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Newly Updated Circuit Projects:

Cellphone Charger Circuit Using Pendulum Generator

Last Updated on May 20, 2026 by Swagatam 20 Comments

electricityfrommotor

This pendulum electricity generator can be used in villages for charging cellphones free of cost just by applying momentary pushes to the pendulum frequently or as desired throughout the day. Pendulum as Free Electricity Generator In one of my previous articles I explained about the high efficiency value of a pendulum mechanism, and how it […]

Filed Under: Energy from Magnets and Earth Tagged With: Cellphone, Charger, Generator, Pendulum

Make this Gravity LED Lamp Circuit

Last Updated on May 20, 2026 by Swagatam 20 Comments

gravity2BLED2Blamp2Bcircuit

In this article we investigate a free energy device concept in the form of a gravity LED lamp circuit for illuminating an LED through force of gravity. The Circuit Concept Gravitational force is an awesome source of energy, amply available on this planet, and easily accessible, however, nobody yet has been able to convert this […]

Filed Under: Energy from Magnets and Earth Tagged With: Gravity, Lamp, LED

1 watt LED Lamp Circuit Diagram using SMD LEDs

Last Updated on June 8, 2026 by Swagatam 21 Comments

12Bwatt2BLED2Busing2B5mm2BLED

The post comprehensively discusses the construction procedure of a 1 watt LED lamp using SMD LEDs such as 3528 smd LEDs or 2214 SMD LEDs. I have explained the details. 1 Watt LED vs 3528 smd LEDs or 2214 SMD LEDs Today 1 watt LEDs are very popular and these are utilized in most LED lamp […]

Filed Under: Lamps and Lights Tagged With: Lamp, LED, LEDs, SMD, Watt

Simple Musical Door Bell Circuit

Last Updated on May 15, 2026 by Swagatam 35 Comments

doorbell circuit

A very simple musical door bell circuit can be built and installed in homes, the design features a replaceable music chip option, and an adjustable ringtone duration, as per the user preference, we’ll learn the entire circuit procedure through the following article. Today we can find a huge range of door bells in the market […]

Filed Under: Audio and Amplifier Projects Tagged With: Bell, Door, Musical, Simple

SMPS Voltage Stabilizer Circuit

Last Updated on July 5, 2025 by Swagatam 165 Comments

voltage2Bstabilizer2Bcircuit

In this article I have explained a solid state switch-mode mains voltage stabilizer circuit without relays, using a ferrite core boost converter and a couple of half-bridge mosfet driver circuits. The idea was requested by Mr. McAnthony Bernard. Technical Specifications Of late i started looking at voltage stabilizers use in house hold to regulate utility […]

Filed Under: SMPS and Converters Tagged With: SMPS, Stabilizer, Voltage

Adjustable CDI Spark Advance/Retard Circuit

Last Updated on July 1, 2026 by Swagatam 66 Comments

advance2Bretard2Bignition2Bcircuit

In this post we’ll learn about a simple circuit which allows a manual adjust feature for the spark timing of a motorcycle’s CDI either to achieve an advance ignition, retarded ignition or simply a normal timed ignitions. After a comprehensive study regarding the subject I was apparently successful in designing this circuit which can be […]

Filed Under: Automobile Electronics Tagged With: Adjustable, Advance, CDI, Retard, spark

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