Re: Secondary winding frustration

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "RIAA/MPAA's Worst Nightmare" <mike.marcum-at-zoomtown-dot-com> 

I read somewhere a few years ago on the TCBA newsletter (I think) about a
team of coilers (pro physisicts? can't remember) that made an 8"x40"
secondary with ~7000 turns of 42 awg. They managed still to get 5 million
volts out of it with if I remember right a 15/120 supply. I take it that
higher voltage doesn't necessarily mean longer spark, but am I overlooking
something else? I don't think they mentioned the output length, but 5MV is
hard to picture short.
  What if I keep the primary inductance high and add a bigger topload? This
was my original idea, but was thinking that adding a breakout point reduces
the effective capacitance, or does it do the equivelent of making it a big
leakier capacitor? Can't test this without my scope and kinda chicken to try
since it's not a robust tube unit.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, January 03, 2004 11:51 AM
Subject: Re: Secondary winding frustration


 > Original poster: FutureT-at-aol-dot-com
 >
 > In a message dated 1/2/04 11:17:37 PM Eastern Standard Time,
 > tesla-at-pupman-dot-com writes:
 >
 > >In the pursuit of ever longer sparks (and for a challenge) I'm building a
 > >hand held TC (a la BH-10 vacuum tester only bigger) with a high surge
 > >impedence to lower sync rotary gap losses
 >
 >
 > I can't see any advantage to using over 1400 to 1800 turns of wire
 > on the secondary.  Past a certain number of turns (inductance
 > actually), the gap losses decrease only slightly, but the wire
 > losses increase by a lot.  I suggest using thicker wire and
 > using 1500 turns or so.
 >
 > John
 >
 >
 >