I am not a Tube expert by any means but This is supposed to be true, I run
all my metal tubes for an hour or so each months, and I suppose this also
keeps everything else good too. ( cap etc.) . I am not sure of the source of
this info, ( a mind is a terrible thing to loose!!) but I believe it is
correct, and some components of the tube off gas a few molecules of O2 and
such.
and the vacuum can never be perfect. I wonder if any one else is familiar
with this..
tom N6AJR
In a message dated 12/10/2005 7:06:24 P.M. Pacific Standard Time,
ghoffman@spacetech.com writes:
I have two observations about all this, or perhaps I should call them
questions.
First of all, I thought a tube was supposed to be pumped down to a very good
vacuum and then completely sealed. Thus there should not be gas leaking in.
It should not accumulate over time. If it does, its gone bad. Is this not
so ?
Secondly, I thought the getter was used once, when it was "fired" at the
factory. I did not believe that it was at all functional beyond that single
use. Is this not so ?
I've never read before about turning on an amp for a long time after a
period of disuse, to "clean up gas" in the tubes. Has anyone else (besides
the original poster here) ? I have heard of course about reforming the
electrolytics after a period of disuse. Could we inadvertently be confusing
these two different concepts ?
73 de Gary, AA2IZ
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