Re: Plate thickness
Subject: Re: Plate thickness
Date: Thu, 1 Feb 96 07:17:00 UTC 0000
>Received: from relay1.geis-dot-com (relay1.geis-dot-com [188.8.131.52]) by uucp-1.csn-dot-net (8.6.12/8.6.12) with ESMTP id AAA08427 for <tesla-at-grendel.objinc-dot-com>; Thu, 1 Feb 1996 00:45:06 -0700
Mark Graalman said,
> I have a thought that I'd like to run by you all, the calculated skin
>effect depth of penetration at 100 KHZ is about .011" in copper, if a
>capacitor is built using .002"thick foil as plate material would it be
>possible that since the foil is thinner than the depth of conduction at
>this frequency there would be a loss of current discharge capability to due
>an increase in the "RF" resistance?
I was going to say: at work we use a spayed copper conductive paint for ESD
protection, it runs 25-150 miliohms per square sheet resistivity at 0.002"
thickness (depending on type) and 1oz. copper PCB foil about 2-3 miliohms
per square. At this level of resistance you are just not wasting copper.
But then I releazed, I don't remember what happens when the conductor is
thinner than the skin effect.
Any RF engineers out there? fred-at-triumf? ed-at-alumni?