Re: Cap Selection
Subject: Re: Cap Selection
From: Daryl Dacko <mycrump-at-cris-dot-com>
Date: Fri, 16 Feb 1996 19:52:33 -0500 (EST)
>Received: from franklin-fddi.cris-dot-com (franklin-fddi.cris-dot-com [22.214.171.124]) by uucp-1.csn-dot-net (8.6.12/8.6.12) with ESMTP id CAA21556 for <tesla-at-grendel.objinc-dot-com>; Sat, 17 Feb 1996 02:32:45 -0700
At 01:01 PM 2/16/96 +0700, you wrote:
>I was considering getting 2 .05uf 25kv caps. that way I could use them in
>or parrallel to get different values in the future. I would like to explore
>primary design, too. In addition I have several xray xfmrs 100&120kv-at-200ma.
>Maybe I could put the caps in series to form a .025uf 50kv for use with
>(only powering 1/2 leg of xfmr pri for 50kv out) With those 2 caps I could
>few stones with a couple birds. What do you guys think?
The only downside I can think of is that you might need twice the turns in
since your total capacatence will now be half as large. This means higher a
which usually means lower Q, or a much larger primary, that might lower Q.
I should still make one heck of a system !
Are those X-ray transformers rated for continious duty ? I had one years
ago, that was
only rated for pulse duty, which I found out the hard way... Had it throwing
eight foot arcs
at the top of my Jacobs ladder, before the smoke started.
>I am now getting a 240v 100a
>line run straight to it from Edison.
>Question: Will that be enough, or should I opt for more?
Wuh ! (as they say in the UP)
Well, 240 x 100 = 24 Kw
A standard 10 Kw pole pig can be run up to twice or so its Kw rateing for
short periods of
time. I'd say you have room for YEARS of experimenting with this setup. This
is what I'm aiming
>my next step (I am in the process of)is finding a pole or pt xfmr. If I
get a deal
>or get one free
>will be the determining factor as to what power level I get. Question: Am I
>thinking that I can not plan on a big one and throttling back on it, because
>have a certain amount of power running through it for it to work at all? Is
>certain percentage range of power that a particular xfmr can be used for? It
>help me in determining which way to go if I am in a certain situation of
>I have a couple of other thoughts that I would like to bounce off of
>everyone. I will
>post them separately.
> Kevin M. Conkey
The usual advice for beginners in high power coiling (like me) is a 10 Kw 15
Kv pole pig.
These pigs work well with the group buy, .025 uf 20Kv caps.