I don't know how to rise the intensity... I wish I had a laboratory DC power supply, but mine stops at 30V. so I put a NCH6300HV to raise the voltage. If I can adjust the voltage, I cannot adjust anything else. however I added a voltmeter and ammeter to check what I'm sending to the tube. Do you know if there is an adjustable power supply that can be used for our beloved tubes? So, I regulate the voltage and I check that I do not exceed the desired values.
should I change the 32K resistor between the PS and the tube? could a potentiometer be used? So I did see an improvement. but some need to be "heated". I of course doesn't speak of temperature, but they need 10 to 20 seconds to get their full glow, a bit like a neon tube with an old starter. They are 52 years old now and never been used. Le vendredi 21 avril 2023 à 16:20:59 UTC+2, gregebert a écrit : > The IN-1 datasheet says 2.5mA typical operating current, so you should try > cleaning the other 3 tubes at just under 3mA. The other 7 tubes might > clean-up on their own at normal current if the usage is balanced. > > So did you see some improvement ? > > On Friday, April 21, 2023 at 12:14:05 AM UTC-7 Benoit Tourret wrote: > >> I ran each tube with 180V 2mA / two hours, turning each plate for 2 >> minutes. >> >> on 10 tubes: >> >> 7 are OK >> 3 are not perfect. >> >> I will wait to be able to lit them all together. >> >> >> Le jeudi 20 avril 2023 à 01:27:40 UTC+2, gregebert a écrit : >> >>> I couldn't resist asking google Bard this question: Are IN-1 nixie tubes >>> reliable ? >>> Well, here's the answer. Feel free to laugh.....love the part about the >>> filaments. Geez, maybe that's why I had so much trouble with mine ? >>> >>> IN-1 nixie tubes are generally reliable, but they can fail over time. >>> The most common failure mode is a leak in the vacuum tube. This can happen >>> due to a number of factors, including manufacturing defects, physical >>> damage, or exposure to extreme temperatures. >>> >>> If a leak develops, the tube will slowly fill with air and the filaments >>> will eventually burn out. This can happen over a period of months or even >>> years. To prevent leaks, it is important to store IN-1 nixie tubes in a >>> cool, dry place and to avoid dropping or banging them. >>> >>> Another potential failure mode is a failure of the heater filament. This >>> can happen due to a number of factors, including overheating, overvoltage, >>> or physical damage. If the heater filament fails, the tube will not light >>> up. >>> >>> To prevent heater filament failures, it is important to use a regulated >>> power supply and to avoid exceeding the maximum operating voltage. >>> >>> On Tuesday, April 18, 2023 at 2:03:54 PM UTC-7 gregebert wrote: >>> >>>> I never had an IN-1 run long enough to get poisoned. Mine developed >>>> internal shorts, resulting in 2 numerals glowing at the same time. >>>> From what I've heard, nixie degradation increases exponentially with >>>> current, so you want to stay as close as possible to normal operating >>>> current. Try running the worst digit continuously for a few hours at 20% >>>> higher current, and see if that helps. I was (briefly) drawn to the IN-1 >>>> over 10 years ago because of the large size for the low cost; I bought a >>>> case of 25 for around 40USD including shipping. Only a few survive today >>>> that weren't dissected or tortured in a microwave oven (yeah, pretty >>>> hilarious but kinda toxic because of the bakelite). >>>> >>>> A few of the IN-18's in my clock have shown signs of poisoning even >>>> though I run a cleansing routine for 1 hour every night. This is >>>> most-visible on the first day of the month for the months digit, and it >>>> can >>>> take a few days to recover. This clock has 14 tubes; kinda ridiculous but >>>> it looks impressive. It was inspired by the movie "Tomorrowland", which >>>> has >>>> a brief scene with two 6-digit IN-18 clocks. I'm certain one of our >>>> neonixie members is the creator of that clock (that was an invitation for >>>> you to take a well-deserved bow...). >>>> >>>> Tubes that run 0-9 during the day need no cleansing (unit seconds, unit >>>> minutes, unit hours). Tubes the run 0-5 during the day are cleansed by >>>> running 6-9 (tens seconds, tens minutes). Tubes that are static, or near >>>> static (tens hours, month, day, year) run 0-9 for cleansing. >>>> >>>> The static tubes, notably the 4-digit year, show very little signs of >>>> poisoning because I have swapped them around to put the >>>> most-vulnerable-to-poisoning tubes where they run 0-9 during the day. >>>> >>>> I havn't seen any signs of poisoning on Burroughs tubes. >>>> >>>> On Tuesday, April 18, 2023 at 11:39:54 AM UTC-7 Benoit Tourret wrote: >>>> >>>>> Hello, I have some IN-1 that seems to be poisoned. poisoned or rather >>>>> oxided, as they seems to be really new. it is fine mesh from September >>>>> 1971. >>>>> two of them are fine after one or two day, tree other doesn't show any >>>>> improvement. >>>>> >>>>> I read that I must overload them a while but how many and how long >>>>> should I keep one digit on before light the next digit ? is it 1 second >>>>> or >>>>> one day... >>>>> >>>>> by the way, as I read that this tube doesn't have mercury inside, can >>>>> it be unpoisonned ? >>>>> >>>> -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/b554ff13-3806-4c16-af85-8bb7bb10e277n%40googlegroups.com.
