How Do You Calculate Voltages in a Circuit Using Superposition?

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Discussion Overview

The discussion revolves around calculating voltages in a circuit using the superposition theorem. Participants are addressing a homework problem that involves determining the voltage across current sources in a given circuit configuration, with a focus on applying superposition correctly.

Discussion Character

  • Homework-related
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant describes their attempt to find partial voltages due to a 2A current source by turning off the independent voltage source, but struggles with finding the voltages due to a 3V voltage source.
  • Another participant corrects the first by stating that the current source should be opened rather than shunted, and that the voltage source should be shunted.
  • A participant reiterates their need for assistance in finding voltages V1 and V2, indicating they have already solved for the 2A source and are now focused on the 3V source, while expressing frustration over unsuccessful attempts using mesh and nodal analysis.
  • A later reply challenges the accuracy of the participant's figure and suggests consulting another user's post for clarification.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the correct approach to the problem, as there are differing opinions on how to apply superposition and corrections regarding circuit analysis methods.

Contextual Notes

There are indications of confusion regarding the application of superposition, specifically in how to handle the independent sources. The discussion also reflects uncertainty about the accuracy of the circuit figures provided.

Iyafrady
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Homework Statement


Use superposition to obtain the voltage across each current source.



Homework Equations



[PLAIN][PLAIN]http://i200.photobucket.com/albums/aa225/earless846/circuit.jpg

The Attempt at a Solution


I found the partial voltages v1 & v2 due to the 2A current source(shutting off the indep. voltage source), but i can't get the partial voltages due to the 3V voltage source(shutting of the indep. current source) can someone help!
 
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You open the current source, not shunt it. Shunt the voltage source.
 
I already solved the partial voltages due to the 2A sourcei did that by shutting off the voltage source!I only need to find the other partial voltages due to the 3V source by shutting off the 2A source.What I am asking is how to find V1 and V2 if the circuit looked like this:

[PLAIN][PLAIN]http://i200.photobucket.com/albums/aa225/earless846/circuit-1.jpg

Ive tried mesh and nodal analysis but i keep getting the wrong answer.
 
Last edited by a moderator:
Iyafrady said:
I already solved the partial voltages due to the 2A sourcei did that by shutting off the voltage source!I only need to find the other partial voltages due to the 3V source by shutting off the 2A source.What I am asking is how to find V1 and V2 if the circuit looked like this:

[PLAIN][PLAIN]http://i200.photobucket.com/albums/aa225/earless846/circuit-1.jpg

Ive tried mesh and nodal analysis but i keep getting the wrong answer.

Your figure is wrong. Read wildman's post.
 
Last edited by a moderator:

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