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On Wed, 2 Jan 2008 05:04:17 -0800 (PST), Keith Dysart
wrote: Given your previous writings, I suspect that you have a solid understanding of the behaviour of an open-circuited transmission line excited with a step function. Hi Keith, I do, but I haven't dwelled on the matter too much since my days in RADAR where a Pulse Forming Network could provide a kick from a very big bottled Thyratron. I can also in those early days recall an inadvertent opening of a circuit to a constant current device - another kick. As for naming the multitude of combined stepped wave shapes, front porch and back porch regularly make their appearances a Trillion times an hour. I simply couldn't wade through the myriad issues that you were trying to pull together. I prefer to drill down on one thing at a time and then bring them together. For instance, your last example of dueling sources was clearly blighted and allowed for easy dismissal. However, its inclusion was distinctly at odds with the other discussion which reveals the hazard of the shotgun style of answering all of Cecil's objections in one breath. Cecil's crafted problems immediately fail with one detail, there is no reason to pursue them all. One need only review the "purpose" of this thread being On Tue, 18 Dec 2007 09:33:23 -0600, Cecil Moore wrote: There seems to be mass confusion even among the gurus on this newsgroup as to the difference between standing-wave current, as exists on a 1/2WL dipole, vs traveling-wave current, as exists on a terminated antenna like a rhombic. Clearly, Cecil was the most dazed and confused guru when I drilled down on this "purpose" of his own choice, on his own terms. The subsequent 450 postings have merely roiled in the seascape on sloshing waves when this anchor of "purpose" was cast off. Perhaps you could make an attempt at writing a clear description of the behaviour of such a system in terms of charge flow and storage. Since "wave" is a word overloaded with meanings, it would be good not to use it in the description. I can appreciate your attempt to confine it to charge flow, but for me that leading edge merely introduces a wide spectrum of RF rather than restricting the topic. If I were to give any thought to the minutia of current flow along infinitesimal sections, it has long since been focused in the realm of coulomb blockades at the nano scale of quantum dots, and where sound waves comfortably migrate in the 100s of THz. I think few (make that zero) here are terribly interested in that side-bar. Once a clear description exists, I can extend it using the same clear terminology to illustrate the points of interest. Methinks you are going to suffer it being ignored by the target of your intentions (Cecil?). His affliction of Netzheimers only allows any topic to be discussed to its logical confusion. If, for the sake of lurkers, any topic merits an indepth study, it is best left to publishing at a page. I committed several hundred pages to fractals in the past, and Chip never manage to summon up more than half a dozen; and certainly never any coherent theory. Drilling down on the supporter's stated interest, on his own terms, almost always rents open the seams of failure. Again, the points of interest I elaborated on were consumed by the very few (maybe two, and mostly to their astonishment of so much effort going to so much "so what?"). We can all agree that the march of time has ravaged any millennium aspirations of the dawn of the fractal age. 73's Richard Clark, KB7QHC |
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