40MHz Spark Gap Behavior

• To: "'Tesla List'" <tesla-at-pupman-dot-com>
• Subject: 40MHz Spark Gap Behavior
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Wed, 15 Apr 1998 09:10:50 -0500
• Approved: tesla-at-stic-dot-net

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From:  L.Robertson [SMTP:LWRobertson-at-email.msn-dot-com]
Sent:  Tuesday, April 14, 1998 12:39 AM
To:  Tesla List
Subject:  Re: 40MHz Spark Gap Behavior

Hi Terry, this is really great stuff.

Last year while using my home rolled capacitor
I was complaining about huge 5 Mhz oscillations
just like you describe, right at the beginning when
the gap fired, many times bigger than the 107 kHz
resonance.

I just remeasured the spike, but am now using
very low inductance Maxwell caps - 0.05 uH. The
rather messy looking spike frequency is now at
115 Mhz., measured with a Tektronics 2467B - a
400 Mhz analog scope with screen intensifier- good
for this sort of thing.

Lead lengths, primary and secondary are basically
unchanged.

Is it possible you are seeing the caps themselves
ringing?

Just a thought
LR
  

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