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[Amps] 3-500Zs Carbon vs Tantalum Plates; Outgassing; Gettering

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Subject: [Amps] 3-500Zs Carbon vs Tantalum Plates; Outgassing; Gettering
From: Patrick Barthelow <apolloeme@live.com>
Date: Mon, 26 Apr 2010 17:34:04 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Folks:

 

I have a very old but healthy Drake L4B with the gray solid carbon plates, with 
flutes oriented horizontally.  I also have used, more often, the 3-500Z amps 
with the tantalum plates, with vertical flutes.  Do both kinds of 3-500Z have 
the same kind of gettering, degassing process, in which, by heating the plate 
(the tantalum plates to show much red color) and less so the carbon 
plates...you burn off residual or leaked gas contamination inside the envelope?

Best Regards,   
73, de Pat Barthelow AA6EG
 
Arecibo  Video Tours: 
http://www.youtube.com/watch?v=vicxDnn6LEY
http://www.youtube.com/watch?v=7rFeXsVz8hE&NR=1 

"The most exciting phrase to hear in Science, the one that heralds 
new discoveries,  is not "Eureka, I have found it!"    but:"That's funny..."  
----Isaac Asimov




                                          
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