Antonio,
I understand the first part of what you are saying with the energy transfer
(which I understand to come from the very tight coupling of L1 and L2).
However, when we look back several decades at what Tesla Coil hobbyist did
from the time of Tesla's death until the 70's or 80's, many of the
secondary coils had horrible aspect ratios (small diameter and VERY tall,
which we now call candlesticks). The result was poor performance, and were
designed completely opposite of Tesla's CSN coils with with aspect ratios
of 1:1 or 1:2. Today we seem to have settle on 1:3 - 1:4 for our coils. Is
that better, or a compromise?
But to your statement, " Without losses considered the maximum output
voltage with two or three coils, with the same primary capacitor and total
load capacitance, is the same." I have to ask, if that is true, then how
many turns of wire is needed on the final resonator (L2 or L3)? How much
inductance is needed in any coil to produce high voltage? As a community I
think we have settled on 1,000 turns (+/- 200 turns).
So if we continue to stick to these aspect ratios and parameters and employ
them in the typical magnifier setup, then yes, I would expect performance
to be similar. But I believe with magnifiers (L1, L2, and L3) can and
SHOULD be constructed to 1:1 aspect ratios. I realize you have a LOT of
real world magnifier experience...I hope to get there too some day!
Here is an interesting video. That green pole on the left is the secondary!
Now I believe this one was constructed for this experiment and not made to
produce the normal streamers...but still interesting.
https://youtu.be/A6Tc6Hj4cas?t=1m37s
Thanks,
~Dan
Kansas City area
On Thu, Aug 23, 2018 at 6:57 AM, Antonio Queiroz <acmdequeiroz@xxxxxxxxx>
wrote:
> Magnifiers may allow faster energy transfer, reducing the time when current
> is flowing in the lossy spark gap. With reduced energy loss the energy
> ending in the top terminal increases. Without losses considered the maximum
> output voltage with two or three coils, with the same primary capacitor and
> total load capacitance, is the same.
>
> Antonio Carlos M. de Queiroz
> Rio de Janeiro, Brazil
>
> On Tue, Aug 21, 2018, 9:56 AM Daniel Kunkel <dankunkel@xxxxxxxxx> wrote:
>
> > When thinking about a 3 coil system, where the third coil is free to
> > resonate, what is the best way to maximize the voltage gain?
> >
> > If we follow the Colorado Springs oscillator, we would use coils with an
> > aspect ratio of 1:1 with a large space between the winding. IIRC the
> space
> > winding Tesla did was to reduce inter-turn arcing (due to the poor
> > insulation qualities of the gutta-percha insulation), as well as an
> attempt
> > to reduce the self capacitance of the coil.
> >
> > So as best I can theorize, you should:
> > -Identify what inductance and top load you need to achieve the desired
> > frequency
> >
> > Then:
> > -minimize the self capacitance of the coil
> > -minimize the DC ohms of the coil
> >
> > So to that end, are they any easy to use and accurate calculators that
> are
> > available? JavaTC I believe is accurate, but the user interface is
> lacking
> > and not really easy to make these changes to aspect ratio, wire diameter,
> > and spacing easy or quick. DeepFriedNeon is great, but I am unsure of its
> > accuracy.
> >
> > ~Dan
> > Kansas City area
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> >
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