The discussion revolves around a homework problem related to finding the Thevenin equivalent circuit. Participants are reviewing an attempted solution and providing feedback on the methodology and calculations involved in determining the Thevenin voltage and resistance.
Participants express differing views on the treatment of the 10k resistor and the correct formulation of V_{Th}. There is no consensus on whether the removal of the resistor is appropriate or on the correct definition of the Thevenin voltage.
Some assumptions about circuit configurations and the roles of components are not fully explored, leading to potential ambiguities in the analysis. The discussion reflects varying interpretations of the problem setup.
if you look at the second circuit i have labeled the two nodes V_A and V_AB, those are the two nodes in which i am going to do nodal analysis in.doodle said:Before you can actually start solving the problem, you will need to identify firstly the two points A and B for which the Thevenin equivalent circuit is defined. So where are these points upon which you want to find the Thevenin equivalent circuit? Across the 10k resistor?
GREAT! thanks teknodude!teknodude said:I didn't calculate the Vth, but your work nodal analysis looks correct to me. On a side note, you didn't really need to convert the mA to A or the kohms to ohms. The prefixes will cancel giving you V during the calculations. Now find Rth to complete the problem.
mugzieee said:if you look at the second circuit i have labeled the two nodes V_A and V_AB, those are the two nodes in which i am going to do nodal analysis in.
doodle said:I have a few concerns.
1. Why remove the 10k resistor? Shouldn't the load resistor (if there should be one) be lying between the two points where the Thevenin equivalent circuit is defined?
2. I don't think V_{AB} = V_{Th} as you have written in the solution. If the Thevenin equivalent circuit is to be determined across nodes AB and A, then V_{Th} = V_{AB} - V_A.