Mutisim question

Discussion in 'Electronics Resources' started by kvsingh21, Jul 8, 2008.

  1. kvsingh21

    Thread Starter Active Member

    Apr 15, 2008
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    0
    I am trying to design a wireless receiver with a pin diode in multisim. My question is how do i insert the light source that gets detected by pin diode.
    Thanks in advance .
     
  2. theamber

    Active Member

    Jun 13, 2008
    318
    0
    I asume you are trying to use the pin diode as an RF switch. I don't think you can simulate a light source but you can insert a voltage source to activate it.
     
  3. kvsingh21

    Thread Starter Active Member

    Apr 15, 2008
    63
    0
    Thanks for reply
    This is my preliminary circuit (ignore values)
    Now how do i add/adjust voltage supply to activate the pin diode(since there is no light source).

    [​IMG]
    [​IMG]
     
  4. theamber

    Active Member

    Jun 13, 2008
    318
    0
    I think you are going to have to increase the frequency.
    The PIN diode has a poor reverse recovery time. So when at higher frequencies turns on it may never turn off.
     
  5. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    657
    As a side note, one end your 2mF cap appears to be connected to the wrong side of the 5 ohm resistor.
     
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