This non contact inductive current sensor circuit is designed to detect an alternating current (AC) flow within any circuit and its cables, without undergoing any direct contact with the conductor, […]
Non-stop Newton’s Cradle Circuit
Many individuals have witnessed the desktop ornament/toy known as a ‘ Newton’s cradle’ (see figure 1), which includes generally five steel balls suspended in a row from a set of […]
Ferrous, Non-Ferrous Metal Detector Circuit
The function of this adsorption type metal detector is to indicate the presence of ferrous and non-ferrous type metals. Its functionality depends on the absorption of magnetic energy. An inductor […]
Non-Contact AC Mains Tester Circuit
The simple transistor based non contact AC mains tester circuit will allow you to test the presence of mains AC hum from a distance of about 3 inches. The LED […]
Non-Contact Voltage Detector Circuits Using Transistors and IC
In this post we are going to discuss a few non-contact voltage detector/tester circuits for checking the presence of active mains live wire. We will be understanding what non-contact voltage […]