Re: [neonixie-l] IN-18 gone bad.
I don't think ZIF sockets are necessary -- too much complexity -- but a LIF (low insertion force) socket would be cool. Imagine a socket consisting of a solid round cylinder core, with spring tensioned contacts surrounding the core, that would press against the pins when the tube is placed over the core. Similar, non conducting dummy tensioned contacts could be on the opposite side of the pins, held in place by an outer ring. All contacts would be stamped concave to help position the tube. Some other mechanical retension method might be needed to secure the tube, perhaps a wire over the top like you've all seen in some equipment sockets. Who's got a 3D printer? Terry On Thursday, January 23, 2014 1:22:59 PM UTC-6, bani wrote: I would definitely pay for ZIF IN-18 sockets :) -Dan On Thu, 23 Jan 2014, John Rehwinkel wrote: I caused it because I was swapping the tubes too much. The repeated removal/insertions caused the tube to leak at the pins. I still want to rotate the tubes, but I need to come up with a surrogate socket so I can swap the tubes without stressing the pins. A ZIF nixie socket! Now that would be quite a thing! That would also dodge the usual problem in home-made sockets of having the grippers both float and exert proper tension, by moving the tensioning function elsewhere. Time to start scribbling and thinking about milling out some interesting shapes. - 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+...@googlegroups.com javascript:. To post to this group, send an email to neoni...@googlegroups.comjavascript:. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/B357E429-5E90-4449-9071-CC008D50F3D4%40mac.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/8ff4df91-d414-412e-9650-484f5e874c71%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
How about this for a ZIF design: The contacts take the form of tubes with slits cut axially all round leaving rings uncut top and bottom to form a sort of tubular cage with no roof or floor. If the top ring is twisted while the bottom one is held the tube will collapse to a hyperboloid cooling tower shape which would grip a pin. A suitable mechanism for the twisting would be an insulating collar (perhaps ceramic or hard resin) running round the top of the socket with gear teeth on the inner face that engage in either matching teeth in the top rings of the sockets or perhaps the top of the slits. So you would drop the tube in then twist the top of the socket 90 degrees or so... Some form of latching would be needed of course. Hope that makes some sort of sense... I'll try and knock up a diagram when I get to my computer as this needs getting out of my head properly now :) Cheers, Robin. On 24 Jan 2014, at 21:30, Terry S tschw10...@aol.com wrote: I don't think ZIF sockets are necessary -- too much complexity -- but a LIF (low insertion force) socket would be cool. Imagine a socket consisting of a solid round cylinder core, with spring tensioned contacts surrounding the core, that would press against the pins when the tube is placed over the core. Similar, non conducting dummy tensioned contacts could be on the opposite side of the pins, held in place by an outer ring. All contacts would be stamped concave to help position the tube. Some other mechanical retension method might be needed to secure the tube, perhaps a wire over the top like you've all seen in some equipment sockets. Who's got a 3D printer? Terry On Thursday, January 23, 2014 1:22:59 PM UTC-6, bani wrote: I would definitely pay for ZIF IN-18 sockets :) -Dan On Thu, 23 Jan 2014, John Rehwinkel wrote: I caused it because I was swapping the tubes too much. The repeated removal/insertions caused the tube to leak at the pins. I still want to rotate the tubes, but I need to come up with a surrogate socket so I can swap the tubes without stressing the pins. A ZIF nixie socket! Now that would be quite a thing! That would also dodge the usual problem in home-made sockets of having the grippers both float and exert proper tension, by moving the tensioning function elsewhere. Time to start scribbling and thinking about milling out some interesting shapes. - 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+...@googlegroups.com. To post to this group, send an email to neoni...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/B357E429-5E90-4449-9071-CC008D50F3D4%40mac.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/8ff4df91-d414-412e-9650-484f5e874c71%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/2140D6F8-D9E1-4B76-B5DE-D6EBE90F8AE5%40cqr-ltd.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
I caused it because I was swapping the tubes too much. The repeated removal/insertions caused the tube to leak at the pins. I still want to rotate the tubes, but I need to come up with a surrogate socket so I can swap the tubes without stressing the pins. A ZIF nixie socket! Now that would be quite a thing! That would also dodge the usual problem in home-made sockets of having the grippers both float and exert proper tension, by moving the tensioning function elsewhere. Time to start scribbling and thinking about milling out some interesting shapes. - 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/B357E429-5E90-4449-9071-CC008D50F3D4%40mac.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
[I learned the hard way on some of my earliest clocks regarding current limiting resistors. :S] Could you please elaborate on what you were referring to here? -- 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/ca41f8a0-5daf-4b78-b2fd-0460ec8e83bc%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
Zero Insertion Force (ZIF) (http://en.wikipedia.org/wiki/Zero_insertion_force) sockets for nixies would be SWEET! On Thursday, January 23, 2014 9:47:36 AM UTC-5, Ron Schuster wrote: [I learned the hard way on some of my earliest clocks regarding current limiting resistors. :S] Could you please elaborate on what you were referring to here? -- 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/43d4652c-f741-47b1-a914-cb55506de119%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
I would definitely pay for ZIF IN-18 sockets :) -Dan On Thu, 23 Jan 2014, John Rehwinkel wrote: I caused it because I was swapping the tubes too much. The repeated removal/insertions caused the tube to leak at the pins. I still want to rotate the tubes, but I need to come up with a surrogate socket so I can swap the tubes without stressing the pins. A ZIF nixie socket! Now that would be quite a thing! That would also dodge the usual problem in home-made sockets of having the grippers both float and exert proper tension, by moving the tensioning function elsewhere. Time to start scribbling and thinking about milling out some interesting shapes. - 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/B357E429-5E90-4449-9071-CC008D50F3D4%40mac.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/Pine.LNX.4.64.1401231122490.4378%40sasami.anime.net. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
One of the IN-18s in my Nixichron has started to fail. I don't know if it's cathode poisoning or some other failure mode. In the 10's hours position, several of the digits are not lighting completely, they are dark toward the bottom of the tube, probably the bottom 1/3 of the numeral. Sounds like cathode poisoning. This happened rather suddenly, or at least I only noticed it recently. The 1 digit is fine, and that's what is lit most of the time. The other digits only come into play during display of the GPS coordinates every 1/4 hour. As they scroll across the clock, I can see the bad digits. Yeah, cathode poisoning happens when not all the digits are used enough. I do have a couple spare tubes, but they have no hours on them. I'll try one to be certain it's just the tube. But I'd actually like to find a used tube, something with several years worth of use on it, so the brightness will be a better match. It's worth trying to depoison that one. The easy way is to swap it with one of the other digits that gets used more evenly. The quick way is to run those other digits for a bit a higher-than-normal current until they light fully again. - 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/EEEDC04F-A212-4648-A30C-58F2DC82A620%40mac.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
This is an issue that is most obvious on clocks with lots of functionality. If there are different modes/menus that display numerals on a tube that are not normally lit as part of the clock, then you'll see this. Best advice is to take full advantage of automated cathode-poisoning prevention routines. Clocks that don't have any menus, i.e. they don't ever display a numeral on a tube that wouldn't be displayed as part of the standard clock, still have this problem but it's not anywhere near as obvious. For example: If the 10-minutes tube only ever displays 0-5 in the course of being a clock and I don't have any additional menus or modes that might try to display something besides those values, then the critical poisoning of 6-9 doesn't matter to me. John is right. Try to repair the cathode poisoning if it is still fairly mild. I've had great luck in the past doing this with IN-8-2's. [I learned the hard way on some of my earliest clocks regarding current limiting resistors. :S] -Adam On 1/22/2014 5:36 AM, John Rehwinkel wrote: One of the IN-18s in my Nixichron has started to fail. I don't know if it's cathode poisoning or some other failure mode. In the 10's hours position, several of the digits are not lighting completely, they are dark toward the bottom of the tube, probably the bottom 1/3 of the numeral. Sounds like cathode poisoning. This happened rather suddenly, or at least I only noticed it recently. The 1 digit is fine, and that's what is lit most of the time. The other digits only come into play during display of the GPS coordinates every 1/4 hour. As they scroll across the clock, I can see the bad digits. Yeah, cathode poisoning happens when not all the digits are used enough. I do have a couple spare tubes, but they have no hours on them. I'll try one to be certain it's just the tube. But I'd actually like to find a used tube, something with several years worth of use on it, so the brightness will be a better match. It's worth trying to depoison that one. The easy way is to swap it with one of the other digits that gets used more evenly. The quick way is to run those other digits for a bit a higher-than-normal current until they light fully again. - 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/52DFE351.7030606%40gmail.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
You're all wrong, it's leaking gas through the pins. Sent from my iPhone On Jan 22, 2014, at 7:27 AM, Adam Jacobs jacobs.a...@gmail.com wrote: This is an issue that is most obvious on clocks with lots of functionality. If there are different modes/menus that display numerals on a tube that are not normally lit as part of the clock, then you'll see this. Best advice is to take full advantage of automated cathode-poisoning prevention routines. Clocks that don't have any menus, i.e. they don't ever display a numeral on a tube that wouldn't be displayed as part of the standard clock, still have this problem but it's not anywhere near as obvious. For example: If the 10-minutes tube only ever displays 0-5 in the course of being a clock and I don't have any additional menus or modes that might try to display something besides those values, then the critical poisoning of 6-9 doesn't matter to me. John is right. Try to repair the cathode poisoning if it is still fairly mild. I've had great luck in the past doing this with IN-8-2's. [I learned the hard way on some of my earliest clocks regarding current limiting resistors. :S] -Adam On 1/22/2014 5:36 AM, John Rehwinkel wrote: One of the IN-18s in my Nixichron has started to fail. I don't know if it's cathode poisoning or some other failure mode. In the 10's hours position, several of the digits are not lighting completely, they are dark toward the bottom of the tube, probably the bottom 1/3 of the numeral. Sounds like cathode poisoning. This happened rather suddenly, or at least I only noticed it recently. The 1 digit is fine, and that's what is lit most of the time. The other digits only come into play during display of the GPS coordinates every 1/4 hour. As they scroll across the clock, I can see the bad digits. Yeah, cathode poisoning happens when not all the digits are used enough. I do have a couple spare tubes, but they have no hours on them. I'll try one to be certain it's just the tube. But I'd actually like to find a used tube, something with several years worth of use on it, so the brightness will be a better match. It's worth trying to depoison that one. The easy way is to swap it with one of the other digits that gets used more evenly. The quick way is to run those other digits for a bit a higher-than-normal current until they light fully again. - 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/52DFE351.7030606%40gmail.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/DCC680D3-8D1C-458F-99E5-0BE23298FD8E%40earthlink.net. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
Gene, please explain how you know this is the case. Thanks Terry On Wednesday, January 22, 2014 9:30:40 AM UTC-6, Gene Segal wrote: You're all wrong, it's leaking gas through the pins. Sent from my iPhone On Jan 22, 2014, at 7:27 AM, Adam Jacobs jacob...@gmail.comjavascript: wrote: This is an issue that is most obvious on clocks with lots of functionality. If there are different modes/menus that display numerals on a tube that are not normally lit as part of the clock, then you'll see this. Best advice is to take full advantage of automated cathode-poisoning prevention routines. Clocks that don't have any menus, i.e. they don't ever display a numeral on a tube that wouldn't be displayed as part of the standard clock, still have this problem but it's not anywhere near as obvious. For example: If the 10-minutes tube only ever displays 0-5 in the course of being a clock and I don't have any additional menus or modes that might try to display something besides those values, then the critical poisoning of 6-9 doesn't matter to me. John is right. Try to repair the cathode poisoning if it is still fairly mild. I've had great luck in the past doing this with IN-8-2's. [I learned the hard way on some of my earliest clocks regarding current limiting resistors. :S] -Adam On 1/22/2014 5:36 AM, John Rehwinkel wrote: One of the IN-18s in my Nixichron has started to fail. I don't know if it's cathode poisoning or some other failure mode. In the 10's hours position, several of the digits are not lighting completely, they are dark toward the bottom of the tube, probably the bottom 1/3 of the numeral. Sounds like cathode poisoning. This happened rather suddenly, or at least I only noticed it recently. The 1 digit is fine, and that's what is lit most of the time. The other digits only come into play during display of the GPS coordinates every 1/4 hour. As they scroll across the clock, I can see the bad digits. Yeah, cathode poisoning happens when not all the digits are used enough. I do have a couple spare tubes, but they have no hours on them. I'll try one to be certain it's just the tube. But I'd actually like to find a used tube, something with several years worth of use on it, so the brightness will be a better match. It's worth trying to depoison that one. The easy way is to swap it with one of the other digits that gets used more evenly. The quick way is to run those other digits for a bit a higher-than-normal current until they light fully again. - 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+...@googlegroups.com javascript:. To post to this group, send an email to neoni...@googlegroups.comjavascript:. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/52DFE351.7030606%40gmail.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/191985dc-65bf-4a2a-ae1c-57984c742113%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
When you have a sudden performance issue, it's gas. Especially when large sections of large-area cathodes go dim. Poisoning from sputtering affects small sections and is observed over longer periods of time. I'll bet that tube will start going pink soon. Sent from my iPhone On Jan 22, 2014, at 7:41 AM, Terry S tschw10...@aol.com wrote: Gene, please explain how you know this is the case. Thanks Terry On Wednesday, January 22, 2014 9:30:40 AM UTC-6, Gene Segal wrote: You're all wrong, it's leaking gas through the pins. Sent from my iPhone On Jan 22, 2014, at 7:27 AM, Adam Jacobs jacob...@gmail.com wrote: This is an issue that is most obvious on clocks with lots of functionality. If there are different modes/menus that display numerals on a tube that are not normally lit as part of the clock, then you'll see this. Best advice is to take full advantage of automated cathode-poisoning prevention routines. Clocks that don't have any menus, i.e. they don't ever display a numeral on a tube that wouldn't be displayed as part of the standard clock, still have this problem but it's not anywhere near as obvious. For example: If the 10-minutes tube only ever displays 0-5 in the course of being a clock and I don't have any additional menus or modes that might try to display something besides those values, then the critical poisoning of 6-9 doesn't matter to me. John is right. Try to repair the cathode poisoning if it is still fairly mild. I've had great luck in the past doing this with IN-8-2's. [I learned the hard way on some of my earliest clocks regarding current limiting resistors. :S] -Adam On 1/22/2014 5:36 AM, John Rehwinkel wrote: One of the IN-18s in my Nixichron has started to fail. I don't know if it's cathode poisoning or some other failure mode. In the 10's hours position, several of the digits are not lighting completely, they are dark toward the bottom of the tube, probably the bottom 1/3 of the numeral. Sounds like cathode poisoning. This happened rather suddenly, or at least I only noticed it recently. The 1 digit is fine, and that's what is lit most of the time. The other digits only come into play during display of the GPS coordinates every 1/4 hour. As they scroll across the clock, I can see the bad digits. Yeah, cathode poisoning happens when not all the digits are used enough. I do have a couple spare tubes, but they have no hours on them. I'll try one to be certain it's just the tube. But I'd actually like to find a used tube, something with several years worth of use on it, so the brightness will be a better match. It's worth trying to depoison that one. The easy way is to swap it with one of the other digits that gets used more evenly. The quick way is to run those other digits for a bit a higher-than-normal current until they light fully again. - 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+...@googlegroups.com. To post to this group, send an email to neoni...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/52DFE351.7030606%40gmail.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/191985dc-65bf-4a2a-ae1c-57984c742113%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/550EDB1D-0929-4F51-B23B-496EEA0AC385%40earthlink.net. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
Thanks Gene -- I'll keep an eye on it and let you know. Terry On Wednesday, January 22, 2014 9:56:13 AM UTC-6, Gene Segal wrote: When you have a sudden performance issue, it's gas. Especially when large sections of large-area cathodes go dim. Poisoning from sputtering affects small sections and is observed over longer periods of time. I'll bet that tube will start going pink soon. Sent from my iPhone On Jan 22, 2014, at 7:41 AM, Terry S tschw...@aol.com javascript: wrote: Gene, please explain how you know this is the case. Thanks Terry On Wednesday, January 22, 2014 9:30:40 AM UTC-6, Gene Segal wrote: You're all wrong, it's leaking gas through the pins. Sent from my iPhone On Jan 22, 2014, at 7:27 AM, Adam Jacobs jacob...@gmail.com wrote: This is an issue that is most obvious on clocks with lots of functionality. If there are different modes/menus that display numerals on a tube that are not normally lit as part of the clock, then you'll see this. Best advice is to take full advantage of automated cathode-poisoning prevention routines. Clocks that don't have any menus, i.e. they don't ever display a numeral on a tube that wouldn't be displayed as part of the standard clock, still have this problem but it's not anywhere near as obvious. For example: If the 10-minutes tube only ever displays 0-5 in the course of being a clock and I don't have any additional menus or modes that might try to display something besides those values, then the critical poisoning of 6-9 doesn't matter to me. John is right. Try to repair the cathode poisoning if it is still fairly mild. I've had great luck in the past doing this with IN-8-2's. [I learned the hard way on some of my earliest clocks regarding current limiting resistors. :S] -Adam On 1/22/2014 5:36 AM, John Rehwinkel wrote: One of the IN-18s in my Nixichron has started to fail. I don't know if it's cathode poisoning or some other failure mode. In the 10's hours position, several of the digits are not lighting completely, they are dark toward the bottom of the tube, probably the bottom 1/3 of the numeral. Sounds like cathode poisoning. This happened rather suddenly, or at least I only noticed it recently. The 1 digit is fine, and that's what is lit most of the time. The other digits only come into play during display of the GPS coordinates every 1/4 hour. As they scroll across the clock, I can see the bad digits. Yeah, cathode poisoning happens when not all the digits are used enough. I do have a couple spare tubes, but they have no hours on them. I'll try one to be certain it's just the tube. But I'd actually like to find a used tube, something with several years worth of use on it, so the brightness will be a better match. It's worth trying to depoison that one. The easy way is to swap it with one of the other digits that gets used more evenly. The quick way is to run those other digits for a bit a higher-than-normal current until they light fully again. - 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+...@googlegroups.com. To post to this group, send an email to neoni...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/52DFE351.7030606%40gmail.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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+...@googlegroups.com javascript:. To post to this group, send an email to neoni...@googlegroups.comjavascript: . To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/191985dc-65bf-4a2a-ae1c-57984c742113%40googlegroups.com . For more options, visit https://groups.google.com/groups/opt_out. -- 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/4048adf2-9e88-4f37-b081-011f6a3d1730%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] IN-18 gone bad.
Yep, this exactly happened to me. A tube suddenly started having problems lighting some digits. Then eventually it stopped working altogether. I caused it because I was swapping the tubes too much. The repeated removal/insertions caused the tube to leak at the pins. I still want to rotate the tubes, but I need to come up with a surrogate socket so I can swap the tubes without stressing the pins. -Dan On Wed, 22 Jan 2014, Gene Mark Segal wrote: You're all wrong, it's leaking gas through the pins. Sent from my iPhone On Jan 22, 2014, at 7:27 AM, Adam Jacobs jacobs.a...@gmail.com wrote: This is an issue that is most obvious on clocks with lots of functionality. If there are different modes/menus that display numerals on a tube that are not normally lit as part of the clock, then you'll see this. Best advice is to take full advantage of automated cathode-poisoning prevention routines. Clocks that don't have any menus, i.e. they don't ever display a numeral on a tube that wouldn't be displayed as part of the standard clock, still have this problem but it's not anywhere near as obvious. For example: If the 10-minutes tube only ever displays 0-5 in the course of being a clock and I don't have any additional menus or modes that might try to display something besides those values, then the critical poisoning of 6-9 doesn't matter to me. John is right. Try to repair the cathode poisoning if it is still fairly mild. I've had great luck in the past doing this with IN-8-2's. [I learned the hard way on some of my earliest clocks regarding current limiting resistors. :S] -Adam On 1/22/2014 5:36 AM, John Rehwinkel wrote: One of the IN-18s in my Nixichron has started to fail. I don't know if it's cathode poisoning or some other failure mode. In the 10's hours position, several of the digits are not lighting completely, they are dark toward the bottom of the tube, probably the bottom 1/3 of the numeral. Sounds like cathode poisoning. This happened rather suddenly, or at least I only noticed it recently. The 1 digit is fine, and that's what is lit most of the time. The other digits only come into play during display of the GPS coordinates every 1/4 hour. As they scroll across the clock, I can see the bad digits. Yeah, cathode poisoning happens when not all the digits are used enough. I do have a couple spare tubes, but they have no hours on them. I'll try one to be certain it's just the tube. But I'd actually like to find a used tube, something with several years worth of use on it, so the brightness will be a better match. It's worth trying to depoison that one. The easy way is to swap it with one of the other digits that gets used more evenly. The quick way is to run those other digits for a bit a higher-than-normal current until they light fully again. - 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/52DFE351.7030606%40gmail.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/DCC680D3-8D1C-458F-99E5-0BE23298FD8E%40earthlink.net. For more options, visit https://groups.google.com/groups/opt_out. -- 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/Pine.LNX.4.64.140137180.20197%40sasami.anime.net. For more options, visit https://groups.google.com/groups/opt_out.
