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Calculate amplitude and phase of a filter cricuit

  1. Apr 28, 2015 #1
    • homework type question so moved to the homework forum
    9OSqEuL.png

    I have the values for all the voltages and currents. I'm wondering how I go about it, given that v3 = v30 (cos (Θ3) + isin(Θ3)) and I have a value for v3. Since v3 = i4 * Z where Z is C3 and R2 in parallel, there'd still be 2 unknowns. I feel as though I'm missing something obvious, if anyone could give me a little help, that'd be great.
     
  2. jcsd
  3. Apr 28, 2015 #2

    NascentOxygen

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    Staff: Mentor

    You're wanting to calculate v3 in terms of v0? You'll need to use mesh or nodal analysis.
     
  4. Apr 28, 2015 #3
    I already know the values of i1, i2, i3, i4, v1, v2, v3 from doing a nodal analysis on a circuit earlier in this question which is exactly the same apart from that it contains resistors instead of capacitors and inductors.
     
  5. Apr 28, 2015 #4

    NascentOxygen

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    Staff: Mentor

    So you'll retrace the steps in the analysis, but substituting
    some R's with ##j\omega L## or ##\frac 1{jwc}##.
     
  6. Apr 30, 2015 #5
    This is the earlier part,
    0RCDpIE.png
     
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