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Second Order Op Amp circuit: Find Vo for t > 0

  1. Apr 3, 2007 #1
    1. The problem statement, all variables and given/known data

    In the circuit below, determine [itex]v_o(t)[/itex] for t > 0. Let [itex]V_{IN}\,=\,u(t)\,V[/itex], [itex]R_!\,=\,R_2\,=\,10\,k\Omega[/itex], [itex]C_1\,=\,C_2\,=\,100\,\muF[/itex].

    http://img249.imageshack.us/img249/3840/problem867cg5.jpg [Broken]

    2. Relevant equations


    3. The attempt at a solution

    Add some node voltages:

    http://img413.imageshack.us/img413/2935/problem867part2vn2.jpg [Broken]

    KCL @ [itex]V_1[/itex]:


    KCL @ [itex]V_2[/itex]:


    Substituting for [itex]\frac{dv_2}{dt}[/itex] in the KCL @ [itex]V_1[/itex] equation:


    Now what do I do to solve?
    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Apr 4, 2007 #2


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    Staff: Mentor

    Set V2 and dV2/dt = 0. Does that help?
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