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Smoothing effect of full wave rectification

  1. Aug 8, 2011 #1
    1. The problem statement, all variables and given/known data

    I have this question regarding to the smoothing effect of full wave rectification. In order to smooth out the wave. A capacitor is added across a resistor which is connect across a diode bridge. In order to increase the smoothing effect 2nd capacitor can be added across the resistor. So it means that are two parallel capacitor connected across the resistor. My question is instead of adding the 2nd capacitor to the resistor. How if i increase the resistance of the resistor (connected parallel with the 1st capacitor only)? would this also increase the smoothing effect as similar as two capacitor in parallel connected across a resistor?

    Any one can help me? I can't find the answer to this question!!

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Aug 12, 2011 #2


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    Staff: Mentor

    As you describe it the resistor is acting as the load on the rectifier setup. When the rectifier input voltage drops below the current voltage held on the capacitor, where is the load drawing its current from? What happens to the voltage on the capacitor? What if you change the amount of current being drawn by the load (by changing the load resistance)?
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