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Bigger secondary = longer streamers? (was Re: Anybody answering this? (Primary current and voltage effects))

Ed,

Yes, you are correct about my present situation. Maybe I can put my
questions like this:

If I keep the same tank supply, same primary capacitor, but I use a, say,
6" secondary, bigger toroid, bigger primary to keep the TC still tuned,
will I get longer streamers?

It seems to me that I need current only to properly charge quickly the
primary capacitor, but primary voltage is directly related to secondary
voltage i.e. to streamer length (forgetting about the effect of increasing
BPS). Am I right?






tesla-at-pupman-dot-com on 13.11.98 04:39:07

To:   tesla-at-pupman-dot-com
cc:    (bcc: Marco Denicolai/MARTIS)
Subject:  Re: Anybody answering this? (Primary current and voltage
      effects)




Original Poster: Esondrmn-at-aol-dot-com
In a message dated 11/11/98 7:07:12 AM Pacific Standard Time,
tesla-at-pupman-dot-com
writes:


Marco,
If I understand this correctly, you now have a 4.33" diameter coil and use
a
6.5 kv  250 ma transformer - and plan to build a larger coil and use the
same
transformer.  Do I have that correct?  250 ma is quite a lot of current
already, good supply (1.6 kva).  Increasing the voltage would certainly
help
the performance of the coil.  Most coilers use an AC supply of 10 kv to 15
kv.
In your case, I would guess you would do as well or better with a supply
that
delivers twice the voltage at half the current - test results available
from
anyone on this?
I think you would be happy with the performance of a 6.0" diameter coil
with a
.05 mfd capacitor and large toroid, 30" or 40" in diameter or larger.
As to you last question - holding the voltage constant and increasing the
current available to the primary does improve the performance of the
system,
depending on its size and current power input.  For a given size coil, I am
convinced there is a point where adding more input power results in no or
very
little increase in performance.  You can see the curve on this in your
mind:
length of output sparks vs input power.  Based on my own experinece, for a
given system, the curve changes rapidly for a while then finally almost
flattens out - and somewhere out there on the flat part of the curve is
where
the secondary burns up.
Ed Sonderman