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RE: Fools Errand.

"The bit that seems missing is, if the cap gets sufficiently large, it is no longer matching the idealized schematic with just a plate on each side of the circuit. There is capacitance to other stuff. "

Probably not that much of an issue for something like a power supply final capacitor, or a cathode bypass capacitor. (Assuming someone is not trying to get 25,000uF by connecting lots of motor-run capacitors in parallel!)

But it's not really an issue in practice anyway, I feel. Discussion of a large-capacitance limit is not so much a proposal that one would actually use a 1 farad power supply capacitor in real life, but to try to establish a logical point that if one were to do so, then one could essentially discount the possibility of there being an audible "colouration" caused by AC voltage across the capacitor. But as long as one is trying to debate with people who seem not to accept this as an almost inevitable consequence of basic laws of physics, it is hard to see how to make headway in a discussion...


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