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Newly Updated Circuit Projects:

500 Watt Inverter Circuit with Battery Charger

Last Updated on August 3, 2020 by Swagatam 391 Comments

500 watt

In this post we will comprehensively discuss how to build a 500 watt inverter circuit with an integrated automatic battery charger stage. Further in the article we will also learn how to upgrade the system for higher loads and how to enhance ot into a pure sine wave version. This 500 watt power inverter will […]

Filed Under: Inverter Circuits Tagged With: 500, Battery, Charger, Inverter, Watt

3 Terminal Fixed Voltage Regulators – Working and Application Circuits

Last Updated on January 2, 2024 by Swagatam 13 Comments

regulator 78XX

The popular 3 terminal fixed regulators available today are in the form of IC 7805, IC 7809, IC 7812, IC 7815, and IC 7824, which correspond to fixed voltage outputs of 5 V, 9 V, 12 V, 15V, and 24 V. These are called fixed voltage regulators since these ICs are able to produce excellent […]

Filed Under: Power Supply Circuits Tagged With: Application, Fixed, Regulators, Terminal, Voltage, 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

Voltage Regulator Circuits and Projects

Last Updated on January 2, 2024 by Swagatam 30 Comments

zener stabilzed power supply

In this article I will comprehensively discuss how to make customized transistorized voltage regulator circuits in fixed modes and also variable modes. All linear power supply circuits which are designed to produce a stabilized, constant voltage and current output fundamentally incorporate transistor and zener diode stages for getting the required regulated outputs. These circuit projects […]

Filed Under: Power Supply Circuits Tagged With: Circuits, Projects, Regulator, Voltage

Ultrasonic Pest Repellent Circuit

Last Updated on September 25, 2026 by Swagatam 81 Comments

ultrasonic pest repeller

The explained Ultrasonic Pest repeller is a device that generates ultrasound or a very high frequency noise in the range of over 20 kHz which becomes useful for repelling or scaring away animals like stray dogs, cats, mice bats, etc. This becomes possible since these animals are able to easily detect the frequencies at this […]

Filed Under: Pets and Pests Tagged With: Pest, Repellent, Ultrasonic

Easy Two Transistor Circuit Projects for School Students

Last Updated on June 23, 2026 by Swagatam 18 Comments

NPN astable

A variety of small school projects can be built using just two transistors. This compilation includes a collection of practical and fascinating circuit ideas using just a few number of parts. Any small signal transistor can be used in the proposed two transistor circuit, such as BC547, 2N2222, 2N2907, BC108, BC107, TIP32, TIP31, 188, 8050, […]

Filed Under: Mini Projects Tagged With: Easy, Projects, School, Students, Transistor

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