Simple Sound Alarm Generator using CD4011

Saturday, October 4th, 2008
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This is Music Sound Generator circuit. It is basic and simple circuit. By use integrated circuit digital number CD4011 or MC14011 or TC14011,it be nand gate logic. By three this circuit is giving can the sound about 10watt by use 8ohm loudspeakers and use power supply voltage 12V. Friends can lead this [...]

Easy kick out steal

Saturday, October 4th, 2008
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Although the prevent steal or Circuit this be model to be easy the system is simple. but I thinks it may help can protect your assets. The principle is simple be the system Close Wire Loop. It will make a noise to warn when the circuit torn , by [...]

Burglar Alarm Circuit by 2N2222

Monday, September 8th, 2008
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At this period the economy not good, Make have steal plentiful. We come to try build the circuit steal model to is simple better. The Alarm Sound (Super Bell) loud forever until will cut power supply to go out. When the Switch of the magnet Senate was opened or [...]