Gate turn-off control circuit for a solid state circuit interrup

Details Gate turn-off control circuit for a solid state circuit interrup Gate turn-off control circuit for a solid state circuit interrup

1985-07-11

1986-12-23

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 11, 361 8, 361 56, H01H 942

Patent

active

046316213

ABSTRACT:
A gate turn-off thyristor is connected across a pair of separable contacts for diverting the interrupted current first to the thyristor and then to a metal oxide varistor connected across the thyristor. A saturable core current transformer in combination with the capacitance provided by the metal oxide varistor turns on the thyristor when the contacts separate and turns off the thyristor after the contacts have further separated when the core becomes saturated.

REFERENCES:
patent: 3588605 (1971-06-01), Casson
patent: 3783305 (1974-01-01), Lefferts
patent: 4001742 (1977-01-01), Howell
patent: 4115829 (1978-09-01), Howell
patent: 4389691 (1983-06-01), Hancock
patent: 4438472 (1984-03-01), Woodworth
patent: 4500934 (1985-02-01), Kinsinger

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