1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 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


    User Avatar

    Staff: Mentor

    Set V2 and dV2/dt = 0. Does that help?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook