op amp help with vout

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Discussion in 'Homework Help' started by kirillavitch, Oct 5, 2011.

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  1. Oct 5, 2011 #1
    kirillavitch

    Thread Starter New Member

    Oct 5, 2011
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    I am totally lost about this problem. The circuit layout is the same as the pic just that the3uA is replaced with 27uA and I need to calculate Vout ..
     
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  2. Oct 5, 2011 #2
    kirillavitch

    Thread Starter New Member

    Oct 5, 2011
    2
    0
    The top most resistor is 33 kΩ
     
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  3. Oct 5, 2011 #3
    Georacer

    Moderator

    Nov 25, 2009
    5,154
    1,281
    Are you familiar with the superposition theorem? It reduces the analysis to three simple OpAmps circuits.
     
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  4. Oct 5, 2011 #4
    t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    790
    There are a couple of initial assumptions you might also need to make.

    If the op-amp is considered to be ideal. Then ....

    1. The input currents to the op-amp input terminals are zero.
    2. The amplifier output resistance is zero.
    These points will then assist with the analysis.
     
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