You better take another look at the data. You will find that the KVAR ratings
for the large doorknobs is more like .5-1KVAR at RF. The maximum current
rating at 1MHZ is only approx. 2A. How well is this going to play on 10M?
The assumption of a 1/f maximum current dependence is not quite true, as I am
finding out as I study this issue. The 1/f rule is fine for skin-effect
related metallic conductors, but the dielectric losses are considerably more
complex.
This whole issue of high-power capacitor ratings has bothered me for some
time and I hope to have some new information to share in the near future.
Manufacturers data is quite scant, leaving us to do a lot of guessing.
Eric von Valtier K8LV
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