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Keith Dysart wrote:
Actually, we have shown that that is not the case. If the instantaneous power is not dissipated in the source resistor, then neither is the average of the instantaneous power. And we have shown that the instantaneous power is not dissipated in the source resistor. Actually, we have shown exactly the opposite. Maybe a different example will help. We are going to replace the 23.5+j44.1 ohm load with a *phase-locked* signal generator equipped with a circulator and 50 ohm load. The signal generator supplies 18 watts back to the original source and dissipates all of the incident power of 50 watts, i.e. all of the forward power from the original source. The original source sees *exactly the same 23.5+j44.1 ohms as a load*. Rs Vg +----/\/\/-----+----------------+--2---1-----+ | 50 ohm \ / | | 3 18 watt Vs 1 wavelength | Signal 100v RMS 50 ohm line 50 Generator | ohms | | | | +--------------+----------------+----+-------+ gnd gnd The conditions at the original source are identical. The circulator load resistor is dissipating the 50 watts of forward power supplied by the original source. The signal generator is sourcing 18 watts. Your instantaneous power equations have not changed. Are you going to try to tell us that the 18 watts from the signal generator are not dissipated in Rs???? If not in Rs, where???? -- 73, Cecil http://www.w5dxp.com |
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