Thevenin therem problem,,,,,,Plllz Help !!???

Discussion in 'Homework Help' started by ujnikm, Nov 15, 2012.

  1. ujnikm

    Thread Starter New Member

    Nov 15, 2012
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    Hello guys,,,,,,,, I've an assignment for electronics that i should deliver on Saturday but there is a problem that i can't solve anymore so pllz help me !!!???
    in this pic he wants R Thevenin pllz tell me how to find it while having 2 sources one is voltage and the other is current and u can't use source transformation !!!

    [​IMG]
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  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    To find Rth all you need to do is to replace all voltage sources with short circuit and all current sources with open circuit.
     
  3. ujnikm

    Thread Starter New Member

    Nov 15, 2012
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    thanx man i forgot this,,,,,coz i'm fresh to Thevenin theorem:D:D
     
  4. ujnikm

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    Nov 15, 2012
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    if i want the the Thevenin equivalent how will it be ??!!!
     
  5. Jony130

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    Well I don't understand your question?
     
  6. ujnikm

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    Nov 15, 2012
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    i mean that if he wants me to put this circuit in the Thevenin form (A voltage source(Vth) and A resistance(Rth)) in series.
    now we have Rth=6 Ω
    we have to evaluate Vth ...how could we do this??
    hint:i mean that i want the Thevenin equivalent circuit for it :):)
     
  7. Jony130

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    Feb 17, 2009
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    OK. I understand now. Simply use circuit analysis to find Vth.
    For example try use superposition
    And yes Rth resistance is equal to = 2 + 12/3 = 6Ω
     
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  8. ujnikm

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    Nov 15, 2012
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    Thank you very much Jony ,,,,,, I'm sorry if my questions were silly
     
  9. Jony130

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    You don't need to be sorry. Did you managed to solve this problem and find the answer?
    I find Vth = 52V and I use superposition.
    First I remove a current source (open circuit) and find Vth1. Next I remove a voltage sources (short circuit) and connect a current source and find Vth2. And finally answer is Vth = Vth1+Vth2
     
    Last edited: Nov 16, 2012
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  10. ujnikm

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    Nov 15, 2012
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    Thank u for helping ,,,,,, With ur Help I manage to solve it
     
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