Light-Operated Streetlight (15)

Published:2011/7/1 6:30:00 Author:Sue | Keyword: Light-Operated, Streetlight | From:SeekIC

The 220v voltage will provide the light-operated circuit with +12v working voltage after rectification, filtration and stablization. In the daytime, RG1 and RG2 will have low resistance values. IC's S1 will output low level. R1 will output high level. Q1 will output low level. V is disconnected and K is released. EL is not illuminated. When it is dark, RG1 and RG2 will have higher resistance values. IC's S1 will output high level. R1 will output low level. Q1 will output high level. V is connected and K is connected. EL will be illuminated.



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