varactor diodes

Discussion in 'Homework Help' started by krogerson2, Jan 15, 2009.

  1. krogerson2

    Thread Starter Member

    Jan 8, 2009
    24
    0
    If a silicon varactor exhibits 200pF of capacitance a 0 bias and is in parallel with a 60pF cap and a 200mH inductor what is the range of the resonant frequency as the diode varies through reverse bias of 3-15V?
     
    Last edited: Jan 15, 2009
  2. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,040
    287

    This cannot be answered without knowing what the varactor capacitance is at FULL bias.

    eric
     
  3. krogerson2

    Thread Starter Member

    Jan 8, 2009
    24
    0
    isn't there a way to find the capacitance at full bias using the 15V
     
  4. leftyretro

    Active Member

    Nov 25, 2008
    394
    2
    "in parallel with a 60pF cap of 200pF "


    what the heck does that mean :cool:

    Lefty
     
  5. krogerson2

    Thread Starter Member

    Jan 8, 2009
    24
    0
    i meant a 200mH inductor
     
  6. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,040
    287
    Nope....except from the factory spec sheet.

    eric
     
Loading...