Hello, from my experience, when I stop pumping before achieving 10E-6 torr range, the tube will have too high striking voltage and will not work well because of impurities. This pressure is on the gauge, not actuall pressure in the tube which may be an order higher. It is also specific for my pumping system, it might be different on other systems. Impurities actually have big impact on striking voltage, 10E-3 torr pressure before filling is not enough. Nick described it pretty well, no need to write more.. Just one thing - there is HUGE amount of moisture in the glass envelope which will stay here until You heat it over 150C, there is also a lot of trapped air in stainless steel, some organic stuff and so.. But the moisture makes 95% of all the impurities..
As for the auction, the price exceeded my expectations and it would be good if it stays there for some time of course ;-) But not because of my wallet.. I plan to make a documentary about how are the tubes made. I wanted to shoot it myself, but I have no time to do it.. So, I will hire a freelancer to shoot the documentary and cover the expenses from income from the tubes. Thank You! Dalibor 2015-02-12 17:49 GMT+01:00 gregebert <[email protected]>: > Ebay auction for 6 of Dalibor's tubes closed at $1397 (US) so supply/demand > market forces are going to keep these beauties out of reach from the rest of > us for awhile, and hopefully long enough that he can recover the time and > money he's invested getting this far. Congratulations are definitely > in-order and well-deserved, Dalibor. > > Someday I will bid on 4 of them.....I just need to figure out how much I'm > willing to shell-out. > > -- > You received this message because you are subscribed to a topic in the > Google Groups "neonixie-l" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/neonixie-l/9a5d2ICHZA8/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To post to this group, send email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/ab7d5f89-7669-4423-9814-b65dd464d3b1%40googlegroups.com. > > For more options, visit https://groups.google.com/d/optout. -- Dalibor Farny ---------------------------------------- phone: +420 724 321 571 http://www.daliborfarny.com FB: https://www.facebook.com/daliborfarnycom -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CA%2BnkT5rNVRmVEwEzfuzzVhJGzuxYqwbLkaFBh%3D9sEnnASWL%3DUQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
