Triggering method for light triggered thyristors

Details Triggering method for light triggered thyristors Triggering method for light triggered thyristors

1984-05-29

1986-02-25

Welsh, John D.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

338 17, 338 18, 357 30, H01L 1114, H01J 3912

Patent

active

045729476

ABSTRACT:
The present invention provides a method for triggering a light triggered thyristor (LT.sup.2) which method comprises using a light source to provide background excitation of carriers in at least the amplifying gate areas of the LT.sup.2 prior to triggering the device. The background excitation is of a low level and will not trigger the device or cause excessive leakage current. At the desired time a second light signal is used to trigger the LT.sup.2.

REFERENCES:
patent: 3459944 (1969-08-01), Triebwasser

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