Re: Can you have too much air through a SG? (fwd)
---------- Forwarded message ----------
Date: Fri, 13 Feb 1998 16:43:48 GMT
From: Jim Fosse <jim.fosse-at-bjt-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Can you have too much air through a SG? (fwd)
On Thu, 12 Feb 1998 22:33:53 -0700 (MST), Tesla List
<tesla-at-pupman-dot-com>, you wrote:
>---------- Forwarded message ----------
>Date: Fri, 13 Feb 1998 09:49:41 +1200
>From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
>To: Tesla List <tesla-at-pupman-dot-com>
>Subject: Re: Can you have too much air through a SG?
>> Obviously you can never have too much cooling, but can excessive
>> airflow impair gap performance? - I'll be initially running 7KV at
>> about 30mA from a conventional (i.e. not neon) transformer , hopefully
>> 9KV when I can get a microwave tranny to put in series.
>> Do I need to put a speed control on the fan?
>Mightn't be a bad idea. I have seriously degraded gap performance by
>blowing a high pressure jet of air through it but this was something
>of an extreme experiment in investigations relating to quench issues.
During my low shot rate (1 - 10 bps) experiments last week, using a 9
gap cylindrical gap, I found that I obtained my longest secondary
discharges with my vacuum cleaner blower at 20% voltage on my variac.
Above or below 20%, the secondary spark shortened.
After I return from Yosemite Nation Park, this weekend, I'll measure
the voltage across the gap to see what effect the airflow rate has on
the strike and extinguish voltages.