Simple Water Level Indicator

jacky November 6, 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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Fridge Door Open Alarm

jacky November 3, 2018 11 Comments
Fridge Door Open Alarm Circuit Description A fridge door open alarm circuit is explained with its detailed working and circuit. The objective of this circuit is to produce an audible alarm when fridge is left open for more than...
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Automatic LED Emergency Light Circuit

admin October 23, 2018 327 Comments
LED Emergency Light An Automatic LED Emergency Light circuit is designed to turn ON when there is no adequate lighting or if the power supply is cut-off. Earlier fluorescent lights were used to build such circuits. But the use...
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