Abstract

An electric motor may comprise a rotor and a stator comprising rotor and stator teeth, respectively. A non-uniform angular spacing or grouping of rotor teeth may facilitate desired rotational speeds of the rotor.

IPC Classes  ?

• H02K 1/24 - Rotor cores with salient poles
• H02K 11/00 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
• H02K 19/06 - Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motors
• H02K 19/10 - Synchronous motors for multi-phase current
• H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
• H02P 25/08 - Reluctance motors

Abstract

Integrated circuits are manufactured using a direct write lithography step to at least partially form at least one layer within the integrated circuit. The performance characteristics of an at least partially formed integrated circuit are measured and then the layout design to be applied with a direct write lithography step is varied in dependence upon those performance characteristics. Accordingly, the performance of an individual integrated circuit, wafer of integrated circuits or batch of wafers may be altered.

IPC Classes  ?

• G03F 7/20 - Exposure; Apparatus therefor