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Newly Updated Circuit Projects:

How to Generate Electricity from a Pendulum

Last Updated on May 20, 2026 by Swagatam 39 Comments

free2Benergy2Bfrom2Bpendulum

In this post I have explained how a pendulum mechanism can be used for achieving overunity and generate electricity in the form of free energy. Pendulum Working Principle We all know and have practically seen how a pendulum works or oscillates. Technically it may be defined as a mechanism made up of a shaft with […]

Filed Under: Energy from Magnets and Earth Tagged With: Energy, Free, Pendulum

How to Make HHO Fuel Cell Circuit in Automobiles for better Fuel Efficiency

Last Updated on June 30, 2026 by Swagatam 177 Comments

HHO2Bgas2Bin2Bmotorcycle

In this post we’ll try to investigate the making of HHO gas in automobiles for enhancing their mileage by approximately 50% or more, that means a reduction of petrol or diesel consumption by the same amount. In the previous post I tried to put forth an innovative design of a high voltage low current generator […]

Filed Under: Automobile Electronics, Energy from Magnets and Earth Tagged With: Automobiles, better, Cell, Efficiency, Fuel, HHO

PWM Solar Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 211 Comments

SMPSchargercircuit

This simple, enhanced, 5V zero drop PWM solar battery charger circuit can be used in conjunction with any solar panel for charging cellphones or cell phone batteries in multiple numbers quickly, basically the circuit is capable of charging any battery whether Li-ion or Lead acid which may be within the 5V range. Using TL494 for […]

Filed Under: Battery Charger Circuits, Solar Controller Circuits Tagged With: Battery, Charger, PWM, Solar

PWM Inverter Using IC TL494 Circuit

Last Updated on May 20, 2026 by Swagatam 242 Comments

PWM2BInverter2Bcircuit

A very simple yet highly sophisticated modified sine wave inverter circuit is presented in the following post. The use of the PWM IC TL494 not only makes the design extremely economical with its parts count but also highly efficient and accurate. Audio/Video Representation Using TL494 for the Design The IC TL494 is a specialized PWM […]

Filed Under: Inverter Circuits Tagged With: Inverter, PWM, TL494

Music Triggered Amplifier Speaker Circuit

Last Updated on May 15, 2026 by Swagatam 8 Comments

buzzercoil

The circuit idea I have explained below enables a power amplifier loudspeakers to switch ON only when there’s an input music available, otherwise it makes sure that the loudspeakers remain shut off. The idea ws requested by Mr. David Alda. Technical Specifications Your site is just awesome. I’m hoping you can post a tweak to […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Music, Speaker, Triggered

Simple RGB LED Color Mixer Circuit using LM317 IC

Last Updated on June 8, 2026 by Swagatam 22 Comments

High quality 3 watt rgb led with 2

In this post I have explained a simple LM317 IC based RGB 3 watt LED color mixer circuit, which can be used for demonstrating the color mixing effects of red, blue, green colors as specified in the standard color charts. The idea was requested by Mr.Praveen. Technical Specifications My name is Pravin, I work in […]

Filed Under: Lamps and Lights Tagged With: Color, LED, LM317, Mixer, RGB, Simple

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