Formulas describing Filter Capacitors in Rectifier Circuit

Discussion in 'Homework Help' started by ModoExpress, Nov 1, 2009.

  1. ModoExpress

    Thread Starter New Member

    Nov 1, 2009
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    Hey, I'm doing a pre-lab for a 2nd year eece course and I can't find the appropriate formulas needed to calculate the filtor capacitor for certain rectifier circuits: half wave rectifier, full wave rectifier using a center tap transformer, and full wave rectifier using a bridge circuit.

    Any help or online resources would be great!

    thanks in advance.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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  3. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    hmm, only equation you need is
    C = Q/V = ( I*t)/V
    where
    I - load current
    t - discharge time 1/50Hz (20ms) for half wave rectifier and 1/100Hz (10ms) full wave rectifier or 1/60Hz and 1/120Hz for countries with 60Hz mains.
    V - capacitor ripple voltage
     
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