Component for motor start up circuit

Details Component for motor start up circuit Component for motor start up circuit

1997-04-24

1998-08-04

Ro, Bentsu

Electricity: motive power systems

Induction motor systems

Primary circuit control

318788, 318795, H02P 142

Patent

active

057898979

ABSTRACT:
A motor-driving circuit includes an auxiliary coil which functions at the time of the start-up of the motor and a main coil for its stead state operation. A component of a start-up circuit to be incorporated in such a motor-driving circuit includes a thermistor with positive temperature characteristic and a Triac switch which are to be connected in series with the auxiliary coil, a case which contains both the thermistor and the Triac switch, and a connector member having a planar contact portion, one of its principal surfaces contacting an electrode of the thermistor and the other of the principal surfaces contacting the inner wall surface of the case. The case may further contain therein another thermistor connected to the gate of the Triac switch for controlling the Triac switch.

REFERENCES:
patent: 3708720 (1973-01-01), Whitney et al.
patent: 3829010 (1974-08-01), Jones
patent: 4574229 (1986-03-01), Kim

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