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Newly Updated Circuit Projects:

Electric Wheelchair using BLDC Motor

Last Updated on June 30, 2026 by Swagatam 16 Comments

basic BLDC motor

In this post I have explained how to make a simple electric wheelchair circuit using a standard BLDC motor driver circuit, and a couple of high power BLDC motors. Introduction The introduction of electric wheelchair was like a boon to our many differently-abled friends who now find it much easier to move and travel around, […]

Filed Under: Motor Controller Tagged With: BLDC, Electric, Motor, Wheelchair

High Current Sensorless BLDC Motor Controller using Back EMF

Last Updated on June 30, 2026 by Swagatam 96 Comments

High current sensorless BLDC controller using IC ML4425

In this post I have explained a high current sensorless BLDC motor controller circuit which does not depend on hall effect sensors for initiating the operations rather utilizes the back EMF from the motor for the sequential input Overview For proper commutation most 3-phase BLDC driver circuits rely either on a sensor based feedback or […]

Filed Under: Motor Controller Tagged With: BLDC, Controller, Current, High, Motor, Sensorless

Wireless Servo Motor Control Using 2.4 GHz communication link

Last Updated on August 6, 2026 by Swagatam 29 Comments

Receiver12312 2

In this post I will show how to construct a wireless servo motor circuit which can control 6 servo motors wirelessly on 2.4 GHz communication link.  Introduction The project is divided into two parts: a transmitter with 6 potentiometers and a receiver circuit with 6 servo motors. The remote has 6 potentiometers to control 6 […]

Filed Under: Arduino Projects, Motor Controller Tagged With: communication, Control, Link, Motor, Servo, Wireless

200, 600 LED String Circuit on Mains 220V

Last Updated on June 8, 2026 by Swagatam 43 Comments

string 1

In this post I have explained the construction of a 200 to 600 LED circuit project, using series parallel  LEDs for creating an alphabetical display sign board. The idea was requested by Mr. Mubarak Idris. Circuit Objectives and Requirements I need a blinking LED light that show”WELCOME TO” blink and then “COLLEGE OF ENGINEERING” base […]

Filed Under: Lamps and Lights Tagged With: 200, 220V, 600, LED, Mains, String

Inverter Voltage Drop Issue – How to Solve

Last Updated on December 21, 2021 by Swagatam 116 Comments

sq 1

Whenever PWM is employed in an inverter for enabling a sine wave output, inverter voltage drop becomes a major issue, especially if the parameters are not calculated correctly. In this website you might have come across many sine wave and pure sine wave inverter concepts using PWM feeds or SPWM integrations. Although the concept works […]

Filed Under: Inverter Circuits Tagged With: Drop, Inverter, Issue, Solve, Voltage

Transformerless AC Voltmeter Circuit Using Arduino

Last Updated on June 8, 2026 by Swagatam 13 Comments

simulation2B1 1

In this article I have explained how to make a transformerless AC voltmeter using Arduino. Making an analog voltmeter is not an easy task as to build one you must have good knowledge of physical quantities like torque, speed; which can be very difficult when it comes to their practical applications. By Ankit Negi But […]

Filed Under: Arduino Projects, Meters and Testers Tagged With: AC, Arduino, Transformerless, Voltmeter

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