Introduction: Converting Computer Power Supply to a Lab Bench Using ATX Breakout Board (8$)

Picture of Converting Computer Power Supply to a Lab Bench Using ATX Breakout Board (8$)

Like many of you, I wanted to use a lab bench power supply for my electronics. Unfortunately, they can be very expansive so I wondered if there would be an easier and cheaper way to build one. I came across many great instructables explaining how to modify the power supply from an old PC computer to a benchtop, but they all required skills and tools I don't have. I finally found out that I could simply use a cheap ATX breakout board. This is by far the easiest solution for the conversion of an ATX power supply to a DC lab bench power supply. I wanted to share my experience since there is not much info on this board. I hope you'll find this information useful.

In the video, you can see how to replace the fuses and build a small case for the ATX breakout board.

This board can also be used with LM317 modules to create a variable power supply. Check my LM317 video if you want to learn more about adjustable DC output (youtube) (eBay).


Items you need:

-ATX breakout board (, CA, UK, DE, FR) (Aliexpress)

-Banana plug to alligator clip connectors (eBay) (Aliexpress)

-ATX power supply (You can get one from an old cpu or buy a new one. They cost about 30$ US on eBay)


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Warning and disclaimer:
ATX PSU can deliver enough current to cause serious injuries or death. I am not responsible for any accidents or damages.

Step 1: Build a Case for the Breakout Board

Picture of Build a Case for the Breakout Board

I used a food container for building the breakout board case. It measures 5.75 x 2.5 x 1.5 inches. I removed portions of the lid to get access to the connectors, the fuses and the switch. I packed the bottom of the box with layers of foam for a better fit. The board includes 5A fuses, but you can easily replace them if needed.

Step 2: Plug It and It's Ready to Use!

Picture of Plug It and It's Ready to Use!

You can now enjoy your lab bench power supply! Check the video for more information.


Lima79 (author)2017-01-23

I was just planning to make a bench power supply with a PC SMPS but due
to lack of time i couldn't finish my project, anyways thanks much good
brother for the share.

DIY Electronic (author)Lima792017-01-23

You're very welcome.

DIY Hacks and How Tos (author)2016-10-26

These power supplies are reality useful.

I can't live without it nu(:

russ_hensel (author)2016-10-27

Welcome to the club: Just a note to let you know I have added this instructable to the collection: Encyclopedia of ATX to Bench Power Supply Conversion


Take a look at about 70 different approaches to this project. This topic is one of the more popular of all instructables.

Thank you! I'm amazed by the number of views I already got for my first instructable. This site is so cool and full of great ideas!

About This Instructable



Bio: I really like to experiment and build stuff. I also like to share the things I learned from these various projects. I hope you will ... More »
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