How I envied a quad of Sovtek 2A3s (in a WAD2A3PSE) blue glow. Ah, how I wanted a blue glow myself. That was a long time ago and sometimes I find a haze here and a bit of a glow there - Hooray for mercury vapour rectifiers; they glow!
But when a 60 or so year old valve begins to glow blue around the top of the anode, sometimes swirling in time to the rhythm where no glow has er, glown before, (James T Kirk) I can't help thinkig this is bad news.
'gassy' ?
It is, isn't it???????
Blue Glow
-
andrew Ivimey
- Social Sevices have been notified
- Posts: 8318
- Joined: Mon Jun 11, 2007 8:33 am
- Location: Bedford
#2
Possibly, what does the getter look like?
How are the voltages around it, I would expect grid current if its starting to get gassy.
How are the voltages around it, I would expect grid current if its starting to get gassy.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
-
andrew Ivimey
- Social Sevices have been notified
- Posts: 8318
- Joined: Mon Jun 11, 2007 8:33 am
- Location: Bedford
#3
These are things that can be checked, Nick. Thanks