Atx power supply


This topic contains 3 replies, has 4 voices, and was last updated by Profile photo of Wesley Gardner Wesley Gardner 3 months ago.

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    Profile photo of Martin Brandon
    Martin Brandon

    Are you able to use an atx power supply to power an mpcnc as a 3dp?

    Profile photo of Ryan

    Usually it works, I have had some brown out on me though.

    Profile photo of Al Quentin
    Al Quentin

    Some ATX power supplies don’t regulate the 12V rail well (or at all) if there isn’t a minimum load on the 5V rail. Industrial multi-output supplies specify any required minimum load in their datasheets, but I’ve never seen it mentioned in the “data sheets” supplied with consumer ATX supplies. Depends on the particular ATX supply, but in my experience a 1/2 to 1 amp load is sufficient. I use an appropriately sized power resistor, mounted inside the supply, for the load.

    – Al

    Profile photo of Wesley Gardner
    Wesley Gardner

    server power supplies are my go to for projects ones with fans cheap and works great.

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