Re: [TCML] SSTC Coupling

["Dex Dexter" <dexterlabs@xxxxxxxxxxx>]

Steve,I don't have anything better but quite probably Rspark is considerably lower for SSTCs than for impulse operated tesla coils-VTTC excuded.
Not just becouse of obviously lower SSTC voltages but their continuous excitation which allow output spark to attain state of equilibrium (and lower voltage gradients in a spark channel).


Dex  

--- steve.ward@xxxxxxxxx wrote:

From: Steve Ward <steve.ward@xxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Subject: Re: [TCML] SSTC Coupling
Date: Tue, 27 Oct 2009 15:31:36 -0500

Dex, do you have a better 'Rspark'???

Terry Fritz tried to characterize the corona impedance on a CW - SSTC at one
point, but i dont recall if he determined it to be different than the 220k
that he characterized for disruptive sparks.  Recently ive worked on
non-linear spark models that give much better results in my DRSSTC
simulations... i may open a discussion on this once i get a better feel for
what im doing and get more measurements on a real system for direct
comparison.  But really, there seems to be good evidence that would suggest
the impedance of a spark will change with the voltage, generally the
impedance will go down as the voltage applied to it goes up.

I think Greg is probably more interested in gaining insight to the behavior
of these systems, whether or not the figures are absolutely correct.  You
can still learn from simulation and variation of parameters even if your
parameters are "wrong".

Steve

On Tue, Oct 27, 2009 at 2:08 PM, Dex Dexter <dexterlabs@xxxxxxxxxxx> wrote:

> Why do you think  Rspark = 220 kOhm is a realistic figure for SSTC ?
>
> Dex
>
>


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