Optocoupler dimmer circuit for high intensity, gaseous...

Details Optocoupler dimmer circuit for high intensity, gaseous... Optocoupler dimmer circuit for high intensity, gaseous...

H - Electricity

05

B

315/44

H05B 41/392 (2006.01) H05B 41/16 (2006.01)

Patent

CA 1112294

OPTOCOUPLER DIMMER CIRCUIT FOR HIGH INTENSITY, GASEOUS DISCHARGE LAMP ABSTRACT OF THE DISCLOSURE A dimmer circuit for a high intensity, gaseous discharge lamp having a ballast with a reactive portion, the current bypass or partial bypass of which determines the brightness of the lamp, the bypass being controlled by gated bypass means, preferably in the form of a triac, driven by the photodrive element of an optocoupler, the light emitting diode element of the optocoupler receiving pulses and actuating the photodrive element for passing a gate trigger signal to the gated bypass means.

322438

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