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TheCanadian
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I have uploaded an image of the situation I am looking at. Essentially, the Thevenin voltage is being found, and one thing I don't quite understand in this example is the text saying R2 can be neglected when trying to find the Thevenin voltage. It says R1 and R3 form a voltage divider, but I don't quite see this since shouldn't the equivalent resistance between R2 and R3 be found in such a case, and this equivalent resistance acts as a voltage divider with R1? I found the Thevenin resistance, which was correct, and then applied $$ V_{Th} = I_{Short circuit}R_{Th} $$ but when I do this, I am slightly confused as to why when a short circuit is made, then R2 is neglected when trying to find the current through this area. Isn't the short circuit supposed to be directly between node A and B? Wouldn't this result in R2 still being included when finding $$ I_{Short circuit} \text{?}$$
Any insight into why R2 should be neglected and how ## V_{Th}## was computed would be greatly appreciated!
Edit: I seem to be clearly missing something. After looking at the example here, I found $R_{Th}$ correctly again, but don't quite understand why the numerator to find $$V_{Th}$$ is R2+R3...shouldn't it just be $$R_{Th}$$?
Any insight into why R2 should be neglected and how ## V_{Th}## was computed would be greatly appreciated!
Edit: I seem to be clearly missing something. After looking at the example here, I found $R_{Th}$ correctly again, but don't quite understand why the numerator to find $$V_{Th}$$ is R2+R3...shouldn't it just be $$R_{Th}$$?
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