Small-sized direct-current motor

Details Small-sized direct-current motor Small-sized direct-current motor

H - Electricity

01

C

H01C 7/02 (2006.01) H01C 7/04 (2006.01) H02K 11/00 (2006.01)

Patent

CA 2045496

ABSTRACT A small-sized direct-current motor in which a PTC thermistor made of a BaTiO3 ceramic material with the ratio V.beta./? 25 of the withstanding voltage V.beta. to the ordinary-temperature resistivity ?25 in a range of from 7 to 20 is connected to an armature coil in series and is disposed within a motor housing.

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