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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

SMPS 2 x 50V 350W Circuit for Audio Power Amplifiers

Last Updated on May 15, 2026 by Swagatam 285 Comments

smps2B3002Bwatt2Baudio2Bamp2Bpower2Bsupply2Bcircuit

This article will illustrate a simple procedure to devise an unregulated 50V switching SMPS symmetric power supply of 350W. This unit can be substituted with the standard audio amplifier power supply to reduce expense and also the weight. The proposed power supply works as a half-bridge with no regulation. Written and Submitted by: Dhrubajyoti Biswas […]

Filed Under: Audio and Amplifier Projects, Power Supply Circuits Tagged With: 350W, 50V, Amplifiers, Audio, Power, SMPS

How to Build an Ozone Water/Air Sterilizer Circuit – Disinfecting Water with Ozone Power

Last Updated on May 28, 2026 by Swagatam 49 Comments

We are all familiar with thundering and lightning during stormy weathers and know how the effect is responsible of producing a lot of ozone and negative ions in the atmosphere. The same concept has been employed in the proposed water and air sterilizer circuit. Properties of Ozone Ozone is a pale blue gas having a […]

Filed Under: Home Electrical Circuits Tagged With: Build, Disinfecting, Ozone, Power, Sterilizer, Water

Low Power MOSFET 200mA, 60 Volts Datasheet

Last Updated on May 17, 2026 by Swagatam Leave a Comment

smallsignalmosfetpinout

In this post I have explained the main specs and pinouts of a small signal, low power N-channel mosfet 2N7000G. Mosfets vs BJTs When we talk of mosfets we normally associate it with high current, high voltage, and with high power applications. However, just like ordinary BJTs, small signal mosftes are also available which may […]

Filed Under: Datasheets and Components Tagged With: 200mA, Datasheet, MOSFET, Power, Volts

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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