How to get the Thevenin Voltage

Discussion in 'Homework Help' started by StuckStudent123, Sep 30, 2016.

  1. StuckStudent123

    Thread Starter New Member

    Sep 23, 2016
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    Hi,
    I have this circuit (attached) and the question is: find the Thevenin voltage. If I find the voltage over the 1K Ohms (near the interface line) will that be the Thevenin Voltage?
    Thanks Fig 4.1.png
     
  2. WBahn

    Moderator

    Mar 31, 2012
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    It will be if you remove the load first.
     
  3. StuckStudent123

    Thread Starter New Member

    Sep 23, 2016
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    0
    So if I ignore RL the voltage over the 1K will be RTH?
     
  4. WBahn

    Moderator

    Mar 31, 2012
    17,743
    4,795
    You can answer that question by considering what the Thevenin voltage represents. Look at the equivalent circuit. What will the voltage at the load terminals be if the load is removed? It will be the Thevenin voltage. Since this is an equivalent circuit (in terms of voltage and current at the load terminals), then the Thevenin voltage is also the voltage appearing at the load terminals in the actual circuit when the load is removed.
     
    StuckStudent123 likes this.
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