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Re: [TCML] Re: Spark gap Resistance



Hi Bart,

Most of this theory discussion is a bit above my head but I would have to
agree that consuming as much energy as possible in the output streamers
is the overall best approach to getting as close to first notch quenching as
practical. I think most of us are after the biggest sparks and don't really
care whether quenching occurs in the first notch or the fourth notch so
long as it occurs within a reasonble time frame that prevents the develop-
ment of a power arc in the SG.

David

----- Original Message ----- From: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Tuesday, November 20, 2007 11:23 PM
Subject: Re: [TCML] Re: Spark gap Resistance


Hi John,

It's a theory. I see this similar to drawing an arc vs initiating an arc. The only problem in reproducing the phenomenon is the reduced energy in the time frame allowed. Thus, hard to prove. It's similar to a high energy thermal channel in the spark gap.

However, just because one coil may not be as well adapted to dissipating sparks at the 1st notch doesn't mean another coil can't. I think for the typical garage coil, 1st notch quenching is rarely obtainable due to both secondary and spark gap. But, I think it can be achieved with good results if one goes to lengths. Trying to force it or trap it in the secondary is a little silly to me. Well, as long nothing dies, there may be some benefit.

There is an undeniable truth: If the secondary can release the energy, there is nothing to continue the gap and it will quench. The question is what mechanisms prevent the secondary from dissipating all the energy in a single ring up? A lot of different things and not all we can control or change.

The gap I see as simply a loss. Higher energy should be lower gap losses, increased conductivity, and higher temperatures. If there is energy remaining in the secondary to travel back across, it will and more easily at higher energy. Getting rid of the energy in the first place seems to me to the hidden key to all of this.

Take care,
Bart

FutureT@xxxxxxx wrote:
In a message dated 11/20/2007 9:38:15 P.M. US Eastern Standard Time, bartb@xxxxxxxxxxxxxxxx writes:

If the energy is quenched by the 1st primary notch, there is only a single ring up "time" for the spark channel itself. If we quench on the 2nd primary notch, the "time" of the secondary sparks are controlled by the ring up time between each spark and the energy bussed to the developed spark channels. It's not difficult to see that faster quench times may not always be preferred.

In second notch quenching, the secondary has rung up twice and produced a spark in each ring up and likely in the same channel as it is hot and ionized by the first ring up event. I expect the channel to be more conductive and possibly allow a little longer protrusion on the second ring up event.




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