Bench Atx Power Supply Pinout

The p n for a standard p4 is 39 01 2040 or equivalent. The standard computer power supply unit psu turns the incoming 110v or 220vac alternating current into various dc direct current output voltages suitable for powering the computer s internal components and with a little bit of imagination it is possible to convert atx psu to a bench power supply. Ground black two wires i just plan to remove these from my power supply.

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It should be interesting to both those who want to do a conversion and to those intere.

Bench atx power supply pinout. Encyclopedia of atx to bench power supply conversion. If you re using this pinout table to test power supply voltages be aware that the voltages must be within atx specified tolerances. Atx 24 pin 12v power connector pinout atx v2 2 below is the complete pinout table for the standard atx 24 pin 12v power supply connector as of version 2 2 of the atx specification pdf.

Some psus may have three or four 12 volt 4 pin connectors. Most of today s motherboards supply their cpu with a separate 12 volt cable which has 4 pins for atx style sometimes called p4 or 8 or more pins for eps and non standard high power systems. The atx type power supplies also have other connectors used to power up peripherals such as hard disks and dvd drives.

In addition to the old at standard atx 2 0 has one extra voltage line available 3 3v a connector chain lined to the single 20 pin and a power on wire that allows software to turn off the psu. This guide has almost every atx computer power supply to bench power supply published to date on instructables as of dec 2014 about 70 unique instructables. Atx specification includes not only power supply unit but also interface to case and motherboard.

These connectors have four connections.

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