Brushless direct current motor

Details Brushless direct current motor Brushless direct current motor

H - Electricity

02

K

318/96

H02K 29/08 (2006.01)

Patent

CA 1051969

ABSTRACT: The invention relates to a collectorless d.c. machine which is provided with a disc which rotates with the rotor, in which disc magnetically coded tracks are provided which co-operate with magneto-sensitive elements for selectively energizing the stator coils depending on the rotor position. The invention in particular relates to a three-phase motor, whilst on a disc on the rotor shaft two magnetic codes are provided which are shifted through 120° relative to each other. The magnetic codes are separately detected by a magneto-sensitive element. The two elements together with the associated electronic circuitry which amplifies the two signals and produces a third signal which has a 120° phase shift relative to the two other signals, take the form of one integrated circuit.

247745

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