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How to Generate Electricity from Sea Waves – 2 Simple Methods

Last Updated on January 21, 2026 by Swagatam 4 Comments

seawaterelectricity

In this post we investigate a couple of quick and efficient methods of generating free electricity from the sea waves which is limitless and an infinite source of energy. Introduction Just like wind and sun, sea is another example of massiveness and a potential raw energy source that may be harnessed for acquiring electrical power. […]

Filed Under: Renewable Energy Tagged With: Electricity, Generate, Methods, Simple, Water

10 Simple LED Chaser Circuit Diagrams Explained [Knight Rider, Scanner, Reverse-Forward, Cascaded]

Last Updated on January 16, 2026 by Swagatam 172 Comments

knight rider 2

In this article I have explained the construction of 10 interesting yet simple LED chaser circuits, which not only create beautiful running light effect but are also easy to build. We also discuss how to modify these into a design popularly known as “knight rider” chaser circuit. These primarily incorporate LEDs as well as mains […]

Filed Under: Lamps and Lights Tagged With: Chaser, Diagrams, Explained, Knight, LED, Simple

10 LED Simple Roulette Wheel Circuit Diagram

Last Updated on January 4, 2026 by Swagatam 23 Comments

A very simple 10 LED roulette wheel circuit is shown here. pressing the button starts the LEDs in a rotational motion (sequencing) at full swing initially, and gradually slows down, until it stops to a particular, randomly selected LED. The randomness of the selection depends upon the time for which the push remains switched ON […]

Filed Under: Games and Sports Projects Tagged With: LED, Roulette, Simple, Wheel

10 Simple FM Transmitter Circuit Diagrams Explained

Last Updated on January 2, 2026 by Swagatam 132 Comments

two transistor FM transmitter

An FM transmitter circuit is a high frequency wireless device which is able to transmit voice signals into atmosphere so that it can be received by a corresponding FM receiver circuit for reproducing the voice signals in a loudspeaker. Here we’ll discuss how to build small FM transmitter circuits using 10 different methods, one that […]

Filed Under: Wireless Circuits Tagged With: Diagrams, Explained, FM, Simple, Transmitter

4 Simple Transformerless Power Supply Circuits Explained

Last Updated on December 24, 2025 by Swagatam 438 Comments

In this post I have explained 4 easy to build, compact simple transformerless power supply circuits. All the circuits presented here are built using capacitive reactance theory for stepping down the input AC mains voltage. All the designs presented here work independently without any transformer, or no transformer. The Transformerless Power Supply Concept As the […]

Filed Under: Power Supply Circuits Tagged With: Circuits, Explained, Power, Simple, Supply, Transformerless

5 Simple Electronic Dice Circuits Explained [Digital Dice]

Last Updated on December 16, 2025 by Swagatam 12 Comments

dice compressed

We all know what a dice is and how manually a dice is shuffled and thrown to get a random number. In older times when we did not have computer games or mobile games, we used to play with various indoor games that required tossing a cubical thing called dice having 1 to 6 dots […]

Filed Under: Games and Sports Projects Tagged With: Circuits, Dice, Digital, Electronic, Explained, Simple

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