Power FET short circuit protection

Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor

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Details

307200B, 361100, H02H 320

Patent

active

043630685

ABSTRACT:
A protection circuit for a semiconductor device such as a field effect transistor is disclosed having an oscillator which is connected to both the gate turn on circuitry and to the drain-source circuit of the field effect transistor for sensing the voltage of the drain-source circuit and for turning off cyclically the field effect transistor upon the simultaneous occurrence of a gate turn on signal to the gate of the transistor and high drain-source voltage.

REFERENCES:
patent: 3493878 (1970-02-01), Fautale
patent: 3845405 (1974-10-01), Leidich
patent: 3864642 (1975-02-01), Long et al.
patent: 4127887 (1978-11-01), Tanaka et al.
patent: 4158866 (1979-06-01), Baker
patent: 4186418 (1980-01-01), Seiler
patent: 4293888 (1981-10-01), McCarty

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