FM Transmitter multisim simulation

Discussion in 'Wireless & RF Design' started by goldriver, Dec 9, 2012.

  1. goldriver

    Thread Starter New Member

    Oct 18, 2011
    5
    0
    I am having problems simulating this fm transmitter circuit on multisim. The oscilliscope doesn't show any oscillations ,it shows a straight DC-LINE. Can someone please check this circuit on multisim and identify what seems to be the problem. Please help
     
  2. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    The transistor model is maybe incomplete.

    Certain internal capacitances are not included.

    These can be required as functional elements for such circuits.
     
  3. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    Multisim is old and has many problems. I think it is used only by teachers.
    The circuit works fine on a modern LTspiceIV sim program that is used by many engineers.
     
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