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RE: THOR: First observations on streamer formation (try II)



Original poster: "John H. Couture" <couturejh-at-mgte-dot-com> 


Gerry -

My equation and John Freau's equation use different variables. My equation
is spark length vs voltage and JF's is spark length vs wattage. However,
they might be in agreement for any particular coil but I don't think this is
ever true. The main difference is that the spark length vs voltage refers to
continuous equal length sparks (controlled sparks) while JF's equation
refers to streamers in air which can be over twice the spark length of
controlled sparks.

John Couture

-----------------------------


-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Monday, March 15, 2004 10:06 AM
To: tesla-at-pupman-dot-com
Subject: Re: THOR: First observations on streamer formation (try II)


Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>

Hi John,

Thankyou for the clarification.  The word "continous sparks" also gives it
more credibility.    Would be nice if your empirical equation and JF's are
essentially saying the samething.  I'm thinking they may be.

If you want to double your spark length, the secondary voltage needs to go
up by 1.6, which means the topload dimensions need to go up by 1.6 to get
the appropriate breakout voltage.  1st order guess is the topload
capacitance would need to go up by 1.6^2.  The value for Cp would need to go
up by 1.6^2 just to keep up with the increase of Ctop.   It would need to go
up another 1.6 to get 1.6x the secondary voltage.  Now if the Cp is 1.6^3
(4.1) larger, the power must be 4.1x larger to charge.  Does seem like they
agree.

Gerry R.

  > Original poster: "John H. Couture" <couturejh-at-mgte-dot-com>
  >
  >
  > Gerry -
  >
  > The secondary voltage is in KV. The equation should read
  >
  >     Secondary KV = 65 x (inches^0.7)
  >
  > A 30 inch continuous spark would be 703 KV with Tesla coils. Streamers
for
  > this voltage could be over twice this length. In other words random 5
foot
  > streamers terminating in air could be about 700 KV. This equation is
based
  > on data from coilers in the past. Present and future data may change it.
  >
  > John Couture
  >
  > --------------------------------
  >