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RLC circuits problem

  1. Jul 21, 2010 #1
    Hello everybody,

    So I've been on this problem for nearly 4 hours now and am still blank at what i need to do as this book only has 2 RLC circuit examples that are not helping.

    Code (Text):

    |      |      |
    Vs     L      C
    |      |      |
    (well...this diagram didn't work well... basically, the Vs, L and C are parallel to each other with the L between the reistances and the Vs and C on the outsides.)
    Vs = 10 + 30u(t) V, R1 = 50 Ohms, R2 = 20 Ohms, L = 10 H, C = 4 F

    relevent equations: V = IR, I = C*v', L = I'

    By using meshes, I am able to get the following 2 equations:

    10i' + 50i = vs + 10j'


    10j' + 20j = -vc + 10i'

    where i is the current in the first mesh, j is the current in the second mesh. I'm trying to find the currents through the resistances and the voltages through the capacitance and inductance.

    What do I do now? I figure I can turn the j currents into vc but that would leave i and i'.
    Last edited by a moderator: Jul 21, 2010
  2. jcsd
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