op amp Transfer

Discussion in 'Homework Help' started by jstrike21, Feb 18, 2010.

  1. jstrike21

    Thread Starter Member

    Sep 24, 2009
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    [​IMG][​IMG][​IMG]

    Im struggling on starting to get the transfer function here any ideas on how to start?
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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  3. mik3

    Senior Member

    Feb 4, 2008
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    Assume that the input current to the op amp is zero and that the inverting node (V-) and non-inverting node (V+) voltages are equal. Find (V-) from Vo by using the voltage divider rule. Then say that (V+)=(V-). Find (V+) with respect to Vin and then equate (V-) and (V+). Finally, rearrange as to find Vo/Vin.
     
  4. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    Also, R3 is irrelevant. It will not appear in the transfer function (assuming an ideal op amp).
     
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