Governor circuit for universal series (or compound) motor

Details Governor circuit for universal series (or compound) motor Governor circuit for universal series (or compound) motor

1993-01-21

1995-03-21

Wysocki, Jonathan

Electricity: motive power systems

Alternating current commutating motors

Universal or a.c.-d.c. motors

318252, H02P 318

Patent

active

053999487

ABSTRACT:
A governor circuit for limiting the top speed of a universal series or compound motor. The governor circuit includes a voltage detector for detecting a selectable threshold voltage across the armature of the motor, and a current shunting circuit which is triggered by the voltage detector when the armature voltage of the motor reaches the threshold level to thereby shunt current through an auxiliary field winding and around the armature and/or main field winding, thereby limiting the speed of the motor. A plurality of embodiments is disclosed which accommodate various conventional power supply types.

REFERENCES:
patent: 3584706 (1971-06-01), Hall
patent: 3617844 (1971-11-01), Grygera
patent: 3902572 (1975-09-01), Ostrander
patent: 5061884 (1991-10-01), Soganovsky

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