Re: [neonixie-l] Re: Strange Strobe Behavior on my Nixie Clock
Just to clarify, from the 2 videos, the first one looks like it was intended to blend the seconds-digits as they change. It's not leakage because the digits are almost fully illuminated. My guess is the designer actually went to some extra effort to make the digits behave this way; it's far easier to just make them jump to the next count. The second video is probably some combination of leakage and short glitches where the anodes get pulsed on for a short time, perhaps a few microseconds. -- 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/d70b339c-4848-4a90-a265-4d005dab0cdc%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Strange Strobe Behavior on my Nixie Clock
Looks like a design problem to me. The proper way to blank a nixie tube is to remove the anode voltage, either by killing the HV power supply or disabling the anode drivers. If you leave the power on and the anodes multiplexing with no cathode grounded, the anode has some capacitance to ground, and the multiplex signal is effectively AC, so some small anode current flows and the gas glows. I had a cathode go open circuit on one of my clocks - it was the '8' of minutes - and when that digit was selected, the whole inside of the tube lit up with a dim diffuse glow. Being as it stayed like that for a whole minute it was quite noticeable. Since in this case it's entire digits lighting up, probably the cathode driver is breaking down. Does it use one of the Russian 74141 equivalents? They're only rated for about 70V and if there is no cathode grounded to pull the anode voltage down, considerably more than 70V can appear at the driver. The clock probably won't die from this problem for years, but why take a chance? If I were you, I wouldn't use the timer function to turn off the tubes, since the tubes run continuously will last longer than a TTL chip being broken down by HV pulses on a regular basis. -- 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/1647bea7-9eb1-46c3-87a3-48d077799c8c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Extraordinary nixie/dekatron clock design
What kay486 said - spoiling the ship for a ha'porth of tar. But if the front panel was in cyrillic and it was knocked about a bit, all rusty and dented and with intermittent faults, then those nixies might be appropriate. -- 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/1d0c15aa-a70f-4c36-8eea-1ed0920161ef%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Re: O.T.but...
Is THAT what the V-shaped thing is for? I'm indebted to you sir - I never knew what it was for. On Tuesday, July 22, 2014 10:39:42 PM UTC-7, Nixcited delighted wrote: I use a fairly cheap device found in most UK hardware/tool shops as part of a sliding rule set. In my case it included just the sliding square on the left and the circle centre finder on the right. The middle piece is an angle finder/setter. You use the centre finder in exactly the way Nick described - place the angle around your circle in several places and draw lines along the rule. Where the lines intersect is your point. Punch it and drill. -- 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/6cc1d305-0e15-4af1-8297-5eb324a781b5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] A use for all those Itron displays I've got in the garage
Grahame, Your comment nagged at me, so I did include Huffman compression and got nearly 100k of text down to 48k. I wrote a program to take a text file and output it a line at a time to a file I can directly include in my AVR code, along with the Huffman tree and a symbol table for looking up the string addresses. It took me a few days, including a 40 hour day over a weekend, but the satisfaction pays for all. On Sunday, July 6, 2014 10:38:12 AM UTC-7, Grahame Marsh wrote: Pete, snip Did you use any compression for the text? I just about doubled the number of proverbs I could fit in doing so. -- 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/a1c4c70d-eece-4552-bb15-abd7364f53f9%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Can anyone here use these?
Hi all, The modules are gone Kind Regards Dan From: Dan Harboe Burer Sent: Friday, July 25, 2014 7:38 PM To: neonixie-l@googlegroups.com Subject: [neonixie-l] Can anyone here use these? Hello Nixiefans Take a look at these pics.. can anyone here use these for a project? I have the 5 modules I pulled from a Danish built DISA counter (which looked very much like a HP clone) The counter itself was not salvageable.. too much damage to the cabinet, all tubes were stripped.. so I saved these 5 display modules – and their mating connectors! My guess would be they need 4 ECC82 each to awaken.. Of course I could put them up on ebay.. but I will just let you guy get a chance.. Price? Something funny in trade. Make me an offer – I will pay shipping for these in retur for whatever we aree in Greetings from (a far too hot) Denmark Dan -- 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 email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/DDE7152ABBAF4109A9D3BE2ADAEF0F80%40DanDims. 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 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/468FCC9BB46946C3B9A0BBE3C1D0A51A%40DanDims. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Can anyone here use these?
Are the bulbs neon, or incandescent ? Someone could theoretically adapt a nixie-tube clock to drive neon bulbs and use just the shells from the modules. -- 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/1eaacdc4-e258-47d6-8f1f-ef3e6851c4d8%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Re: Can anyone here use these?
These appear to be similar to the HP modules called AC-4. They use neon lamps. I built a web page about the HP modules many years ago.. http://www.nixiebunny.com/hpac4/ On 7/25/2014 2:18 PM, gregebert wrote: Are the bulbs neon, or incandescent ? Someone could theoretically adapt a nixie-tube clock to drive neon bulbs and use just the shells from the modules. -- 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/53D2D0B4.1030205%40dakotacom.net. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Re: Can anyone here use these?
The HP AC-4's were also neon. Ira. On 7/25/2014 2:48 PM, David Forbes wrote: These appear to be similar to the HP modules called AC-4. They use neon lamps. I built a web page about the HP modules many years ago.. http://www.nixiebunny.com/hpac4/ On 7/25/2014 2:18 PM, gregebert wrote: Are the bulbs neon, or incandescent ? Someone could theoretically adapt a nixie-tube clock to drive neon bulbs and use just the shells from the modules. -- 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/53D2F220.8030508%40HUGHES.NET. For more options, visit https://groups.google.com/d/optout. attachment: IRACOSALES.vcf
Re: [neonixie-l] Re: Strange Strobe Behavior on my Nixie Clock
Well, it's multiplexed and there isn't any biasing for the anodes when they are off, so that explains the dim glowing digits. -- 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/a84d8304-930e-432d-ab89-c8dd3df15d8b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Re: Strange Strobe Behavior on my Nixie Clock
I was reading http://en.wikipedia.org/wiki/Biasing and it states A hot bias can lower the tube life span, but a cool bias can induce crossover distortion Would this be considered hot biasing that could lower the tube life span? On Friday, July 25, 2014 11:37:52 PM UTC-5, gregebert wrote: Well, it's multiplexed and there isn't any biasing for the anodes when they are off, so that explains the dim glowing digits. -- 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/592e7943-70da-4655-966c-022786deba40%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
