conjugate impedance การใช้

Power factor correction ( where an inductive reactance is used to " balance out " a capacitive one ), is essentially the same idea as complex conjugate impedance matching although it is done for entirely different reasons.
However, physically realizable sources and loads are not usually totally resistive, having some inductive or capacitive components, and so practical applications of this theorem, under the name of complex conjugate impedance matching, do, in fact, exist.