Semiconductor switch failure control circuit

Details Semiconductor switch failure control circuit Semiconductor switch failure control circuit

1980-05-15

1982-10-19

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

307252B, 307252N, 323351, 361 58, H02H 300

Patent

active

043553435

ABSTRACT:
A bidirectional semiconductor switch such as a Triac in the usual failure mode, wherein the device conducts continuously in only one direction, has a storage circuit in series intermediate the triac and load. The storage circuit may comprise a single capacitor preferably of predetermined value and adapted to, after a relatively short time-out period, interrupt power applied to the load. The capacitor is preferably a non-polar type, although, in an alternate embodiment a pair of oppositely-poled polar capacitors may be employed.

REFERENCES:
patent: 3493783 (1970-02-01), Till
patent: 3553495 (1971-01-01), Shaugnessy
patent: 3737744 (1973-06-01), Bader, Jr.
patent: 3855482 (1974-12-01), Wills

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