Shaded pole electric motor and brake

Details Shaded pole electric motor and brake Shaded pole electric motor and brake

1975-04-03

1976-12-14

Schaefer, Robert K.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318382, H02P 324

Patent

active

039978273

ABSTRACT:
A shaded pole electric motor which utilizes shading coils on the shaded poles is operated to provide a braking action. The shading coils are normally operated to cause the motor to operate either clockwise or counterclockwise. The current flow in the shading coils is used to gate a triac for normal operation. When the triac is not gated, the energizing potential for the motor operates a unidirectional current control circuit to energize the motor winding with half-wave direct current to brake the motor.

REFERENCES:
patent: 3367296 (1968-02-01), Harruff
patent: 3617837 (1971-11-01), Beck
patent: 3872363 (1975-03-01), Gross

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