Photocoupler capable of effecting phase control with an embedded

Details Photocoupler capable of effecting phase control with an embedded Photocoupler capable of effecting phase control with an embedded

1995-04-24

1996-09-24

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

250214R, 327514, G02B 2700

Patent

active

055593402

ABSTRACT:
A photocoupler includes: a first chip formed with a light emitting element emitting light in response to an input current; and a second chip formed with a light receiving element outputting a current having a magnitude in association with the intensity of the light from the light emitting element, a capacitor formed of a PN-junction for storing charges from the output current from the light receiving element, and a Darlington circuit having the capacitor interposed between the base and emitter thereof, The first and second chips are sealed to form a single photocoupler which is capable of solely effecting phase control.

REFERENCES:
patent: 3932770 (1976-01-01), Fantozzi
patent: 4259939 (1981-04-01), Coates
patent: 4461955 (1984-07-01), Bezdek
patent: 4833346 (1989-05-01), Marple
patent: 5340993 (1994-08-01), Salina et al.

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