Zener clipper to convert 40V ac to 35V dc.

Discussion in 'General Electronics Chat' started by iinself, Feb 12, 2015.

  1. iinself

    Thread Starter Member

    Jan 18, 2013
    69
    0
    Hi,
    I am trying to convert 40V rms ac to about 35V using zener clipper circuit, please let me know if this will work.

    Thanks
     
  2. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    I don't think that is a good idea, because the R1 is too small and the VR1 will also small, the voltage cross on the zener diode will be close to V1, it could kill the zener diodes.

    You better using the normal method to get the power, something like full wave rectifier and adding bjt and zener or using LM317 to do the job.
     
  3. #12

    Expert

    Nov 30, 2010
    16,298
    6,811
    Too many years ago to find it now. I saw this circuit done with an LM317 and an LM337 to do a bipolar clipper. If you're good at this, that's all the information you need to duplicate the circuit.
     
  4. ronv

    AAC Fanatic!

    Nov 12, 2008
    3,290
    1,255
    What you have is kind of like a shunt regulator.
    You could put the rectifier diode first, then only one zener to clip the positive peaks.
    Since your source has a resistance of 10 ohms, what is the purpose of the .22 ohm resistor.
    After all that BS from me. The zener is only a one watt one, so check the power in it with spice.
    You don't show a load nor specify how much current you need from the circuit. This is often a problem with shunt regulators.
     
  5. iinself

    Thread Starter Member

    Jan 18, 2013
    69
    0
    Thanks for your responses.
     
  6. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    So you want to ignore this thread, otherwise, how come there is no any useful response?
    How is the next step?
     
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