Re: Surge protectors as silent spark gaps

• To: tesla-at-pupman-dot-com
• Subject: Re: Surge protectors as silent spark gaps
• From: Bob <misiura-at-nccoast-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Thu, 20 May 1999 16:59:12 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Marco,

I have been using a string of Victoreen SGCA-2500 spark gaps with
excellent results.  The rating is for 2,500 volts and 100 Joules.  They
are very quiet. It takes eight of them in series, for 10,000 volts.  The
quenching is outstanding.  My cap is only .008 mfd . . .  I don't know
how they would do with a larger cap.

Performance is way better than a forced-air, cylinder gap.

All Electronics is selling them (used) for $1.20 each.

Regards
bob
Tesla List wrote:
> 
> Original Poster: "Marco Denicolai" <Marco.Denicolai-at-tellabs.fi>
> 
> I have been using for several hours a 350 V small surge protector (small
> cylinder with a transparent window) to discharge a 0.1 uF capacitor
charged by
> my switching power supply. Charging voltage was about 300V and pulse
repetition
> rate was about 70 Hz.
> 
> The nice thing is that the surge protector didn't break or even get sligthly
> warm: it was directly in parallel to the capacitor (no series inductance or
> resistance). And it was EXTREMELY silent (I could hear nearly no sound at
> all!).
> 
> That makes me to believe that this kind of devices could be used in a long
> string as a static silent spark gap. Anybody has experienced with that?
> 
> MMSG = Multi Mini Spark Gaps ????

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