Re: Racing sparks Re: [TCML] Flashover Follow

[DC Cox <resonance@xxxxxxxxxxxx>]

too much typing for me now ---- neuraphy in hands.

DC




On Wed, Dec 8, 2010 at 5:01 AM, Miles Mauldin <teslamiles@xxxxxxx> wrote:

> 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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>
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