Solid state interrupt circuit

Details Solid state interrupt circuit Solid state interrupt circuit

1983-06-27

1985-07-16

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

361 18, 361101, 307252K, 307252Q, 323908, H02H 308

Patent

active

045300232

ABSTRACT:
A pair of PNPN thyristors are used to provide a solid state fuze for circuit protection. One of the pair of thyristors is self-biased on and provides normal current flow. The other thyristor turns the first thyristor off during a surge condition. A current sensing resistor is placed in series with the first thyristor to provide bias to the second transistor. The circuit will automatically reset itself when the surge condition is no longer present.

REFERENCES:
patent: 3263128 (1966-07-01), White
patent: 3317752 (1967-05-01), Zuk
patent: 3434022 (1969-03-01), Byrd
patent: 3521087 (1970-07-01), Lombardi
patent: 3769572 (1973-10-01), Doubt
patent: 3996498 (1976-12-01), Schade, Jr.

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