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    ATX PSU has 5.2v output, is it safe to use?

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    Duet Hardware and wiring
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    • sesopenkoundefined
      sesopenko
      last edited by

      I am wiring up an atx power supply to a duetwifi. When the ps has its von shorted it's outputting 12v perfectly but the 5v is outputting 5.2v. I'd like to let the duet control the von of the power supply but I feel the 5.2v output is unsafe. It's a name brand, 700w thermal take psu so I'm surprised it's not regulating the 5v properly. Could it be because the 5v sense wire from the PSU isn't connected to anything?

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      • Jbournsundefined
        Jbourns
        last edited by

        5.2 volts should be well within spec of the board, but david should know more on that than I do.

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        • dc42undefined
          dc42 administrators
          last edited by

          5.2V is within spec, however there is a risk that the ATX PSU will detect over voltage on the 5V output and shut down. When using an ATX PSU to power a 3D printer you should put a dummy load on the 5V output.

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

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