ATX breakout board bench power supply

If you have any questions on this product please feel free to contact us.

*Disclaimer: The images are merely illustrative.

Recycle an ATX computer power supply into a beefy bench tool that powers your projects. The ATX breakout board routes the -12, 3.3, 5 and 12 volt ATX outputs to screw terminals, each protected by a 1.25 amp resettable polyfuse. These four voltages cover many common electronics needs, there's even a negative voltage (-12 volts) for op amps and audio projects.

An on/off button and a control circuit are included on-board, no modifications to the ATX supply are needed.

FEATURES

• • -12, 3.3, 5, 12 volt supplies @ 1.25 amp
• • 1.25 amp polyfuses with reset on each power rail
• • Indicator LEDs show that each rail is working
• • Power good and enabled indicator LEDs
• • On-Off button and control circuit
• • Optional load resistor included but NOT soldered
• • Open source (CC BY-SA)

Note: A 9 Watt load resistor is included but not soldered to the board. In our experience most modern ATX supplies don't require a significant load on the 5 volt rail to start. An artificial load just wastes electricity and creates unnecessary heat. Please let us know your experience.

Some special ATX supplies provide -5volts, but the vast majority don't. We broke it out and added the fuse, but didn't populate the screw terminal.

RESOURCES

• • Documentation
• • Design overview
• • Discussion forum