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Newly Updated Circuit Projects:

220 V Multiple Light Effect Generator Circuit

Last Updated on June 8, 2026 by Swagatam Leave a Comment

220 V light effect generator circuit

If you are looking for a multiple light effect generator circuit to generate sequencing, reverse/forward light effects, using 220 V colorful lamps, then this circuit might help you. How the Circuit Works The following figure displays the Light Effect Generator circuit diagram. This circuit has an oscillator, a few control logic stages, a 5 V […]

Filed Under: Lamps and Lights Tagged With: 220, Effect, Generator, Light, Multiple

0 to 50 V Adjustable Switching Power Supply Circuit using IC LM2576

Last Updated on May 7, 2023 by Swagatam 49 Comments

switching buck converter regulator circuit using IC LM2576

In this article I will try to explain the construction of a 1.23 V to 50 V adjustable switching power supply circuit using the IC LM2576. The LM2576 family of regulators is a monolithic integrated circuit that performs all of the active operations of a step-down (buck) switching regulator. It offers exceptional line and load […]

Filed Under: Power Supply Circuits Tagged With: Adjustable, LM2576, Power, Supply, Switching

22 Watt Stereo Amplifier Circuit using TDA1554

Last Updated on May 15, 2026 by Swagatam 2 Comments

PCB layout TDA1554

The IC TDA1554 based Amplifier circuit discussed in this article can provide up to 22 watts per channel into a couple of four-ohm loudspeakers. The main attraction is that you can construct it for less than $15. This implies that you may make a power amplifier for your car’s front speakers, another for the back […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Stereo, TDA1554, Watt

Morse Code Practice Oscillator Circuits

Last Updated on September 22, 2026 by Swagatam 6 Comments

morse code oscillator circuit using IC 4093

In this article we will explore 3 different Morse code practice oscillator circuits, for generating exact replication of Morse code signals in the form of dots and dashes. Contributed By: Anil Patil What is Morse Code Morse code is a legacy method of message encoding that uses rhythm and impulses to transmit telegraphic communication. Morse […]

Filed Under: Oscillator Circuits Tagged With: Circuits, Code, Morse, Oscillator, Practice

How to Calculate Zener Diode Resistor

Last Updated on May 20, 2026 by Swagatam 19 Comments

how to find zener resistor value

In this article I have explained how to calculate and the find the value of the zener diode resistor using simple formulas. What is a Zener Diode Zener diodes are semiconductor devices which are used for regulating an input DC voltage to any desired output voltage. The regulated output voltage value directly depends on the […]

Filed Under: Electronics Theory Tagged With: Calculate, Diode, Resistor, Zener

Simple Buck Converter Circuits using Transistors

Last Updated on August 25, 2023 by Swagatam 101 Comments

buck converter CM DM modes

In this post I have explained some basic facts about DC to DC buck converters and also learn how to build a simple buck converter circuit. A buck converter is also popularly known as a step-down converter, since its basic function is to step down a higher input voltage level to a lower output voltage […]

Filed Under: Power Supply Circuits Tagged With: Buck, Circuits, Converter, Simple, Transistors

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