Circuit arrangement for drive of a thyristor with light

Details Circuit arrangement for drive of a thyristor with light Circuit arrangement for drive of a thyristor with light

1984-10-24

1986-03-25

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307252N, 307252UA, 307311, 307581, H03K 1760, H03K 345, H03K 17687

Patent

active

045785953

ABSTRACT:
A circuit arrangement for drive of a thyristor with light comprises a zero pause control which permits an ignition of a thyristor only in a proximity of a zero point of the thyristor voltage. The control contains an IGFET which transports away a base current of the phototransistor effecting ignition when the thyristor voltage exceeds a specific value. The gate terminal of the IGFET connects to an alternating voltage via a photodiode. The zero point control can only be activated when the photodiode is illuminated.

REFERENCES:
patent: 4021683 (1977-05-01), Splatt
patent: 4217618 (1980-08-01), Kellenbenz et al.
patent: 4295058 (1981-10-01), Lade et al.
patent: 4324989 (1982-04-01), Stut
patent: 4413192 (1983-11-01), Crockett
patent: 4535251 (1985-08-01), Herman et al.
Siemens Components, XVII (1982) No. 2, "Solid State Relays (SSR) Performance and Practical Use", by Walter Brunnler, pp. 83-87.

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