Converting a PC power supply works, but often, it involves splicing wires and limits the supply to only bench use, and building one from scratch is definitely an undertaking.

You could, of course, purchase a purpose-built bench power supply. But, this is Hackaday, and I’m sure many of you would rather build one yourself from an inexpensive PC power supply.

Salvaged an old SMPS (switching mode power supply) from a CPU to create a lab bench power supply. Added a variable voltage output using an LM317 voltage regulator. Additionally, integrated a display ...