Re: [TCML] VTTC-tuning. John got me started ;-)

["Dex Dexter" <dexterlabs@xxxxxxxxxxx>]

Yes ,you understand me now.
The problem with this can be that current distribution prior and after spark breakout across secondary isn't the same.
That's the capacitance  spark loading effect.
That will affect more tesla coils with small toroids but big sparks.
We can measure bottom current and make the estimation  only.

Dex
   

--- bartb@xxxxxxxxxxxxxxxx wrote:

From: bartb@xxxxxxxxxxxxxxxx
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Cc:
Subject: Re: [TCML] VTTC-tuning. John got me started ;-)
Date: Fri, 3 Apr 2009 18:59:48 -0700 (PDT)

Hi Dex,

(hope you get this ok. My server has a problem and I'm using a backup web
mail thing to write this).

Are you talking about capturing base current waveforms and looking at the
data just before breakout? If that is the case, then yes, I agree with
you. This will eliminate everything after breakout.

Excellent! I think I understand where you are going with this. As long as
you store the data and differentiate the time at which breakout occurs
(ignoring anything after breakout), then yes, you will get a good look at
top volts in a one-shot mode of operation. Continuous operation will prove
difficult of course.

Take care,
Bart



> Hi Bart,
> No I don't think so.
> It doesn't depend on the temperature of the day,humidity,radius of
> curvature etc.
> If you consider it more it is not the formula for the prediction.
> It is formula for calculation if you know secondary base current (or given
> the current).
> That's the voltage developed across inductor.
> The only unknown thing is "L" which varies from design to design and size
> of topload.
>
> Dex

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