Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
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
Clawson Jr. Joseph E.
Koch William E.
Motorola Inc.
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