Short circuit protection circuit

Details Short circuit protection circuit Short circuit protection circuit

1976-04-14

1977-09-06

Hohauser, Herman J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361101, H02H 320

Patent

active

040472337

ABSTRACT:
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.

REFERENCES:
patent: 3578983 (1971-05-01), Kondo
patent: 3591833 (1971-07-01), Bolinger
patent: 3889159 (1975-06-01), Wessel

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