# [TCML] MAX SPARK FOR FIXED VOLTAGE

Dex Dexter dexterlabs at dcemail.com
Wed Mar 11 03:50:48 MST 2009

>--- bartb at classictesla.com wrote:

From: bartb <bartb at classictesla.com>
To: Tesla Coil Mailing List <tesla at pupman.com>
Cc:
Subject: Re: [TCML] MAX SPARK FOR FIXED VOLTAGE
Date: Tue, 10 Mar 2009 19:24:17 -0700

Hi Dex,

Your question is good, but it is based on the assumption that potential
voltage equals a given spark length.
>>

No it's not!

>>

>>
The power is what
pumps the current into the spark channel (and the more power, the longer
and higher the current is available).
>>

Yes of course.
But the point is that there also must be a maximum limit in the most favourable
conditions for spark growth for fixed voltage level.

Dex

Dex Dexter wrote:
> I have a good question I don't know answer to.
> QUESTION:
> What is aproximately maximum spark lenght possible for a given output voltage Tesla system generates?
>
> Regardless of the efficiency,how long spark can be produced by a Tesla-type impulsive devices with voltage levels:
> 1) 100 kV
> 2) 200 kV
> 3) 300 kV
>
> Can a high power impulse source,like a Tesla transformer,put out a 10 feet long spark with 'only' 100 kV voltage peaks?
> To accomplish that it is free to use any power input level,any size and shape of  a terminal capacity,any firing rate wanted,andthe best high frequency excitation waves mix.DRSSTC,VTTC,etc.
> The only limiting thing is not to exceed 100 000 V terminal potential.
> Supposing a normal atmosphere enviroment is that possible?
> I know that in no circumstance 50 kV can close 5' wide gap unless directly conducting path is formed somehow,or a
> strong external ionization occurs ,like exposure to a flame,extremely powerful lasers,but Tesla transformers are the
> champs of 'spark pumping' and I was wondering what could be done with 100 kV.