Skip to content
ElecCircuit.com
  • Home
  • Circuits
    • Simple Electronic Circuits
    • Simple electronic projects
    • Amplifiers Circuits
    • Power Supplies
  • Tutorials
    • Electronic Components
    • Learning
  • Categories
    • Audio Circuits
    • Power supply
    • Measurement
    • Basic Electronics
    • Oscillator circuits & RF
    • Controls & Timers
    • Digitals & MCU
  • E-books
  • Contribute
  • ABOUT

:: Home » Power supply

Power supply

LM337 Adjustable Negative Voltage Regulator Circuits

Last Updated on: June 24, 2025 by Apichet Garaipoom
LM337 Adjustable Negative Voltage Regulator

The LM337 is a 3-terminal adjustable negative voltage regulator. It can supply from -1.2V to -37V at 1.5A or more with minimum components. Read more

Categories Power supply Leave a comment

3V to 12V DC Boost Converter Circuit

Last Updated on: July 13, 2025 by Apichet Garaipoom
DC Boost Converter circuit 3-5V to 12V-13.8V

I like the 12V LED. But I have only 3V of batteries. So, No light. When using this circuit, I can get light of the LED at 100 mA. And, an adjustable output voltage.

Read more

Categories Power supply 14 Comments

USB 5V to 12V DC-to-DC Step-Up Converter Circuit

Last Updated on: July 13, 2025 by Apichet Garaipoom
USB 5V to 12V DC-DC Step-Up Converter circuit

This circuit offers a variety of Buck DC to DC converters. Because as circuit increase voltage as the usb 5v to 12v dc-dc step-up converter. This circuit is called Boost converter circuit. Read more

Categories Power supply 7 Comments

Simple 12V Power Supply Circuit

Last Updated on: March 19, 2025 by Apichet Garaipoom
How to Build a Simple 12 volts power supply circuit

This simple 12V power supply circuit has a scalable current of 2A or more. It is an easy-to-make, low-noise, reliable, and durable circuit. Read more

Categories Power supply 2 Comments

4 Buck Converter Circuit | Step-down Converter

Last Updated on: July 13, 2025 by Apichet Garaipoom
4 buck converter circuits and step-down-voltage

Here are 4 examples of a buck converter circuit or step-down converter. There are many ways to make it, such as using transistors or ICs. Read more

Categories Power supply Leave a comment
Older posts
Page1 Page2 Page3 Page4 … Page22 Next →

My E-books

Elec-Circuit-Vol1
Elec-Circuit-Vol2
Elec-Circuit-Vol3
Elec-Circuit-Vol4

About ElecCircuit.com

Electronic Circuits and Mini Projects. We made the ElecCircuit.com, to share our learning experiences on electronics circuits in simple ways.

Categories

  • Power supply 
  • Audio Circuits 
  • Basic Electronics
  • Controls & Timers
  • Digitals & MCU
  • Lightings & LED
  • Measurement 
  • Oscillator circuits & RF
  • Other Projects
  • Past Circuit Designs
  • Green Energy
About | Contact | Privacy policy | SEARCH

Copyright © 2025 · ElecCircuit - All Rights Reserved