Lamp dimmer circuit utilizing opto-isolators

Details Lamp dimmer circuit utilizing opto-isolators Lamp dimmer circuit utilizing opto-isolators

1980-12-31

1983-07-26

La Roche, Eugene

Electric lamp and discharge devices: systems

Current and/or voltage regulation

250551, 315199, 315DIG4, 323326, 323902, H05B 3702

Patent

active

043956602

ABSTRACT:
A solid-state dimmer control circuit using opto-isolators, whereby the effective power to be supplied to a load is selectively varied. The opto-isolators couple a variable pulse switching circuit to a full-wave switching circuit which includes back-to-back silicon-controlled rectifiers. The variable pulse switching circuit is connected to means for generating a selectively variable control signal that is proportional to the power to be supplied to the load. A single a.c. power source is provided both switching circuits.

REFERENCES:
patent: 4238723 (1980-12-01), Jenks
patent: 4311956 (1982-01-01), Tolmie, Jr.

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