Re: Tesla Coil Power Calculations

Hi Dr R.,

> Original Poster: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net> 
> to: Terry, Malcolm
> The ionization energy is rather low as compared to the energy lost in heat
> and light.
> Regards,
> Dr.Resonance.

Recombination of ions is responsible for the light and heat emission 
isn't it? I was simply suggesting a mechanism (which I deduced 
through observing the linear primary ringdown on the scope) which 
explains the behaviour of the gap. I wasn't trying to put the 
individual loss "components" into individual categories.
     BTW, some further thought suggests that if there is a lossy 
element in the primary such as braid, primary current is reduced 
which in turn reduces the gap loss. It is ironic to think that 
eliminating losses in one part of the primary (e.g. by 
replacing braid with piping) increases the losses in the gap! I said 
it once before and I'll say it again - the gap is a monster, albeit a 
useful one IMHO.


> -----Original Message- - - - - 
> From: Tesla List <tesla-at-pupman-dot-com> 
> To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com> 
> Date: Monday, August 02, 1999 4:26 AM
> Subject: Re: Tesla Coil Power Calculations
> >Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>
> >
> >At 10:20 AM 8/2/99 +1200, you wrote:
> >>Hi Terry,
> >>
> >>Consider that with a close to 90% reversal in the first primary half
> >>cycle of oscillation, gap ionization reaches a maximum. As ions don't
> >>disappear all that quickly, the reducing gap current beyond that is
> >>causes far less losses than one might think if one assumes that Rgap
> >>follows primary current. I'm suggesting that Vgap drops to a low in
> >>the initial 1/4 cycle and pretty much stays there until the end of
> >>primary ringdown. If this does happen, then as Ip drops, so does Pgap.
> >>
> >>Regards,
> >>Malcolm
> >>
> >
> >Hi Malcolm,
> >
> > www.peakpeak-dot-com/~terryf/tesla/misc/M8-1.jpg
> >
> > Has a scope capture of the voltage and current across the gap of a primary
> >circuit (no secondary in place).  It shows a rather large voltage across
> >the gap initially and then a rather steady voltage waveform despite the
> >diminishing current after that.  This would tend to show exactly what you
> >are suggesting!
> >
> >Cheers,
> >
> > Terry