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Adjustable DC Power Supply Kit

Adjustable DC Power Supply Kit

by Galak Electronics
Part No. VG-103B
Shipping Weight: 0.6 ounces (18 grams)

Dial in just the right voltage for all you electronic projects with this high powered Adjustable DC Power Supply. Includes input and output short circuit protection as well as built in over temperature and over current shutdown. Wide input range allows for voltage regulation of 24VAC and 30VDC supplies*. Newly improved with a standard 2.1mm DC jack and terminal header output connector for easy hookup.

The unassembled kit includes instructions (including schematic and parts placement) and all the components to build one complete Adjustable DC Power Supply. A soldering iron, solder and a pair of cutters are required for assembly.

Adjustable DC Power Supply Kit:



Adjustable DC Power Supply Kit
(Built and Tested):




  • User selectable voltage from 1.25 to 15VDC at 1A with no additional heatsinking*.
  • Operates with both AC or DC voltage with fully rectified input.        
  • Takes standard DC coaxial plug for use with DC adapters.
  • Input and output short circuit protection diodes.
  • Wide input supply voltage from 4.5 to 30VDC or 3 to 24VAC.
  • Green LED to indicate when output is active.
      * Maximum voltage differential from input to output should be less than 15VDC for full current.


  • Supply Voltage: 4.5VDC to 30VDC / 3VAC to 24VAC
  • Output Rating: 1.25-15VDC @ 1A (Up to 1.5A with additional heatsinking)
  • Input Connector: Onboard solder pads (2 places) and 2.1mm coaxial jack
  • Output Connector 16-26AWG, 2 position screw terminals
  • Board Dimensions: 1.95" x 1.88" (5.0 cm x 4.8 cm)
  • Board Material: 0.062" (1.6 mm) FR-4, with green solder mask and top layer silk screen
  • Finished Weight: 0.6 ounces (18 grams)

Please feel free to contact us if you have any question about this project or any othe Galak Electronics Projects.

Copyright 2013 by Galak Electronics. All rights reserved.