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Thread: be quiet! Dark Power Pro 10 850 W Power Supply Review @ Hardware Secrets

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    Default be quiet! Dark Power Pro 10 850 W Power Supply Review @ Hardware Secrets


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    Nice review, Gabe, but I have to nitpick about a few things...

    Quote Originally Posted by Article
    In the transient filtering stage, this power supply is flawless, with two Y capacitors more than the minimum required.
    Well, the PSU has a complete integrated EMI filter in a shielded package (minus an MOV) on the input receptacle, and then it has a complete EMI filter including an MOV made of discrete components on the main PCB plus two Y caps. I'd say it's "flawless" and has a whole EMI filter plus 2 Y caps extra.

    Quote Originally Posted by Article
    The output of the active PFC circuit is filtered by two 390 µF x 420 V Japanese electrolytic capacitors, from Chemi-Con, labeled at 105º C and connected in parallel. This is the equivalent of a single 580 µF x 450 V capacitor.
    Actually, it is the equivalent of one 780 µF @ 420V under ideal conditions.

    You didn't mention if the PSU burned in a 4-rail or a single-rail configuration. You also didn't specify which part(s) burned, and how long the PSU lasted while delivering that ~16% overload, before expiring...

    Is this failure to shut down also the reason for the silver award?

    Thanks for the review, and sorry if my barrage of questions and remarks seems aggressive - it's in no way my intention to impugn you or your article, but simply to contribute to it's completeness.
    Careful what you wish for... You just might get it.

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    Gabe the PSU Burner :E Seriously, you seem to have a knack for burning PSUs nobody else does.

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    AC Amperage, the AC voltage dropped too much(unrealistically so) and something in the primary died.. according to BeQuiet! specs, the unit takes up to 10A AC and it died at 1142W @ 104.2VAC (about 11A AC).
    "Sometimes a cigar is just a cigar" - Unknown (but sometimes attributed to Sigmund Freud)

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    Makes sense. If so, dinging this unit for dying outside of specified operating conditions doesn't sound terribly fair.

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    It would be better to hear that the PSU shut down to protect itself from burning under low input voltage.

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    [useless post]
    Last edited by sdbardwick; 07-16-2012 at 04:16 PM. Reason: Didn't add anything to discussion

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    Quote Originally Posted by ssshjp View Post
    It would be better to hear that the PSU shut down to protect itself from burning under low input voltage.
    Under low input voltage and excessive AC amperage..
    I find it pretty irrelevant as these are conditions next to impossible to reproduce at home (104VAC?), I doubt the primary would have to deal with this kind of AC amperage under typical AC voltage, the OCP/OPP would have been triggered by then.
    "Sometimes a cigar is just a cigar" - Unknown (but sometimes attributed to Sigmund Freud)

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    While 105vAC isn't a-typical of a socket in old homes of the U.S.

    There's plenty of places without the wires up to code and some pretty nasty drops on the AC lines.

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    Quote Originally Posted by Original Sin View Post
    Under low input voltage and excessive AC amperage..
    I find it pretty irrelevant as these are conditions next to impossible to reproduce at home (104VAC?), I doubt the primary would have to deal with this kind of AC amperage under typical AC voltage, the OCP/OPP would have been triggered by then.
    I agree that Over Power Protection should work after all under regular 110Vac or higher.


    Since some high-end seasoic units are capable of 40% overload, their OPP/OCP points are kind of high. That's no problem until the input voltage gets down to 100V.
    I'd like to see protection that doesn't allow so heavy overload if low input voltage is detected.
    Last edited by ssshjp; 07-16-2012 at 06:32 PM.

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