D-C motor control circuit

Details D-C motor control circuit D-C motor control circuit

1975-05-09

1976-12-21

Schaefer, Robert K.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

H02P 122

Patent

active

039991091

ABSTRACT:
A control circuit for reversibly driving a motor from a small d-c voltage. A switched a-c voltage source is selectively applied to the primary windings of either of two voltage step down transformers. The a-c voltage of each secondary winding is rectified and applied to the motor through a series resistor. The rectified voltage from one transformer drives the motor in one direction and the rectified voltage from the other transformer drives the motor in the reverse direction.

REFERENCES:
patent: 2782995 (1957-02-01), McCormack
patent: 3051881 (1962-08-01), Baudin
patent: 3146390 (1964-08-01), Wolff
patent: 3458790 (1969-07-01), Wilkerson
patent: 3641409 (1972-02-01), Maeda et al.

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