Overvoltage and overtemperature protection circuit

Details Overvoltage and overtemperature protection circuit Overvoltage and overtemperature protection circuit

1986-02-04

1987-10-06

Clawson, Jr., Joseph E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

357 28, 357 38, 357 43, 361101, 361103, 307310, H01L 2978

Patent

active

046986553

ABSTRACT:
An overvoltage and overtemperature protection circuit that includes an output thyristor fabricated in monolithic integrated circuit form is provided. The thyristor comprises a P-type substrate serving as an anode and diffused cathode and gate region wherein the current flows vertically, optimizing the high voltage and high current capability. A thermal limit circuit is provided for triggering the thyristor when a designated temperature is exceeded. The output thyristor will shunt the output voltage to ground whenever the predetermined voltage or temperature is exceeded.

REFERENCES:
patent: 3146135 (1964-08-01), Sah
patent: 3164500 (1965-01-01), Benda
patent: 3831187 (1974-08-01), Nellson
patent: 4298881 (1987-11-01), Sakurada et al.
patent: 4595941 (1986-06-01), Avery

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