Reversible motor drive control circuit

Details Reversible motor drive control circuit Reversible motor drive control circuit

1988-10-18

1990-05-08

Miska, Vit W.

Electricity: motive power systems

Motor-reversing

Automatic and/or with time-delay means

318282, H02P 122

Patent

active

049241540

ABSTRACT:
A control circuit for reversible control of a motor including a switch for selecting the rotational direction of a motor, a self-retaining driver circuit for driving the motor in the direction selected by the switch, a timer circuit which is initialized when the switch is actuated irrespective of the selected rotational direction of the motor and resets the driver circuit after the elapse of a certain period of time. The driver circuit may also be connected to a limit switch for resetting the driver circuit when the motor has reached an end of its stroke. Thus, the overloading of the motor is minimized even when the motion of the motor is obstructed at an intermediate point of its stroke, and the motor can reach an end of its stroke without fail even when the switch is actuated repeatedly.

REFERENCES:
patent: 4138630 (1979-02-01), Graham
patent: 4369399 (1983-01-01), Lee et al.
patent: 4393343 (1983-07-01), Matsuoka et al.
patent: 4410061 (1983-10-01), Terabayashi
patent: 4562387 (1985-12-01), Lenhoff
patent: 4678975 (1987-07-01), Vrabel et al.
patent: 4796011 (1989-01-01), Lemirande et al.

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