Re: additional transformers [rolled caps]

From: 	Bert Hickman[SMTP:bert.hickman-at-aquila-dot-com]
Reply To: 	bert.hickman-at-aquila-dot-com
Sent: 	Tuesday, August 05, 1997 2:19 AM
To: 	Tesla List
Subject: 	Re: additional transformers [rolled caps]

Tesla List wrote:
> From:   Robert W. Stephens[SMTP:rwstephens-at-headwaters-dot-com]
> Reply To:       rwstephens-at-headwaters-dot-com
> Sent:   Monday, August 04, 1997 10:05 PM
> To:     Tesla List
> Subject:        Re: additional transformers [rolled caps]
> >
> > Do you advocate using several serial connected stages in the one, rolled
> > poly cap or several separate caps connected in series?
> >
> > Peter E.
> >
> Peter,
> I'm no *expert* on homemade capacitors.  There are a number of
> coilers on this list who *are* experienced in this art enough to be called
> experts.  In my opinion though I think placing a number of caps in
> the same container all in series would be the way to go because in
> doing so you reduce interconnection leadlength and help lower the ESL
> of the cap which is what you desire in a pulse cap.  I have thought
> about schemes employing flat stacking of poly and foil which can give
> series capacitors all in one package.  Perhaps someone out there has
> tried this and can chime in here.
> rwstephens


See http://www.funet.fi/pub/sci/electrical/tesla/pictures/hickman

and files cap1.jpg - cap4.jpg for pictures of a pair of flat plate caps
which use this approach. Each cap has 4 equal secions connected in
series for a total of 128 mils of LDPE. These caps were "overdesigned"
for use in a 20 KV pig-driven system. Like Timex, they've taken a
lickin' and they keep on tickin'... 

-- Bert H --