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October 2, 2010
If you forget to switch off the light after leaving a seldom used room (such as the loft), there’s a strong likelihood that it could remain lit for months, running up an expensive power bill... [more]
circuit from:http://www.extremecircuits.net/2010/05/put-that-light-out.html
August 8, 2010
In all the houses exist the bells in the door. All want, they have the possibility of being possible to change the intensity, the tone of sound. With this circuit we have this possibility. With... [more]
August 8, 2010
If you’re expecting an important visitor but you just have to step out for a moment, an electronic doorbell memory can come in handy so you can see whether someone rang while you were out.... [more]
circuit from:http://www.extremecircuits.net/2010/04/doorbell-memory-circuit-diagram.html
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