I learned the opposite when I rolled a 1000 pf ceramic vacuum cap off the
bench onto my foot then the floor. Current flow went to maximum when
reinstalled.
Jerry W0ZD/3
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of k7fm
Sent: Wednesday, August 28, 2013 9:06 AM
To: amps@contesting.com
Subject: Re: [Amps] why a tube fails ?
I am of the belief that tube failure is directly related to the amount of
alcohol consumed by the operator while operating the amplifier.
The only tube failure I can recall being involved in was when I removed one
of the 3-500Z tubes from an amp to clean the dust out and laid it on the
workbench. Tubes are round and it rolled off the bench. Being
quick\-footed, I broke the fall with my shoe and the glass did not break.
Unfortunately, the filament did. Lesson learned. Electron flow ceases when
the filament breaks. And, no I had not been drinking.
73, Colin K7FM
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