Measuring where quench occurs

• To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
• Subject: Measuring where quench occurs
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Wed, 24 Sep 1997 23:53:08 -0500
• Approved: tesla-at-stic-dot-net

From: 	Jason Judd[SMTP:Jason.Judd-at-anu.edu.au]
Sent: 	Wednesday, September 24, 1997 11:01 PM
To: 	Tesla List
Subject: 	Measuring where quench occurs

Hi all,

I have recently been watching waveforms of my coil on a scope. The scope is
set up about 8' from the coil with a short wire on the end of the probe. I
clearly see two notches and then a very slow low amplitude decay. By
varying K the number of rings in each notch changes ( of couse ), but what
am I actually seeing here does this show that the gap is quenching after
the second notch ? I wouldn't have thought so because the secondary will
continue to ring until the energy has been disipated ?

My tests have been carried out at low power levels so far, but I found that
when I turned up the power sometimes I would see a third notch.

Do other people measure the quench by directly measuring accross the gap ?

Thanks,

Jason

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