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Newly Updated Circuit Projects:

Remote Controlled Night Lamp Circuit

Last Updated on July 3, 2019 by Swagatam 74 Comments

IRtimerremotelampcircuit

In this post I have explained a simple IR based remote controlled night lamp timer circuit. The idea was requested by Mr. Raj Kumar Mukherji. Technical Specifications Please provide the component values and the modified circuit if: a. the circuit is made to work from 4.5 volts or 5 volts b. the relay is replaced […]

Filed Under: Remote Control Circuits Tagged With: Controlled, Lamp, Night, Remote

Transistor based 3 Phase Sine Wave Generator Circuit

Last Updated on September 22, 2026 by Swagatam 78 Comments

3phasegeneartorUsingTransistors

In this post I have explained a very simple 3-phase sine wave generator circuit, using only three bipolar transistors and a few passive components for initiating the desired three phase output. How it Works Referring to the 3 phase sine wave generator circuit we can see three identical transistor stages configured in a cross coupled […]

Filed Under: Oscillator Circuits Tagged With: Based, Generator, Phase, Sine, Transistor, Wave

Motorcycle Voltage Regulator Circuits

Last Updated on September 13, 2026 by Swagatam 243 Comments

mosfetregulatorcircuit3phase

In the article below I have explained a compilation of simple yet accurate motorcycle voltage regulator circuits, which can be used for regulating the varying alternator voltage into a fixed DC voltage. Voltage regulator circuit is very important in motorcycles and two wheelers since they ensure a regulated battery charging thus keeping the battery safe […]

Filed Under: Automobile Electronics Tagged With: Circuits, Motorcycle, Regulator, Voltage

Water Softener Circuit Explored

Last Updated on June 23, 2019 by Swagatam 23 Comments

parallelpath

In this post I have explained a circuit design which can be used for softening hard water and for descaling it into soft water. The idea was requested by Dimple rathode. Technical Specifications My name is Dimple and i am an electronic hobbyist. I look up to your blog whenever i have any doubt regarding […]

Filed Under: Water Controller Tagged With: Explored, Softener, Water

How to Make a 3 Phase VFD Circuit

Last Updated on June 30, 2026 by Swagatam 348 Comments

pwmvoltageregulator

The presented 3 phase VFD circuit (designed by me) can be used for controlling the speed of any three phase brushed AC motor or even a brushless AC motor. The idea was requested by Mr. Tom Using the VFD The proposed 3-phase VFD circuit can be universally applied for most 3-phase AC motors where the […]

Filed Under: Grid and 3-Phase, Motor Controller Tagged With: Phase, VFD

How to Build a Grow Light Circuit

Last Updated on June 1, 2026 by Swagatam 7 Comments

growlightcircuit

In this post I have explained a typical grow light circuit application for plants in order to stimulate photosynthesis effect in an artificially lit environment using multicolored LEDs. The idea was suggested by Mr. Jack. The Circuit Objective I would like to donate to your site and pay you also for work you do on projects […]

Filed Under: Lamps and Lights Tagged With: Build, Grow, Light

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