Re: Richie - Garry's MMC cap failure explained.

["Tesla list" <tesla-at-xxxxxxxxxx>]

Original poster: "Jon Rosenstiel" <jonr-at-pacbell-dot-net> 


Subject: Richie - Garry's MMC cap failure explained.


> Original poster: Terry Fritz <twftesla-at-uswest-dot-net>
>
> Hi Richie,
>
> You may have hit on the exact problem.  These caps have ALL vacuum
> deposited metal film layers.  There is no solid metal foil in them.  This
> seems to be causing two problems.  The metal film does not seem to attach
> to the end caps well.  The caps that are getting hot on only one side have
> the foil breaking up at the end cap attachment.  This picture shows the
end
> cap area of a cap that had a "hot side".
>

<snip>

Geez Terry, the photos of those caps look just like my GE42l series caps,
(0.22uf at 2kV). You remember, I sent  you one to test?
I also had the same problem, (overheating at the end connection). I had to
wire 30 of them in series to keep them happy.

Jon