circuit board includes a first winding. The at least one winding module is disposed between the first magnetic core and the second magnetic core. The winding module includes a second winding and a plastic molding layer. At least a portion of the second winding is covered by the plastic molding layer. The at least one printed circuit board and the at least one winding module are individual components.

IPC Classes  ?

• H01F 27/28 - Coils; Windings; Conductive connections
• H01F 27/24 - Magnetic cores
• H01F 27/29 - Terminals; Tapping arrangements
• H05K 1/18 - Printed circuits structurally associated with non-printed electric components

Abstract

A method of obtaining a parameter of a synchronous motor is disclosed and includes: setting an operating current of the motor; providing a positive fixed voltage to the motor and monitoring a feedback current from the motor; recording a triggering time for the feedback current to reach the operating current; providing a negative fixed voltage to the motor for the triggering time; obtaining a square-wave voltage with a fixed frequency based on the positive fixed voltage and the negative fixed voltage being provided; providing the square-wave voltage with the fixed frequency to one axis of the motor; transforming three-phase current from the motor into an axial current; computing an inductance value of this axis based on the fixed frequency, the square-wave voltage and the axial current; and, creating an inductance-current parameter table based on a plurality of the inductance values and the axial currents correspondingly.

IPC Classes  ?

• H02P 21/22 - Current control, e.g. using a current control loop
• H02P 21/14 - Estimation or adaptation of machine parameters, e.g. flux, current or voltage

Abstract

A Totem Pole PFC circuit includes at least one fast-switching leg, a slow-switching leg, and a control unit. Each fast-switching leg includes a fast-switching upper switch and a fast-switching lower switch. The slow-switching leg is coupled in parallel to the at least one fast-switching leg, and the slow-switching leg includes a slow-switching upper switch and a slow-switching lower switch. The control unit receives an AC voltage with a phase angle, and the control unit includes a current detection loop, a voltage detection loop, and a control loop. The control loop generates a second control signal assembly to respectively control the slow-switching upper switch and the slow-switching lower switch. The control loop controls the second control signal assembly to follow the phase angle, and dynamically adjusts a duty cycle of the second control signal assembly to turn on or turn off the slow-switching upper switch and the slow-switching lower switch.

IPC Classes  ?

• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion

Abstract

A power conversion circuit for driving motor and a control method thereof are provided. The control method includes: comparing a control command with a carrier wave to acquire a PWM signal; identifying whether a phase difference between the output voltage and current falls within a range; if the phase difference falling within the range, determining whether a zero-sequence voltage is positive or negative according to the output voltage and current; injecting the zero-sequence voltage into the control command to acquire a synthesized command, and detecting maximum and minimum voltage values of the synthesized command after a period; according to the zero-sequence voltage determined to be positive or negative, selecting the maximum or minimum voltage value to perform a logic reversal operation; after stopping injecting the zero-sequence voltage, acquiring an output expected value; and comparing the output expected value with the carrier wave for adjusting a duty ratio of PWM signal.

IPC Classes  ?

• H02M 7/5395 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
• H02M 7/5387 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
• H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation

Abstract

An ORing FET control circuit and method are provided. The circuit includes an ORing FET, a comparator, first, second and third resistors, a first capacitor, a diode and a driving unit. The positive and negative input terminals of the comparator are electrically connected to the input and output voltages. The first resistor, the second resistor, the first capacitor, and the third resistor are electrically connected in series between a reference voltage and a ground terminal sequentially. The reference voltage is lower than a voltage at the positive input terminal. When the input voltage is lower than the output voltage, if a voltage across the ORing FET is larger than a threshold, the comparator outputs a driving signal at low level, and correspondingly the driving unit turns off the ORing FET. The threshold depends on resistances of the first and second resistors.

IPC Classes  ?

• H03K 17/06 - Modifications for ensuring a fully conducting state
• H03K 17/041 - Modifications for accelerating switching without feedback from the output circuit to the control circuit
• H03K 17/30 - Modifications for providing a predetermined threshold before switching

Abstract

A totem-pole PFC circuit and a control method thereof are provided. The circuit includes an AC power source, first and second bridge arms and a controller. The first bridge arm includes first and second switches electrically connected in series with a connection node electrically connected to a first terminal of the AC power source. The second bridge arm includes third and fourth switches electrically connected in series with a connection node electrically connected to a second terminal of the AC power source. When a potential at the first terminal is higher than a potential at the second terminal, the controller turns off the fourth switch if the L-phase voltage is lower than a first threshold voltage. When the potential at the first terminal is lower than the potential at the second terminal, the controller turns off the third switch if the L-phase voltage is higher than a second threshold voltage.

IPC Classes  ?

• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
• H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

Abstract

An impeller is provided, including a metal housing, a shaft, and a plastic member. The metal housing has a shaft mounting hole. The inner surface of the shaft mounting hole includes three or more contact points, and the contact points are closer to the shaft than other portions of the inner surface of the shaft mounting hole. The shaft passes through the shaft mounting hole and is affixed by the contact points. The metal housing divides the shaft into an upper section, a middle section, and a lower section. The plastic member passes through the shaft mounting hole and is in contact with the middle section.

IPC Classes  ?

• F04D 29/26 - Rotors specially adapted for elastic fluids
• F04D 17/08 - Centrifugal pumps
• F04D 19/00 - Axial-flow pumps specially adapted for elastic fluids
• F04D 29/02 - Selection of particular materials
• F04D 29/054 - Arrangements for joining or assembling shafts
• F04D 29/32 - Rotors specially adapted for elastic fluids for axial-flow pumps
• F04D 29/52 - Casings; Connections for working fluid for axial pumps

Abstract

A dual mode charge control method includes steps of: detecting an input voltage of the resonance tank, a resonance current of the resonance tank, an output current of the load, and an output voltage of the load; performing a single-band charge control when determining a light-load condition or a no-load condition of the load according to the output current; compensating the output voltage to generate an upper threshold voltage in the single-band charge control, and acquiring a resonance voltage by calculating the resonance current by a resettable integrator; comparing the resonance voltage and the upper threshold voltage to generate a first control signal; generating a second control signal complementary to the first control signal by a pulse-width modulation duplicator; providing the first control signal and the second control signal to respectively control a first power switch and a second power switch of the resonance circuit.

IPC Classes  ?

• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
• H02M 3/00 - Conversion of dc power input into dc power output

Abstract

An electronic component with high coplanarity, including a body with a functional circuit and a mounting plane, a first electrode with a first area deposited on the mounting plane, and a second electrode with a second area deposited on the mounting plane, wherein the first area is larger than the second area, and the first electrode and the second electrode includes a conductive layer and at least one first plating layer over the conductive layer, and a thickness of the conductive layer of the first electrode is smaller than a thickness of the conductive layer of the second electrode, and a thickness of the first plating layer of the first electrode is larger than a thickness of the first plating layer of the second electrode.

IPC Classes  ?

• H01L 23/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details of semiconductor or other solid state devices
• H01Q 1/48 - Earthing means; Earth screens; Counterpoises
• H01Q 9/04 - Resonant antennas

Abstract

The present disclosure provides a control method of a charging system. The control method includes: providing a charging chip, wherein the charging chip is configured to charge a chargeable device, and the charging chip performs a wake-up task with a wake-up period during a standby mode; performing a plurality of wake-up subtasks in the wake-up task; and according to the priority of each of the plurality of wake-up subtasks, setting a corresponding working cycle of each wake-up subtasks, wherein the charging chip performs each of the wake-up subtasks with the corresponding working cycle, and the wake-up subtasks with different priorities have different working cycles.

IPC Classes  ?

• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A power supply system includes a system board electrically connected to a load; a first package and a second package provided on an upper side of the system board; and a bridge member provided on upper sides of the first package and the second package, comprising a passive element and used for power coupling between the first package and the second package, wherein vertical projections of the first package and the second package on the system board are both overlapped with a vertical projection of the bridge member on the system board, the first package, and the second package are encapsulated with switching devices, terminals on upper surfaces of the first package and the second package are electrically connected to the bridge member, and terminals on lower surfaces thereof are electrically connected to the system board.

IPC Classes  ?

• H01L 25/10 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices having separate containers
• H01L 23/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details of semiconductor or other solid state devices
• H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
• H01L 23/367 - Cooling facilitated by shape of device
• H01L 23/538 - Arrangements for conducting electric current within the device in operation from one component to another the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
• H01L 23/64 - Impedance arrangements

Abstract

A rotor structure includes a laminated silicon steel sheet structure, end plates, a shaft and a thermoset plastic key. Each silicon steel sheet includes a shaft hole and at least one sheet matching portion, and the sheet matching portion is connected to the shaft hole. The shaft passes through the shaft holes of the silicon steel sheets and the at least one shaft matching portions aligned with the at least one sheet matching portion to form an axial-direction injection passageway. The end plate includes an injection port connected to the axial-direction injection passageway. The thermoset plastic key is formed in the axial-direction injection passageway formed of the aligned shaft matching portions and sheet matching portion by transfer injection molding. The injection material is filled in magnet slots for securing magnets. A rotor manufacturing process is also provided.

IPC Classes  ?

• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
• H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
• H02K 15/03 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
• H02K 15/12 - Impregnating, heating or drying of windings, stators, rotors or machines

Abstract

A magnetic component includes a core, a winding, a lead frame and a conductive material. The winding is disposed in the core. A winding end of the winding extends to an outer periphery of the core. The lead frame is disposed on the outer periphery of the core. At least one hole is formed on the lead frame and corresponds to the winding end. The conductive material is disposed in the at least one hole. The conductive material is in contact with the winding end.

IPC Classes  ?

• H01F 27/28 - Coils; Windings; Conductive connections
• H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
• H01F 37/00 - Fixed inductances not covered by group
• H01F 41/10 - Connecting leads to windings

Abstract

A power system includes a power module, an electronic load and a system board. The power module includes a first surface, a second surface, a switch and a plurality of conductive parts, wherein the switch is disposed on the first surface of the power module and the plurality of conductive parts are disposed on the second surface of the power module. The electronic load includes a plurality of conductive parts. The power module and the electronic load are disposed on two opposite sides of the system board, the power module delivers power to the electronic load through the system board, and gaps and networks of the plurality of conductive parts of the power module correspond to those of the plurality of conductive parts of the electronic load.

IPC Classes  ?

• H01F 27/28 - Coils; Windings; Conductive connections
• G05F 1/575 - Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices characterised by the feedback circuit
• G06F 1/18 - Packaging or power distribution
• H01F 17/04 - Fixed inductances of the signal type with magnetic core
• H01F 17/06 - Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
• H01F 27/02 - Casings
• H01F 27/24 - Magnetic cores
• H01F 27/29 - Terminals; Tapping arrangements
• H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different main groups of groups , or in a single subclass of , , e.g. forming hybrid circuits
• H01R 12/52 - Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
• H01R 12/58 - Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
• H02M 3/00 - Conversion of dc power input into dc power output
• H02M 3/158 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H05K 1/02 - Printed circuits - Details
• H05K 1/11 - Printed elements for providing electric connections to or between printed circuits
• H05K 1/14 - Structural association of two or more printed circuits
• H05K 1/16 - Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
• H05K 1/18 - Printed circuits structurally associated with non-printed electric components
• H05K 3/28 - Applying non-metallic protective coatings
• H05K 7/14 - Mounting supporting structure in casing or on frame or rack
• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

A sealing mechanism is provided, including a housing, a groove, and a sealing element. The housing includes a first member and a second member, and the groove is formed between the first and second members. The sealing element is formed in the groove by Low Pressure Molding (LPM) and surrounds at least one of the first and second members.

IPC Classes  ?

• F16J 15/44 - Free-space packings
• F16J 15/02 - Sealings between relatively-stationary surfaces

Abstract

A composite conductive structure includes plural enameled wires and a copper foil. The enameled wires are immediately adjacent to each other and extend in the same direction. The copper foil surrounds the outside of the enameled wires at least once, and completely covers the entire outside of the enameled wires.

IPC Classes  ?

• H01B 7/00 - Insulated conductors or cables characterised by their form
• H01B 1/02 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys

Abstract

A magnetic member includes a bobbin, a coil and a magnetic core. The bobbin includes a first portion and a second portion. The second portion is connected to the first portion and includes a thermoplastic material. The first portion includes an insulating material that is different from the thermoplastic material. The coil is wound on the first portion of the bobbin and includes a terminal end fixed at the second portion of the bobbin. The magnetic core is disposed on the bobbin and extends through the bobbin.

IPC Classes  ?

• H01F 27/32 - Insulating of coils, windings, or parts thereof
• H01F 5/04 - Arrangements of electric connections to coils, e.g. leads
• H01F 27/24 - Magnetic cores
• H01F 27/29 - Terminals; Tapping arrangements

Abstract

A high-throughput automated preprocessing method and a system are applied to a nucleic acid preprocessing apparatus including a control system, a sample transfer area, a nucleic acid extraction area, and a reagent setup area. The control system includes a user interface and guides a user to set up on the user interface. In the sample transfer area, the method includes steps of: a user selecting a sampling tube type, a test protocol and an extraction protocol on the user interface, and the control system performing a sample transfer task. In the nucleic acid extraction area, the method includes steps of: the control system performing a nucleic acid extraction task based on the selected extraction protocol. In the reagent setup area, the method includes steps of: the control system performing a reagent deployment task based on the selected test protocol, and the control system performing a nucleic acid transfer task. The sample transfer area, the nucleic acid extraction area, and the reagent setup area are able to simultaneously perform preprocessing of different batches of samples.

IPC Classes  ?

• C12Q 1/6806 - Preparing nucleic acids for analysis, e.g. for polymerase chain reaction [PCR] assay
• G01N 35/00 - Automatic analysis not limited to methods or materials provided for in any single one of groups ; Handling materials therefor
• G01N 35/04 - Automatic analysis not limited to methods or materials provided for in any single one of groups ; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations - Details of the conveyor system

Abstract

A combinable nucleic acid pre-processing apparatus includes a sample transfer chamber transferring a sample from a sampling tube to a nucleic acid extraction kit, a nucleic acid extraction chamber performing a nucleic acid extraction of the sample in the nucleic acid extraction kit for obtaining a nucleic acid extract, an assay setup chamber preparing reagents and transferring reagents and the nucleic acid extract to an assay plate, and at least two bridging modules respectively disposed between the sample transfer chamber and the nucleic acid extraction chamber and between the nucleic acid extraction chamber and the assay setup chamber. The sample transfer chamber, the nucleic acid extraction chamber and the assay setup chamber are separated and operated independently. Three chambers are connected through the bridging modules, so the nucleic acid extraction kit can be sequentially moved in the sample transfer chamber, the nucleic acid extraction chamber and the assay setup chamber.

IPC Classes  ?

• B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers

Abstract

The present disclosure discloses a method and a system for controlling a switching power supply, the switching power supply comprising a power factor correction circuit which comprises at least one electrolytic capacitor, the method comprising: detecting a ripple voltage of the electrolytic capacitor; controlling an actual output power of the switching power supply to be equal to a reference output power based on the ripple voltage of the electrolytic capacitor, wherein the reference output power equals to a compensated output power or an upper limit output power, and wherein the compensated output power is obtained by comparing the ripple voltage of the electrolytic capacitor with a reference voltage and subjecting to a compensation calculation. The reference output power is a smaller one of the compensated output power and the upper limit output power.

IPC Classes  ?

• H02M 1/14 - Arrangements for reducing ripples from dc input or output
• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters

Abstract

A fan includes a fan frame and a driving device. The fan frame includes a base, a frame shell and static blades arranged on the periphery of the base. The driving device includes a stator structure and a rotor structure. The stator structure includes a stator magnetic pole group and a bushing. The rotor structure includes a bearing, a shaft, a rotor shell, a magnetic structure, a magnetic shell and blades. The shaft is connected with the rotor shell and disposed through the bearing. The stator magnetic pole group magnetically drives the magnetic structure to rotate the rotor shell. Two ends of the frame shell are configured with two turning portions, respectively. The two turning portions are disposed between parts of the frame shell with different curvatures. A curvature of the first turning portion is larger than a curvature of the second turning portion.

IPC Classes  ?

• F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
• F04D 17/06 - Helico-centrifugal pumps
• F04D 19/02 - Multi-stage pumps
• F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
• F04D 29/42 - Casings; Connections for working fluid for radial or helico-centrifugal pumps
• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• G06F 1/20 - Cooling means
• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

A motor drive system includes an electric motor, a drive circuit and a control unit. The drive circuit provides a driving current to the electric motor. A current command generator of the control unit generates a current command according to a torque command and a motor operating information. The driving current is converted into a d-axis current and/or a q-axis current by the control unit. Consequently, the driving current is close to the d-axis current command and/or the q-axis current command corresponding to the current command. If a value of the torque command is positive, the current command generator generates the corresponding current command according to a MTPA lookup table. If the value of the torque command is negative, the current command generator generates the corresponding current command according to a zero recycle lookup table.

IPC Classes  ?

• H02P 21/22 - Current control, e.g. using a current control loop
• H02P 21/20 - Estimation of torque

Abstract

A working fluid recovery device includes an air moving unit, a water removal unit, a working fluid recovery unit, a condenser, and a working fluid collection tank. The air moving unit is configured to suck in a mixed gas including a non-condensable gas, a steam and a vapor phase of working fluid. The water removal unit is connected to the air moving unit, and configured to remove the steam. The working fluid recovery unit is connected to the water removal unit, and configured to recover the vapor phase of the working fluid and exhaust the non-condensable gas. The condenser is connected to the working fluid recovery unit, and configured to condense the vapor phase of the working fluid into a liquid phase of the working fluid. The working fluid collection tank is connected to the condenser, and configured to store the liquid phase of the working fluid.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

The present disclosure provides an isolated multi-phase DC/DC converter with a reduced quantity of blocking capacitors. In one aspect, the converter includes a multi-phase transformer having a primary circuit and a secondary circuit magnetically coupled to the primary circuit, the primary circuit having a first quantity of terminals, and the secondary circuit having a second quantity of terminals; a third quantity of blocking capacitors, each being electrically connected in series to a respective one of the terminals of the primary circuit; and a fourth quantity of blocking capacitors, each being electrically connected in series to a respective one of the terminals of the secondary circuit. The third quantity is one less than the first quantity. The fourth quantity is one less than the second quantity.

IPC Classes  ?

• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
• H02M 1/40 - Means for preventing magnetic saturation
• H02M 3/00 - Conversion of dc power input into dc power output

Abstract

This disclosure is a condensate evaporation device. An air conditioning apparatus includes a compressor, an evaporator and a condenser connected with one another. A water tray is arranged to receive the condensate. A water distribution module includes a water separator base and a water separator piece. The water separator piece and the water separator base are combined to define a water channel. The condensate flows through the water channel to evenly flow out. A multi-folded water absorbing body is arranged on one side of the water separator base to absorb the condensate flowed out from the water separator base. The water tank is arranged on a bottom side of the multi-folded water absorbing body. A fan is arranged on one side of the multi-folded water absorbing body. Accordingly, the condensate may be evaporated efficiently.

IPC Classes  ?

• F24F 13/22 - Means for preventing condensation or evacuating condensate

Abstract

A switch short-circuited diagnosis method includes steps of: determining an initial voltage interval of multiple voltage intervals according to voltage relationships between voltages of a first phase wire, a second phase wire, and a third phase wire; performing a switch short-circuited diagnosis of a first bidirectional switch module in the three consecutive voltage intervals from the initial voltage interval, and including steps of: turning on a first switch branch, a second switch branch, or a third switch branch of the first bidirectional switch module according to the voltage relationships between the voltages of the first, second and third phase wires, determining whether an overcurrent occurs to diagnose whether the first switch branch, the second switch branch, or the third switch branch of the first bidirectional switch module is in a short-circuited state, and performing the switch short-circuited diagnosis for the next voltage interval.

IPC Classes  ?

• G01R 31/26 - Testing of individual semiconductor devices
• G01R 31/52 - Testing for short-circuits, leakage current or ground faults
• H02M 5/458 - Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

An immersion cooling system includes a pressure seal tank, an electronic apparatus, a pressure balance pipe and a relief valve. The pressure seal tank is configured to store coolant. A vapor space is formed in the pressure seal tank above the liquid level of the coolant. The electronic apparatus is completely immersed in the coolant. The pressure balance pipe has a gas collection length. The first port of the pressure balance pipe is disposed on the top surface of the pressure seal tank. The relief valve is disposed on the second port of the pressure balance pipe. The second port is farther away from the top surface of the pressure seal tank than the first port. The gas collection length of the pressure equalization tube allows the concentration of vaporized coolant at the first port to be greater than the concentration of vaporized coolant at the second port.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

A wavelength conversion member includes a substrate, a phosphor layer, and a non-ventilated blade. The substrate is configured to rotate based on an axis. The phosphor layer is disposed on the substrate. The non-ventilated blade has a roughness between 5 μm and 1.25 mm, or a specific surface area of the non-ventilated blade exceeds a geometric area of the non-ventilated blade by more than 10%.

IPC Classes  ?

• H01L 33/50 - Wavelength conversion elements

Abstract

The present disclosure provides a human machine interface panel including a main body and a fixing device. The main body includes a housing and a first contact surface. The fixing device includes a base, a self-tapping screw and a bottom base. The base is detachably connected to the housing and has a mounting hole. The self-tapping screw penetrates through the mounting hole and has an interference fit to the mounting hole. The bottom base is disposed at an end of the self-tapping screw. By disposing a plate between the bottom base and the first contact surface, and tightening the self-tapping screw, the plate is clamped by the bottom base and the first contact surface. Consequently, the human machine interface panel is fixed to the plate.

IPC Classes  ?

• E05C 19/18 - Portable devices specially adapted for securing wings
• F16B 25/10 - Screws performing an additional function to thread-forming, e.g. drill screws

Abstract

The present disclosure provides a magnetic component and a power module, relating to the technical field of power electronics; the magnetic component provided by the present disclosure includes: a first heat sink, a magnetic core extending in a transverse direction and a winding structure wound on the magnetic core, the winding structure includes at least a first coil and a second coil arranged adjacently along the transverse direction, a gap is provided between the first coil and the second coil, at least part of the first heat sink is arranged in the gap, the first heat sink is in thermal contact with the first coil, the second coil and the magnetic core.

IPC Classes  ?

• H01F 27/22 - Cooling by heat conduction through solid or powdered fillings
• B60L 53/122 - Circuits or methods for driving the primary coil, i.e. supplying electric power to the coil
• H01F 27/24 - Magnetic cores
• H01F 27/32 - Insulating of coils, windings, or parts thereof

Abstract

A PCB pad for a SMT process is combined on a PCB. The PCB pad includes an insulation body and a metal reflow portion disposed on the insulation body. The metal reflow portion is located on the side of the insulation body adjacent to the PCB. The metal reflow portion is not electrically connected with the PCB. Thus, the PCB pad may support electronic components of the PCB and prevent the electronic components from being damaged by an external pressure.

IPC Classes  ?

• H05K 1/11 - Printed elements for providing electric connections to or between printed circuits
• H05K 1/18 - Printed circuits structurally associated with non-printed electric components

Abstract

An electronic transformer includes a first forward rectifier, a second forward rectifier, a third forward rectifier and a backward rectifier. The first forward rectifier is coupled between a first-phase power and a first output terminal. The second forward rectifier is coupled between a second-phase power and the first output terminal. The third forward rectifier is coupled between a third-phase power and the first output terminal. The backward rectifier is coupled between a neutral line and a second output terminal. The first forward rectifier, the second forward rectifier, and the third forward rectifier are configured to half-wave rectify the first-phase power, the second-phase power, and the third-phase power to generate rectified first-phase to third-phase power sources, and superimpose the rectified first-phase to third-phase power sources on the first output end to serve as an output voltage of the electronic transformer.

IPC Classes  ?

• H02M 7/217 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/219 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters

Abstract

A dual power switching system includes a first STS, a second STS, an inductive device, and a controller. The first STS is electrically coupled to a main power source, and the second STS is electrically coupled to a backup power source. When detecting that the main power source is abnormal, the controller detects a residual magnetic flux of the inductive device and calculates a magnetic flux difference between the predicted magnetic flux and the residual magnetic flux. When determining that an absolute value of the magnetic flux difference is less than or equal to a magnetic flux deviation value, the controller determines whether the output power meets a forced commutation condition. When determining that the output power meets the forced commutation condition, the controller turns on the second STS so that the first STS is forcibly turned off by the backup power source through the second STS.

IPC Classes  ?

• H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
• G01R 33/02 - Measuring direction or magnitude of magnetic fields or magnetic flux
• G01R 31/40 - Testing power supplies

Abstract

A fan housing is disclosed and includes a barrel body and a fixing plate. The barrel body includes a first end, a second end and a hollow portion. The first end and the second end are two opposite ends, and the hollow portion is in communication between the first end and the second end, and configured to accommodate a fan motor. The fixing plate includes a plurality of splicing elements. Each two adjacent ones of the plurality of splicing elements are connected to each other. The plurality of splicing elements are disposed around the barrel body and connected to the first end or the second end.

IPC Classes  ?

• F04D 29/52 - Casings; Connections for working fluid for axial pumps
• F04D 29/64 - Mounting; Assembling; Disassembling of axial pumps
• F04D 19/00 - Axial-flow pumps specially adapted for elastic fluids
• F04D 29/70 - Suction grids; Strainers; Dust separation; Cleaning

Abstract

The present disclosure provides a transformer module and a power module, wherein the transformer module comprises: a magnetic core, where a first insulating layer and a second wiring layer are sequentially disposed on the magnetic core from inside to outside; a first metal winding, wound around the magnetic core and comprising a first winding segment formed in the first wiring layer and a second winding segment formed in the second wiring layer; and a second metal winding, wound around the magnetic core and comprising a third winding segment formed in the first wiring layer and a fourth winding segment formed in the second wiring; where at least part of the first metal winding and the second metal winding are wound around the magnetic core in a foil structure.

IPC Classes  ?

• H01F 41/08 - Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
• H01F 41/064 - Winding non-flat conductive wires, e.g. rods, cables or cords
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets

Abstract

The present disclosure provides a transformer module and a power module, wherein the transformer module comprises: a magnetic core, a first wiring layer, a first insulating layer and a second wiring layer, where the first wiring layer, the first insulating layer and the second wiring layer are sequentially disposed on the magnetic core from outside to inside; a first metal winding, formed in the first wiring layer, where at least part of the first metal winding is wound around the magnetic core in a foil structure; the first insulating layer, at least partially covered by the first metal winding; a second metal winding, formed in the second wiring layer and wound around the magnetic core, where the second metal winding is at least partially covered by the first insulating layer, and at least partially covered by the first metal winding.

IPC Classes  ?

• H01F 41/08 - Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
• H01F 41/064 - Winding non-flat conductive wires, e.g. rods, cables or cords
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets

Abstract

A projection device includes multiple optical fiber mounting mechanisms. Each of the optical fiber mounting mechanisms includes an optical fiber extending along a first direction as an axis direction, a signal circuit extending along the first direction, and a mounting structure. The optical fiber includes an engaging section. The mounting structure surrounds the engaging section of the optical fiber and the signal circuit. The mounting structure includes an installation portion extending radially relative to the first direction. The installation portion includes a surface and multiple elements exposed from the surface. The surface includes a normal direction parallel with the first direction. A first length of the engaging section of the optical fiber protruding from the surface of the installation portion is longer than lengths of the elements protruding from the surface.

IPC Classes  ?

• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means
• G03B 21/00 - Projectors or projection-type viewers; Accessories therefor

Abstract

A photovoltaic inverter includes a casing, at least one circuit board located in the casing, a current sensor located on the at least one circuit board, an arc detector located on the at least one circuit board, a self-test coil located on the at least one circuit board, and at least one direct current input terminal located on the casing and connected to the at least one circuit board, wherein the self-test coil is configured to deliver a test signal to be sensed by the arc detector, and the direct current input terminal is configured to deliver a direct current through the arc detector, wherein the current sensor is configured to detect a magnitude of the direct current passing through the direct current input terminal.

IPC Classes  ?

• H02M 7/00 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
• H05K 7/14 - Mounting supporting structure in casing or on frame or rack
• H05K 1/18 - Printed circuits structurally associated with non-printed electric components

Abstract

A transformer includes a magnetic core assembly, a bobbin, two first windings, a second winding and at least one circuit board. The bobbin includes a bobbin main body, a bobbin channel and a winding portion. The winding portion is formed on an outer periphery surface of the bobbin main body. The two first windings are disposed around the winding portion. One of the two first windings is disposed between the other one of the two first windings and the outer periphery surface of the bobbin main body. The second winding is disposed around the winding portion and disposed between the two first windings. The at least one circuit board includes a circuit board hole. The circuit board hole and the bobbin channel are communicated with each other. The magnetic core assembly partially penetrates through the circuit board hole and the bobbin channel.

IPC Classes  ?

• H01F 27/02 - Casings
• H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
• H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
• H01F 27/28 - Coils; Windings; Conductive connections
• H01F 27/32 - Insulating of coils, windings, or parts thereof

Abstract

A power supply system is provided. The power supply system includes a power supply, a main load unit, a DC-DC voltage conversion unit, a bypass unit, and at least one sub-load unit. The power supply is configured to provide an adjustable supply voltage. The main load unit is electrically connected to the power supply for receiving the supply voltage. The DC-DC voltage conversion unit is electrically connected to the power supply. The bypass unit is electrically connected to the power supply. The at least one sub-load unit is electrically connected to the DC-DC voltage conversion unit and the bypass unit. When the main load unit stops operating, the power supply adjusts the supply voltage and provides the adjusted supply voltage to the sub-load unit through the bypass unit.

IPC Classes  ?

• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion

Abstract

A magnetic device for a power conversion module is provided. The magnetic device includes a magnetic core assembly. The magnetic core assembly includes an upper magnetic cover, a lower magnetic cover, a first magnetic leg, a second magnetic leg and a channel. The lower magnetic cover includes a first opening and a second opening. The first magnetic leg is disposed between the upper magnetic cover and the lower magnetic cover. The second magnetic leg is disposed between the upper magnetic cover and the lower magnetic cover. The channel is disposed between the first magnetic leg and the second magnetic leg. When the upper magnetic cover and the lower magnetic cover are locked on a circuit board, the first magnetic leg and the second magnetic leg are included in a projection region of the upper magnetic cover with respect to the lower magnetic cover.

IPC Classes  ?

• H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
• H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
• H01F 27/02 - Casings
• H01F 27/29 - Terminals; Tapping arrangements
• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 3/00 - Conversion of dc power input into dc power output

Abstract

A heating device includes a first capacitor, a first switch, a second switch, a second capacitor, a third capacitor, a coil and a controller. The first and second switch are coupled in series at a first node, and are coupled with the first capacitor in parallel. The second capacitor is coupled to the first switch. The third capacitor is coupled to the second switch, and is coupled to the second capacitor at a second node. The coil is coupled between the first and the second node. The controller outputs a first and a second control signal to the first switch and the second switch, respectively. After the heating device received a voltage and a starting command, the controller outputs the first and the second control signal to turn on or off the first and the second switch respectively. The duty cycle of the first signal is lower than 50%.

IPC Classes  ?

• H05B 6/06 - Control, e.g. of temperature, of power
• H05B 6/04 - Sources of current

Abstract

The present disclosure discloses an onboard power device and a thermal management system, wherein the thermal management system comprises the onboard power device which comprises a power assembly comprising a plurality of electronic components and a shell comprising an inner cavity and a coolant passage that are isolated from each other, wherein the power assembly is disposed in the inner cavity which is filled with insulating heat conductive fluid, the power assembly being immersed in the insulating heat conductive fluid, and wherein a coolant flows through the coolant passage. The present disclosure allows the power assembly to be sufficiently and uniformly cooled by immersing in insulating heat conductive fluid, and by circulating coolant in the coolant passage of the onboard power device.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
• H01F 27/02 - Casings
• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
• H01F 27/10 - Liquid cooling

Abstract

A cooling distribution unit includes a main body, a removable unit and an adjustment mechanism. The main body includes a first guiding structure. The removable unit includes a casing, a pump and a second guiding structure. The first guiding structure and the second guiding structure are coupled with each other. The adjustment mechanism includes a guiding slot and a fulcrum part. The guiding slot has a front end and a rear end. A distance between a center of the front end of the guiding slot and the fulcrum part is greater than a distance between a center of the rear end of the guiding slot and the fulcrum part. While the removable unit is locked on the main body or detached from the main body, the first guiding structure or the second guiding structure is disposed within the guiding slot.

IPC Classes  ?

• F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
• F16L 29/02 - Joints with fluid cut-off means with a cut-off device in one of the two pipe ends, the cut-off device being automatically opened when the coupling is applied

Abstract

A transformer includes a magnetic core assembly, a bobbin, two first windings, a second winding and a second circuit board. A bobbin channel runs through two opposite sides of the bobbin main body. The winding portion is formed on an outer periphery surface of the bobbin main body. The two first windings are disposed around the winding portion. One of the two first windings is disposed between the other one of the two first windings and the outer periphery surface of the bobbin main body. The second winding is disposed around the winding portion and disposed between the two first windings. The second circuit board hole and the bobbin channel are in communication with each other. The magnetic core assembly partially penetrates through the bobbin channel and the second circuit board hole. The second winding and the second circuit board are connected with each other in parallel.

IPC Classes  ?

• H01F 27/34 - Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
• H01F 27/38 - Auxiliary core members; Auxiliary coils or windings
• H01F 27/32 - Insulating of coils, windings, or parts thereof
• H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
• H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

Abstract

A heating device includes a first capacitor, a first switch, a second switch, a second capacitor, a third capacitor, a coil and a controller. The first and second switch are coupled in series at a first node, and are coupled with the first capacitor in parallel. The second capacitor is coupled to the first switch. The third capacitor is coupled to the second switch, and is coupled to the second capacitor at a second node. The coil is coupled between the first and the second node. The controller outputs a first and a second control signal to the first switch and the second switch, respectively. After the heating device received a voltage and a starting command, the controller outputs the first and the second control signal to turn on or off the first and the second switch respectively. The duty cycle of the first signal is lower than 50%.

IPC Classes  ?

• H05B 6/06 - Control, e.g. of temperature, of power
• H05B 6/04 - Sources of current

Abstract

A heating device includes a first capacitor, a first switch, a second switch, a second capacitor, a third capacitor, a coil and a controller. The first and second switch are coupled in series at a first node, and are coupled with the first capacitor in parallel. The second capacitor is coupled to the first switch. The third capacitor is coupled to the second switch, and is coupled to the second capacitor at a second node. The coil is coupled between the first and the second node. The controller outputs a first and a second control signal to the first switch and the second switch, respectively. After the heating device received a voltage and a starting command, the controller outputs the first and the second control signal to turn on or off the first and the second switch respectively. The duty cycle of the first signal is lower than 50%.

IPC Classes  ?

• H05B 6/06 - Control, e.g. of temperature, of power
• H05B 6/04 - Sources of current

Abstract

An electronic module, comprising: a first electronic device, a first circuit board disposed over the first top surface, and a second circuit board disposed under the bottom surface of the body of the first electronic device, wherein a plurality of conductors are disposed over a first lateral surface for electrically connecting the first circuit board and the second circuit board, wherein a plurality of electrodes of the electronic module are disposed on a bottom surface of the second circuit board.

IPC Classes  ?

• H05K 1/14 - Structural association of two or more printed circuits
• H05K 5/00 - Casings, cabinets or drawers for electric apparatus
• H05K 1/02 - Printed circuits - Details
• H05K 1/11 - Printed elements for providing electric connections to or between printed circuits

Abstract

A power supply device is disclosed and includes a housing, a power board, an output terminal and a DCDC conversion module. The housing includes an accommodation space, and a first opening of a rear plate in communication with the accommodation space. The power board disposed in parallel to the lower plate is at least partially accommodated in the accommodation space, and a peripheral edge is disposed adjacent to the rear plate. The output terminal is disposed in parallel to the lower plate, and passes through the first opening of the rear plate. The DCDC conversion module is accommodated in the accommodation space and includes a primary circuit, a transformer and a secondary circuit. The transformer and the secondary circuit are arranged on the power board in sequence. The secondary circuit is arranged on part of the power board existing the peripheral edge and electrically connected to the output terminal.

IPC Classes  ?

• H02M 3/00 - Conversion of dc power input into dc power output
• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H05K 1/11 - Printed elements for providing electric connections to or between printed circuits
• H01F 27/24 - Magnetic cores

Abstract

The present disclosure provides a manufacturing process of a metal winding, where the manufacturing process includes: cutting a first metal copper foil to form a connector and a pin; performing insulation processing on a surface of at least one of the first metal copper foil and a second metal copper foil; bending the first metal copper foil to form a first metal winding to cover on a magnetic core; and covering the second metal copper foil at least partially on a surface of the first metal copper foil to form a second metal winding, and a pin of the first metal winding passes through the second metal winding.

IPC Classes  ?

• H01F 41/08 - Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
• H01F 41/064 - Winding non-flat conductive wires, e.g. rods, cables or cords
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets

Abstract

A fan includes a frame, an impeller, a driving assembly and a circuit board. The frame includes an inlet, an outlet, a first accommodation space, a base and a second accommodation space, wherein the inlet and the outlet are disposed at opposite sides of the frame, and the first accommodation space is separated from the second accommodation space. The impeller is disposed in the first accommodation space and on the base. The driving assembly is disposed between the base and the impeller. The circuit board is disposed in the second accommodation space. The base includes plural first through holes, and the impeller includes plural second through holes. During the fan is operating, a first airflow is formed to flow from the inlet to the outlet, and a second airflow is formed to flow through the driving assembly via the plural first through holes and the plural second through holes.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
• F04D 19/00 - Axial-flow pumps specially adapted for elastic fluids
• F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
• F04D 29/52 - Casings; Connections for working fluid for axial pumps

Abstract

An optical calibration tool includes a first body, a light emitter, a light receiver, a second body, and a light reflecting member. The first body has a first engaging port and a second engaging port. The light emitter and the light receiver are disposed in the first body. The second body has a third engaging port and a channel communicated with each other. The third engaging port is configured to selectively engage one of the first engaging port and the second engaging port. When the third engaging port is engaged with the first engaging port, the light emitter is optically coupled to the light reflecting member. When the third engaging port is engaged with the second engaging port, the light receiver is optically coupled to the light reflecting member.

IPC Classes  ?

• G01N 21/01 - Arrangements or apparatus for facilitating the optical investigation
• B01L 7/00 - Heating or cooling apparatus; Heat insulating devices

Abstract

The present disclosure discloses a shielded insulating shell and an electronic device. The shielded insulating shell includes a shell body provided with a first cavity, with an inner shielding layer near the first cavity and an outer shielding layer far away from the first cavity being formed on the shell body; a first structure formed on the first cavity, and formed by assembling to comprise at least a first shielding layer, a first insulating layer, a first air gap layer, a second insulating layer, and a second shielding layer arranged sequentially from an inner side to an outer side of the first cavity; and an assembling gap formed on the first structure, which cooperates with the first air gap layer to form a creepage path on the first structure that extends from the inner shielding layer to the outer shielding layer.

IPC Classes  ?

• H01F 27/02 - Casings
• H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

Abstract

The present invention provides a hanging assembly for a cabinet. The cabinet includes a first lateral plate for defining an accommodation space, and the first lateral plate includes an opening. The hanging assembly includes a first connecting component fixed to the cabinet and a second connecting component. The first connecting component includes a first main body and a convex portion. The first main body includes a first surface. The convex portion is disposed on the first surface and passes through the opening along a first direction. The second connecting component includes a second main body and a hanging component. The second main body includes a second surface, and the second surface is detachably connected to the convex portion through the opening. The first lateral plate is disposed between the first connecting component and the second connecting component. The hanging component is disposed on the second main body.

IPC Classes  ?

• H05K 5/02 - Casings, cabinets or drawers for electric apparatus - Details
• A47B 95/00 - Fittings for furniture

Abstract

A laser light source combiner system includes a laser light source, a phosphor wheel, a first dichroic filter located between the laser light source and the phosphor wheel, and a dichroic filter assemble located between the first dichroic filter and the laser light source. The laser light source is configured to emit a first blue light traveling along a first direction. The phosphor wheel is configured to reflect a portion of the first blue light so as to form a second blue light and to convert a portion of the second blue light into a fluorescent light. The first dichroic filter is configured to make the second blue light partially transmit and partially reflected and make the fluorescent light transmit. The dichroic filter assemble is configured to reflect the second blue light and the fluorescent light.

IPC Classes  ?

• G02B 27/14 - Beam splitting or combining systems operating by reflection only

Goods & Services

Home automation hubs; smart home hubs; electric light dimmers [regulators]; electric light regulators [dimmers]; remote control apparatus; detectors; climate control digital thermostats; downloadable computer software applications; recorded or downloadable computer software platforms:. Lighting apparatus and installations; ceiling lights; light-emitting diodes [LED] lighting apparatus; smart light bulbs; stand lamps; light projectors.

Goods & Services

home automation hubs, smart home hubs, electric light dimmers (regulators), electric light regulators (dimmers), remote control apparatus for controlling illuminators, blinds, air-conditioners and wireless connected appliances; detectors for temperature, air-quality, illuminance, noise, smoke, proximity, theft and presence, climate control digital thermostats, downloadable computer software applications for remotely controlling illuminators, blinds, air-conditioners and wireless connected appliances; recorded or downloadable computer software platforms for remotely regulating and controlling illuminators, blinds, air-conditioners and wireless connected appliances lighting apparatus and installations, ceiling lights, light-emitting diodes (LED) lighting apparatus, smart light bulbs, stand lamps, light projectors

Abstract

The present disclosure discloses a power conversion system and a communication method for transmitting common mode information in the power conversion system. The communication method comprises the following steps: (a) providing at least two power conversion cells; (b) generating, by each of the power conversion cells, an AC harmonic according to a first electrical signal at the first terminal of the power conversion cell, wherein an amplitude of each AC harmonic represents first information of the power conversion cell, and all the AC harmonics are at the same frequency; and (c) injecting the AC harmonic generated by the corresponding power conversion cells into the first terminal of the corresponding power conversion cell and applying a closed-loop suppression to the AC harmonic generated by the corresponding power conversion cell, and controlling the resonance control unit to output a second electrical signal related to the first information.

IPC Classes  ?

• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
• H02M 7/04 - Conversion of ac power input into dc power output without possibility of reversal by static converters

Abstract

A heat dissipation assembly is disclosed and includes a fan, a vapor chamber and a heat dissipation fin set. The fan includes a fan frame, an impeller and a fan cover. The impeller is disposed on the fan frame and accommodated in an accommodation space. The impeller includes plural metal blades and a hub, and the plural metal blades are radially arranged on the periphery of the hub to form a dense-metal-blade impeller. The fan cover is assembled with the fan frame to form an outlet, and the fan cover includes an inlet. The vapor chamber includes an upper plate and a lower plate assembled with each other. The upper plate or the lower plate is connected to the fan cover, and the vapor chamber and the fan cover are coplanar. The heat dissipation fin set is connected to the lower plate and spatially corresponding to the outlet.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
• G06F 1/20 - Cooling means

Abstract

A magnetic component includes a core, at least one coil and a thermal conductive filler. The core includes an inner leg, at least two outer legs and at least one non-bonding region. The at least one coil is wound around the inner leg or the at least two outer legs. The thermal conductive filler covers a part of the core. At least one part of the at least one non-bonding region is not covered by the thermal conductive filler.

IPC Classes  ?

• H01F 27/08 - Cooling; Ventilating
• H01F 27/24 - Magnetic cores
• H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support

Abstract

The present disclosure provides a magnetic element and a manufacturing method thereof. The manufacturing method including steps of: (a) dividing a magnetic core into a first component and a second component, wherein the first and second components have two connecting surfaces on the split section respectively, and the first and second components have an inner and an outer surfaces; (b) disposing a flexible material on the inner surfaces of the first and second components respectively; (c) sleeving a coil on the first and second components; (d) connecting the two connecting surfaces of the first component to the two connecting surfaces of the second component to assemble the first and second components; (e) utilizing a thermal conduction glue to pot the magnetic element; and (f) curing and forming the thermal conduction glue after a curing time.

IPC Classes  ?

• H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
• H01F 27/22 - Cooling by heat conduction through solid or powdered fillings
• H01F 17/06 - Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support

Abstract

A liquid cooling heat dissipation system is provided. The system includes a first heat dissipation device, a first heat absorption device, a second heat dissipation device, a second heat absorption device, and a pump connected with the first heat dissipation device, the first heat absorption device, the second heat dissipation device or the second heat absorption device. The first heat dissipation device, the first heat absorption device, the second heat dissipation device and the second heat absorption device are connected in sequence.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

A power system is provided, including a power module, a plurality of first electric apparatus safety devices, and a plurality of second electric apparatus safety devices. The first electric apparatus safety devices and second electric apparatus safety devices are arranged along a first direction of the power system. The first electric apparatus safety devices, the second electric apparatus safety devices, and the power module are stacked along a second direction of the power system, wherein the first direction is perpendicular to the second direction.

IPC Classes  ?

• H02B 1/04 - Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
• H02B 1/20 - Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards

Abstract

A heat transmitting device is provided, including a main body and an integrating portion. The main body has at least one opening. The integrating portion is used to seal the opening, and has a first surface and a second surface opposite the first surface. A first welding pattern is formed on the first surface, a second welding pattern is formed on the second surface, and the position of the first welding pattern corresponds to that of the second welding pattern. The type of the first welding pattern and the type of the second welding pattern are asymmetric.

IPC Classes  ?

• B23K 20/10 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
• F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes

Abstract

The present disclosure discloses a resonant converter, and a controlling method thereof. The resonant converter includes a transformer including a primary winding and a secondary winding, a primary circuit electrically connected to the primary winding and receiving an input voltage, and a secondary circuit electrically connected to the secondary winding and outputting an output voltage. The secondary circuit includes a first secondary half-bridge including a first controllable switch and a second secondary half-bridge including a second controllable switch connected in parallel. The first and second controllable switches are arranged diagonally. The method includes: controlling a duty ratio of one of the first controllable switch and the second controllable switch in a first switching period to form a first short-circuited loop during a first interval during; and controlling a duty ratio of the other one in a second switching period to form a second short-circuited loop during a second interval.

IPC Classes  ?

• H02M 3/00 - Conversion of dc power input into dc power output
• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion

Abstract

A method of controlling a resonant push-pull converter is disclosed. The resonant push-pull converter includes a transformer, a first switch, a second switch, a resonant tank, and a rectifying circuit. The method includes a step of a fixed on-time control. In the fixed on-time control, a first control signal with a fixed on-time is used to control the first switch, and a second control signal with the fixed on-time is used to control the second switch so that the first switch and the second switch are alternately switched.

IPC Classes  ?

• H02M 3/337 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
• H02M 3/00 - Conversion of dc power input into dc power output
• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A switch circuit electrically connected to a power source and a first control source and including a plurality of switch bridge arms is provided. Each of the plurality of switch bridge arms includes a first switch and a second switch electrically connected in series. A loop formed by the first switch, the second switch and the power source is defined as a power loop. A loop formed by the first control source and the first switch is defined as a first control loop. A first mutual inductance is formed between the power loop and the first control loop. Among all the first switches, the first switch with the longer power loop has the smaller first mutual inductance.

IPC Classes  ?

• H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
• H03K 17/12 - Modifications for increasing the maximum permissible switched current
• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices

Abstract

A heat pipe comprises a flat tube and a wick structure. The flat tube includes a hollow chamber and has a front and a rear sealed ends along an axial direction. The wick structure is disposed in the hollow chamber and extended along the axial direction of the flat tube. The wick structure is divided into a front, a middle and a rear sections sequentially along the axial direction. The front section is near the front sealed end, the rear section is near the rear sealed end. The front, middle and rear sections have a maximum length parallel to the width direction, respectively. The maximum length of the front section is greater than that of the middle section, and the maximum length of the middle section is greater than that of the rear section.

IPC Classes  ?

• F28D 15/04 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes with tubes having a capillary structure
• F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes

Abstract

A novel phase-shift based modulation strategy is disclosed that enables a DC-DC converter to operate with zero voltage-switching (ZVS) across wide voltage and power range. The converter operates at a fixed fundamental frequency, with the output current controlled based on an amount of phase shift of the fundamental component at the output of an inverter portion of the converter. To achieve soft switching a rectifier portion of the converter is controlled to phase shift the fundamental component of the rectifier voltage observed at a rectifier reference terminal. More specifically, by requiring a phase shift of the voltage at the rectifier terminal relative to the output voltage of the inverter, the inverter current is such that ZVS is achieved. A converter and method are provided to implement DC-DC conversion with soft switching.

IPC Classes  ?

• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 3/00 - Conversion of dc power input into dc power output
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion

Abstract

A light source device includes first and second laser light sources, a wavelength conversion unit, a light condensing module, a light combining member, and light guiding members. The first laser light source is configured to emit a first light beam along a first axis. The second laser light source is arranged along the second axis with the first laser light source and configured to emit a second light beam along the first axis. The wavelength conversion unit is configured to convert the second light beam into a color light. The condensing module is configured to condense the color light. The light combining member is configured to receive the first light beam and the color light. The light guiding members are configured to guide at least one of the first light beam and the color light.

IPC Classes  ?

• F21V 9/30 - Elements containing photoluminescent material distinct from or spaced from the light source
• G02B 27/10 - Beam splitting or combining systems
• G02B 19/00 - Condensers
• F21Y 115/30 - Semiconductor lasers

Abstract

An illumination system for a projector includes a light engine module, a light source module, a reflective mirror, a beam splitter, a phosphor wheel, and a lens assembly. The light source module can emit blue light along a first direction. The reflective mirror may reflect the blue light such that the blue light transmits in a second direction. A reflective region of the phosphor wheel can reflect a first portion of the blue light, and a first wavelength conversion region of the phosphor wheel can to activate a second portion of the blue light to form first band light. The lens assembly is configured to allow the first band light to pass through. The reflective region of the beam splitter is configured to reflect the first portion of the blue light and the first band light to the light engine module along the first direction.

IPC Classes  ?

• G03B 21/20 - Lamp housings

Abstract

A power apparatus applied in a solid state transformer structure includes an AC-to-DC conversion unit, a first DC bus, and a plurality of bi-directional DC conversion units. First sides of the bi-directional DC conversion units are coupled to the first DC bus. Second sides of the bi-directional DC conversion units are configured to form at least one second DC bus, and the number of the at least one second DC bus is a bus number. The bi-directional DC conversion units receive a bus voltage of the first DC bus and convert the bus voltage into at least one DC voltage, or the bi-directional DC conversion units receive at least one external DC voltage and convert the at least one external DC voltage into the bus voltage.

IPC Classes  ?

• H02J 4/00 - Circuit arrangements for mains or distribution networks not specified as ac or dc
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion

Abstract

A connector is disclosed and includes a housing base, a conductive terminal, a signal terminal and a protrusion. A sleeve of an electronic device end sleeves on the housing base through an opening end along a first direction and slides a first displacement distance, plural contact pins of the electronic device end slide into the accommodation space through the opening end, and a conductive contact pin of the electronic device end is interfered with the conductive terminal to form an electrical connection. The protrusion is elastically connected to the housing base and penetrates through the housing base. When the sleeve passes through the opening end and slides a second displacement distance greater than the first displacement distance, the protrusion is interfered with the sleeve and drives the signal terminal, so that the signal terminal pushes against a signal contact pin of the electronic device end to form an electrical connection.

IPC Classes  ?

• H01R 24/60 - Contacts spaced along planar side wall transverse to longitudinal axis of engagement
• H01R 13/53 - Bases or cases for heavy duty; Bases or cases with means for preventing corona or arcing
• H01R 13/502 - Bases; Cases composed of different pieces
• H01R 13/05 - Resilient pins or blades

Abstract

A connector is disclosed and includes a main body, a sleeving component, a conductive terminal and a signal terminal. The main body has an opening end and a sleeved end opposite to each other. An electronic device end is matched with the connector through the opening end. The sleeving component is slidably disposed on the sleeved end, and includes a conductive contact portion and a signal contact portion arranged in parallel. The conductive terminal is fixed to the main body for connecting with the conductive contact portion. The signal terminal is fixed to the main body for connecting with the signal contact portion. When the connector is detached from the electronic device end, the sleeving component is displaced relative to the main body, the signal contact portion is separated from the signal terminal, and the conductive terminal end and the conductive contact portion are maintained in an electrical connection.

IPC Classes  ?

• H01R 24/60 - Contacts spaced along planar side wall transverse to longitudinal axis of engagement
• H01R 13/627 - Snap-action fastening

Abstract

A totem pole power factor correction circuit includes a detection module and a control unit. The detection module includes a first detection resistor and a first detection circuit. After a voltage difference between the two terminals of the first detection resistor is detected by the first detection circuit, an output voltage is generated. The control unit determines the operating state of the totem pole power factor correction circuit according to the output voltage. If the totem pole power factor correction circuit is in the normal working state, and the totem pole power factor correction circuit is in a steady state or the output power (or the input voltage) is increased or decreased, the control unit controls the on/off states of the corresponding switches in the totem pole power factor correction circuit according to the output voltage.

IPC Classes  ?

• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
• H02M 7/219 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration

Abstract

A startup control method for a DC/DC converter is used for starting the DC/DC converter with energy transferred from a low-voltage side to a high-voltage side, and includes: acquiring a voltage spike measurement value of a power switch at the low-voltage side; determining a duty cycle or a frequency of a driving signal according to the voltage spike measurement value and a preset voltage; and outputting the driving signal to a power switch at the high-voltage side, thereby charging a clamping capacitor of the power switch at the low-voltage side. The startup control method for a DC/DC converter of the disclosure can improve a reverse charging power of the converter to the maximum extent and reduce the time needed for charging a bus capacitor during a reverse startup process while ensuring voltage stress on the power switch not to exceed a limit.

IPC Classes  ?

• H02M 1/36 - Means for starting or stopping converters
• G01R 19/04 - Measuring peak values of ac or of pulses
• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A method to form an inductor, the method comprising: forming a metal structure by removing unwanted portions of the metal plate to form a first electrode, a second electrode, and a bare conductor wire between the first electrode and the second electrode, wherein a first thickness of the first electrode is greater than a thickness of the bare conductor wire, and a second thickness of the second electrode is greater than said thickness of the bare conductor wire; and forming a magnetic body to encapsulate the bare conductor wire, and a least one portion of the first electrode and a least one portion of the second electrode.

IPC Classes  ?

• H01F 27/29 - Terminals; Tapping arrangements
• H01F 27/02 - Casings
• H01F 27/28 - Coils; Windings; Conductive connections
• H01F 41/00 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
• H05K 1/18 - Printed circuits structurally associated with non-printed electric components
• H01F 17/02 - Fixed inductances of the signal type without magnetic core