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Newly Updated Circuit Projects:

Rain Triggered Instant Start Windshield Wiper Timer Circuit

Last Updated on May 16, 2026 by Swagatam 6 Comments

raintriggererdwipercircuit

The following circuit was requested by one of the readers of this blog Mr. Keval. The actual request was for a rain triggered windshield wiper circuit, but the idea here has been further enhanced with a quick start feature for better efficiency. How Conventional Wiper Systems Work Normally, electronic wiper control circuit involve a bistable for switching the […]

Filed Under: Automobile Electronics Tagged With: Instant, Rain, Start, Triggered, Windshield, Wiper

Comparing MOSFETs with BJTransistors – Pros and Cons

Last Updated on May 20, 2026 by Swagatam 4 Comments

mosfetandtransistorpinouts

The post comprehensively discusses the the similarities and difference between mosfets and BJTs and also their particular pros and cons. Introduction When we talk of electronics, one name becomes extremely related or rather common with this subject and that is the transistors, more precisely the BJT. Electronics is in fact based on these outstanding and indispensable member, without which […]

Filed Under: Electronics Theory Tagged With: BJTransistors, Comparing, Cons, MOSFETs, Pros

Simple PIR LED Lamp Circuit

Last Updated on June 1, 2026 by Swagatam 121 Comments

pir light activated sensor circuit

The following PIR LED lamp circuit was designed by me for one of the followers of this blog Mr.Deepak upon his request. The circuit is a LED driver which responds to ambient light as well as to the presence of a human, person or intruder, and varies its illumination accordingly, let’s know more. Technical Specifications “I was looking to […]

Filed Under: Lamps and Lights Tagged With: Lamp, LED, PIR, Simple

2 Cool 50 Watt Inverter Circuits for Students and Hobbyists

Last Updated on January 19, 2025 by Swagatam 170 Comments

502Bwatt2Bmosfet2Binverter2Bcircuit

A 50 watt inverter circuit might look quite trivial, but it can serve some useful purposes to you. When outdoors, this small power house can be used for operating small electronic gadgets, soldering iron, table top radios, incandescent lights, fans etc. Let’s learn 2 homemade 50 watt inverter circuit designs, beginning with a brief description […]

Filed Under: Inverter Circuits Tagged With: Circuits, Cool, Hobbyists, Inverter, Students, Watt

Make a Battery Charger in 15 Minutes

Last Updated on May 17, 2026 by Swagatam 92 Comments

easiestbatterychargercircuit

I have posted many battery charger circuits in this site, some are easy to build but less efficient, while some are too sophisticated involving complex construction steps. The one posted here is possibly the easiset with its concept and also is extremely easy to build. In fact if you had all the required material you […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Minutes

Easiest Single Axis Solar Tracker System

Last Updated on January 14, 2023 by Swagatam 8 Comments

algorithmbasedsolartrackermechanismcircuit

In this post I have explained how to make a very easy solar tracker circuit using a predetermined algorithm through a 555 IC timer circuit. Introduction In this site I have already published a solar tracker system circuit which is intended for automatically adjusting the solar panel face such that it stays perpendicular to the incident sun rays at […]

Filed Under: Solar Controller Circuits Tagged With: Axis, Easiest, Single, Solar, System, Tracker

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