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Quench, Coherence etc.
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From: FutureT-at-aol-dot-com [SMTP:FutureT-at-aol-dot-com]
Sent: Tuesday, August 11, 1998 8:08 AM
To: tesla-at-pupman-dot-com
Subject: Re: Quench, Coherence etc.
In a message dated 98-08-11 00:41:21 EDT, you write:
<< ---------
> From: Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
> Sent: Monday, August 10, 1998 9:07 PM
> To: tesla-at-pupman-dot-com
> Subject: Re: Quench, Coherence etc.
> Earlier I wrote:
<snip>
> A most interesting thing was noted that suggests that optimum
> quench <> optimum sparks (also suggested in the spark lengths above).
> For the same breakout conditions, the amplitude of the waveform was
> significantly higher in the second ringup than if the system
> optimally quenched and decayed. In effect, the coil had two hits at
> the air some time apart and with still high amplitude on the second
> hit.
> In case that sounds like nonsense, the second ringup presented the
> air with a higher voltage further out in time but at the expense of
> presenting a null in between as energy ended up back in the primary.
> In effect what happened was (air streamers only):
>
> *
> *
> * *
> *
> *
> * * 1st notch quench
>
>
>
> *
> *
> * *
> * *
> *
> * * * 2nd notch quench
>
> 1st ringup time and amplitudes are identical. I have the two
> waveforms in the scope and am looking at them superimposed right now.
>
> Malcolm
> >>
Hi Malcolm, all,
I had thought of this in the past also, but I didn't follow up. It is
significant that your 1st ringup
amplitude was the same. It should be easy to determine if the 2nd
notch gives better spark outputs. (Or perhaps you have determined
this, looking at both your posts.) I've gotten about the same spark
lengths at 1st and 2nd notch quenchings, but I didn't observe my
firing voltages, ring-up amplitudes, etc, so my test didn't prove
anything :(
Interesting results, and worth more study.
Regards, John Freau