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![]() "Cecil Moore" wrote in message ... The forward current and reflected current cancel at the mouth of the shorted 1/4WL stub. However, they add in-phase 1/4WL away at the short, maybe to many amps of RF current at the shorted end. Since there is no physical impedance at the mouth of a stub, nothing except superposition of forward and reflected waves happens there and nothing except a virtual impedance exists there. All of the action is at the shorted end of the stub where there exists 100% reflection. -- 73, Cecil http://www.qsl.net/w5dxp I just did the simulation again, and you are right. For a 1V signal feeding a 50 Ohm line through a 450 Ohm series resistor, there is 20 ma of current flowing through the short. Don't understand why I didn't see it the other time. There is 0 current through the 450 Ohm resistor. Tam/WB2TT |
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