Short circuit protection circuit

Details Short circuit protection circuit Short circuit protection circuit

H - Electricity

02

H

323/7

H02H 3/02 (2006.01) H02H 3/06 (2006.01) H03K 17/082 (2006.01)

Patent

CA 1068783

SHORT CIRCUIT PROTECTION CIRCUIT ABSTRACT OF THE DISCLOSURE In a circuit of the type in which a command signal actuates a semiconductor switch which, in turn, actuates a load device and in which a clock signal is available, a protection circuit for protecting the semiconductor switch located in series with the load from excessive current in the event the load device is short circuited. The protection circuit includes a sensing circuit for sensing the voltage level at a point intermediate the semiconductor switch and the load. The protection circuit interfaces between the command signal and the clock signal in such a manner that the semiconductor switch is repeatedly momentarily energized if the load is shorted and a command signal is present.

274597

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