Semiconductor switch with thyristors

Details Semiconductor switch with thyristors Semiconductor switch with thyristors

1978-03-09

1980-08-12

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307305, 357 38, H03K 1772

Patent

active

042175046

ABSTRACT:
A semiconductor switch including a main thyristor and an auxiliary thyristor which can both be switched on and off by a control current. The anodes of the two thyristors are connected together and lead to a first load current terminal for the switch, the cathode of the main thyristor leads to a second load current terminal for the switch, the control electrode of the main thyristor is connected with the cathode of the auxiliary thyristor, and the control current for the switch is fed in via the control electrode of the auxiliary thyristor. The turn-off gain of the main thyristor is greater than the turn-off gain of the auxiliary thyristor and the holding current of the auxiliary thyristor is lower than the holding current of the main thyristor.

REFERENCES:
patent: 3590346 (1971-06-01), Bilo et al.
patent: 3794890 (1974-02-01), Weimann et al.
patent: 4083063 (1978-04-01), Yu
IEEE Conference Record Of IAS, 1973 Eighth Annual Meeting, E. Wolley et al., "Characteristics of a 200 AMP Gate Turn-Off Thyristor," pp. 251-255, Oct. 11, 1973.

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