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Transcript
Network Theorems (AC Circuits) D C Kulshreshtha Maximum Power Transfer Theorem for AC Circuits Next Next The power delivered to the load is Phasor current and voltage are where Next Next A little forethought saves us some work. (XTh + XL) absorbs no power; any nonzero value only reduces PL. Hence we can put XL = - XTh, so as to get Next This expression, we have already maximized for purely resistive case, by selecting RL = RTh. Hence, we must have Next Exercise Show that if the load is purely resistive in an ac circuit, the condition for maximum power transfer is Next
