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Thread: Mean Well PSUs and ripple on those

  1. #1
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    Default Mean Well PSUs and ripple on those

    Hi there.
    Because of some space constrains (the height of the standard PSU ATX is too big for a scratch build) I'm looking for some alternatives regarding power supplies.

    And I came along Mean Well, and they have some nice PSU, in different form factor sizes, and in diferent voltages and power.

    Anyway, to cut things easy, I've selected 2 PSUs:

    Mean Well SP-480-12
    Mean Well USP-500-12

    The first one's ripple seems to be ok with the ripple specified in the ATX specs, it is 120mVp-p.
    The second one (USP-500) has a 100mVp-p specified.

    I would like to know if those two industrial PSUs are ok for using in a computer with computer components. Can those 2 PSU be used for powering some video cards?

    P.S. I understand perfectly that those Mean Well outputs like 12V and no 3.3V and 5V. For this job I'm going to use an additional PicoPSU.

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    The ripple they're stating as spec are just that... spec. That's all most companies specify. Who knows the actual ripple without testing it.

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    There is one more thing.
    Mean Well pretends that a third party like some dude or a lab where this dude works actually tested the PSU and they post a report for some of their PSUs:

    For example, there is a report for the USP-500 right here:

    http://www.meanwell.com/search/usp-5...500-12-rpt.pdf

    The report looks even more promising, instead of the spec 100mVp-p they said it is only 18mVp-p.

    P.S. Can anyone give me a link with specs for some ok-ish ATX PSUs where the manufacturer specify their ripple just like Mean Well did?

    Later edit: not very clear to me, maybe this 3rd party might not be just a 3rd party, it could be just Mean Well itself.
    Last edited by Arise; 11-22-2011 at 03:37 PM. Reason: later edit:

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    I don't see any claim that a third part is producing these test results.

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