Firing apparatus for a plurality of electric valves

Details Firing apparatus for a plurality of electric valves Firing apparatus for a plurality of electric valves

1974-11-29

1976-03-16

Borchelt, Archie R.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250216, 250578, 307252L, 315152, 315155, H03K 1778

Patent

active

039448150

ABSTRACT:
The invention concerns a firing device for a number of electric valves, particularly thyristors. Each thyristor control path is associated with a firing circuit with a detector for electromagnetic radiation responsive to a transmitter which is controlled by a firing control signal and is equipped with a radiating device which energizes the individual detectors. The detectors are arranged close together in a plane perpendicular to the radiation direction of the radiator. In order to obtain latitude in the arrangement of the detectors, the radiator is designed so that it furnishes a parallel-ray bundle of radiation and the detectors are spatially arranged relative to each other, such that they are exposed to the parallel ray bundle without mutual shadowing upon projection in the direction of the radiation on a projection plane which is perpendicular to the radiation direction.

REFERENCES:
patent: 3386027 (1968-05-01), Kilgore et al.
patent: 3646427 (1972-02-01), Koval et al.
patent: 3671749 (1972-06-01), Harnden
patent: 3723768 (1973-03-01), Eccles et al.

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