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voltage transfer (my 6.002x homework)

Discussion in 'Electronics Homework Help' started by kbcheong, May 5, 2012.

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  1. kbcheong

    kbcheong

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    Mar 24, 2012
    In this diagram, in order to calculate the voltage transfer ratio, I use the impedance to calculate vo/vin, if the impedance for vo = L + 1/Cjw and for vin = R1, what about R2? is it part of vo or vin?
     

    Attached Files:

  2. Harald Kapp

    Harald Kapp Moderator Moderator

    9,897
    2,096
    Nov 17, 2011
    To calculate Vo make an equivalent circuit consisting of a voltage source Veq and an equivalent impedance Zeq. Veq and Zeq can be computed from Vin, R1, L and C without using R2.
    Hint: consider the cases R2=0 Ohm and R2=oo Ohm to arrive at the necessary equations.

    Use this equivalent circuit and insert R2. You now have a common voltage divider and you can easily calculate the transfer ratio.

    Harald

    By the way: You've been given a lot of help in this forum during the last months. It would be nice to get some feedback, too, once your question has been answered.
     
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,361
    2,756
    Jan 21, 2010
    Why don't you help us more by giving us the full question from your homework.

    You know, the one that begins:

    And why didn't you put this in the homework section?
     
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