Simple Water Level Indicator

jacky July 21, 2018 271 Comments
Water Level Indicator Description This is the circuit diagram of a simple corrosion free water level indicator for home and industries. In fact, the level of any conductive non-corrosive liquids can be measured using this circuit. The circuit is...
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Simple Lamp Dimmer/ Fan Regulator

admin November 22, 2011 33 Comments
A Lamp Dimmer/Fan Regulator Circuit We have modified this circuit: – Take a look – Modified Lamp Dimmer Description . This is the circuit diagram of the simplest lamp dimmer or fan regulator.The circuit is based on the principle...
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Fridge Door Alarm

jacky November 22, 2011 10 Comments
Fridge Door Alarm Circuit Description. This is a fridge door alarm circuit, which produces an audible alarm when fridge is left open for a preset time. This versatile alarm is based¬† on two 555 timer IC’s. Both ICs are...
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Automatic LED Emergency Light

admin January 23, 2018 322 Comments
LED Emergency Light We have developed three circuits under Automatic LED Emergency Light. Two of them are designed by Mr. Seetharaman, a very valuable and important contributor of this website. We have listed the circuits here for your ease...
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