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New Circuit Projects

Make an Electronic Candle at Home Circuit

Last Updated on December 1, 2023 by Swagatam 23 Comments

candle 1

The proposed electronic candle circuit  does not use wax, paraffin or flame, yet the device perfectly simulates a conventional candle. Basically it incorporates ordinary electronic parts like LED and battery. The interesting part of it is that it can be extinguished with literally a puff of air. The proposed electronic LED candle circuit helps you […]

Filed Under: Mini Projects Tagged With: Candle, Electronic, Home

How to Illuminate 100 LEDs from 6 Volt Battery

Last Updated on November 8, 2023 by Swagatam 21 Comments

100led 2

In this article I have explained an innovative way of driving more than a hundred white LEDs from a 6 volt battery. The circuit utilizes the IC 555 for driving a step up transformer, whose output is finally used for illuminating the LEDs. A special PWM configuration makes the circuit much power efficient. Main Stages […]

Filed Under: Lamps and Lights Tagged With: 100, Battery, Illuminate, LEDs, Volt

230 Volts Bulb String Light Circuit for Diwali and Christmas

Last Updated on January 19, 2025 by Swagatam 33 Comments

diwali 2

In this article I have explained how to wire tiny 12 volt flashlight bulbs into decorative string light for decorating houses during festivals like Diwali and Christmas. What are String Lights As the name suggests a string light is a wired lamp system in which many lamps such as bulbs or LEDs are joined together […]

Filed Under: Mini Projects Tagged With: 230, Bulb, Diwali, Light, String, Volts

100 Watt LED Constant Current Driver Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 190 Comments

100wattleddrivercircuit

You might have probably come across these fantastic high power, high efficiency LED modules and wondered how do you make these? Here I have explained how to make a 100 watt LED flashlight out of it? Introduction The article revises the datasheet of this LED module and explains a simple driver circuit which can be […]

Filed Under: Lamps and Lights Tagged With: 100, Constant, Current, Driver, LED, Watt

Making a Pyrometer Circuit

Last Updated on November 8, 2023 by Swagatam 6 Comments

Pyro1 2

To make a furnace temperature meter, the sensing element is required to be particularly robust so that it is able to withstand the extreme high temperatures generally developed in furnaces and ovens. What is a Furnace The circuit of a pyrometer explained here is based on a thermocouple principle which can be used to read […]

Filed Under: Temperature Controllers Tagged With: Making, Pyrometer

RTD Temperature Meter Circuit

Last Updated on January 8, 2024 by Swagatam 2 Comments

rtd 2

In this post I have explained the making of an RTD temperature meter circuit, and also learn about different RTDs and their working principles through formulas. What’s an RTD A RTD or resistance temperature detector works by detecting the difference or an increase in the resistance of the sensor metal when it’s subjected to heat. […]

Filed Under: Meters and Testers Tagged With: Meter, RTD, Temperature

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