Re: mmc testimonial

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi,

The "good caps" are solid foil - metal film - solid foil.  The "bad caps"
are metal film - metal film - metal film.  

Having solid foil is needed to attach to the end plates.  If the caps are
all metal film they burn out at the end plate to film connection.  The
inner layer of metal film is fine and is what provides the self healing.
The caps Malcolm describes sound perfect and should be fine.

Cheers,

	Terry


At 12:31 PM 2/19/2002 +1000, you wrote:
>Malcolm, 
>
>I pulled apart one of the caps. The outer layers were made with foil, 
>about the same thickness as regular kitchen foil. However, the inner 
>layers appear to be polypropylene with a "shiny" coating that is 
>translucent. It looks like the silvery plastic bags you get computer 
>parts in.  Isn't this metallised polypropylene? 
>
>Greg Peters
>Department of Earth Sciences,
>University of Queensland, Australia
>Phone: 0402 841 677
>http://www.geocities-dot-com/gregjpeters
>
>
>