An electrical relay consists of a electromagnet and a spring loaded changeover contacts. When the electromagnet is switched ON/OFF with a DC supply, the spring loaded mechanism is corresponding pulled […]
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Vehicle Speed Detector Circuit for Traffic Police
In this post we are going to construct a circuit which can measure the speed of any vehicle on roads and highways. The proposed circuit is kept stationary at a […]
Arduino Full-Bridge (H-Bridge) Inverter Circuit
A simple yet useful Microprocessor based Arduino full-bridge inverter circuit can be built by programming an Arduino board with SPWM and by integrating a few mosfets with in H-bridge topology, […]
Using Microwave Oven Parts to build a Soldering Iron Heat Controller
In this post we learn how to scavenge discarded microwave oven parts for making a useful soldering iron heat controller circuit which can then be used for maintaining controlled heat […]
Simple Transformer Winding Tester Circuit
This test set is primarily designed to test step-down, step-up transformers, for open and shorted winding. It can determine if the device under test has a low resistance to ac […]
Incubator Using Arduino with Automatic Temperature and Humidity control
In this post we are going to construct an incubator using Arduino which can self-regulate its temperature and humidity. This project was suggested by Mr. Imran yousaf who is an […]