Re: Coupling vs secondary voltage chart

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Original poster: Steve Ward <steve.ward@xxxxxxxxx>

Hi Terry


> >I think the rate at which the voltage is changing on the toroid is
> >more important than the overall voltage.  Low K should take a long
> >time to build up, despite that it may build to a higher voltage.  I
> >think overall the sparks will be shorter =\.
>
> Yes!  Probably very true!  But it appears one does not have to risk racing
> arcs for performance.  If K=0.25 or 0.18 the performance is probably "about
> the same".  Fascinating that the DRSSTC seems to be so "flat line" for
> output voltage.  The rough line seems to be the little bouncing off peaks
> and such as the K is varying.  T1 was 300uS.
>

I think 300uS is too long of a time to develop a long streamer.  So
really, your plots would look much different i suspect at say
100-150uS?  Could you test that out and see what it says?  In my
limited experience, i find best "long" streamer production to be had
with shorter T1's in the 100-175uS range, but then again, most of my
coils are maxed out at 200uS, after that the sparks dont grow.  Now
the question is: is that a characteristic of the streamer, or
something to do with the coupling and tank surge impedance (shaping
the current envelope)?

Steve