|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
|
|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
In Reply to: Re: Blue glow inside GE 6550 posted by Robert H. on August 14, 2002 at 21:14:07:
Yes, you are right about the bombardment, but the blue glow on the electrode structure is perfectly normal and the gentle blue glow near the glass is due to the collision of ionized gas molecules with the glass - usually indicating a soft tube. Valves during manufacture have the air pumped out of them and any remaining gas is removed by the getter. Try reducing the negative bias on a tube and you will start to see this blue glow - even on hard (good vacuum) tubes. All tubes have gas to a certain degree - some glow, some don't for the same type tube.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Re: Blue glow inside GE 6550 - t1 t2 05:25:12 08/15/02 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
