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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Automatic switching of elecric appliances

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Tamilmani

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Hi..i need a circuit which can sense the infrared radiation emitted by humans so that the electric appliances in a room are on..when there is no one in the room,the lights and fans should automatically get off.give some ideas!!!!
 
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