Can you imagine the display on your calculator or phone that needs a tiny translator. A display driver circuit is like that translator. It gets information from a tiny computer microcontroller and changes it into a special code that the display understands. This code tells the display exactly which lights or pixels to turn on […]
Indicator Circuits
Simple Earth Fault Indicator Circuit
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 […]
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 post shows you how to build a tiny helper circuit for your battery powered devices. It uses just a few parts including 2 transistors to light up an LED when the battery is getting low. This way, you will know when it is time to replace the battery before your device stops working. Circuit […]
Simple Coffee Temperature Indicator Circuit
Ever burnt your tongue on coffee that is way too hot? This post shows you how to build a special circuit that tells you exactly how hot your coffee is! It uses a sensor to measure the temperature, and lights LEDs to show you if it is just right for drinking. This way, you can […]