Solid state switch

Details Solid state switch Solid state switch

1980-03-17

1982-03-30

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307252B, 307252UA, 307311, H03K 1772

Patent

active

043226370

ABSTRACT:
A solid state switch comprises a photo-thyristor optically coupled to a light emitting diode for actuating the photo-thyristor; a photo-diode, with anode and cathode electrodes thereof connected to the cathode and anode electrodes of the photo-thyristor, respectively; and a second light emitting diode for activating, upon energization thereof, the photo-diode to keep the gate electrode of the photo-thyristor in a backwardly biased state. The second light emitting diode may be energized from voltage appearing between the anode and cathode electrodes of the photo-thyristor to form a zero-voltage activated solid state switch.

REFERENCES:
patent: 3328606 (1967-06-01), Pinckaers
patent: 3708672 (1973-01-01), Marinkovic
patent: 3816763 (1974-06-01), Korn et al.
patent: 4129785 (1978-12-01), Kadah
patent: 4176288 (1979-11-01), Komatsu et al.
patent: 4212024 (1980-07-01), Sugawara et al.

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