(Topic ID: 299610)

Question about increasing capacitance on PS

By Tomass

49 days ago


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  • Latest reply 49 days ago by Tomass
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    #3 49 days ago

    18000uF is pretty big for these power supplies ... let alone 20000 and 25000.
    There is a point of diminishing returns on cap sizes plus when you start getting too big then you run the risk of burning up diodes within rectification circuit due to ripple current.

    I would go with whatever the original design called for and stop there.

    #9 49 days ago

    18000 axials for all and be done with it.
    Pay close attention to the little buggers near heat sink. Leaked electrolyte can cause lots of headaches.
    Data_East_Cap (resized).jpg

    Note that Data East calls out a 0.18F cap for the Simpsons board. OK...off by a factor of 10 on the actual drawing but they were sized at 18000uF.

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