In this post we learn how to make a decorative LED music level indicator or music activated LED lights using a single IC and we also learn the main datasheet […]
3 State Battery Charge Indicator Circuit
This posts tells you how to make a simple 3 state battery charge level indicator circuit 3 LEDs and a couple of opamps Circuit Description To find out the condition […]
Test Logic with this Logic Probe Circuit
With this logic probe circuit the user will be able to verify the various logic levels in a given digital circuit, and help him to diagnose a given fault in […]
Darkness Safety Light Circuit for Bikers and Pedestrians
In this article we study a neat little LED flasher circuit which could help the bikers and pedestrians, runners, to create a blinking safety light on their body outfit, such […]
Mains Wiring Phase, Neutral, Earthing Tester Circuit
The post discusses a circuit which can be used for testing mains wiring phase, neutral, earthing line faults simply through 3 neon lamp illumination with a specified pattern, let’s learn […]
Simple LED Stopwatch Using IC 555 and IC 4017
In this post we are going to construct a simple LED stopwatch using IC 555 timer and IC 4017 decade counter. The elapsed time is indicated by LEDs which illuminates […]