Re: Tesla Coil toroid Size

To: tesla-at-pupman-dot-com
Subject: Re: Tesla Coil toroid Size
From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Wed, 16 Sep 1998 02:29:08 -0600
Approved: terryf-at-verinet-dot-com

Hi John,
         In another post I mentioned exactly this:

> Original Poster: "John H. Couture" <couturejh-at-worldnet.att-dot-net> 
> 
> At 05:30 AM 9/14/98 -0600, you wrote:
> >Original Poster: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> 
> >
> >> Original Poster: "John H. Couture" <couturejh-at-worldnet.att-dot-net> 
> >> 
> >> 
> >>   John F -
> >> 
> >>   I was happy to hear that someone had performed the input watts test.
> >> There are several possibilities why you did not find an increase in the
> >> input watts when you increased the toroid size. One reason could be
that if
> >> you were not using controlled sparks the varying streamers would make it
> >> difficult if not impossible to correlate the streamer energy with the
input
> >> energy (watt seconds).
> >
> >There is probably a very good reason why changing the toroid didn't 
> >change coil power - it wasn't effecting a change of BPS and it wasn't 
> >effecting a change of Ep. 
> 
> ----------------------------
>   I think we lost track of the original intent of this post. Which was when
> the toroid is increased in size AND THE SPARK LENGTHENED what was the
> increase in the input energy? An increase in spark length means an increase
> in energy other things being unchanged.
>   JHC

In the system I mentioned, there was no increase in primary energy or 
BPS. What did change was the proportion of energy stored in Vtop as 
opposed to the rest of the secondary.

 > -------------------------------
> 
> >>   When you say that the larger toroid holds more energy for fewer
streamers
> >> do you mean that the toroid is storing energy from more than one bang? As
> >> you know I mentioned this in a past post and there were so many members
> >> that felt this was impossible they almost convinced me that I was wrong.
> >> However, it may be that energy is stored in the electric field
surrounding
> >> the coil but not in the toroid.
> >
> >It would be a good idea to get an oscilloscope onto it and see for 
> >yourself regarding the (lack of) cumulative energy with successive 
> >bangs. The evidence is unequivocal.
> >
> >Malcolm
> >
> -----------------------------
> 
>   How do you measure the cumulative energy between bangs?
>   JHC
> -----------------------------

Just watch the flat line on the scope in between primary bangs.

Malcolm