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Newly Updated Circuit Projects:

Power Factor Correction (PFC) Circuit – Tutorial

Last Updated on December 10, 2025 by Swagatam 19 Comments

passive 2

In this post I have explained the different methods of configuring a power factor correction circuit or a PFC circuit in SMPS designs, and explains the best practice options for these topologies so that it complies with the modern PFC restriction guidelines. Designing efficient power supply circuits have never been easy, however in the course […]

Filed Under: Voltage Control and Protection Tagged With: Correction, Factor, PFC, Power, Tutorial

How to Select the Right Charger for Li-Ion Battery

Last Updated on May 17, 2026 by Swagatam 3 Comments

licharger

In this discussion we try to learn the right procedure for selecting a charger for a Li-ion battery. The question was raised by Mr. Akshay. Li-Ion Charger Related Question I have a 5000mAh Li-ion battery. Can i select a charger for my Li-ion battery having the following specifications, the product is available on ebay? I […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Right, Select

Automatic Voltage Regulator (AVR) Circuit

Last Updated on January 2, 2024 by Swagatam 9 Comments

Winding

An automatic voltage regulator circuit is quite well used where Voltage supply is only 120VAC. Many gadgets can operate good at 220V Ac that is why Voltage regulation is needed. By: Mehran Manzoor For this matter an appropriate voltage Regulator circuit is designed which can operate up to capacity of 1KW and gives Variable voltage […]

Filed Under: Voltage Control and Protection Tagged With: Automatic, AVR, Regulator, Voltage

2 Simple Light to Frequency Converter Circuits for Transforming Light into Pulses

Last Updated on January 19, 2025 by Swagatam 9 Comments

In this article we are going to see what is a light to frequency converter circuit, how it works, how to use it in a project, and its specifications. No matter which category you belong to, professional, hobbyist, engineer or student, modular components always reduce half of our headache while designing circuits. They eliminate the […]

Filed Under: Sensors and Detectors Tagged With: Circuits, Converter, Frequency, Light, Simple, Transforming

How an Accelerometer Works

Last Updated on May 20, 2026 by Swagatam 8 Comments

part2

In this post I will try to explain how an accelerometer works and also learn the specifications of a popular accelerometer ADXL335 in detail. If you are a tech enthusiast you would have came across the term called “Accelerometer”. This piece of technology made our smart phones really smart, many common home appliances, automobile, robotics, […]

Filed Under: Electronics Theory Tagged With: Accelerometer, Works

Obstacle Avoiding Robot Circuit without Microcontroller

Last Updated on June 21, 2020 by Swagatam 48 Comments

setup

In this post I have explained a simple obstacle avoiding robot circuit without microcontroller and without using special motor driver circuits or ICs. The idea was requested by Mr. Faiyyaz The Design Basically it’s in the form of a moving vehicle which is able to detect and avoid potential obstacles on its path and change […]

Filed Under: Sensors and Detectors Tagged With: Avoiding, Microcontroller, Obstacle, Robot, without

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