Re: [neonixie-l] Numeric Companion Tube for Z567M

Best tube overall, period. At least for me. Good size, digit surface to total surface ratio, nice tube proportions (Z568M are too bulky in my opinion), curved 6 an 9, thin anode mesh. They also seem to be long life, I have a clock running 24/7 for six years with no sign of wear - and those

Re: [neonixie-l] Re: Lc-516 info?

I made a clock with those tubes few years ago and I can confirm they do not fail as quickly - they are still fine. Colour of the discharge suggests there was more mercury used than in regular tubes. Great replacement for IN-1, but I would pick different tube if I was to make a new clock - the

Re: [neonixie-l] VFD filament drive

Did you try simple PWM? I once tried it, but didn't leave it on for long time, so I can't tell if it shortens the tube life or not, but by simple logic it shouldn't. For most of the time the cathode will be at the same potential. Also it's a nice method of elevating the cathode potential above

[neonixie-l] Re: For sale: NIB Philips ZM1200 and used Dolam LC-631s

All the tubes had been sold and shipped! And even few more that were not mentioned in previous post. Frankly speaking I didn't think that they will go so quickly. I hope they will all reach their destination safe and undamaged. piątek, 25 września 2020 o 11:24:05 UTC+2 Tomasz Kowalczyk napisał

[neonixie-l] Re: Information about very odd ZM an Z Nixie Tubes and Dekatrons

I'd like to use your thread to add one more tube to the list of sought tubes: LC-541 - a biquinary tube made by Dolam, mentioned as a replacement for other biquinary tubes with noval socket in some RFT catalog. I've never seen a photo of one or any other mention of its existence. -- You

[neonixie-l] Re: Master list of oddball symbols?

W dniu wtorek, 14 stycznia 2020 22:15:16 UTC+1 użytkownik Terry Bowman napisał: > > > Then there is the famous "spiral" in tubes like the ITT58GSST. That one > has the symbols "+, −, ~, (spiral)" so obviously it was a prefix tube for a > voltmeter and/or ammeter but what does the spiral

[neonixie-l] Re: Scored a neat power supply today... and some nixie I can't find datasheet for... NL-919

Wow! This power supply is neat. I play with vacuum tube amplifiers too and this has almost the specs I would ask if I was to order a custom one for amplifier doodling! Great stuff. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe

Re: [neonixie-l] VFD Filament Current

VFDs are basically directly heated triodes. To reach cutoff, the grid has to be at some negative potential in respect to the cathode. It is just easier to elevate the cathode above ground and swing the grids to ground than creating yet another voltage rail. The question is - if the filaments

[neonixie-l] Re: Anode current and voltage measurement

If you're using direct drive, then the problem can be solved with a differential amplifier with integrated resistors - this is the only way you can achieve high common mode rejection ratio, as any mismatch in the resistor network can really affect your measurements. There is a nice article

[neonixie-l] Re: Some nixie oddities for sale

I wish I could edit the post... Another embarrassing mistake. I've meant Jens and Aleksanders sites. -- 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] Re: Some nixie oddities for sale

Wrong link to the drive folder... I've shared just one photo instead of whole album. This one should work. https://drive.google.com/open?id=1VwyfMLvuJ4UY0LvyodVbh7ERTzWCABGi -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from

[neonixie-l] Some nixie oddities for sale

Hi, I've decided to post it here instead of eBay, because here I will reach the passionate collectors (i.e., tube hoarders) of rare nixies. As a tube hoarder I've collected few odd tubes over the years, but I am no photographer and never did anything with them apart from testing, so they are

[neonixie-l] Re: Suggestions for a LiPo powered nixie power supply design?

W dniu czwartek, 2 maja 2019 20:54:25 UTC+2 użytkownik gregebert napisał: > > Sounds like your transformer is saturating; common problem with small > magnetics. > > I used an LPR6235-123 from Coilcraft in my wristwatch. They sell to > end-users in small quantities, which is nice. > Even though

[neonixie-l] Re: Nixie clock with the CT7001/FCM7001 chip?

W dniu środa, 17 kwietnia 2019 20:11:41 UTC+2 użytkownik Dekatron42 napisał: > > I've come across a few of the CT7001/FCM7001 clock chips which were > designed to be used with LED displays and I've been looking for a Nixie > clock design with this chip but I haven't found any yet - does anyone

Re: [neonixie-l] OT: audio levels

W dniu wtorek, 16 kwietnia 2019 15:57:35 UTC+2 użytkownik johnk napisał: > > Well, how do I say this Thomas? > > It is NOT to be called Watts RMS ! > > They left the vital word out – it is Watts [RMS derived]. They left out > “derived”. > > > > The RMS volts and RMS amps that you mention when

Re: [neonixie-l] OT: audio levels

W dniu piątek, 29 marca 2019 08:46:37 UTC+1 użytkownik charles napisał: > > On 2019-03-28 10:09 p.m., johnk wrote: > > the FTC in the States started cracking down and said that any power > claims had to be based on teh RMS output (.707 of the peak) using a sine > wave with Specified

Re: [neonixie-l] OT: audio levels

W dniu piątek, 29 marca 2019 08:46:37 UTC+1 użytkownik charles napisał: > > On 2019-03-28 10:09 p.m., johnk wrote: > based on teh RMS output (.707 of the peak) > That would be 0,707 (1/sqrt(2)) voltage output on a resistive load. RMS power of a sine wave is 0,5 times peak power. I like to

[neonixie-l] Re: Sourcing smooth top nixies?

Dolam LC-631 tubes? They are slightly taller and slimmer than other B13B socket tubes and they come with a smooth top. W dniu sobota, 6 kwietnia 2019 19:19:30 UTC+2 użytkownik alex nolan napisał: > > Does anyone have any leads (or is willing to sell) nixie tubes with smooth > tops? I am

[neonixie-l] Re: VFD grid current. Any ideas why it's so high ?

Pros of using metric system - if I made such mistake, I would be positively surprised! I don't know what to do with them yet. I've purchased them because they were cheap and could be gone any second, not because I needed them for any current project :) For a see-through clock I'm afraid that I

[neonixie-l] Re: VFD grid current. Any ideas why it's so high ?

Yes, this high grid current is normal. Standard vacuum tubes, which work as amplifiers, not displays, have different construction in which grid is very close to the cathode, and anode is also relatively close to the grid. This allows the tube to operate with negative grid voltages, at which

[neonixie-l] Re: Dummy load

Well, I definitely should finish my morning coffee before posting... W dniu piątek, 21 grudnia 2018 10:07:14 UTC+1 użytkownik Tomasz Kowalczyk napisał: > > In many cases this isn't a great deal. > Of course I mean that it isn't a problem. > The extra circuit allowing the output

Re: [neonixie-l] Re: Ongoing project: 12 tube date + time clock

ks though..) > > - Øyvind > > On Fri, Dec 14, 2018 at 12:50 PM Tomasz Kowalczyk > wrote: > >> I was afraid of SMD components, too. But later I've discovered, that 0805 >> resistors and SOT-23 transistors are actually very easy to solder, easier >> than THT (

Re: [neonixie-l] Heads-up - spammer using this group to harvest email addresses

Just stop sending them at all instead of apologising to people one by one and removing their adresses. Spam mailing is considered rude and to be honest I didn't even bother looking at your offer - I don't read spam. W dniu środa, 10 października 2018 06:55:32 UTC+2 użytkownik Юрий Овчинников

Re: [neonixie-l] Interesting find on eBay - beam switching tubes (probably)

Thank you for correcting me and providing more information! W dniu wtorek, 9 października 2018 17:31:24 UTC+2 użytkownik jrehwin napisał: > > In the last years of serious tube research and design there was a new type > of cathode created, which was as efficient as previous types, but was >

[neonixie-l] Re: Interesting find on eBay - beam switching tubes (probably)

n but in "off" state, which renders the tubes useless for > any kind of linear usage afterwards. > So the amount of money to be had from then is actually pennies :) . At > least for the discerning buyers. > > On Monday, October 8, 2018 at 4:54:57 AM UTC-3, Tomasz Kow

[neonixie-l] Re: HV5530 problems

Some of the chips have internal latches, wouldn't this feature counter flickering? HV5522/HV5622 seem to be similar to chips you're using, differing mostly in presence of latches (and some differences in pinout, too). W dniu poniedziałek, 8 października 2018 20:31:21 UTC+2 użytkownik

[neonixie-l] Interesting find on eBay - beam switching tubes (probably)

During my routine search for interesting auctions I found this auction: https://www.ebay.com/itm/Burroughs-6844A-Nixie-Tubes-on-PCB-Sockets-Leads-w-Counters-6703-5814a/192682396566?epid=1825418631=item2cdcc40b96:g:Pf8AAOSw8U9burg8 The counter modules seemed suspiciously large, so I thought they

[neonixie-l] Re: old fashioned pcb

I personally don't like white PCBs, as they are really bright and always reflect light, even from nixies themselves - and I really enjoy my clocks digits being the only thing visible in my dark room at night. Also, debugging a white PCB is a nightmare, traces are impossible to follow. On the

[neonixie-l] Re: Welcome & please introduce yourself!

Hi, I'm Tomasz. I'm one of the youngest in here - being born after the end of production of nixie tubes, even in USSR. I've made my first contact with nixies while studying - Warsaw University of Technology is still using Meratronik equipment, because it is considered idiotproof - and first

Re: [neonixie-l] Edge lit displays identification help needed

n up the titles > to make them more readable but leave them basically as-is?) > > > > A.J. > > > > Those are edge-lit readouts. Here are a couple photos of the IND-0300: > > > > http://home.comcast.net/~cwebster68/edgelit1.jpg > > http://home.comcast.ne

Re: [neonixie-l] Re: "Keep Alive" Circuit

Suprisingly, my clock uses a counterfeit module and after modding it (removing charger circuit) it provides accurate time. Of course, this is not guaranteed with counterfeit chips. But as long as I am building clocks for myself, I'm going to stick to the cheapo modules from Aliexpress.

Re: [neonixie-l] Look what I found... VFD calculator

VFD display technology is still used nowadays. For example the displays next to cash registers, at least the cyan ones are VFD - they provide excellent contrast. Only modern LED displays are comparable. Take a closer look at those, if you can see the grids, then it is definitely VFD: Joining

Re: [neonixie-l] NL-50944 Infos?

I suppose there are two reasons why so many pins are present. One is locating the right position of the tube - if you skip most of the pins, then orientation can be located only by judging where the front of the tube is. If there is only one way to put something in something, then the risk of

[neonixie-l] Re: OT: Looking for folks interested in 3l01i CRT discussion

Should we understand that as "these tubes have very short expected operating time"? By the way, this clock is gorgeous. I feel like this picture will start a new obsession of mine - to make a CRT clock... W dniu niedziela, 13 maja 2018 16:58:38 UTC+2 użytkownik petehand napisał: > > I've got

[neonixie-l] Re: circuit board creation.....

A boost converter will be also a lot smaller, even with a big LC filter, which is recommended to keep your B+ free of converter noise. Also, efficiency will be much higher (80% is very realistic). Are you able to determine current drawn from B+? Is the circuit drawing constant amount of

[neonixie-l] Re: PCB fabricator recommendations/comparisons?

I've been using PCBWay at work for a while, over 50 designs with 5-20 boards per design ordered. Generally speaking, they aren't the best, but their PCBs are exactly what you'd expect for the price. Sometimes the boards are perfect and only the problem is misaligned overlay layer, which

[neonixie-l] Re: Opinions on this inverter transformer for prototyping NIMOs

Worth noting: 1. Your typical voltmeter is rated for 600V or 1000V. You'll need to use a voltage divider (for example a 10 MEG : 1 MEG). Depending on your voltmeter internal resistance, you might need to adjust the result to take it into account - check its datasheet for more information about

Re: [neonixie-l] Opinions on this inverter transformer for prototyping NIMOs

This is not the turn ratio. The person who wrote that text measured DC resistance... so 260 is resistance ratio, which is a pretty useless parameter. Both windings are most likely wound with different wires (thicker for low voltage side, the thinnest possible on secondary). What you need to do

[neonixie-l] Re: Russians chip K155ID1 SOIC 16L packaged

Judging from "datasheet" provided, it is really the same die as in old chips. It makes me wonder if these weren't created from leftover dies from old production, just packaged in different housing. Note that all the bad things about old chips are present here too: breakdown voltage of >60V,

[neonixie-l] Re: How to power 18 IN-9?

The power supply for such circuit will be tricky, as the load will vary a lot during operation. I think that a simple boost converter won't be able to achieve enough power and due to high duty cycle, stability will be a problem. A flyback design should do the trick, however making your own will

[neonixie-l] Re: 'Omnixie' Smart Wifi Nixie Clock released

Thanks for suggestions. The smaller one looks like like it should do the job with correctly designed converter - the one I found doesn't look like it can dissipate more than 100mW without damage. Same story for me and CJ5143 - I've received two of those as free samples. My converter with CJ5143

[neonixie-l] Re: 'Omnixie' Smart Wifi Nixie Clock released

RtuUzdXkd2fJHGPIeOqVCwbhWWJgcQCLcBGAs/s1600/psu.png> > > > > <https://lh3.googleusercontent.com/-XB7YlsBqDms/Wqp2faE_n-I/APY/VbmGNOtvRaYgZvJmR2XcyRA8ZyPWXCtpQCLcBGAs/s1600/t.png> > > 在 2018年3月15日星期四 UTC+8下午2:42:03，Tomasz Kowalczyk写道： >> >> I love h

[neonixie-l] Re: Dolam LC-7

I've recently got my hands on a rather interesting pair of tubes: LC-531s, which have same digit stack order and pinout as LC-7. All other features (a getter structure on top, darker and non-reflective back of anode cage etc) are exactly the same as in standard LC-531. This is a strong

[neonixie-l] Re: 'Omnixie' Smart Wifi Nixie Clock released

I love how thin this clocks base is. I'm wondering how the power supply is made - judging from dimensions of your NCH8200HV power supply, fitting that transformer isn't an option - or am I wrong? Or is it a boost converter on a flat inductor with voltage doublers? Anyway, this is the thinnest

[neonixie-l] Re: HV5523/HV5623

This was taken fron Absolute Maximum Ratings. There is a note right under them: "Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at those or any other conditions

[neonixie-l] Re: Numerical nixies similar to Dolamn LL-555-558 for letters I and O

LC-511 / LC-513. These have exactly same envelope and base W dniu sobota, 24 lutego 2018 00:43:15 UTC+1 użytkownik ZY napisał: > > Hello, > > I'm trying to spell out a word with non-segmented nixie tubes, and it > seems the Dolam LL-555 to 558 series are my best bet for something > available on

[neonixie-l] Re: Numitron clock driving question

. The Russian tubes are not specified > as highly (15,000 hrs operational life - I have no idea about vibration), > but I use them all the time, and again have never had a failure. > ~~ > Mark Moulding > > > > On Wednesday, February 21, 2018 at 5:26:39 AM UTC-8, Tomasz

Re: [neonixie-l] Re: Numitron clock driving question

; > > On Feb 21, 2018 6:39 AM, "Terry Kennedy" <terry-...@glaver.org > > wrote: > >> On Wednesday, February 21, 2018 at 8:26:39 AM UTC-5, Tomasz Kowalczyk >> wrote: >> >>> What are your experiences with numitrons? What methods of prolonging &

[neonixie-l] Numitron clock driving question

Hi, I'm recently getting more and more interested in making an IV-16 clock. I'm planning to make 6 tubes one, so burning filament can be an issue - while the datasheets can state 5000+hrs, I'd like to be extra careful. One idea is to use a LED driver with programmable current, for example

[neonixie-l] Re: Inter-Cathode Leakage

If the bridge created by sputtering still has significant resistance (sputtered layer has sub micron thickness), then it doesn't behave like a short. Imagine this as some other digit being connected to the same driver transistor, but through a resistor of 10-100k value. Then the other digit

[neonixie-l] Re: Story Time: How you got to the nixie hobby?

I encountered them while studying at Warsaw University of Technology. There are still dozens of Meratronik multimeters being used there - mostly because these are really idiot-proof and students won't destroy them :) Having a manual range setting is also a bonus, because students can learn

Re: [neonixie-l] MCU religious wars (OT?)

I think the hate on Arduino comes from people, who started programming microcontrollers twenty or so years ago, learned how to program one chip and failed to move on to new world, in which efficiency of the code and exact knowledge of what is happening in the hardware is no longer essential. I

[neonixie-l] Re: MMBTA92 & MMBTA42 anode switching circuit problem

Nick, Martin, thanks for the read! W dniu wtorek, 23 stycznia 2018 00:56:25 UTC+1 użytkownik gregebert napisał: > > There is 1 other thing that could be happening, and although it *wont* > cause ghosting, it *will* add confusion from the measured waveforms: If > the PNP driver turns-on

Re: [neonixie-l] Re: MMBTA92 & MMBTA42 anode switching circuit problem

W dniu czwartek, 18 stycznia 2018 19:29:02 UTC+1 użytkownik Frank Bemelman napisał: > > It is not the transistor that keeps conducting or leaking. The voltage you > see at the anode comes from leakage from floating cathodes from the other > tubes. > Oh it was just seconds ago when I

[neonixie-l] Re: MMBTA92 & MMBTA42 anode switching circuit problem

W dniu czwartek, 18 stycznia 2018 13:54:32 UTC+1 użytkownik GastonP napisał: > > Another option (just to help troubleshooting but involves no soldering) is > to change the driving sequence to avoid adjacent tubes to be driven one > after the other. For example if you are driving the tubes in

[neonixie-l] Re: MMBTA92 & MMBTA42 anode switching circuit problem

I've checked the driving circuit before posting with oscilloscope and there is absolutely nothing incorrect visible up to MMBTA92s collectors. I've taken photos of the bases of PNP transistors - the signal is clean, as visible below:

[neonixie-l] Re: MMBTA92 & MMBTA42 anode switching circuit problem

Thanks, I'll try pulling to HV/2. I already tried pulling down to GND, but it didn't change much. It decreased the "discharge time" of incorrectly opened PNPs. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and

[neonixie-l] Re: MMBTA92 & MMBTA42 anode switching circuit problem

I'll be able to check it in few days. Power supply won't be overloaded for sure, it's a 0-300V 1A lab power supply :) W dniu środa, 17 stycznia 2018 22:03:24 UTC+1 użytkownik gregebert napisał: > > Can you check the signals on all 4 of the NPN bases at the same time? > Neglecting blanking, they

[neonixie-l] Re: MMBTA92 & MMBTA42 anode switching circuit problem

For some reason pasting photographs in google groups doesn't work as I would wish it to. So enjoy the two extra copies of photos at the top, which I didn't see, as I was trying to paste something at the point I was writing at that moment. -- You received this message because you are

[neonixie-l] MMBTA92 & MMBTA42 anode switching circuit problem

[neonixie-l] Re: Questions from a Nixie newbie (raspberryPI project)

Direct drive or multiplexing - I would vote for direct drive. It is just simpler to control, as you need to set the GPIOs only once a second. As far as I 've heard, controlling GPIO of a RPI is problematic, so you could use shift registers or I2C I/O expanders. With those you aren't really

[neonixie-l] Re: other uses for nixies

GR-1620 http://lampes-et-tubes.info/cd/cd032.php?l=f Good luck hunting for this + at least 3 GR-414 though :) There are also ZM1185E and NL-924. And now, to be more realistic: use two tubes to combine letters, this way you might also make a "kg"/"g" scale. For example, use Dolam LL-55x tubes.

Re: [neonixie-l] Re: other uses for nixies

It had been done before: http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/Digital-Roehrenuhr.htm W dniu piątek, 22 grudnia 2017 05:48:40 UTC+1 użytkownik Pramanicin napisał: > > Or an all valve nixie clock! ;-) > > On Thu, Dec 21, 2017 at 3:09 PM, Allen Dutra

[neonixie-l] Re: other uses for nixies

Car speedometer? Never seen a project like this, it would fit a youngtimer. Just don't REPLACE your original speedometer, no police officer would accept a homemade device as a valid equipment on which you'd swear that it was showing under 50km/h! W dniu środa, 20 grudnia 2017 18:33:52 UTC+1

[neonixie-l] Re: Global Shipping Program disaster, need help

This thing can be easily explained, in Polish and Russian (and I bet in most Slavic languages, too) we use word "lampa"*, which means both electron/gas discharge tubes as well as regular lamps. At the same time, word "tube" translates to words meaning a pipe (which is never used to describe a

[neonixie-l] Re: Z5680M Lab sample

użytkownik Tomasz Kowalczyk napisał: > > This is a bit insane. I understand that this tube is rare and all, but as > this is just a single of unknown properties (it might have gas composure > resulting in short life) I can't think why would anyone buy it - with that > money, you could

[neonixie-l] Re: Z5680M Lab sample

This is a bit insane. I understand that this tube is rare and all, but as this is just a single of unknown properties (it might have gas composure resulting in short life) I can't think why would anyone buy it - with that money, you could buy a set of 6 Z568Ms! If this thing ends up being sold

[neonixie-l] Re: Microcontroller driven boost converter

Thanks! I looked into the code and it generally looks similar to my pseudo-PI approach (preloading PWM to some value and then simply ++ or -- if output is too high or too low). I had troubles with slow response, but I think that it was because how analogRead is handled on STM32 hacked to work

[neonixie-l] Microcontroller driven boost converter

Hi, I'm trying to power my boost converter from a microcontroller and I've encountered stability problems. I tried to make pseudo-PI controller, a PID controller and few other tricks, but the unloaded output just doesn't want to be even close to stable. Of course, I'm using a buffer between my

Re: [neonixie-l] Z 568 M - doubt in the purchase

If you decide not to buy them, give the seller my e-mail! W dniu piątek, 1 grudnia 2017 22:45:18 UTC+1 użytkownik Mattelec napisał: > > I agree, but I might take the risk and buy them. The seller just told me > that the price is for the 6 tubes. > > Tomorrow I will post more photos if I recieve

Re: [neonixie-l] PCBWay

At the place I work at we're ordering our PCBs from PCBway, about 25 different designs in last 12 months. I generally recommend them, however it seems that they have more than one plant and/or are outsourcing the job to smaller companies if they get overloaded - shades of soldermask are

Re: [neonixie-l] Clock Three Jr. - What Amp for AC adapter?

It won't do any damage. The current rating on a voltage supply is a maximum value. Actual current flowing is determined by the circuit - if it is taking 250mA from 5V, 1A supply, it will still take 250mA from 5V, 3A supply. As long as the supply provides 5V and has rating of at least 250mA, it

[neonixie-l] Re: Incandescent display modules

https://www.ebay.co.uk/itm/5x-Nixie-Tubes-AND-PCB-Rodan-CD66-ZM1242-Suit-Retro-Digital-Clock-Steampunk/122793849012 https://www.ebay.co.uk/itm/VERY-RARE-2-x-USED-ZM1050-bases-Dekatron-Suit-Retro-Digital-Clock-Steampunk/122795436350 >From the same seller. He seems to own alot of interesting old

Re: [neonixie-l] Half-digit neon bulb 25/15 mm long

Unfortunately, I haven't seen this kind of approach in any Polish equipment - even the V54x voltmeters/multimeters used full sized Z566Ms for all digits even though the leftmost digit was showing only "1" or nothing*. I also haven't seen any long neon bulb in any of equipment. *I can't remember

[neonixie-l] Re: Nixie Shield for Arduino

IN-1/LC-516 have pins not connected directly to the glass, so stress on the pins shouldn't cause cracking of the tube itself. ElectroNIXclock 4xLC-516 uses a specific type molex connector: https://www.tme.eu/gb/details/zzs525-tz/dc-power-connectors/joint-tech/c5080f-tbe/ I've tried it and it

Re: [neonixie-l] Re: Half-digit neon bulb 25/15 mm long

There are three test points in there, two for voltage rails and one apparently for a time base. I suspect the power is OK if it does power up at all (unless all the logic chips needed for display do not use it and have separate voltage rails), what about the 5HZ point? Also, if the reading is

[neonixie-l] Re: Half-digit neon bulb 25/15 mm long

I think producers of neon bulbs decided to make searches extra hard (datasheets with no dimensions or dimensions not tied to bulb name, using same name for different bulbs etc). But I think I've found something quite similar in size:

[neonixie-l] Re: XN-12s on Ebay

A NEC CD66A for comparision: Source - I used to own this particular tube. W dniu niedziela, 29 października 2017 18:13:44 UTC+1 użytkownik Roddy Scott napisał: >

[neonixie-l] Re: HV5523/HV5623

Having a thermal pad does wonders. A PLCC package, in socket or not, has to dissipate heat mainly through its body, because heat transfers to other parts of the board only via legs. In practice, almost all power is dissipated through plastic. Thermal pad allows to mostly transfer the heat to

[neonixie-l] Re: HV5523/HV5623

I'm a bit concerned about spacing between pads. The device states it is able to switch voltages as high as 220V. The QFN package has spacing between the pads is nominally 0,25mm. This is violating norms about PCB spacing vs. voltage, the least strict norm I found states that 0,4mm spacing is

[neonixie-l] Re: Absolutely gorgeous Z568M Nixie clock on Ebay

Stunning. I like when the base is small, without any fancy details nor RGB back(under)light. It puts the tubes in the center of attention. I wonder how tightly packed are components inside and how the wood was processed - some components, like DC jack or boost converter coil take up alot of

Re: [neonixie-l] Why is there no "prefix" special symbol Nixie tube in the ZM102X / Z56X series?

I think there are no known (to the internet) tubes in that series other than standard -,+,~ tubes. I don't know why no one decided to throw extra symbols in the existing tubes or nobody made an extra tube - perhaps the reason was that you needed to cover the bottom and top of symbols to

Re: [neonixie-l] Re: all my Nixie tubes are dying :(

There was once a thread on this group, where this topic was discussed - 1. will undercurrenting tubes actually decrease their life and 2. does multiplexing affect tube life and how. As far as I remember, the poisoning problem of undercurrented tubes was mentioned there. W dniu wtorek, 3

[neonixie-l] Re: Tube storage solutions?

I have to keep my tubes in boxes... no space in my room for storage they deserve. I hope some day I will have enough room to have them all

[neonixie-l] Re: 7971 nixie tube problem

That's an interesting method of driving the anodes. W dniu piątek, 8 września 2017 15:12:38 UTC+2 użytkownik Robert L napisał: > > Complete 73 issue from July 76... See here: > > > https://ia902601.us.archive.org/31/items/73-magazine-1976-07/07_July_1976.pdf > > Caution... thread drift... > >

Re: [neonixie-l] 7971 nixie tube problem

Sent from Verizon Note 2 > > > On Sep 7, 2017 2:52 PM, "Tomasz Kowalczyk" <ten@gmail.com > > wrote: > >> What do you mean by "disintegrated"? Did it break into thousands of >> pieces, like a car window? >> >> W dniu czwartek, 7 wrześ

Re: [neonixie-l] 7971 nixie tube problem

What do you mean by "disintegrated"? Did it break into thousands of pieces, like a car window? W dniu czwartek, 7 września 2017 19:32:45 UTC+2 użytkownik Clarke Payne napisał: > > as far as I can tell temperature changes were not "radical". packed in > solid thick plastic case with no stress.

[neonixie-l] Re: IN-18 Thermometer

I think there are better tubes for a thermometer. There is no symbol tube with same dimensions as IN-18, and a thermometer looks way better when there is a +/- sign - you immidiately know that you're looking at a thermometer, not a clock. I would suggest using Z566Ms (or other 30mm tube with

[neonixie-l] Re: OT: oscilloscope probes

There is a very informative channel on youtube, which teaches about various problems in electronics. This video mentions the earth-to-clip connection and shows the result of forgetting about it. I highly recommend watching his videos, you can learn much about safety while having a good laugh

Re: [neonixie-l] Clock Three JR - able to hook GPS to it?

This "ATmega328P on COM1" is only the port it *tries* to connect to. You should go into "Tools" and then into "Port" and try a different port. Usually COM1 is a default port, I don't really know if any program is using it. But I always see it as avaible and it never is the port Arduino is

Re: [neonixie-l] Re: tubes/valves and Global Shipping

I cannot facepalm enough. It is really easy to find information about what are getters made of. W dniu niedziela, 20 sierpnia 2017 09:40:58 UTC+2 użytkownik Manuel Azevedo napisał: > > After searching around, I got the impression, from several post of others > that got tubes destroyed by

Re: [neonixie-l] Re: tubes/valves and Global Shipping

Numitrons should have mercury levels comparable to traditional light bulbs. Which is exactly no mercury! There is no technological benefit of adding it to any tube other than Nixies and other neon filled display bulbs. You should get your money back along with apologies from eBay. -- You

[neonixie-l] Re: The number of the beast tube

A demonic style clock crowned with this tube constantly cycling at 10Hz rate (so each digit lights once a second) from front to back. That would look interesting. Personally, I don't get the "collector" thing. It's nice to have something unique, but if you're not willing to use it, it is just

[neonixie-l] Re: OT: Eagle is now subscription-based

I think a good alternative with a license which won't cause any trouble is KiCad. I've used it for some time and it is far from great (comparing to Altium Designer I use at work), but it certainly does the job, is not very awkward to use and most importantly - as open source software the

[neonixie-l] Re: OT: Lateral thinking: Cheap SMT reflow oven...

For me, 0805 parts are easier to solder than through hole. The board can lay flat and resistors aren't running away from their spots, there is no wire bending to lock them in place before soldering. SMD soldering is tidier. Plus, when I'm making my prototype PCBs at home, SMD = less drilling.

[neonixie-l] Re: Nixie Clock in Mr. Robot Season 3 promo

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[neonixie-l] Re: New nixie power supply released - NCH8200HV

Wow, this looks incredible. How hot does it get under load of 10x IN-12 in free air? -- 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] Re: Dolam LC-7

W dniu wtorek, 18 lipca 2017 00:53:24 UTC+2 użytkownik Tomasz Kowalczyk napisał: > > I'd like to explain one thing: PIE invented LC-1 and LC-2 in 1963 (or > 1964), and in 1965 PIE was renamed to Dolam. So it is basically the same > company, if we can speak about something resembli

[neonixie-l] Re: Dolam LC-7

Thanks alot. So the whole point is to create background lightning by using flash, but at the same time, the exposure time should be longer than with usual photo taken with flash. I'll try it when I find some space for such "nixie photographing chamber". W dniu wtorek, 11 lipca 2017 15:05:31

Re: [neonixie-l] Adjusting this schematic for a 300V output

Thanks, it gave me more knowledge about routing around the inductor and feedback trace. While I was using different chip, it still could potentially have problems with improper feedback routing. Making a circuit on perfboard has one advantage - traces are usually made from wire or a healthy

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