[TCML] Coil Volume and Others
yurtle_t at yahoo.com
Fri Jul 30 14:40:19 MDT 2010
Or a bigger topload.
----- Original Message ----
From: Joe Mastroianni <joe at killerowls.com>
To: Tesla Coil Mailing List <tesla at pupman.com>
Sent: Fri, July 30, 2010 10:53:17 AM
Subject: Re: [TCML] Coil Volume and Others
Yes, that seems to be the case.
On my original setup with 18nf and 15/30 I needed somewhere between 16 and 17
turns. Then I changed my NST and increased to ~25nF the JavaTC calculations put
me around 12 turns. Now - if I can believe what JavaTC told me this AM - I may
have been entering my data wrong - but it's telling me only 1.5 Turns! I gotta
In any case, there are a lot of unused turns.
Of course, I am loathe to remove the "unused" turns as I spent days threading
the tubing through those polycarbonate holes...;-) Probably time for a new
On Jul 30, 2010, at 6:59 AM, futuret at aol.com wrote:
> Do you have a lot of unused turns in the primary? For example do you have 16
> but are tapped at turn # 5? If there are many unused turns, the primary will
> arc at the outer turns because of the extra voltage build up there. This is
> true at high powers.
> primary from arcing, except by keeping the variac at 1/2 or below. I've tried
> raising the secondary, to reduce coupling, just to see what would happen and
> had minimal effect. I'm wondering if 1/4" tubing spaced 1/4" in an archimedes
> spiral is just not enough width to stop the arcing at this current.
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> Tesla at pupman.com
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