An Earth Fault Indicator Circuit is like a watchdog for your electrical system. It checks for problems where electricity leaks out to the ground, like a bad wire touching a metal box. This is important because such leaks can cause shocks, fires or broken appliances. The circuit works by looking at how much electricity goes […]
Indicator Circuits
Simple Mains AC Transients Indicator Circuit
Imagine you have a device to monitor the ups and downs in your homes electricity. This circuit is like that device, but specifically for sudden voltage spikes. These spikes can be caused by things like lightning, appliances turning on or changes in power usage. The circuit has a sensor that constantly checks the voltage. If […]
Simple Blown Fuse Indicator Circuit with Flashing LED
Stop squinting at your fuses! This clever circuit with a flashing LED is like a tiny snitch for your electronics. Normally, the LED stays bright, letting you know everything is humming along. But if a fuse blows because of a power surge or something wonky the LED starts blinking like a disco ball. That is […]
Simple Low Battery Indicator Circuit using Two Transistors
This article discusses how to construct a small assistance circuit for the battery powered devices. When the battery is running low it uses only a few components including two transistors to light up an LED. In this way it will be able decide when to change the battery before the device goes out. Circuit Diagram: […]
Simple Coffee Temperature Indicator Circuit
Ever burnt tongue on coffee that is way too hot? This post shows how to build a special circuit that tells exactly how hot your coffee is! It uses a sensor to measure the temperature and lights LEDs to show if it is just right for drinking. This way one can enjoy coffee at the […]
Simple Heads or Tails Decision Maker Circuit
Making a fun electrical coin flipper is shown by this circuit. Just like when you flip a coin and while pressing a button it causes a small silicon chip in a computer to quickly give the ‘heads’ or ‘tails’ answer! What is a Heads or Tails Decision Maker Circuit: A ‘heads or tails’ decision maker […]