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Strange Spark Phenomena
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From: richard hull [SMTP:rhull-at-richmond.infi-dot-net]
Sent: Tuesday, February 03, 1998 6:21 PM
To: Tesla List
Subject: Re: Strange Spark Phenomena
At 11:07 PM 2/2/98 -0600, you wrote:
>
>----------
>From: Jim Fosse [SMTP:jim.fosse-at-bjt-dot-net]
>Sent: Sunday, February 01, 1998 9:28 PM
>To: Tesla List
>Subject: Re: Strange Spark Phenomena
>
>
>>From: richard hull [SMTP:rhull-at-richmond.infi-dot-net]
>>Sent: Saturday, January 31, 1998 6:22 PM
>>To: Tesla List
>>Subject: Re: Strange Spark Phenomena
>>
>[snip]
>
>
>>One that I like is some sort of beating associated with the gap firing
>>energy point on the AC sine. (Varying in spark systems) Another thought I
>>like might have to do with the number of beats in the decaying wave train
>>(coupling and gap related).
>>
>Richard,
> I've been doing some low break rate quenching tests today
>using a +-10kVdc supply. I've been observing the gap voltage and RF
>output. No matter what type of gap I've used, I see this type of spark
>to a grounded electrode at these low break rate; of between 1 and 10
>bps.
>
> It can't be an AC mains beat because I'm using a DC supply.
>It's not the beat envelop because I still see it when the gap quenches
>at the first beat notch. It didn't matter if I was using a 9 gap
>cylindrical gap, a 6 gap commercial gap, a pair of carriage bolts or
>my async rotary. (I just went out to the garage and double check this)
>
> Regards,
>
> jim
>
>
>Jim,
In another post in response to, I think Ed Phillips, I noted on this list
that I too had seen this phenomena off DC arc devices like VDGs. I also
note that this is why the above mentioned possibilities were not held as
rigidly firm offerings. I also offered the reasons why and yet a third
possiblity.
Richard Hull, TCBOR