# Thevenin circuit

Discussion in 'Homework Help' started by blueone, Dec 6, 2014.

1. ### blueone Thread Starter New Member

Dec 6, 2014
3
0
Hello

so i have this circuit and I need to determine the Thevenin Voltage between point A and B and the thevenin restistance, so that I can determine the current throught the load resistor.

I already determined the current ( 300 mA) with the nodal method, but I don't know how to do it with thevenin. I tried several times, but with no succes.

Jan 29, 2010
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3. ### shteii01 AAC Fanatic!

Feb 19, 2010
3,500
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Surely your textbook has examples of how to find Thevenin voltage and resistance.

4. ### blueone Thread Starter New Member

Dec 6, 2014
3
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Yes I do I have a step by step way described in my book, but even tough I follow it. I can't get the results, for this problem. Other exercises on thevenin went fine.

5. ### WBahn Moderator

Mar 31, 2012
18,085
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So show your work so that we can see what you are doing right and what you are doing wrong. Just present your best effort to solve your homework so that we have something to start from.

6. ### Cliff Lian New Member

Dec 25, 2014
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Hey
The thevenin's equivalent resistance is zero!!

7. ### WBahn Moderator

Mar 31, 2012
18,085
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Although the OP is pretty clearly long gone, please don't just provide answers to people's homework problems. That's not what this forum is about.

8. ### crutschow Expert

Mar 14, 2008
13,475
3,362
Hey
How did you come up with that?

9. ### WBahn Moderator

Mar 31, 2012
18,085
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Considering that terminals A and B are connected direction across a two series-connected voltage sources....

10. ### crutschow Expert

Mar 14, 2008
13,475
3,362
I'm blind. Missed the other voltage source on the left.

11. ### blueone Thread Starter New Member

Dec 6, 2014
3
0
Sorry I know it has been a long time. Actually it is not a homework problem, it was a question from a test. My problem with thevenin is that I don't know what to do when they ask for a voltage or current in the middle of the circuit. But here is one of my countless tries

Mar 31, 2012
18,085
4,917