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Thread: Power Supply Basics by crmaris @ TPU

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    Default Power Supply Basics by crmaris @ TPU

    It's been a hard day's night and I've been working like a dog.

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    Nice article.

    But shame for stealing the topology section from Wikipedia. :P
    It's my PSU in a box!
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    When you give references is not a steal, otherwise we wouldn't use other resources in papers. Also is not from wikipedia but from one of the books that I read in order to write this article.

    "several switching regulator topologies (Marty Brown: Power Supply Cookbook)"

    In addition I added two (the resonant ones) that didn't exist in the aforementioned book.

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    Huh, then whoever wrote that section of the Wikipedia article may have copied him. The charts are very similar.

    Marty Brown is in the Wikipedia source list.
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    On the other hand passive PFC has higher efficiency compared to active PFC!
    You mean only the PFC stage, right? Because if we change this to "PSU with passive PFC" vs "PSU with active PFC", reverse will be usually true, as most ATX PPFC PSUs are obsolete half bridge crapola/units good back in the day, meh now.

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    yeap only the PFC stage.

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    I know non-PFC has more efficient PFC stages (Duh.. as there is no PFC stage at all), but I didn't think passive was more efficient than active.

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    It is argued, sometimes heatedly, on some forums. Meaingless ditinction, at least for me.

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    Where I live, if you're using industrial power (meaning your current requirements exceed 25A continuous), you're charged for apparent power (VA). In this case, high power factor is imperative, even if it means sacrificing some efficiency.
    Careful what you wish for... You just might get it.

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    Thanks for the nice article crmaris, it's cool to have another good ATX design resource vs HE

    Quote Originally Posted by walterm View Post
    It is argued, sometimes heatedly, on some forums. Meaingless ditinction, at least for me.
    Ah yes, very heatedly I'd say
    The fun starts a bit in...

    http://www.badcaps.net/forum/showthread.php?t=10339
    "The one who says it cannot be done should never interrupt the one who is doing it."

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