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I have consolidated three replies below...
On Mar 20, 12:29*am, Cecil Moore wrote: Keith Dysart wrote: I then restated your claim as applying only at those particular times and not at other points in the cycle, but you were unhappy with that limitation. There are no limitations. If zero interference exists, then 100% of the reflected energy is dissipated in the source resistor. Sentence one says "no limitations". Sentence two specifies a limitation. But your paper did provide that limitation and indicated that circuit (Fig 1-1) with a 45 degree line was an example which satisfied that limitation. But in subsequent discussion you have waffled about whether, for the circuit in Fig 1-1, "100% of the reflected energy is dissipated in the source resistor" is applicable for all time or only for those instances when the source voltage is equal to 0. Could you clarify whether your claim for the circuit of Fig 1-1 applies to all time, or just to those instances when the source voltage is 0. On Mar 20, 12:34 am, Cecil Moore wrote: Keith Dysart wrote: If you wish to have your equalities apply at only selected points within the cycle, that works for me. Not only at selected points within the cycle but also for average values. If zero average interference exists then 100% of the average reflected energy is dissipated in the source resistor which is the subject of my Part 1 article. If the instantaneous interference is zero, 100% of the instantaneous reflected power is dissipated in the source resistor. Perhaps this has clarified. So you are only claiming that reflected energy is dissipated in the source resistor at those instances when the source voltage is zero. Good. Now as to averages: Averaging is a mathematical operation applied to the signal which reduces information. I do agree that the increase in the average dissipation in the source resistor is numerically equal to the average value of the reflected power. But this is just numerical equivalency. It does not prove that the energy in the reflected wave is dissipated in the source resistor. To prove the latter, one must show that the energy in the reflected wave, on an instance by instance basis is dissipated in the source resistor because conservation of energy applies at the instantaneous level. And I have shown in an evaluation of the instantaneous energy flows that the energy dissipated in the source resistor is not the energy from the reflected wave. I repeat: When zero interference exists, 100% of the reflected energy is dissipated in the source resistor. But only at those instances where the source voltage is zero. On Mar 20, 12:50 am, Cecil Moore wrote: Keith Dysart wrote: But I notice that you have not yet indicated which energy equation I may have written that was unbalanced. Why should I waste my time finding your conservation of energy violations? Mostly to prove that my analysis has an error. I repeat: When there exists zero interference, 100% of the reflected energy is dissipated in the source resistor. Since you think you provided an example where that statement is not true, your example violates the conservation of energy principle. But if there is no error in my analysis (and you have not found one), then perhaps you should examine whether the clause "When there exists zero interference, 100% of the reflected energy is dissipated in the source resistor" is in error. Sometimes one has to re-examine one's deeply held beliefs in the light of new evidence. It is the only rational thing to do. ...Keith |
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