Re: [neonixie-l] Digest for neonixie-l@googlegroups.com - 10 updates in 1 topic

[Robert Pfingston]

I’m interested. Have 10 DT-104’s I’ve been saving for a long time. 

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On Nov 18, 2022, at 1:43 AM, neoni...@googlegroups.com wrote:



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• Any interest in IV-9 numitron clock kit? - 10 Updates

Any interest in IV-9 numitron clock kit?

Mark Moulding <urro...@att.net>: Nov 17 12:06AM -0800 I've built quite a few devices using the IV-9 tubes, and found them to be extremely durable. (I probably wouldn't be interested in a clock kit, as I have about 3500 tubes in stock...) If operated below their maximum operating parameters (dimmed a little, and soft-started filaments), they'll run essentially forever. The DTF-104Bs are even better, and are really fantastic-looking tubes. They're also extremely rugged mechanically. I've built Burning Man Mutant Vehicle dashboards using these, and the rather extreme conditions of that application didn't faze them at all. I've also had clocks running for nearly a decade with exactly zero failure due to the tube burning out. Impact with flying objects is another matter, but in fact a tube survived for a minute or two even with its outer glass envelope completely shattered. Again, if operated within their specified environment, their lifespan is essentially unlimited. ~~ Mark Moulding   On Wednesday, November 16, 2022 at 10:04:59 PM UTC-8 William Lee wrote:

Ian <iav...@yahoo.co.uk>: Nov 17 09:52AM I’m in

Peter Hall <hall...@hotmail.com>: Nov 17 10:48AM If Richard is in-So am I ?? Peter..insidiousnixies:Utube   From: 'Ian' via neonixie-l<mailto:neoni...@googlegroups.com> Sent: Thursday, November 17, 2022 5:52 PM To: neoni...@googlegroups.com<mailto:neoni...@googlegroups.com> Subject: Re: [neonixie-l] Re: Any interest in IV-9 numitron clock kit?   I’m in   On 17 Nov 2022, at 04:28, Richard Scales <ric...@scalesweb.co.uk<mailto:ric...@scalesweb.co.uk>> wrote:   I have built several numitron kits from nixieclock.biz<http://nixieclock.biz> and am a big fan of numitrons, I have only had them running far a couple of years and then for only half a day at most. I have heard that their tube life is 'long' but have not seen any actual numbers. I have also re-worked the design for other numitrons like IV-19 and DTF104B.     <RCS_5954.jpg>   - Richard     On Wednesday, 16 November 2022 at 22:26:36 UTC mo...@neonixie.com<http://neonixie.com> wrote: Hi Everybody,   I seem to have enough IV-9 tubes to where I can produce a batch of 100 or so 6 digit numitron clocks. Thinking ESP32 powered like my last one (Thank you to all those who gave suggestions, the kit came out great!). I'm thinking maybe try for a full through-hole solder kit with some shift registers.   I know nixies are more popular.. but anyone interested in a numitron clock kit?   Oh, one question I do have, anyone have long term experience (ie, years?) running this particular tube? How do they fare?   Thank you!   Regards, -Moses   -- 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<mailto:neonixie-l+...@googlegroups.com>. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/421b1cfd-f165-49ad-a63b-1afae649b1ebn%40googlegroups.com<https://groups.google.com/d/msgid/neonixie-l/421b1cfd-f165-49ad-a63b-1afae649b1ebn%40googlegroups.com?utm_medium=email&utm_source=footer>. <RCS_5954.jpg>   -- 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<mailto:neonixie-l+...@googlegroups.com>. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/6975019D-E714-4B91-94DC-878BE396B531%40yahoo.co.uk<https://groups.google.com/d/msgid/neonixie-l/6975019D-E714-4B91-94DC-878BE396B531%40yahoo.co.uk?utm_medium=email&utm_source=footer>.

Peter Hall <hall...@hotmail.com>: Nov 17 11:15AM Or am I mistaken—Its Ian that’s in…sorry..I’m looking at Emails,that go everywhere.Gotto go Too Neonixe site,next time. Peter😉   From: Peter Hall<mailto:hall...@hotmail.com> Sent: Thursday, November 17, 2022 7:06 PM To: neoni...@googlegroups.com<mailto:neoni...@googlegroups.com> Subject: RE: [neonixie-l] Re: Any interest in IV-9 numitron clock kit?   If Richard is in-So am I 😊 Peter..insidiousnixies:Utube   From: 'Ian' via neonixie-l<mailto:neoni...@googlegroups.com> Sent: Thursday, November 17, 2022 5:52 PM To: neoni...@googlegroups.com<mailto:neoni...@googlegroups.com> Subject: Re: [neonixie-l] Re: Any interest in IV-9 numitron clock kit?   I’m in   On 17 Nov 2022, at 04:28, Richard Scales <ric...@scalesweb.co.uk<mailto:ric...@scalesweb.co.uk>> wrote:   I have built several numitron kits from nixieclock.biz<http://nixieclock.biz> and am a big fan of numitrons, I have only had them running far a couple of years and then for only half a day at most. I have heard that their tube life is 'long' but have not seen any actual numbers. I have also re-worked the design for other numitrons like IV-19 and DTF104B.     <RCS_5954.jpg>   - Richard     On Wednesday, 16 November 2022 at 22:26:36 UTC mo...@neonixie.com<http://neonixie.com> wrote: Hi Everybody,   I seem to have enough IV-9 tubes to where I can produce a batch of 100 or so 6 digit numitron clocks. Thinking ESP32 powered like my last one (Thank you to all those who gave suggestions, the kit came out great!). I'm thinking maybe try for a full through-hole solder kit with some shift registers.   I know nixies are more popular.. but anyone interested in a numitron clock kit?   Oh, one question I do have, anyone have long term experience (ie, years?) running this particular tube? How do they fare?   Thank you!   Regards, -Moses   -- 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<mailto:neonixie-l+...@googlegroups.com>. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/421b1cfd-f165-49ad-a63b-1afae649b1ebn%40googlegroups.com<https://groups.google.com/d/msgid/neonixie-l/421b1cfd-f165-49ad-a63b-1afae649b1ebn%40googlegroups.com?utm_medium=email&utm_source=footer>. <RCS_5954.jpg>   -- 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<mailto:neonixie-l+...@googlegroups.com>. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/6975019D-E714-4B91-94DC-878BE396B531%40yahoo.co.uk<https://groups.google.com/d/msgid/neonixie-l/6975019D-E714-4B91-94DC-878BE396B531%40yahoo.co.uk?utm_medium=email&utm_source=footer>.   -- 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<mailto:neonixie-l+...@googlegroups.com>. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/MEYP282MB40755A707FB42B98D0B61076A6069%40MEYP282MB4075.AUSP282.PROD.OUTLOOK.COM<https://groups.google.com/d/msgid/neonixie-l/MEYP282MB40755A707FB42B98D0B61076A6069%40MEYP282MB4075.AUSP282.PROD.OUTLOOK.COM?utm_medium=email&utm_source=footer>.

Ian Sparkes <ian.s...@gmail.com>: Nov 17 06:57AM -0800 You really should try to make the drivers constant current drivers: I used to do this with TI parts, but they've been out of stock for over a year.   The TLC5916N drivers are shift registers with constant current drivers attached - great for this sort of thing. The Numitron clocks I made are also NTP/WiFi enabled and based on an ESP8266, with linear digit dimming and a whole bunch of other things (motion sensor, NeoPixel backlights etc).   The ESP32 is a great platform. Absolutely love working with it, but it's a bit overkill for this.

gregebert <greg...@hotmail.com>: Nov 17 10:48AM -0800 Constant-current is an excellent approach for incandescent devices because it eliminates the inrush current-surge that shortens the life of the filament. Recall that a cold filament has lower resistance versus when hot; current-limiting also allows the filament to heat-up slower, which reduces mechanical shock.   I always hated it when I walked into a dark room, flipped-on the light switch, and POOF went the light bulb. On Thursday, November 17, 2022 at 6:57:59 AM UTC-8 Ian Sparkes wrote:

Mac Doktor <themac...@gmail.com>: Nov 17 03:14PM -0500 > On Nov 17, 2022, at 1:48 PM, gregebert <greg...@hotmail.com <mailto:greg...@hotmail.com>> wrote:   > Constant-current is an excellent approach for incandescent devices because it eliminates the inrush current-surge that shortens the life of the filament. Recall that a cold filament has lower resistance versus when hot; current-limiting also allows the filament to heat-up slower, which reduces mechanical shock.   PTC thermistor. I didn't understand this simple principle for a long time.     > I always hated it when I walked into a dark room, flipped-on the light switch, and POOF went the light bulb.     One of my other hobbies is old Christmas lights. The inrush current is a huge deal because most of what I have is rated 15V and wired with 8 bulbs in series. You can't mix different bulbs together unless you use a dimmer or better yet a variac to slowly ramp the voltage up because the curves are different. The bulb with the lowest resistance will always heat up more rapidly and will be the first to blow.   What's needed are miniature base festoons with the sockets in parallel. These are pretty rare as the only thing wired this way were some sets with 6~8V blinker bulbs and a transformer that were only made for a short time in the mid-'50s. I managed to get three of them with 20 sockets apiece back when they were only $25 on eBay. I use variacs and 12V transformers intended for low voltage outdoor lighting. Most of them will bubble reliably at 12V which derates them 20%, further increasing lifetime.   Bonus feature: if a bulb blows all the others stay lit. And despite my best efforts it still happens occasionally but then the bulbs may have many hours on them.     Just as many here were stocking up on Nixies decades ago, I was chasing Christmas lights on eBay, especially bubble lights. I was that noob guy who outbid everyone by going fifty cents over the average price per unit. Today they can't be had for three times what I paid in 2007. Stupid noob, huh? I've never taken an exact count but I have well over 100 bubble lights in my collection. At least a dozen are purple, the rarest color. They're not for sale.     Terry Bowman, KA4HJH "The Mac Doctor"   https://www.astarcloseup.com   "If only you could see what I've seen with your eyes."—Roy Batty, Blade Runner

Moses <mo...@neonixie.com>: Nov 17 01:00PM -0800 Michail,   Thank you for your feedback! I was talking with a friend of mine and we seem to come to the same conclusion about reliability. The specs seem to under rate the drive on these tubes, may be one reason they last so long.   Here is the last clock design: http://neonixie.com/Z57XM6DV2/ A few groups members here have one.   Regards, -Moses   On Wednesday, November 16, 2022 at 8:46:48 PM UTC-8 M1 wrote:

Moses <mo...@neonixie.com>: Nov 17 01:35PM -0800 Trying to reply to the rest of the posts.. but something is deleting my replies as soon as I post them :/   Will try again later.   On Thursday, November 17, 2022 at 1:00:50 PM UTC-8 Moses wrote:

Moses <mo...@neonixie.com>: Nov 17 05:55PM -0800 Mark,   Going to try these posts again, not sure why they are getting deleted. Hope this makes it through.   Good to hear on the IV-9 durability.. I've never ran them other then briefly on the bench. The specs on the IV9 show 3.15v and 20ma or so for the segments, which I believe may be underdriven already just looking at the color. They look pretty good at at 3.3v. What do you run yours at?   Burning Man is awesome! My first burn was this year! Fun times!   Regards, -Moses   On Thursday, November 17, 2022 at 12:06:29 AM UTC-8 Mark Moulding wrote:

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