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Re: [Amps] Advice needed for SS amp

To: amps@contesting.com
Subject: Re: [Amps] Advice needed for SS amp
From: Manfred Mornhinweg <manfred@ludens.cl>
Date: Sat, 08 Jun 2013 21:10:37 +0000
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Ron,

I do not know what the breakdown Voltage or dielectric constant are, but the "cover sips" are uniform very thin square (~3/4") glass
plates used to cover the specimens under a microscope, the much
thicker "slide" (~3/4" x 2") might be an alternative.

I wouldn't dare to make capacitors from such thin glass plates. To achieve a stable, predictable capacitance, it's necessary to compress the stack of copper sheets and insulator sheets with a significant force, to get the metal flat against the insulator, without air in between. And I can't imagine how to do that without cracking those glass plates!

Also thin glass might be problematic with heat, both during soldering and later during use. While glass has a very high melting point, it easily cracks from thermal stress.

Maybe some plastic foil could be the answer. But teflon is very soft, and many other plastics don't handle heat well enough, or their loss factor is too poor.

Manfred

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