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Re: More newbie questions
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To: tesla@pupman.com
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Subject: Re: More newbie questions
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From: Tesla List <mod1@pupman.com>
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Date: Sun, 19 Oct 1997 21:38:31 -0600 (MDT)
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Approved: mod1@poodle.pupman.com
---------- Forwarded message ----------
Date: Sun, 19 Oct 1997 12:42:10 +0500
From: "Alfred A. Skrocki" <alfred.skrocki@cybernetworking.com>
To: Tesla List <tesla@pupman.com>
Subject: Re: More newbie questions
On Thu, 16 Oct 1997 16:34:52 -0400 (EDT) Aric
<ceg4760m@cs.wright.edu> wrote;
> What is a good source for thick polyethylene sheet for caps? The thickest
> stuff I can find at the hardware store is 6 mil, and with a 30,000V cap
> calling for around 75-90 mil of dielectric, that is a lot of layers! The
> stuff I've found is intended for sealing windows during cold weather and
> as a light-duty tarp. Is there a common application for stuff in the
> 20-40 mil range? A local plastic supplier wants to charge $0.25/sq. foot
> for 15 mil PE. This strikes me as being way to pricey.
Aric, it is better to stick with a few layers of the 6 mil. polyethylene
and put several higher value caps in series to get the voltage tolerance
you need. This will yield a more robust design than trying to build a
single cap out of thick polyethelene of the value you need, andit is far
less expensive.
Sincerely
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Alfred A. Skrocki
Alfred.Skrocki@CyberNetworking.com
.ooo0 0ooo.
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