Playing with electric wire is risky especially if we do not know electronics. Wrong use of electricity can be dangerous. So better to be safe before touching wire and first check if some electricity with leakage voltage is still there. This article for Simple Non-Contact 220V AC Detector Circuit using IC 555 show how to […]
Sensors and Detectors
Broken Cable Detector Circuit using IC CD 4069
This post is for Broken Cable Detector Circuit using IC CD 4069. In this circuit there is no need to open wire to check. It work like metal finder but find AC current in wire but not in metal. It uses chip CD 4069 and this chip has small switches to turn ON light or […]
TV Remote Signal Jammer Circuit
555 IC is used in this TV Remote Signal Jammer Circuit. It makes fake IR signals same as remote so TV get confused. TV can not get the real remote signal. We can watch the show without anyone changing the channel. Parts used to complete this circuit are IR LED, ceramic capacitor, NPN transistor, potentiometer, […]
Simple Metal Detector Circuit using IC 555
This is Simple Metal Detector Circuit using IC 555 It uses IC 555 chip which works like small clock and makes signal to help find metal and magnet It is easy to build and good for beginners. Circuit Working: Parts List: Component Type Value Quantity Resistor (1/4 watt) 47k 1 Capacitors Electrolytic 10μF 25V 1 […]
Simple Mains Phase Detector Circuit using CMOS ICs
This article talks about two easy and Simple Mains Phase Detector Circuit using CMOS ICs like IC 4001 and IC 4060. They find if mains AC 220V or 120V is present in air. No need to touch the mains. Circuit uses antenna to feel mains power in air. Circuit Working (using IC 4001): IC 4001 […]
Mobile Phone Detector Circuit using Transistors
Imagine we have a spy device that finds nearby mobile phones. Mobile Phone Detector Circuit using Transistors is like ear for special signals phones send to towers. It can catch signal even before phone rings like secret talk between phone and tower. It uses transistors, small switches to catch these signals. Circuit Working: Parts List: […]