Anti-plug reversing module

Details Anti-plug reversing module Anti-plug reversing module

1985-05-28

1986-12-09

Shoop, Jr., William M.

Electricity: motive power systems

Motor-reversing

Automatic and/or with time-delay means

318261, 318291, 318293, 318331, H02P 122, H02P 310

Patent

active

046282327

ABSTRACT:
An anti-plug reversing circuit for use with a variable speed D.C. motor which provides safe and fast motor reversing with dynamic braking. The circuit, by sensing counter-EMF, prevents the premature application of a voltage of opposite (reversing) polarity until the motor armature has come to a full stop. The circuit advantageously utilizes a three-wire control input, is low cost, easily manufactured and applicable for use with low cost D.C. motors.

REFERENCES:
patent: 3551774 (1970-12-01), Rusch
patent: 3584281 (1971-06-01), Reeves
patent: 3748557 (1973-07-01), Mittelstaedt
patent: 3967175 (1976-06-01), Turley
patent: 4384240 (1983-05-01), Sloan
patent: 4514665 (1985-04-01), Melocik et al.
patent: 4518902 (1985-05-01), Melocik et al.

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