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DIY 0–300V DC Variable Power Supply – Transformerless Design

Last Updated on May 14, 2025 by Admin 4 Comments

Mosfet regulator 300v circuit

We Made This Simple Transformerless Power Supply with MOSFET, That Gives 0 to 300V DC and Adjustable Current, But Careful… It is Super Dangerous to touch in uncovered condition…. So […]

Filed Under: Power supply Tagged With: 300V, DC, DIY, Power, Supply, Variable

Variable Tone Generator Circuit using Magnet

Last Updated on December 21, 2020 by Admin 1 Comment

magnet oscillator compressed

Wondering how to build a tone generator circuit whose frequency could be changed or adjusted simply by moving a magnet near its sensor coil? This article will explain exactly how […]

Filed Under: Oscillators Tagged With: Generator, Magnet, Tone, Variable

High End Bench Power Supply with Variable Voltage/Current

Last Updated on September 11, 2020 by Admin Leave a Comment

hi end power supply circuit

The post explains a schematic design of a versatile, Hi-End work bench power supply whose output voltage and output current can be independently adjusted very finely, with high accuracy and […]

Filed Under: Power supply Tagged With: Bench, End, High, Power, Supply, Variable

Variable Notch Filter Circuit

Last Updated on June 6, 2025 by Admin Leave a Comment

fig1 40

This variable notch filter circuit for enabling an adjustable audio frequency cancellation as desired by a specific application. A Notch Filter can also be named as Band Stop filter or […]

Filed Under: Audio and Amplifier Tagged With: Filter, Notch, Variable

Variable Windscreen Wiper Delay Circuit

Last Updated on March 19, 2021 by Admin 2 Comments

variable auto windscree wiper for cars

Practically in most windscreen wiper delay circuits the wiper speed is self-governing of the speed of the vehicle. However the quicker the vehicle travels, the more rain falls on the […]

Filed Under: Car and Motorcycle Projects Tagged With: Delay, Variable, Windscreen, Wiper

1.25 V to 30 V Variable Power Supply Circuit using IC LM350

Last Updated on April 8, 2020 by Admin Leave a Comment

LM350 power supply circuit

The variable voltage current power supply might look very small and compact physically, but it has the supply capacity of up to 3 A at 1.25-25 V output voltage. However, […]

Filed Under: Power supply Tagged With: LM350, Power, Supply, Variable

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