Field controlled thyristor control circuit with additional FCT i

Details Field controlled thyristor control circuit with additional FCT i Field controlled thyristor control circuit with additional FCT i

1981-07-10

1982-10-12

Clawson, Jr., Joseph E.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307283, 307284, 307287, 307305, 357 22, 357 38, H03K 1760

Patent

active

043541216

ABSTRACT:
A switching control circuit includes a first field controlled thyristor having a gate and a cathode between which a backward bias voltage source and a second field controlled thyristor are connected in series. Conduction of the second field controlled thyristor is controlled by controlling a voltage applied across the gate and the cathode, thereby to control conduction of the first field controlled thyristor. A large load current can be positively and safely turned on and off by a relatively small control current or voltage.

REFERENCES:
patent: 3821565 (1974-06-01), Horinaga
patent: 4037245 (1977-07-01), Ferro
patent: 4060821 (1977-11-01), Houston et al.

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