Circuitry for protecting against load voltage transients in soli

Details Circuitry for protecting against load voltage transients in soli Circuitry for protecting against load voltage transients in soli

1989-02-27

1990-04-10

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 56, H02H 320

Patent

active

049165720

ABSTRACT:
A solid state relay circuit including a power semiconductor for the switching device, the power semiconductor having gate, source, and drain terminals, the source and drain terminals being adapted to be connected across a load circuit, switching circuitry providing a normally non-conducting path between the gate and source terminals, and circuitry for switching the switching device to a conducting condition in response to the appearance of voltage spikes in the output circuit having a value sufficient to cause the power semiconductor to conduct before the power semiconductor can be caused to conduct.

REFERENCES:
patent: 4423431 (1983-12-01), Sasaki
patent: 4424544 (1984-01-01), Chang
patent: 4528608 (1985-07-01), Andersson
patent: 4541002 (1985-09-01), Shimada
patent: 4546401 (1985-10-01), Svedberg
patent: 4551779 (1985-11-01), Murakami
patent: 4566052 (1986-01-01), Kammiller
patent: 4573099 (1986-02-01), Ganesan
patent: 4581540 (1986-04-01), Guajardo
patent: 4617482 (1986-10-01), Matsuda
patent: 4644250 (1987-02-01), Hartgring
patent: 4661879 (1987-04-01), Sato
patent: 4686383 (1987-08-01), Croft
patent: 4691129 (1987-09-01), Einzinger
patent: 4716511 (1987-12-01), Masaki

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