Let's say we have a circuit composed of simple linear circuit elements (resistors, inductors and capacitors). Now we calculate the Thevenin equivalent circuit for some load within this circuit, and we determine the Thevenin impedance, Z_t.(adsbygoogle = window.adsbygoogle || []).push({});

My question is this: Is it generally the case that the real part of Z_t is positive (Re Z_t greater than or equal to zero)? In particular, has this been proven to be generally the case?

Thanks for any help, Patrick

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# Constraint on Thevenin impedance

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