Lamp flasher circuit

admin April 7, 2010 6 Comments
Description. This simple circuit that can be used to flash incandescent lamps up to 10W power rating.The circuit is ideal for making flashing beacons on automobiles and other applications like that.The circuit is nothing but  an astable multi vibrator...
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FM adaptor circuit for car stereo

jacky April 7, 2010 7 Comments
Description. With this compact FM adaptor circuit plugged into the audio out of your cassete player or i Pod out put,you can listen your favorite music on your car stereo.This circuit is very useful if your car stereo doesnot...
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Electronic siren circuit

admin April 7, 2010 2 Comments
Description. This is a compact electronic siren circuit based on three transistors.This circuit is suitable for in corporating with other alarm or siren projects such as burglar alarms, automatic factory sirens etc or a simple push to on alarm....
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Water level alarm circuit

admin January 23, 2018 131 Comments
Description. Here is a simple water level alarm circuit using 555 timer that will produce an audible alarm when the water level reaches  a preset level.The circuit can be powered of a  3V battery and is very handy to...
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12 V Florescent lamp driver circuit

admin April 7, 2010 8 Comments
Description. Here is a simple and effective circuit for driving florescent lamps from a 12 V supply.The circuit is nothing but consists of an oscillator, a MOSFET switch and a step-up transformer for driving the florescent lamp. The IC1...
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Contactless telephone ringer circuit

admin April 7, 2010 5 Comments
Description. The contact less telephone ringer circuit can produce a ring as well as a visual indication when a call comes.The main advantage is that since there is no direct contact between the phone line and the circuit there...
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Mobile incoming call indicator

admin January 23, 2018 203 Comments
Description. This circuit can be used to escape from the nuisance of mobile phone rings when you are at home. This circuit will give a visual indication if placed near a mobile phone even if the ringer is deactivated....
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Shock alarm circuit

admin April 7, 2010 20 Comments
 Description. Here is a simple shock sensitive alarm circuit that has many many applications fro home to automobiles.The main application of this circuit is to use it as an anti theft alarm in automobiles.A peizo electric sensor is used...
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Automatic headlight dim switch.

admin April 7, 2010 20 Comments
Description. With this cool circuit integrated to your cars headlight system , you can drive cool headed in high beam.The circuit will take over the duty of low beaming the headlight when vehicles approach against , and high beams...
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Telephone off-hook indicator

admin April 7, 2010 2 Comments
Description. The circuit depicted here can be used as an indicator when the telephone receiver is off-hook. The circuit can be in corporated with old telephones that does not have such an indicator. The circuit uses a complementary darling...
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