Re: oil for caps (fwd)

To: tesla-at-pupman-dot-com
Subject: Re: oil for caps (fwd)
From: Tesla List <mod1-at-pupman-dot-com>
Date: Tue, 13 Jan 1998 16:27:29 -0700 (MST)
Approved: mod1-at-pupman-dot-com



---------- Forwarded message ----------
Date: Wed, 14 Jan 1998 21:25:45 +1000
From: Ralph Down <rjdown-at-fan-dot-net.au>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: oil for caps (fwd)

Tesla List wrote:
<SNIP>
>   >>
> Ralph,
> 
> I thought the original question here was whether or not one type of oil will
> yield a higher capacitance value (significantly higher, like double) when
> compared to say mineral oil.  Your test shows that a cap with polystrene and
> oil produces more capacitance than a cap with polystrene and air.  No argument
> here, I would expect that.  I calculate that your test cap should produce
> about 978 pf - and you measure a little less, which is also expected as the
> caps we normally build end up with a spacing between plates a little more than
> the measured thickness of the dielectric due to everything not being perfectly
> flat and insuffecient pressure holding the plates together.
> 
> Once again, I maintain that the selection of the type of oil will not
> dramatically affect the capacitance value achieved.
> 
> Ed Sonderman

No argument from me - I used whatever oil I could find - it just
happened to be Suniso.

Ralph Down