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Output Voltage vs. Firing Rate (fwd)


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From:  Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent:  Monday, August 10, 1998 5:51 PM
To:  Tesla List
Subject:  Re: Output Voltage vs. Firing Rate (fwd)

Hi Greg, John, all,

> From:  lod-at-pacbell-dot-net [SMTP:lod-at-pacbell-dot-net]
> Sent:  Sunday, August 09, 1998 3:54 PM
> To:  Tesla List
> Subject:  Re: Output Voltage vs. Firing Rate (fwd)
> 
> FutureT wrote:
> 
> > > My old coil 'coalesces' at around 1500RPM, or 150BPS.  However
> > > the Electrum coil does so much earlier, around 110 to 120BPS.
> > 
> > > Perhaps this is due to a squared/cubed relationship in the
> > > surrounding ion cloud, or in the arc itself, where doubling the
> > > scale increases the surface area by 4, but the volume by 8.
> > > This would slow the dissipation of both the ion cloud and arc.
> > 
> > > This is good news if true, for it would increase the upper limit
> > > on the maximum practical size of a Tesla Coil.
> > 
> > > -GL
> 
> [snip]
> > I would guess that if you used a different ROC
> > toroid, the coalescence would occur at a different break rate.  I think
> > if your main tank capacitor was of a different size, this too might
> > affect the coalescent break rate.
> 
> Do you have a theory as to why ROC or Cpri might affect it?
> -- 
> 
> 
> -GL
> www.lod-dot-org

    In his early writings, Tesla speculated that each streamer one 
sees in a shot reflects a cycle of oscillation. We know now with the 
benefit of some good instrumentation that this is simply not true. 
The air ionizes simultaneously on many fronts. The other night for 
example, I scoped about twenty significant cycles of Fr but at 2.1J
with the terminal I was using saw no less than four simultaneous 
streamer roots with a multitude of feathers radiating away from each 
one. The streamer roots were emitted from "favourable points" on the 
terminal (a cube with rounded corners). They were all emitted from 
the top as well. Reducing Ep from that point reduced the number of 
streamer roots to one until the system no longer could break out. That 
one streamer at a much reduced output level was more powerful than 
any of the individual multiple streamers at the higher energy level.

Malcolm