Protective circuit for selectively applying power to a motor

Details Protective circuit for selectively applying power to a motor Protective circuit for selectively applying power to a motor

H - Electricity

02

P

342/39

H02P 5/68 (2006.01) H02P 7/29 (2006.01) H03K 17/0812 (2006.01)

Patent

CA 1117627

PROTECTIVE CIRCUIT FOR SELECTIVELY APPLYING POWER TO A MOTOR ABSTRACT OF THE DISCLOSURE A protective circuit is described for selectively applying power to a motor. The circuit includes a power switch which closes and opens to apply and remove power from the motor, and a control for diverting reactively inducted motor current from the power switch back to the motor via a current path when the power switch is opened. The control opens the current path when the power switch opens and remains open for a predetermined interval so that, when the motor is unenergized and mechanically rotated, the motor is not braked by current flow through the current path and the motor.

323742

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