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Re: Racing sparks Re: [TCML] Flashover Follow



DC,
I do think your article in the 1984 TCBA is very well written and explains the 
“why” and “how” of this phenomenon.  However, I worked diligently with JavaTC 
and was very meticulous of my physical measurements and aspects of the secondary 
prior to construction.  And in fact I posted the JavaTC results on this list 
with nary a comment. I have even gone back and measured the physical dimensions 
of my primary and secondary and JavaTC still provides the same results.  .125k 
coefficient.
230.3 kHz = Primary Resonant Frequency
14.46 % high = Percent Detuned
0 deg° = Angle of Primary
18.1 ft = Length of Wire
3 mOhms = DC Resistance
0.196 inch = Average spacing between turns (edge to edge)
1.114 inch = Proximity between coils
1.21 inch = Recommended minimum proximity between coils
15.821 µH = Ldc-Low Frequency Inductance
0.02195 µF = Cap size needed with Primary L (reference)
0.098 µH = Lead Length Inductance
59.868 µH = Lm-Mutual Inductance
0.125 k = Coupling Coefficient
0.13 k = Recommended Coupling Coefficient
8  = Number of half cycles for energy transfer at K
17.2 µs = Time for total energy transfer (ideal quench time)
There is somethig else at play here.  I seem to be missing something and I have 
not found it.  I have searched the archives for your posted parameters but to 
date have not found them.  Can you assist me in a search string that will 
produce your previously posted JavaTC recommendations? All I find are suggested 
spark gap settings. Personally, I take offence of your comment “poor design”. If 
in fact it is a poor design it could only be attributed to the use of poor 
tools.
Respectfully,
Miles




________________________________
From: DC Cox <resonance@xxxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Tue, December 7, 2010 2:53:38 PM
Subject: Re: Racing sparks Re: [TCML] Flashover Follow

The bottom line is poor initial coil design.  JAVATC can do all this work,
show us accurately coeff. of coupling for most all designs, aod racing
sparks are truly a problem of the past.

Use JAVATC, set your design to the parameters I have provided on this list
several times before, and racing sparks will go the route of drum brakes.

Dr. Resonance




On Tue, Dec 7, 2010 at 12:43 PM, Miles Mauldin <teslamiles@xxxxxxx> wrote:

> Phil,
>
> GREAT ARTICLE! Thanks for sharing. Very clear on what's happening and why,
> better yet how to avoid flashover and achieve great performance.
>
> Miles
>

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