In Reply to: RE: LOL ! posted by gusser on January 28, 2013 at 17:44:17:
...Eric Barbour discusses the ridges or "dams" in tube bases in his article on the 6550 and KT88 in issue #6 of Vacuum Tube Valley (winter, 1997). On page 22, column 3, paragraph 1 he states "Thanks to the large low-loss base with molded-in dams between the pins to discourage leakage currents, the 6550 was rated for 600 volts on the plate and 400 volts on the screen." I don't believe VTV back issues are on Millett's site and you may not consider Barbour an authority (he provides no references) but it's in writing and was published.
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Follow Ups
- I should probably stay out of this but.... - Steve O 18:34:11 01/28/13 (3)
- Eric Barbour was THE designer for Svetlana for years, he IS qualified~nT - Cleantimestream 20:28:48 01/29/13 (0)
- THANKS ! - unclestu 19:34:36 01/28/13 (0)
- RE: I should probably stay out of this but.... - gusser 18:46:27 01/28/13 (0)