Use TWH8751 street light control circuit


Posted on Mar 28, 2007

Automatic lights using a light twist, it TWH87sl power switch integrated circuit composed of a first input terminal TWH8751 O feet to the positive terminal of the power supply,


Use TWH8751 street light control circuit
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the output pin state by the end strobe terminal that is electrically feet first level control. During the day, RP by natural light exhibits low resistance, strobe terminal feet high, so the output terminal feet high, the relay K is not action, not bright lights E. Night, Rl. Light exposure exhibits high electrical resistance, strobe terminal feet low, TWH8751 internal Darlington turned, pin is low, the relay K pull its station close contacts kl, powered lights E light. Adjusting the resistance of RP can adjust the sensitivity of the light control circuit. R., C. A pulse interference absorption circuit, can eliminate amidine nighttime light on the impact short circuit. T bite Chuan 220V: 121:, jVA small, high quality power transformer. K blood select the appropriate load size I according to operating voltage of 12V relay, such as JZ ( 22F, DC12V type.




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