On Tue, 17 Oct 2000 16:57:11 -0400, Tom Rauch wrote:
>Eimac and other large power grid tube manufacturers use gettering
>materials activated by filament heat or anode heat.
>
>Without that, the tubes eventually gas up and fail.
______________________________________________________________
You have me curious about something. I recently fired up my old Heath
SB-1000 after it sat idle for about six years. It was fine when put
in storage, but when powered up, the 3-500Z lit up like one of those
Radio Shack globes with the "lightning" effect. I replaced it and all
was well.
My question is, has this tube gone permanently bad or could it be
revived with carefully controlled "gettering"? I have a suspicion if
there is that much gas in there, it's gone for good. Any one have
experience of this sort?
73, Bill W7TI
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|