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james wrote:
snip ***** Agreed that a rig cannot detect the difference between forward and reflected power. If the reflection coeffiecient of the source is zero then final stage of a transmiter will look purely resistive to any power reflected by the load. Thereby that refelcted power is dissapated as heat. Other reflection coefficients at the source will yield lesser amounts of reflected power from the load as heat. james So if I have a perfect voltage source in series with a 50 ohm resistor, and I set the voltage source for 100Vrms (50W to the load, 50W to the source resistor) and I leave the output terminals open (100% reflected power) then the resistor will dissipate 100W? With no current flowing through it? Wow. I gotta review my basic electronics. ------------------------------------------- Tim Wescott Wescott Design Services http://www.wescottdesign.com |