AC to DC, Ripple frequency ?

Discussion in 'General Electronics Chat' started by akifnadeem, Dec 21, 2011.

  1. akifnadeem

    Thread Starter Member

    Apr 9, 2010
    15
    0
    today my technitian said that when we rectify the AC to DC we get more value of voltage , e.g 24ACV after rectification would give more than 24V , is that true ? and why ?
     
  2. paulktreg

    Distinguished Member

    Jun 2, 2008
    611
    120
    AC measurement is an RMS value so its peak voltage will be approximately 34V and peak to peak, either side of zero will be 68V. When you full wave rectify the AC you are effectively bringing the negative phase of the AC positive so you end up with a positive series of cycles from zero to 34V peak. This is now DC even if it's still a series of positive half cycles of a sine wave. Introduce a smoothing capacitor to give 34VDC. Hop that makes sense?
     
    akifnadeem likes this.
  3. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
Loading...