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[TowerTalk] FW: Polyphaser failure mode

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Subject: [TowerTalk] FW: Polyphaser failure mode
From: "Matt" <maflukey@gmail.com>
Date: Thu, 26 Jun 2014 22:34:19 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 6/26/2014 12:07 PM, Rick Stealey wrote:
> doesn't the gas tube just conduct for a few microseconds and go back to
life as normal?

With respect to the question about "go back to life as normal":

GDT manufacturers product data typically rates the number of shots for a
given tube based on the maximum surge current passing through the tube.  For
example, the popular Littlefuse CG3 series are rated for 10 shots at 5kA or
1 shot at 10 kA.   I recall reading somewhere that the relationship is not
at all linear.   The surge current seen by a GDT is a function of a whole
lot of variables, of which strike current and the network of impedances for
"all" dissipation paths play an important part. 

Matt
KM5VI



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