calculating dc from transformer

Discussion in 'General Electronics Chat' started by lokeycmos, Sep 2, 2011.

  1. lokeycmos

    Thread Starter Active Member

    Apr 3, 2009
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    is there a formula to calculate DC output of a transformers AC out after full rectifying and cap smoothing?
     
  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
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  3. lokeycmos

    Thread Starter Active Member

    Apr 3, 2009
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    7
    awesome!! thank you!! what role does the choke play in the
    "FULLWAVE BRIDGE Choke Input Load" example?
     
  4. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    I'd think it helps decreasing ripple current on the output capacitor.
     
  5. #12

    Expert

    Nov 30, 2010
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    The "optimum" choke is calculated to have continuous current through it. If I remember correctly, it decreases the output voltage by 10%. It isn't as simple as calculating an RC circuit. I have never actually used that setup. That's why I can't remember the numbers. Nobody does it that way now because capacitors are so much cheaper than inductors and they don't "cost" any voltage.
     
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