rectifier circuit

Discussion in 'Feedback and Suggestions' started by sumitest, Mar 14, 2016.

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  1. sumitest

    Thread Starter New Member

    Mar 14, 2016
    4
    0
    hello everyone,
    I have made full wave bridge rectifier circuit using IN4007 diodes. As per the theory we all know if my input voltage is below the threshold of the diode it will not conduct but in my case I'm using signal from function generator if I give 4V rectifier is working very well but it is also conducting when supply is 1V only. I don't the reason pls help me out from this problem.
     
  2. StayatHomeElectronics

    Well-Known Member

    Sep 25, 2008
    864
    40
    Here is a diode curve, from the AllAboutCircuits chapter on semiconductors, chapter 3.

    [​IMG]

    To simplify the math we idealize the curve to show that current flow only occurs if the diode voltage, VD, is above 0.7 V. From the non-idealized graph above, we can see that current still flows when the diode voltage is below 0.7 V.
     
  3. crutschow

    Expert

    Mar 14, 2008
    13,056
    3,245
    Why have you double-posted the same question?
     
  4. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    One thread is enough and this is the wrong forum to post it.
     
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