Multisim - Vth

Discussion in 'General Electronics Chat' started by xxxyyy, Jan 25, 2012.

  1. xxxyyy

    Thread Starter Member

    Oct 7, 2011
    34
    1
    Is it possible to find Vth (Thevenin's voltage) using Multisim?
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Yes, if you build the circuit and simulate it.
     
  3. xxxyyy

    Thread Starter Member

    Oct 7, 2011
    34
    1
    Here is original circuit:

    Code ( (Unknown Language)):
    1. http://imageshack.us/f/39/123456pj.png/
    My job is to determine the voltage seen by R5. I removed that resistor and connected Voltmeter instead of it, picture bellow.

    Code ( (Unknown Language)):
    1. http://imageshack.us/f/812/7890.png/
    Is it correct?
     
  4. xxxyyy

    Thread Starter Member

    Oct 7, 2011
    34
    1
    By the way, I calculated by hand that Vth should be 2V, but Multisim says that it is 4V, as you can see.
     
  5. crutschow

    Expert

    Mar 14, 2008
    12,986
    3,226
    Is R6 the load or part of the Thevenin circuit?

    If its the load then you remove it and measure the voltage as you've shown.

    If its part of the circuit then you leave it in and measure the voltage across it.
     
  6. xxxyyy

    Thread Starter Member

    Oct 7, 2011
    34
    1
    I made mistake in my second post, I said "My job is to determine the voltage seen by R6" and I later corrected it to "My job is to determine the voltage seen by R5". R5 is load.
     
    Last edited: Jan 25, 2012
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