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LED Driver Power Supply Circuit Using Dimmer Switch

Last Updated on June 1, 2026 by Swagatam 14 Comments

led dimmer circuit diagram

In this post I have explained an effective and efficient high current compact LED Driver power supply using a dimmer switch gadget. In one of my other posts I discussed a high voltage transformerless power supply circuit that used a triac for controlling the capacitive output, however since the concept involved shorting the capacitive output […]

Filed Under: Lamps and Lights, Power Supply Circuits Tagged With: Dimmer, Driver, LED, Power, Supply, Switch

Municipal Water Supply Sensor Controller Circuit

Last Updated on August 1, 2021 by Swagatam 104 Comments

watersensorcircuitutility

In this post I have explained a simple water sensor with pump starter circuit for switching a pump motor during municipal water supply periods. The idea was requested by Mr. Hitesh Thapa. Technical Specifications Is it possible to make a automatic water pump starter which turns On only when the city supply line has water […]

Filed Under: Water Controller Tagged With: Controller, Municipal, Sensor, Supply, Water

0 to 50V, 0 to 10amp Variable Dual Power Supply Circuit

Last Updated on September 8, 2023 by Swagatam 297 Comments

In this post I have explained a simple yet very useful 0 to 50V dual power supply circuit which will enable a full 0 to maximum dual voltage +/- control of the input power supply DC. It also includes a wide range current control feature right from 0 to 10 amps. The idea was requested […]

Filed Under: Power Supply Circuits Tagged With: 10amp, 50V, Dual, Power, Supply, Variable

Driving 3-Phase Motor on Single Phase Supply

Last Updated on May 21, 2026 by Swagatam 33 Comments

3phasemotordriverpwmstage

Driving a three phase motor on a single phase supply directly through ordinary methods can be difficult and dangerous. It requires accurately designed circuits for implementing the operations. Here I have tried to present one such PWM controlled three phase motor driver circuit. I have explained more. The circuit can be understood with the following […]

Filed Under: Grid and 3-Phase, Motor Controller Tagged With: Driving, Motor, Phase, Single, Supply

Simplest One Transistor Regulated Power Supply Circuit

Last Updated on January 2, 2024 by Swagatam 13 Comments

simplestvariablebenchpowersupplycircuit

In this article I have explained a simple variable regulated voltage power supply circuit which utilizes just a single transistor. The design can be very handy for the new electronic hobbyist Main Features The explained power supply includes an adjustable voltage feature which is an essential feature for every electronic enthusiast. However making one such […]

Filed Under: Power Supply Circuits Tagged With: Power, Regulated, Simplest, Supply, Transistor

0-300V Adjustable Transformerless Power Supply Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 269 Comments

ZEROTO220300VVARIABLEPOWERSUPPLYCIRCUIT

This simple MOSFET controlled transformerless power supply circuit can be used for delivering a continuously variable 0 to 300V DC output and a current control from 100 mA to 1 Amp. To protect against my high voltage research projects from going up in smoke permanently, I developed an easy circuit which is able to render […]

Filed Under: Power Supply Circuits Tagged With: 300V, Adjustable, Power, Supply, Transformerless

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