Re: Win tesla

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Allan,

Here's something for you. A 12kv NST is ~17kVp. So, shoot for that range using
the North equations provided in previous post and adjust the total gap distance
for each electrode size. In the following table, I simply adjusted the total
gap distance to attain ~16.5kv. In any case, whatever you are looking to shoot
for (arc voltage), the North equations will get you in the ball park. In the
cases below, electrodes are assumed the same size and spherical in shape, but
would be close for pipe gaps. Because there are other considerations within the
gap environment, they are only ball park figures.

(fixed width font)

        Electrode   Electrode   Per Gap    Total Gap    Arc        Volts
Case     Radius"     "Gaps"     Distance"  Distance"   Voltage    per inch    
----    ---------   ---------   --------   ---------   -------    --------
  1       0.125         8         0.125       1.00      16,535     16,535
  2       0.1875        8         0.05        0.40      16,578      6,631
  3       0.25          8         0.04        0.32      16,495      5,278
  4       0.5           8         0.033       0.26      16,751      4,355
       
Equation used:   arc voltage = 3000000*4*d/(d/r+1+sqrt((d/r+1)^2+8))
d = total gap spacing (meters)
r = electrode radius (meters)

Convert d and r to meters for equation.
inches to meters = inches/39.37
meters to inches = meters * 0.0254

Note case 1 has a high volts/inch value when r is small compared to d. 
Note case 4 (1" diam) might be better calc'd as a plane-plane gap (small d, big
r).
Note 8 "gaps" = 9 electrodes.

Take care,
Bart


Tesla list wrote:

>
> Original poster: "Allanh by way of Terry Fritz
<mailto:twftesla-at-qwest-dot-net><twftesla-at-qwest-dot-net>"
> <mailto:allanh-at-starband-dot-net><allanh-at-starband-dot-net>
> 
> I originated this topic. I still think there is a problem with the WinTesla
> program, but it seems only Bart has understood my message. WinTesla states
> the answer in
> "in/gap", and for a 12000 Volt NST in gives an answer of
> " 0.178 in/gap" for 8 gaps. This number yeilds a total gap distance of 1.424
> inches, which is far too large. On the other hand, a single gap of 0.178
> inches is too small. I think you see my point.
> 
> Thanks, Bart,
> 
> allan
> 
> ----- Original Message -----
> From: "Tesla list" <mailto:tesla-at-pupman-dot-com><tesla-at-pupman-dot-com>
> To: <mailto:tesla-at-pupman-dot-com><tesla-at-pupman-dot-com>
> Sent: Monday, October 21, 2002 4:27 PM
> Subject: Re: Win tesla
> 
> 
> msnip....
>>
>>      
>>>
>>> <mailto:allanh-at-starband-dot-net><allanh-at-starband-dot-net> I think we have
gotten off
>>> track from my original question. The question concerns the gap size for use
>>> with a TC using various transformers. Given the fact that a 12 Kv NST can
>>> barely jump a 1/2 inch gap, why does the WinTesla program reccomend 1.43
>>> inches? If the gap       
>>
>

Msnip...