Patent ID: 6114813
Filing Date: 2000-09-05
Classification: H05B,Y02B,Y10S

Abstract:
A light sensitive dimmer switch circuit for controlling the illumination level of a light as a function of the ambient illumination level comprising:a resistive network including a photocell, the photocell being responsive to the ambient illumination level, the resistive network having an equivalent resistance associated therewith, the equivalent resistance varying as a function of the photocell responding to the ambient illumination level;a firing capacitor which charges to a firing voltage in response to the equivalent resistance of the resistive network;means for generating a trigger signal when the firing capacitor is substantially charged to the firing voltage; andmeans for switching an AC power signal in response to the trigger signal and correspondingly permitting the AC power signal to be provided to the light for a selective portion of a cycle of the AC power signal.