Earthquake Sensor Circuit – Seismic Sensor

The article shows an earthquake sensor circuit idea which incorporates an innovative way of detecting the minutest of shocks caused by a possible earthquake tremor. The circuit is so sensitive that it is able to detect tremor of 4 on the Richter scale, yet remains unaffected to loud sounds or irrelevant bangs or noises. Introduction … Read moreEarthquake Sensor Circuit – Seismic Sensor

Cell Phone Controlled Door Lock Circuit

Controlling your door lock through your personal cell phone was never this easy. Learn how to build a simple electronic circuit that will help in converting your ordinary door lock into a high security door lock which can be now controlled through your own cell phone. Your ordinary door lock can be now very easily … Read moreCell Phone Controlled Door Lock Circuit

2 Simple Earth Leakage Circuit Breaker (ELCB) Explained

The discussed Earth leakage circuit breaker diagrams will silently monitor the electrical condition of your appliances and the Earth connection of your house. Here we will learn 2 designs, first using transistors only and the second using IC LM324. Introduction If anything goes wrong with them it will instantly switch off the mains and stop … Read more2 Simple Earth Leakage Circuit Breaker (ELCB) Explained

A Homemade Fence Charger, Energizer Circuit

The electric fence charger circuit presented here is basically a high voltage pulse generator. The super high voltage is derived from a commonly used automobile ignition coil. An astable multivibrator is used to generate the required frequency to drive the ignition coil. Another astable is used to control the pulses supplied to the fence. Protecting … Read moreA Homemade Fence Charger, Energizer Circuit