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Thread: Sloppy designs

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    Default Sloppy designs

    Spent yesterday upgrading capacitors on some power supplies (for fun), but found a terribly sloppy design.

    On an HP supply: a power transistor compressed between a capacitor and an inductor coil; an inductor
    mounted on long legs above two tall capacitors.

    Didn't expect such shoddy work from HP
    Last edited by ashiekh; 06-01-2020 at 06:23 PM.

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    Quote Originally Posted by ashiekh View Post
    Spent yesterday upgrading capacitors on some power supplies (for fun), but found a terribly sloppy design.

    On an HP supply: a power transistor compressed between a capacitor and an indictor coil; an inductor
    mounted on long legs above two tall capacitors.

    Didn't expect such shoddy work from HP
    I wouldn't expect it either since HP doesn't make anything.

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    Quote Originally Posted by Jon Gerow View Post
    I wouldn't expect it either since HP doesn't make anything.

    Make is one thing, design is another.

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    They do neither.

    Who made the PSU?

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    The power supply says HP on the outside; which does not tell us a lot.

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    UL number?

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    Quote Originally Posted by ashiekh View Post
    The power supply says HP on the outside; which does not tell us a lot.
    Must be pretty old. Recent certification requirements require factory name.

    What's the model # of the PSU?

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    Label attached
    Attached Images Attached Images

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    E131875 is Acbel.

  10. The Following User Says Thank You to -The_Mask- For This Useful Post:

    ashiekh (06-01-2020)

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    Quote Originally Posted by ashiekh View Post
    Label attached
    Yeah. About 2007-ish.

    So now that we got that mystery out of the way.... what makes it sloppy?

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