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Newly Updated Circuit Projects:

Calculator to Design a High Power 3kW PFC (Power Factor Correction) Circuit

Last Updated on July 10, 2026 by Swagatam 6 Comments

In this post I will explain how to use this active PFC calculator for calculating high current, high PFC designs. In our example we will be using 230 VAC input and 3 kW output and Vout equal to around 390 V, and we will try to see how each resistor and capacitor gets calculated in […]

Filed Under: Grid and 3-Phase, Power Supply Circuits, SMPS and Converters, Voltage Control and Protection Tagged With: 3KW, Calculator, Design, High, PFC, Power

What is an Earth Torque Generator (ETG)? A New Concept for Unlimited Clean Energy

Last Updated on July 9, 2026 by Swagatam Leave a Comment

Contributor Credit: This conceptual proposal and the structural framework of the Earth Torque Generator (ETG) have been developed and contributed by Mr. Ike Higgins, continuing his ongoing dedication to introducing public-domain concepts for environmental restoration and planetary healing. Introduction In an effort to continue my quest to get new ideas for technology that will help […]

Filed Under: Energy from Magnets and Earth Tagged With: Concept, Earth, ETG, Generator, Torque, Unlimited

Rotating LED Chakra Circuit for God Idols

Last Updated on July 7, 2026 by Swagatam 20 Comments

rotating chakra using LEDs

LED Chakra is an ornamental lighting system which depicts or imitates a rotating wheel like appearance, by means of sequentially shifting Illuminated LED arrays. Indian subcontinent is a land of festivals and celebrations which mostly start from the month of August and continues until the New Year. All these festivals have one fundamental thing in […]

Filed Under: Lamps and Lights Tagged With: Chakra, Idols, LED, Rotating

DIY Power Bank using T856-C Module? How to Connect

Last Updated on July 4, 2026 by Swagatam 7 Comments

So here we are talking about one small board called T856-C. We use this little module when we want to make one DIY power bank at home, like those we use to charge phones and other USB things. It can charge one 3.7V Li-ion battery like 18650 and also give us 5V output to run […]

Filed Under: Battery Charger Circuits Tagged With: Bank, Connect, Module, Power, T856

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

18650 2600mAh Battery Datasheet and Circuit Diagram

Last Updated on June 30, 2026 by Swagatam 43 Comments

718777204 109

In this article I will try to explain the main specifications and datasheet of the Li-Ion cell 18650 2600 mAh, which is one of the most popular Li-ion batteries, and preferred by all electronic professionals due to its high efficiency, in terms power delivery and compact dimensions. Li-Ion batteries are one of the most advanced […]

Filed Under: Datasheets and Components Tagged With: 18650, 2600mAh, Battery, Datasheet

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