Re: Coupling vs secondary voltage chart

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi Bob,

At 05:57 PM 6/15/2005, you wrote:
> Hi Terry,
>
> I was very surprised how wide (0.1) the peaks of the high magic k values
> were and how shallow (5%) the dips were in between.
> In addition how smooth (<5%) the first part of the graph was.

It might be different for a different coil...  Assuming that K=0.25 is a 
very high limit due to racing arcs, the magic K values don't seem to be a 
factor.


> I don't know what assumptions have been used in the model.
> In particular how it models the distributed coupling (k) and the distributed
> nature of the secondary must effect the top voltage particularly so for
> high(0.6) coupling.

It is a purely "lumped parameter" model.

http://drsstc.com/~terrell/modeling/ScanTesla-110.pdf

That file is out of date, but you get the idea...

> I guess its a lumped model in which case for high(0.6) k 20% of input energy
> could goes in to higher modes which are not modeled.

True!!  But nobody has a coil with k= 0.6.  The program scans the whole K 
space, but past k=0.25 is not very useful in the real world.

Cheers,

        Terry




> Robert (R. A.) Jones
> A1 Accounting, Inc., Fl
> 407 649 6400
>
>
> > Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
> >
> >> within 0.1uH.  I cut the fluff out of a special optimized version of the
> > program so it could do 1000+ models/second!  441000 calculations (400
> > seconds - 1,200,000,000,000 machine cycles!) later...  Here is the graph:
> >
> > http://hot-streamer.com/temp/KvsVtop-BigCoil.gif
> >
> >
> > Cheers,
> >
> > Terry
> >
> >