Re: [neonixie-l] OT: Looking for folks interested in 3l01i CRT discussion
@Pete - Does the phosphor show any signs of burning when the tube is off ? Maybe the static pattern of the clock-face is the problem. I dont know much about phosphor degradation, but I cant help wondering if it's not 100% cumulative. For example, if one section of the tube is illuminated at 10% duty-cycle and another section at 100%, perhaps the 10% duty-cycle section might last *more* than 10X longer than the 100% due to heating or other effects. -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/7d037935-5cae-4c85-8207-5204f3df30dc%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] z568m tubes starting to fail
On Tuesday, May 15, 2018 at 3:42:10 PM UTC-4, christopher helps wrote: > > I have realised that i must have plugged the tubes into different holders > so the hours went into the minutes etcdoes it matter if an hour nixie > is poisoned as it only needs to show three digits?..pic attached > Is that the Nixie version of the clockspider I see lurking behind? -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/bd7b81c4-b50a-42ce-8737-77ce85820ac2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] z568m tubes starting to fail
So the hour tube is poisoned on the digits that it doesn't normally display? That could explain it as they would have sat unused for a long time, and I think that running those digits at a higher current for a while would clear them up. But to answer your question: No it doesn't matter - i.e. it won't hurt the tube. On Tuesday, May 15, 2018 at 3:42:10 PM UTC-4, christopher helps wrote: > > I have realised that i must have plugged the tubes into different holders > so the hours went into the minutes etcdoes it matter if an hour nixie > is poisoned as it only needs to show three digits?..pic attached > > On Tuesday, May 15, 2018 at 8:08:29 AM UTC+1, christopher helps wrote: >> >> Its failing on certain parts of certain numbers. mainly 7,8,9 .i will >> post a pick later >> >> On Monday, May 14, 2018 at 10:53:03 PM UTC+1, gregebert wrote: >>> >>> Are the tubes fading uniformly, or just in specific locations on the >>> cathode surface ? If it's the entire cathode , I would check the anode >>> supply voltage and also the current-draw on good vs bad tubes >>> >> -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/058113b8-896b-4c68-8ee9-561a468485d7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Re: 26 In18 Tubes
Hi Tony, I see what you are saying now that I am at a PC. Is there another shipping provider that would work better internationally? I am happy to ship with whoever. My plan was to use a Flat Rate box for domestic shipping. Jeff On Monday, May 14, 2018 at 10:29:57 PM UTC-7, Tony Adams wrote: > > That's interesting - so you have them listed as US only and didn't > know that ebay are offering them to the UK (and other countries) via > their GSP?. > > I see '$32.64 International Priority Shipping to United Kingdom via > the Global Shipping Program'. > > They have a reputation for destroying anything that looks like it > 'contains Mercury' usually vintage vacuum tubes. In this case though > they'd be correct as you can see the small Mercury 'pill' in a wire > spiral at the tube base. > > Tony. > > > On Mon, 14 May 2018 22:16:09 -0700 (PDT), you wrote: > > >I don’t follow your statement? Are you suggesting another shipping method > and opening up to international bidders? I have locked down to domestic > shipping only. > -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/32f6c9fc-cb58-440e-8ae4-bf24066a14b7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] OT: Looking for folks interested in 3l01i CRT discussion
> I just bought a dozen 3l01i tubes from Yuriy and if there is anyone in this > group who wants to start a side discussion to share knowledge, send me a > private message and I will start a new google group. I'd send you a private message, but I'm not sure how... In any case, I'm interested. I have a few of these CRTs (of various vintages, the electron gun has been redesigned over time). I'm also curious whether the lifetime can be improved by changing the operating point (modifying the ratio of accelerating voltage versus beam current, while keeping similar brightness and spot size) like with magic eye tubes (detailed in the paper "Degradation of ZnS:Cu,Au,Al phosphor powder and thin films under prolonged electron bombardment"). I suspect it's not a surface layer phenomenon like in the eye tubes (since the phosphor is viewed from the opposite side that the electrons strike, and it's so thin), but it's worth a try. - 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/096ACE39-755D-4FA9-9F3D-47D5B374E3F4%40mac.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Ever seen this?
David, out of curiosity did you ever get around to making the finished product mentioned on the page? - Aaron -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/d6ff0c6a-143f-47f7-b857-172335d99084%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Ever seen this?
I'd like one. Those would be a drop-in replacement for the 3LO1 in my clock - just a bit smaller. On Monday, May 14, 2018 at 12:08:17 PM UTC-7, nixiebunny wrote: > > I made a little tiny scope clock with this CRT back in 2001. > http://www.cathodecorner.com/sc60.html > > I have collected a few dozen of these tubes, if anyone's interested in > this gizmo. > > > -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/ebc3c40c-17dc-4c94-b01e-ae60e960ba09%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Re: OT: Looking for folks interested in 3l01i CRT discussion
I don't know - it's a mystery. I checked everything very carefully, including the heater voltage (with a true-RMS voltmeter, since the driving waveform isn't a sine wave), in case I was overheating the cathode. I have a few more tubes, but when the second one failed like the first I put the clock away. Maybe I should get it out again and sacrifice another tube just in case. I've seen a lot of tubes, but I've never seen any with such a thin phosphor coat as these. Usually they're white and opaque. These are gray and translucent. -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/1596f0fd-ebda-4ee5-9243-d3a051f5ffeb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] z568m tubes starting to fail
Its failing on certain parts of certain numbers. mainly 7,8,9 .i will post a pick later On Monday, May 14, 2018 at 10:53:03 PM UTC+1, gregebert wrote: > > Are the tubes fading uniformly, or just in specific locations on the > cathode surface ? If it's the entire cathode , I would check the anode > supply voltage and also the current-draw on good vs bad tubes > -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/12b0d46b-5686-40ad-be6e-6c49d6a8eb9a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
