Thevenin Equivalent with Test Source

Discussion in 'Math' started by Heisenberg5, Nov 2, 2014.

  1. Heisenberg5

    Thread Starter New Member

    Nov 2, 2014
    I cannot seem to find a way to use the test source to find either Vtest or Itest. Can anyone tell me if I have to turn off all independent sources? or do I use the test source method when there are no independent sources?
  2. WBahn


    Mar 31, 2012
    You don't HAVE to turn off the independent sources, but it sure makes life a lot simpler. If you don't turn them off, then you have to isolate how much of the test signal is due to the test source and how much is due to the other independent sources. You can do this by looking for R = dv_test/di_test.