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Power supply caps

  1. Oct 10, 2005 #1
    why do power supplies like computer power supplies have high voltage caps?
  2. jcsd
  3. Oct 10, 2005 #2
    Today's computers use switching power supplies which take a house hold voltage and convert it to high frequency voltage which is then down converted to a lower voltage. But during this process, high voltage may be induced in the high frequency transformer, hence you need high voltage caps.
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