Computers & Mobile Technology
HOW TO – Convert a computer ATX power supply to a lab power supply…

Atx-To-Lab-Psu-2Here’s another great how to on converting an ATX power supply to a lab power supply, Abizar writes “Computer power supplies are US$15 but lab power supplies are US$100+. By converting the cheap (free) ATX power supplies that can be found in any discarded computer you can get a phenomenal lab power supply with huge current outputs, short circuit protection, and very tight voltage regulation.” Link. See previous.

10 thoughts on “HOW TO – Convert a computer ATX power supply to a lab power supply…

  1. It will not turn on otherwise (well some atx powers suplies won’t), Alot of switching power supplies need some load on that rail to turn on. We built a few of these before, but we never really needed the loads on that 5 rail to turn them on. Its not a bad idea anyways, since the cheapo circuitry may burnout premeturely if its not loaded correctly… but have fun with your $20 powersupply!

  2. nice to see this version shows/tells how to mix and match the +- 5V and +-12V (and some do it with the +- 3V) for interesting (useful) voltages like 7V and 24V, and 10V.

  3. I wonder if I put a permanent load on the standby +5V of an ATX power supply (purple wire), do I need the 10ohm load resistor? The load is an electronic circuit that I guess will not draw more than 50-100 mA.

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