In Reply to: RE: Good OP point and driver for SV811-10? posted by slownlo on July 13, 2009 at 04:21:04:
These tubes use a zirconium getter ring on the plate. That getter
is not effective at scavenging gas unless it is very hot - so you
need to run the tubes hard, near 40W plate dissipation or so.
If you run them gently, they will not last. The SV572s are even more
picky their operating conditions.
-- Jim
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Follow Ups
- Running them gently is what causes the problems. - Jim Doyle 07/13/0904:43:29 07/13/09 (1)
- RE: Running them gently is what causes the problems. - Michael Koster 08:42:28 07/13/09 (0)