The post explains a simple dark triggered porch light or corridor light circuit using a single IC 741 and few other passive components. This arrangement enables you to automatically switch […]
Proximity Detector Circuit – LC Tuned IC CS209
The post details an LC tuned proximity detector circuit, using a LC tank circuits and the IC CS209A This is a straightforward proximity switch circuit using IC CS209. The CS209A […]
Metal Detector Circuit using a Single IC
In this post we learn how to make a simplest metal detector circuit using a single CMOS IC 40106 Simple metal detector circuit The metal detection circuit displayed here might […]
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 […]
10 Channel Capacitive Touch Switch Circuit
In this article we are going to construct a capacitive touch switch circuit with 10 channel output, the state of the each channel can be turned ON and OFF sequentially […]
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 […]