Gate control apparatus

Details Gate control apparatus Gate control apparatus

1976-04-28

1978-03-14

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307240, H03K 1760

Patent

active

040792706

ABSTRACT:
In a semiconductor device which includes a main thyristor and an auxiliary thyristor for turning off the main thyristor and controls conduction period of the main thyristor according to a given duty factor, a gate control apparatus comprising a phase shifter for producing a square wave output corresponding to the duty factor, an integrator for integrating the output of the phase shifter, a relay circuit having two level settings and receiving the output from the integrator to produce an output which exhibits a hysterisis characteristic corresponding to the two level settings, and an amplifier for turning on the main thyristor in response to the output from the relay circuit and turning on the auxiliary thyristor upon the termination of the output from the relay circuit.

REFERENCES:
patent: 3747000 (1973-07-01), McIver

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