[Amps] Supply question

[Ian White GM3SEK]

kingwood wrote:
>
>        As I recall, EIMAC' s "Care and Feeding of Power Grid Tubes" 
>says that the getter material, if any at all, is in the cathode 
>(filament) of the tube, not the anode.  It is the heating of the 
>filament, containing the getter material, that causes internal gas to 
>be ionized, emulsified, and bonded back into the metal of the anode 
>(plate) of the tube.  This is why an operator can "burn" the gas out of 
>an EIMAC tube, but can not, in tubes like the Penta Labs PL-172, which 
>has no getter material.
>
>        With this in mind, the color of the anode (plate) of the tube 
>has nothing, or very little,  to do with "getter action",

In almost every detail, that is flat-out WRONG.

The AMPS archives contain plenty of accurate information on the subject 
of getters. Simply go to 
<http://lists.contesting.com/archives//html/Amps/> and type "getter" 
into the search field.




-- 

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek