Can Thevenin voltage ever be negative?

Question

So in context of Thevenin's and Norton's theorem, can Thevenin voltage $V_{th}$, as in http://en.wikipedia.org/wiki/Thevenin_theorem, ever be negative? I know that $R_{th}$ can be negative, but never thought of $V_{th}$ one until now.

garyp · Answer

Yes. It depends on how you define the direction of positive voltage in your equivalent voltage source. In other words, if you switch the positions of the "+" and "-" on a typical diagram, the sign of the voltage will switch.

Answered by garyp on December 26, 2020

Can Thevenin voltage ever be negative?

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