From: Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Tuesday, June 23, 1998 12:34 AM
To: Tesla List
Subject: Re: rolling caps
> From: Kevin Wahila [SMTP:kevinw-at-stny.lrun-dot-com]
> Sent: Monday, June 22, 1998 7:22 AM
> To: tesla-at-pupman-dot-com
> Subject: rolling caps
> from an old message.....
> "The second problem, rolling the capacitor consistently is necessary
> because you have to roll it up first, mark where the connections go,
> unroll it, put the connections on it, and roll it back up. I use a piece
> of PVC pipe with a slot cut in it. I put the end of the aluminum plate
> and plastic sandwich in the slot before rolling it up. I use hose clamps
> to squeeze the pipe down so that it grips sandwich better. Once I have
> the pipe on the end, I roll the thing up with the pipe in the middle.
> If you hold the pipe in something such as a vice or lathe chuck, you can
> roll up the capacitor, mark it, unroll it, and re-roll it so that the
> marks line up properly."
> is it bad to just make the connections, one on the end of one plate and one
> the oppostie end of the other plate and roll it once?
The best caps have foils extending out each side and simultaneously
connected. Otherwise you have a rather large distributed series
inductance and resistance path the current has to traverse.