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Newly Updated Circuit Projects:

Simplest Full Bridge Inverter Circuit

Last Updated on March 20, 2025 by Swagatam 386 Comments

Among the different existing inverter topologies, the full bridge or the H-bridge inverter topology is considered to be the most efficient and effective. Configuring a full bridge topology could involve too many criticality, however with the advent of full bridge driver ICs these have now become one of the simplest inverters one can build. What’s […]

Filed Under: Inverter Circuits Tagged With: Bridge, Full, Inverter, Simplest

Random LED Number Generator for Gambling Application

Last Updated on March 15, 2025 by Swagatam 6 Comments

random LED generator circuit

In this post I have explained a random LED number generator circuit consisting of a 4 x 5 LED matrix, numbered from 1 to 20. On pressing a push button these LEDs begin illuminating randomly, until finally a single LED corresponding to a specific number remains illuminated. Thus, this random LED number generator can be […]

Filed Under: Games and Sports Projects Tagged With: Application, Gambling, Generator, LED, Number, Random

Optocoupler Circuits, Working, Characteristics, Interfacing

Last Updated on March 15, 2025 by Swagatam 51 Comments

opto coupler internal view

OPTOCOUPLERS OR OPTOISOLATORS are devices that enable efficient transmission of DC signal and other data across two circuit stages, and also simultaneously maintain an excellent level of electrical isolation between them. Optocouplers become specifically useful where an electrical signal is required to be sent across two circuit stages, but with an extreme degree of electrical […]

Filed Under: Electronics Theory Tagged With: Characteristics, Circuits, Interfacing, Optocoupler, Working

Explained: MAX4466 Electret Microphone Amplifier Module with Adjustable Gain

Last Updated on March 14, 2025 by Swagatam Leave a Comment

In this post we will be talking about this MAX4466 microphone amplifier module, right? So this is a tiny little circuit that can amplify weak sound signals from an electret condenser microphone (ECM). That means it is going to take a very small electrical signal from the microphone and then boost it up so we […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Electret, Explained, MAX4466, Microphone, Module

High Current Voltage Doubler Circuit

Last Updated on March 12, 2025 by Swagatam 18 Comments

highcurrentvoltagedoublercircuit

In this post I have explained a voltage high current doubler circuit which will almost double the voltage that’s been applied at the input (up to 15V max), and also it becomes specifically useful since it allows higher current loads to be used at the output, in the order 10 amps. Since the voltage doubler […]

Filed Under: Electronics Theory Tagged With: Current, Doubler, High, Voltage

Make this Simple Buzzer Circuit with Transistor and Piezo

Last Updated on March 9, 2025 by Swagatam 87 Comments

In this article I have explained how to make a very simple circuit for buzzer using piezo electric transducer, two resistors, a small coil and a BC547 transistor. A buzzer is a high frequency oscillator circuit used for generating a buzzing sound through a transducer or speaker output. Simple Buzzer using a Single Transistor Just […]

Filed Under: Audio and Amplifier Projects Tagged With: Buzzer, Piezo, Simple, Transistor

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