a question of filtering

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brady2004

  • Jr. Member
  • Posts: 14
a question of filtering
« on: 3 Dec 2004, 05:07 am »
Sirs :

I am planning an outboard PS for a DAC.   Question :  what capacitor values would filter out specific "noise" in (1) the AC line prior to the primary;  (2) after the primary but before rectification and (3) after rectification but before inductor.    The PSUs I've seen sport 0.005 up to 0.22 capacitors.   Is there some kind of a table to this (ie. capacitor value = frequency taken out)

Thanks a jillion.