Envelope detector

Discussion in 'Homework Help' started by omerysmi, Nov 14, 2014.

  1. omerysmi

    Thread Starter Member

    Oct 10, 2014
    44
    0
    I need to change something in the circuit of the detector to get reverse phase in the output of the detector
    upload_2014-11-14_18-35-31.png


    My idea is to change the direction of the diode, Am I right? (I mean that the v_in(t) will enter to the cathode)
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,157
    1,795
    First question is -- "can the + input go below the - input". If not you'll get nothing. Even if it can, I'm not sure you'll get what you expect
     
  3. omerysmi

    Thread Starter Member

    Oct 10, 2014
    44
    0
    Sorry but I didn't understand your answer
     
  4. dalam

    Member

    Aug 9, 2014
    58
    6
    He means to say that the output depends on the nature of your input.
    SquareWave.gif
    For the wave above you will get always zero voltage as output as the diode always remains off.
    download.png
    But in this case you will get what you want that is reversed output.
     
  5. omerysmi

    Thread Starter Member

    Oct 10, 2014
    44
    0
    Can you (or anybody else) circuit for me the new diagram after the changes ?
     
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