A simple infrared thermopile sensor circuit diagram is shown underneath. The op amp must be a excellent low-noise unit. We usually make use of the LTC1050 for such purposes, however […]
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 […]
Programmable Musical Organ Circuit
In this post we are going to construct a musical organ circuit whose musical tone can be programmed by adjusting 10 pre-sent resistors in the circuit and the speed of […]
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 […]
Simple Variable Power Supply Circuit for Benchwork
In case you assess the cost and the rating of this simple variable bench power supply you may receive a big surprise, as the output voltage and current tend to […]
Simple Electric Fencing Circuit
In this post we are going to make a simple electric fencing circuit which can protect your private property from animals and intruders and prevent them from gaining access. Note: […]