Filter capacitance and ripples

Discussion in 'Homework Help' started by shaheed, Feb 3, 2011.

  1. shaheed

    Thread Starter New Member

    Feb 3, 2011
    4
    0
    Q1:if i decrease the filter capacitance the ripple will decrease oir increase?

    Q2:with the same secondary voltage and filter , which has the least ripple

    a)HW rectifier b)FW rectifier c)Bridge rectifier ?


    Q3:At very high frequency, small signal diodes dont work properly bcz of

    a.Forwrd bias b.reverse bias c.break down d.charge storage


    Q4: if the line frequency is 60 hertz,the out put frequency of bridge rectifier is ?
     
    Last edited by a moderator: Feb 3, 2011
  2. Adjuster

    Well-Known Member

    Dec 26, 2010
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    Q1: What does a filter capacitor do? Think about what happens if the capacitor value is reduced to zero.

    Q2: How many ripple peaks happen during each AC cycle for each circuit? The longer between peaks, the more ripple.

    Q3: To rectify high frequencies, a diode is required to switch from conduction to blocking in a short period of time.

    What might take time to leave the junction at the end of the conduction phase?

    Q4: How many ripple peaks happen during each AC cycle with a bridge rectifier?
     
  3. shaheed

    Thread Starter New Member

    Feb 3, 2011
    4
    0
    i need answers please
     
  4. guitarguy12387

    Active Member

    Apr 10, 2008
    359
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    Now that's just plain rude, is what that is...
     
  5. Adjuster

    Well-Known Member

    Dec 26, 2010
    2,147
    300
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