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 will find this product review 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 or click here to see how to use a multimeter to measure voltage and amperage.
Items you need for this homemade benchtop power supply and ATX power supply hack :
-ATX power supply (You can get one from an old computer or buy a new one. They cost about 30$ US on eBay)
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
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.