[Prev][Next][Index][Thread]

Re: correction factor for paper




From: 	Michael Smith[SMTP:md.smith-at-usa-dot-net]
Reply To: 	md.smith-at-usa-dot-net
Sent: 	Tuesday, July 29, 1997 11:08 AM
To: 	Tesla List
Subject: 	Re: correction factor for paper

Hello Michael, 

Mmmmm, I am responding to my own post. Go figure.

Thinking about my question of yesterday, I come to realize that of course
the dielectric constants would not be additive. They should be 1/(1/k1 +
1/k2).

But I am still interested in hearing what others' experiences have been
with paper. I just received a 74lb roll of polyethylene that is 20" wide
and 8mil. 

Michael

----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
> Subject: correction factor for paper
> Date: Monday, July 28, 1997 10:58 PM
> 
> 
> From: 	Michael Smith[SMTP:md.smith-at-usa-dot-net]
> Reply To: 	md.smith-at-usa-dot-net
> Sent: 	Monday, July 28, 1997 1:48 PM
> To: 	tesla list
> Subject: 	correction factor for paper
> 
> Hi all, 
> 
> Does anyone know what factor to apply to the plate capacitor formula to
> account for 30 lb kraft paper impregnated with oil between all layers
of
> the capacitor? 
> 
> Or should I just add the dielectric constants of the paper to the
> polyethylene in the fomula and adjust the distance between plates?
> Something does not seem right about adding the paper constant to the
poly
> constant. They are in series with each other, but something tells me
they
> would not be additive.
> 
> It would be nice to know beforehand so I can design a value rather than
> test (and run the compression frame down) as I go. 
> 
> If the differences are insignificant, that would be nice to know too.
Who
> has experience with this?
> 
> Also, does anyone know the thickness of 30 lb kraft paper? I forgot to
> bring a piece to work to measure.
> 
> Thanks in advance.
> 
> Michael Smith
> md.smith-at-usa-dot-net
> 
>