Simple Adjustable DC Power Supply

This project is a variation on those using linear voltage regulator chips to power low-voltage experiments wherein it uses a low dropout regulator to allow lower input voltages and a fine adjustment system.

High Voltage Switch Mode Power Supply for Nixie Tubes

The small-circuit project illustrates a switch mode power supply (SMPS) that boosts low voltage to the high voltage require to drive nixie tubes while being operated on batteries or low voltage wall-warts.

Automobile Power Supply with 12V Output

The project aims to build a power supply unit for cars and other automobiles that requires an actual voltage of 12V from the range of 9V to 16V.

Basic Adjustable Power Supply Based on LM317

The LM317 adjustable voltage regulator is used in this project to produce a power supply that can be used for testing and debugging purposes.

DC Power Supply Based on Microcontroller

This project aims to build a DC power supply that will be controlled by a microcontroller and features an LCD display and the use of Linux computer to send commands via RS232 interface.

Mini 5V Power Supply Unit Built in Breadboard

The goal of the project is to create a micro PSU to provide power on a breadboard with 5 Volts supply as the whole circuit can be connected to 9V battery, 12V or any other DC power source from 8 to 18V.