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New Circuit Projects

Wireless Li-Ion Battery Charger Circuit

Last Updated on January 8, 2024 by Swagatam 61 Comments

Inductive charging 1

Charging batteries through inductive wireless charging is one of the applications that’s becoming very popular and getting appreciated by the uses. Here we’ll study how to make a wireless Li-Ion battery charger circuit using the same concept. Any electrical system which involves wire networks or cables can be very messy and cumbersome. Introduction Today the […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Wireless

How to Make an Outstanding Home Theater System

Last Updated on May 30, 2019 by Swagatam 101 Comments

home theater1 1

The article discussed here provides a simple, cheap home theater system circuit that may be built at home and used for the desired purpose. Introduction The results from this circuit design are outstandingly rich and have the capabilities comparable with the costly hi-end types available in the market. Home theater systems are quite common nowadays […]

Filed Under: Audio and Amplifier Projects Tagged With: Home, Outstanding, System, Theater

Potato Battery Circuit – Electricity from Vegetables and Fruits

Last Updated on November 17, 2024 by Swagatam 3 Comments

potatobattery

In this article I have explained how vegetables can be used for making an organic battery, through an example of a practical potato battery experiment. Alessandro Volta was probably the first man to devise the method and idea of generating electricity from electrolytic solutions. According to his concept, two dissimilar metals when brought in contact […]

Filed Under: Solar Controller Circuits Tagged With: Battery, Electricity, Fruits, Potato, Vegetables

Variable Voltage, Current Power Supply Circuit Using Transistor 2N3055

Last Updated on May 13, 2022 by Swagatam 318 Comments

Power Supply 1

In this post I have explained how to make a simple variable power supply circuit using transistor 2N3055 and some other passive components. It includes variable voltage and variable current feature, fully adjustable. Main Specifications 1) Adjustable from 0-30V, 0-60V, and 0-100V, and 500mA to 10 Amp as per user preference 2) Short Circuit Protected […]

Filed Under: Power Supply Circuits Tagged With: Current, Power, Supply, Transistor, Variable, Voltage

4 Automatic Day Night Switch Circuits Explained

Last Updated on October 20, 2022 by Swagatam 104 Comments

automatic20street20light20system

The 4 simple light activated day night switch circuits explained here can all be used for controlling a load, normally a 220V lamp, in response to the varying levels of the surrounding ambient light. The circuit can be used as a commercial automatic street light control system, as a domestic porch light or corridor light […]

Filed Under: Sensors and Detectors Tagged With: Automatic, Circuits, Explained, Night, Switch

Hi-Fi 100 Watt Amplifier Circuit Using 2N3055 Transistors – Mini Crescendo

Last Updated on December 22, 2023 by Swagatam 205 Comments

powe supply

Video Demonstration of the Crescendo Amplifier The mini crescendo 100 watt transistorized amplifier circuit explained here was built and tested by me and am extremely pleased by its performance and also its ruggedness as far as maintenance and handling is concerned. Amplifier Class Basically, the entire configuration is a symmetrical class A amplifier incorporating an […]

Filed Under: Audio and Amplifier Projects Tagged With: 100, 2N3055, Amplifier, Mini, Transistors, Watt

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