OK... so why a getter in this one? All the little NEON tubes are each already sealed. http://www.tubecollector.org/zz1030.htm
John K ----- Original Message ----- From: Instrument Resources of America To: [email protected] Sent: Wednesday, March 16, 2016 8:18 AM Subject: Re: [neonixie-l] Used or NOS? As I mentioned in an earlier post today getters are flashed inside of 'VACUUM TUBES' to absorb residual 'OXYGEN' after pump down, and possibly some external R.F. heating of the internal elements to further degas. OXYGEN is extremely detrimental to 'hot cathodes', and 'hot filaments', and will destroy both quite quickly, even in small quantities. Ira. On 3/15/2016 10:23 AM, Nick wrote: Why would they have a getter? An Hg pill that needs to be vaporized, sure. But a getter? They are used to remove any stray gas molecules given off by the glass or internal structures due to heat & time. Nixies are gassed tubes by definition - a getter would be counter-productive - even during baking and initial evacuation prior to backfilling, you wouldn't use a getter. Nick On Monday, 14 March 2016 01:15:28 UTC, jrehwin wrote: Nixies are not vacuum tubes - they shouldn't have a getter. Actually, some nixies do have a getter, but it's a different kind of getter than vacuum tubes use, naturally. Most of the ones with getters use "pill" getters, often on the back of the anode, and there's normally no "getter flash" on the glass. http://www.tubeclockdb.com/images/stories/2012/in-18-bd/in-18-nixie-clock-6.jpg - John -- 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 email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/4dde53a3-7777-46ad-adda-5fbcf295fcf0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- 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 email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/56E8834B.4080303%40HUGHES.NET. For more options, visit https://groups.google.com/d/optout. -- 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/EA72B2FC753441FF8DE3EB7D3D5DE316%40compunet4f9da9. For more options, visit https://groups.google.com/d/optout.
