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RE: [TCML] Voltage - Gap
I believe that the on-time of a gap, be it static or rotary, is determined strictly by the time it takes the primary/secondary systems to achieve quench. It will be difficult to incorporate this into a program, because factors affecting quench itself are not fully understood and is dependent on streamer loading and whether streamers connect to targets.
I know that the arc observed between RSG electrodes occurs as the rotating electrode *approaches* the fixed electrode. The fact that there is an existing cloud of hot ionized gas from previous bangs probably helps make this arc longer than it might otherwise be. I think that it's unlikely however that the arc is on long enough that it will draw the arc as the moving electrode is moving *away*. Under most circumstances, the system would have achieved quench long ago, independent of mechanical alignment.
Regards, Gary Lau
MA, USA
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of jhowson4@xxxxxxxxxxx
> Sent: Sunday, January 29, 2012 4:23 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Voltage - Gap
>
> Taking this discussion more off topic and creating a new thread .
>
> I have recently been thinking a lot about how the spark behaves within the gap.
> Does anyone have any material for how far an arc can be drawn in a rotary spark
> gap.
> I am trying to write an equation to estimate this for use in my program, as it will
> help me determine the "on time" and by extension the overall RMS current of the
> primary circuit.
> >From what I understand, unless your capacitor is close to resonant with the power
> supply (like in drawing monster arcs from mots) the sparks are rather short, at least
> when compared to what you could draw just directly from the main transformer
> anyway. This has something to do with with the fact that when the capacitor dumps
> its energy threw the gap its voltage falls rapidly in an oscillating exponential decay.
> But I have not been able to quantify any it yet.
> I will do some tests when i finish my coil to get exact numbers. But has anyone
> thought about this at all?
>
>
>
> Thanks,
> John "Jay" Howson IV
>
>
> "Why thank you, I will be happy to take those electrons off your hands."
<Snip!>
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