Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1993-12-20
1996-05-14
LaBalle, Clayton E.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 40MM, H02K 1100
Patent
active
055170676
ABSTRACT:
A miniature D.C. motor has a casing in which magnets are disposed and a rotor is disposed inside the magnets. The rotating condition is detected by a rotation detector which comprises an inductor and a capacitor. The inductor detects leaking fluxes externally from the casing among fluxes created by mutual operations of the magnets and an armature and converts a change of the leaking fluxes into electric signals. The capacitor is electrically connected to the inductor so as to constitute a resonance circuit. The resonance circuit is mounted on an outer surface of the casing. A resonance frequency of the resonance circuit is made so as to correspond to a frequency to be generated for a rotating time of the armature.
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LaBalle Clayton E.
Mabuchi Motor Co. Ltd.
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