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Homework Help: Please check if I did this correctly. (Simple Transformer-Circuit Problem)

  1. Feb 13, 2012 #1
    1. The problem statement, all variables and given/known data


    I am supposed to find Ix, the current at the top right. There is an ideal transformer in the circuit.

    I basically applied KCL at the 4 nodes, and applied Transformer Voltage Equation and Transformer Current Equation. But I think I am ONE equation short..

    Can someone please look over my work (in the picture) and tell me what's wrong? Been at this for a while now.

    Thanks for all your help!
  2. jcsd
  3. Feb 14, 2012 #2

    rude man

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    Homework Helper
    Gold Member

    I can't make out the writing near the top of your page, including the diagram.
  4. Feb 14, 2012 #3

    Here is the original picture.

    Ibasically did KCL setting the nodes from left to right

    Va, Vb, Vc, Vd

    You can zoom in and it should be more clear.
  5. Feb 14, 2012 #4


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    Staff: Mentor

    With your two ideal transformer equations and the KCL equations for your nodes b, c, and d, you should have enough equations. Perhaps you're trying to force Ix into the mix too soon. Find the node voltages first, then use them to find Ix.
  6. Feb 14, 2012 #5
    you're right. I forced I_x too early. I figured out va and vc and THEN plugged it into Ix.

    Thanks a lot! makes a lot more sense now~
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