Re: Mylar sheeting

To: tesla-at-pupman-dot-com
Subject: Re: Mylar sheeting
From: Finn Hammer <f-hammer-at-post5.tele.dk> (by way of Terry Fritz <twf-at-verinet-dot-com>)
Date: Sun, 18 Apr 1999 14:07:32 -0600
Approved: twf-at-verinet-dot-com

http://www.dupont-dot-com/polyester/products/mylar/datashts.html

Get the datasheet detailing electrical properties, h32192-1.pdf.

The dielectric strength of mylar varies with thickness:
1/4 mill thick foil offers 20000 V/mill
14 mill thick foil delivers 2000 V/mill

3 mill thick foil will yield around 5000 V/mill, or 15000 Volt total,
providing a very large safety factor.
I used 2 mill. for my homewound, 20kV "porkchop", documented at:
http://home5.inet.tele.dk/f-hammer/tesla/tesla.htm

Hope this helps, finn

Tesla List skrev:
> 
> Original Poster: "Roderick Maxwell" <tank-at-magnolia-dot-net>
> 
> Can anyone tell me what the dielectric strength of mylar is per mil of
> thickness? I am building a custom made transformer and I want to use mylar as
> an interlayer insulation.
> 
> 
> 
> Frankensteins Helper
> 
>        Max