resistave and reactive circuits


Joined Mar 31, 2012
IF you are defining both capacitive and inductive REACTANCE as positive values (a very bad, though unfortunately common, practice) then this is what you would do. The far, far better definition is that reactance is the imaginary part of impedance, and thus capacitive reactance is negative while inductive capacitance is positive. As a result, you add reactances in series.

But IMPEDANCE is a concept that combines the magnitude and the phase information and therefore you always add impedances that are in series. This is regardless of whether you use complex impedance or whether you just use vector impedance.