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Archive for December, 2012

This is a follow up post to the previous post on how to convert a computer ATX power supply to a shop DC supply. This article describes how to get more voltage combinations and goes into more detail on how to work with the unit.

DC bench supply made from computer ATX power supply

DC bench supply made from computer ATX power supply

When you convert a computer ATX power supply into a DC bench supply it can include up to 5 voltage outputs plus a ground. An ATX PSU (power supply unit) will always have four voltage rails — one each for +3.3 volts, +5 volts, +12 volts and -12 volts and sometimes there will be a fifth rail for -5 volts. (more…)

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This post is the second in a series on how to convert an inexpensive computer ATX power supply unit (ATX PSU) into a useful tool for electronics projects or powering devices. The PSU case in previous article had vent holes on the back panel which put the binding posts in an odd arrangement. The vent holes on the back panel were a little different on this PSU case which allowed the binding posts to be arranged a little differently.

DC bench supply converted from inexpensive ATX power supply

DC bench supply converted from inexpensive ATX power supply

The project can probably be completed in a day or so and requires only a few basic tools like a power drill and a few other hand tools. It would be helpful to have an assortment of heat shrink tubing and a heat gun, plus a hot glue gun, a soldering gun, electrical tape, some solder and a few other electrical tools like wire cutters and a wire stripper. (more…)

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