Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1993-12-03
1995-09-19
Martin, David S.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318783, 318792, 361 26, 361 32, 361105, H02P 144
Patent
active
054518539
ABSTRACT:
A starting device for a single phase induction motor can reduce the power consumption and restart in a short time. The starting device for the single phase induction motor having a main winding and a starting winding comprises a starting positive temperature coefficient thermistor connected in series with the starting winding, a bidirectional current control device connected in series with the starting winding and the starting positive temperature coefficient thermistor, and an auxiliary positive characteristic thermistor having a heat capacity smaller than that of the starting positive temperature coefficient thermistor connected in parallel with the starting positive temperature coefficient thermistor, a terminal of the auxiliary positive temperature coefficient thermistor being connected to a gate of the bidirectional current control device.
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Martin David S.
Yamada Electric Mfg. Co., Ltd.
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