Light-triggerable thyristor having low-loss feed of the trigger

Details Light-triggerable thyristor having low-loss feed of the trigger Light-triggerable thyristor having low-loss feed of the trigger

1986-03-31

1988-07-12

James, Andrew J.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

357 30, 357 74, 357 75, 250227, 350 9615, 350 9620, 350 9621, H01L 2974, H01L 3116, H01L 2310, H01L 2940

Patent

active

047573660

ABSTRACT:
A light-triggerable thyristor comprises a cathode contact and a light conductor arranged in a bore thereof for supplying trigger energy. In order to obtain optimally low losses of the trigger energy and to guarantee simple assembly and interchangeability, the end of the light conductor at the side of the thyristor is surrounded by a rigid sleeve which is pluggable into a sleeve-shaped insert mounted in the bore. In particular, a central region of the cathode contact is fashioned raised in comparison to a flange-like projection of the cathode contact which is connected to a ceramic envelope, and the central region is provided with a groove which serves for receiving an angled portion of the rigid sleeve. The invention is particularly suited for power thyristors in high-voltage DC transmission systems.

REFERENCES:
patent: 4307934 (1981-12-01), Palmer
patent: 4368481 (1983-01-01), Ohashi et al.
patent: 4466009 (1984-08-01), Konishi et al.
Konishi et al, "High-Power Light Activated Thyristors", IPEC, Tokyo 1983, pp. 559-570.

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