In this post we will learn how to build a simple FM remote control circuit for toggling small AC loads such as lamps, fans etc using an ordinary FM transmitter […]
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How to make a Transistor Latch Circuit
In this post we learn how to make a simple transistor latch circuit using just two BJTs and a few resistors. Introduction A transistor latch is a circuit which latches […]
Vehicle Immobilizer Circuit Explained
If you own a car and still haven’t incorporated any security system in it or perhaps your old security system is out of order, you can quickly opt for a […]
10 Automatic Emergency Light Circuits
The article describes a 10 simple automatic emergency light circuits using high bright LEDs. This circuit can be used during power failures and outdoors where any other source of power […]
AC 220V/120V Mains Surge Protector Circuits
Voltage spikes can sometimes be a big nuisance as far as the safety of the various electronic appliances are concerned. Let’s learn how to make a simple AC Mains surge […]
How to Calculate Transformerless Power Supply Circuits
This post explains how to calculate resistor and capacitor values in transformerless power supply circuits using simple formulas like ohms law. Analyzing a Capactive Power Supply Before we learn the […]