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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

3 Basic Capacitor Functioning and Working Explored

Last Updated on January 19, 2025 by Swagatam 21 Comments

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In this article I have explained 3 popular functions of capacitors and how to use capacitors in electronic circuit by analyzing their appropriate working modes depending on the application need of a given circuit stage Introduction Seen those colorful, cylindrical and chocolate shaped parts on a PCB? These may be actually the capacitors of different […]

Filed Under: Electronics Theory Tagged With: Basic, Capacitor, Explored, Functioning, Working

IC 723 Voltage Regulator – Working, Application Circuit

Last Updated on January 14, 2025 by Swagatam 35 Comments

IC723 block diagram

In this post I have explained the main electrical features, pinout specifications, datasheet, and application circuit of the IC 723. The IC 723 is a general purpose, extremely versatile voltage regulator IC, which can be used for making various types of regulated power supplies such as: Main Features ABSOLUTE MAXIMUM RATINGS Pinout Functions Pin 1 […]

Filed Under: Power Supply Circuits Tagged With: 723, Application, Regulator, Voltage, Working

Make this Home Security Project Using Arduino – Tested and Working

Last Updated on December 5, 2024 by Swagatam 2 Comments

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In this article we are going to see how to build a home security system circuit using arduino which might save your home from intruders one day. Housebreaking happens every few seconds in the world. By the time you read this sentence, crooks already broke into someone’s house. A golden rule: Prevention is better than […]

Filed Under: Arduino Projects Tagged With: Arduino, Home, Project, Security, Tested, Working

Simple Faraday Flashlight – Circuit Diagram and Working

Last Updated on November 9, 2024 by Swagatam 14 Comments

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In this article I will show how to construct a Faraday flashlight circuit using only a coil/magnet assembly which requires no battery. It’s not free energy, but it converts oscillatory motion to electricity, which can power the flashlight for a couple of minutes. This flashlight will be useful in emergency situations where no access to […]

Filed Under: Lamps and Lights Tagged With: Faraday, Flashlight, Simple, Working

LM386 Amplifier Circuit [Working and Application Circuits]

Last Updated on January 9, 2024 by Swagatam 75 Comments

national semiconductor 1

The IC LM386 is a 8-pin tiny power amplifier chip, specially made for operating under relatively low voltage parameters, yet provide considerable amplification. IC LM386 amplifier circuit becomes suitable for applying in small low power audio gadgets like in FM radios, door bells, telephones etc. Let’s begin the IC LM386 amplifier explanation by studying its absolute maximum ratings […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Application, Circuits, LM386, Working

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