everal years ago, I started simplifying my life a bit, and I sold some
>> spare tubes that had been gathering dust for years. Then, my MOD 6 clock
>> was involved in a remodeling accident (covered here when I was looking for
>> some replacement tubes). Fortunately, I was able to replace
How much were 7971's selling-for back in 2001, or whenever you got them ?
Today I see them around 200 USD; I paid 80 USD back in 2017 when I built my
8-tube clock.
Long ago, as in the 1970's, I think PolyPaks was selling surplus 2-tube
modules for 8 USD.
On Saturday, May 25, 2024 at 11:01:41 AM
Be aware it's temperature *compensated*, not temperature controlled, so it
will operate best if you minimize the temp changes. Temperature
compensation is also done inside devices like the DS3231.
If you use it for a clock, it will be reasonably stable. I have a nixie
watch that uses the
t/565022565965/
>>>
>>> On Monday 13 May 2024 at 11:07:22 UTC-4 Nicholas Stock wrote:
>>>
>>>> https://www.ebay.com/itm/166758859027
>>>>
>>>> Not my auction
>>>>
>>>> Cheers,
>>>>
>>>>
t;>
>> On May 9, 2024, at 8:37 AM, Nicholas Stock wrote:
>>
>>
>> Hi Greg, 6000-93- on the side. So no P number as I've seen on others.
>>
>> On Thu, May 9, 2024 at 8:31 AM gregebert wrote:
>>
>>> Are there any markings, part numbers, etc that
Are there any markings, part numbers, etc that indicate this tube has a
different phosphor ? I suspect it could be an ultra-rare engineering sample.
Most of the NIMO tubes I've seen, which isn't very many, have 31 in the
part number (P31 phosphor), though I have seen two with '92' in the part
4.5mA wont be a problem for a 1.5K (or smaller) SMT resistor, because the
power is 30mW (or less). I guess the 3-terminal IN-13 has a much better
behavior than the 2-terminal IN-9.
On Tuesday, May 7, 2024 at 12:51:09 PM UTC-7 Mac Doktor wrote:
> Forgot to include this. It may be helpful or it
These tubes draw quite a lot of power. I've only worked on the IN-9, and I
recall it needed close to 20mA to get a full glow, so 1-2 watts is the
right ballpark. R1 & R2 will be around 100mW worst-case, so 0805 should
work.
SMT resistors put a lot more of their heat onto the PCB than a
I've tried depoisoning a few of these 6844/5031 tubes with zero success,
even at high current (20+ mA). They get hot, but wont clean-up. Whatever
contaminates the surface of the cathode is rather stubborn. Perhaps it's an
oxide; many of these failing tubes have a black haze inside the tube,
is the type of burn in I have experienced as well.
>>
>> Not just on the small one you have, but on the various sizes.
>>
>>
>>
>> Michail Wilson
>>
>> 206-920-6312 <(206)%20920-6312>
>>
>>
>>
>> *From:* neoni...@googlegroups.co
Well, if people pay $50,000 for a digital image (fancifully called an NFT)
from Bored Ape Yacht Club, I suppose anything is possible.
At least with the tube you actually get something tangible.
On Wednesday, April 10, 2024 at 10:33:52 AM UTC-7 Mac Doktor wrote:
>
Any clues to why some messages get flagged as pending, and others don't ?
This isn't the kind of group that gets into controversial or offensive
topics, unless perhaps you attempt to glorify modern LEDs.
On Tuesday, April 9, 2024 at 1:12:07 AM UTC-7 Grahame Marsh wrote:
> Hi Y'all
>
> Please
Ever since I got a clearly marked 5031 nixie, I assumed the others with the
same shape with no visible marking were also 5031's but there apparently
are other numbers such as 6844 and HB-106.
I too have several dead ones, and I often wondered if they had been
circulating in Ebay-land as
I've had battles with some of the strain-reliefs in the past. If they dont
break coming out, they often will when going back in so best to get some
spares if you can.
I'm not sure who adopted the IEC power connectors first, but they deserve a
Nobel prize in my opinion.
On Friday, April 5,
ast few years? I'd be
> interested in the project if I had some!
>
> On Mon, Apr 1, 2024, 5:24 PM gregebert wrote:
>
>> Right now it looks like there will be 3 different PCB's: One for the HV
>> power supply, one for a single I-95, and another for 2-4 IEL-0-IV (I hav
not much help with the design. I'd love to use my
> displays though.
>
> On Thursday, March 14, 2024 at 1:43:24 PM UTC-4 gregebert wrote:
>
>> I'm finally at the point I have time to work on a design for my
>> Soviet-era electroluminescent displays. I have 2 types, the
e.com/file/d/1SvZFT0Ix38PpcBTwWniY5Ow4kFfds62K/view?usp=drive_link
>
> On Thu, Mar 14, 2024 at 10:43 AM gregebert wrote:
>
>> I'm finally at the point I have time to work on a design for my
>> Soviet-era electroluminescent displays. I have 2 types, the smaller
>&
use LTSpuce for analogie simulations where many different
> positive and negative voltages are present as my skills ate inferior when
> it comes to electronics, I especially did this when figuring out how to
> design coupling stages and driving stages for the A-201 Polyatron some
> years
I store most of my tubes in metal ammo boxes, with plenty of bubble wrap.
IN-18's have the softest pins in my collection
On Friday, March 29, 2024 at 11:29:49 AM UTC-7 Dekatron42 wrote:
> They sometimes came like that when sold years ago here where I live as
> they were just delivered in
OwwwI'm really tempted because the seller is just a few streets away
from me.
On Thursday, March 28, 2024 at 3:51:49 PM UTC-7 martin martin wrote:
> Not my listing, but good price and damn cool:
>
>
>
r ways of doing things while
> simulating.
>
> Tom
>
> On Sat, Mar 23, 2024 at 11:41 AM gregebert wrote:
>
>> Just curious to know how many of you run logic and/or analog simulations
>> on your designs before doing a PCB, or if you do any prototyping.
>>
>&g
Just curious to know how many of you run logic and/or analog simulations on
your designs before doing a PCB, or if you do any prototyping.
Since I'm a longtime designer of IC's, I rely heavily on simulations:
ngspice for the analog sections, verilog for the entire PCB (logic, FPGA if
any, and
odecorner.com/satanvision/>
> <http://www.cathodecorner.com/satanvision/>
> These projects need to be built, if only to teach their builders a lesson.
>
>
>
> David Forbes, Tucson AZ
>
> On Mar 11, 2024, at 10:51 PM, gregebert wrote:
>
> I'm sure we've all be
I have a large clock with about 300 NE-2 bulbs that I built in 2013. Most
of the bulbs glow normally, but about 4 or 5 have a slight flicker and have
done that for many years. I also have 2 dead ones I need to replace (yeah,
that's what I said 10 years ago...).
So from what I've seen it's not
Crypto prices should be easy to displayisn't that just a random number
?? ;-]
On Wednesday, February 28, 2024 at 4:49:00 PM UTC-8 Alan Tan wrote:
> This would be perfect if it can display crypto prices with the ability to
> select a set of coins and currency :)
>
> On Wed, Feb 28, 2024
post, but no such luck!
>
> Jeff
>
> ---- Original message
> From: gregebert
> Date: 2/19/24 10:56 PM (GMT-06:00)
> To: neonixie-l
> Subject: Re: [neonixie-l] Helping Nixie Tubes Fire in a Darkened Room
>
> 885-890nm ? That's infrared. If the LEDs are always-on, then I
885-890nm ? That's infrared. If the LEDs are always-on, then I'm glad
you're using IR instead of UV because it's much less harmful (perhaps
harmless ?) to materials and humans/pets, etc.
BTW, those are really interesting tubes. I dont think I've ever seen tubes
with a solid/opaque anode.
On
I had a similar problem with a different WiFi device, in this case it was a
wireless camera. When I got my new WiFi router from my new ISP, I set the
SSID and password to be the same as the previous router, so that it would
be a "seamless" transition. Well, for most WiFi devices (laptops,
Probably a good thing I'm retired and on fixed-income now, otherwise I
might be cranking on a 6-tube clock with CD47's. Those things are real
monsters.
On Monday, February 5, 2024 at 5:04:54 AM UTC-8 Richard Scales wrote:
> I managed to resist - despite the almost overwhelming hoarding
I wouldn't build a separate depoisoner; just build-in to your clocks.
I've had very few issues with IN-18 poisoning. If your tubes have been
sitting around unpowered for years, they shouldn't be poisoned and should
be ready-to-use. My IN-18 clock runs about 16 hours per day, and at night
it
t;>>>>>> could have used an ESP32. I just wanted something with a lot of pins
>>>>>>>> to
>>>>>>>> handle driving the 28 cathodes. I'm not using a timing interrupt at
>>>>>>>> all.
>>>>>
Great job on the mechanical section, Marcin. These look like
production-quality items, not something that was 3D-printed in a rush.
On Tuesday, December 19, 2023 at 12:54:54 PM UTC-8 Mac Doktor wrote:
> On Dec 19, 2023, at 3:50 PM, Nicholas Stock wrote:
>
> Thanks for that Shaun, Marcin's
I've never had problems with tubes failing to ignite, perhaps because I use
higher-than-minimum supply voltages, typically around +200VDC. My first
clock uses 340V.
On Thursday, November 30, 2023 at 1:46:25 PM UTC-8 Jeff Walton wrote:
> Give me the glow, Nick!
>
>
--
You received this
UV light source, such as from an LED ?
On Wednesday, November 29, 2023 at 6:43:48 PM UTC-8 Jeff Walton wrote:
> I've recently come across a situation where I have some tubes in a clock
> that are being directly driven and are having trouble starting when the
> room is darkened but light right
I have 12 of these tubes for a future project, so I am very interested in
seeing this work. Do you have any details which pin numbers on the 3L01I
are connected to the circuit ? I think the voltage for focusing needs to be
adjusted.
Does the size or shape of the "dot" change when R43 or R44
Nice! How far away from Denver are you located ? I wonder if the signal
strength is an issue. And if you're a time zealot, being 2000 miles away
means your time will be about 10msec late due to propagation delays.
Doggone it, radio signals and fiberoptics are so annoyingly slow
On
Make sure the holes for the display pins are larger than minimum; I made my
own footprint for the SP-151 and it was difficult to get the pins fully
aligned when trying to solder it in. Larger holes makes it much easier to
insert the display for soldering.
Also beware of the *glasshole*, as I
n the rest so it doesn't suffer from slowdowns.
>> I've had to introduce a delay to slow it down to a 1ms refresh!
>>
>> Craig
>> On Wednesday, 1 November 2023 at 15:47:33 UTC gregebert wrote:
>>
>>> Multiplexing might not be possible in certain software environme
1:57 AM UTC-4 Craig Garnett wrote:
>>>
>>>> Increasing the HT gave me 10mA and looks pretty good but is this an
>>>> issue in the photo?
>>>> It only occurs in the multiplexed tube.
>>>>
>>>> Thanks
>>>> Craig
>&
On Friday, October 27, 2023 at 1:38:06 AM UTC-7 Craig Garnett wrote:
> Thanks gregebert
>
> My HT is a 12V module and is adjustable but the tube spec says 170V so I
> left it at that.
> Are you saying that it's safe to increase the HT to get maybe 10mA?
>
> Craig
>
> On Fr
My concern is that over time as the tubes age your HV supply voltage might
be too low to ensure proper ionization. If it's not adjustable, you can
boost it with a series DC supply such as a wall-wart transformer or a small
isolated DCDC converter. Anything from +12 to +24 should work fine, and
NICE FIND !!!
Based on the size-comparison with the DIP ICs/resistors, these look like
large displaysmaybe 2 inches tall ? If they really are that big then
you definitely want to make a gizmo, probably a clock, with these. It looks
like they are direct-drive, and since the IC's appear
None of my 7971's has aged enough for the segments to get flaky; my clock
went into operation in 2017. Knocking on wood.
I've seen 2 types of incomplete segment/numeral illumination. On my
IN-18's, it's cathode poisoning for the months-digit and that clears-up
within a few days of the new
en with a very low current that is always on.
>> Some tubes were doped with Krypton 85, a radioactive gas, e.g.
>> https://www.nixies.us/bwg_gallery/122p224/
>> On Sunday, October 8, 2023 at 12:13:47 PM UTC-4 gregebert wrote:
>>
>>> Can you do some bench-testing to
Can you do some bench-testing to see if the segments fully light with a bit
more voltage ?
I collected current-voltage (I-V) data on all my 7971's so I can check them
for aging effects.
On Sunday, October 8, 2023 at 6:01:55 AM UTC-7 guus.assm...@wolmail.nl
wrote:
> Hello Jim,
>
> If you
74xx TTL devices have a rather high input-low current, on the order of 1mA,
so you should use a much smaller pulldown resistor, say 100 ohms, or
perhaps none at all. Logically, it should not be possible for more than 1
output to get driven low on the 7441, but that only applies if all
a diffusion
> pump, which will get you below 1 micron
> I don't think I've yet seen any of the nixie makers talk about exactly the
> sort of hardware they use, Just glimpses in an occasional camera shot.
> Do you reckon it's what Dalibur and these other gents use?
>
>
>
.
On Thursday, September 14, 2023 at 9:24:05 PM UTC-7 Miles Thatch wrote:
> Ok, that makes more sense. So in that case High Vacuum is required to
> evacuate then.
>
> What sort of pump would I need to be looking for to achieve that?
>
> On Thursday, September 14, 2023 at 5:41:36 PM UTC
jority
> of the gaseous impurities before back filling with neon/penning gas mixture?
>
>
> On Thu, Sep 14, 2023 at 2:41 PM gregebert wrote:
>
>> OK, that's once the tube is pressurized with the desired gas. However, to
>> cleanse the tube of impurities, it must be baked-out an
gt; I was using the following excerpt from this book. Is it wrong or am I
> getting something mixed up?
>
> On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote:
>
>> I think you mean 10-50 microns (which is 1000 timer lower), not 10-50
>> Torr. One atmosphere of p
I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 Torr.
One atmosphere of pressure is 760 Torr (760mm Hg).
I've seen neon-sign texts stating the need to get below 1 micron for proper
bombarding, and I imagine nixie tubes are similar.
On Thursday, September 14, 2023 at
I'm not a fan of multiplexing nixies because of the additional current that
can lead to shorter lifespan. Multiplexing was common when components for
driving tubes were expensive and tubes were plentiful; today it's the
opposite. As long as the tubes dont run 24/7, you will probably get a lot
a few special character display nixies
>> like the in-12 tubes. More experimentation than anything. I've seen a gent
>> on Youtube make one in his garage.
>>
>>
>> On Monday, August 28, 2023 at 1:56:37 PM UTC-4 gregebert wrote:
>>
>>> I did a lo
I did a lot of research about 15 years ago when I was thinking about doing
neon art. There are 3 really good books (The Neon Engineer's Notebook, Neon
Techniques, and The Neon Superguide) and I recommend you read all 3
cover-to-cover. Though not particularly for nixies, there is a lot of good
The joke here in the US is that gasoline has been priced at xxx.9 cents
per gallon for as long as I can remember, which makes the ".9" financially
meaningless, though it's believed by marketing dorks that there is a
perception that a gallon of gas costing 4.999 is a lot cheaper than 5.00 .
On
Unusual gizmo. I see that it's "backwards", so you need to project onto the
backside of a screen. From the video it appears to have a built-in lens
because the characters were nice and crisp, not blurry. Definitely would
make a neat clock if you had 4 or 6 of them.
On Saturday, August 19, 2023
g just fine, tested up to 250V.
> I may add a shunt or a change the AMeter if needed.
>
> Regards,
>
> Benoit.
> Le mardi 2 mai 2023 à 23:17:56 UTC+2, gregebert a écrit :
>
>> I've used a few different flavors of these cheap digital meters
>> (0-500VDC, 120VAC, 300
Paul - How much insertion force is required for the MillMax pins ? Do you
have to use needle-nose pliers on each lead, or can you plug-in the tube ?
What about removal ?
I have a future VFD project with Soviet-era tubes that have leads, and
havn't decided on solder vs socket.
On Wednesday,
You can find them on Ebay (nixie socket pins). I use them on all my
projects.
[image: 50pcs Nixie/VFD Tube Socket Pins 1mm Gold Plated IN-12 IN-18 IN-8
QS30-1 ZM1040 - Picture 1 of 5]
On Wednesday, August 2, 2023 at 8:36:08 AM UTC-7 Benoit Tourret wrote:
> Hello,
>
> I am searching for female
Sounds like the CRT-related stuff is fine (congratulations, BTW), and you
have issues with the DAC. Have you checked the linearity of the DAC ? The
best way to start is to run all DAC codes, starting from 0 and incrementing
to the top, and verify the waveform is a stair-step. I suggest leaving
The manufacturer "cheated", because they only display in increments of 5
minutes. So, with 4 bits you can get just over 1 hour.
I use 4 BCD thumbwheel switches in my upcoming alarm clock, so that
burned-up 16 bits. But since I read them thru a serial interface that is
shared with other
20 years ? Amazing. How is the phosphor holding up after 20 years ? Do you
dim the CRT (ie, with a PIR sensor or manually turning-down the brightness)
, or just let that run as well ?
I have an 8SJ31J CRT clock kit I bought from an overseas seller (it
wouldn't surprise me if they plagiarized
ly, rightly so...
>
> I must be missing something very simple here...
>
>
> Il giorno sabato 17 giugno 2023 alle 15:54:35 UTC+1 gregebert ha scritto:
>
>> I see a +5 v supply going to the filament supply, but there is no mention
>> of that being isolated like the 12
I see a +5 v supply going to the filament supply, but there is no mention
of that being isolated like the 12V_isolated supply. I suspect there is
missing isolation somewhere. The filament is biased near the cathode
voltage, which is several hundred volts negative.
On Saturday, June 17, 2023 at
Adding series resistors also reduces the current spike during power-on.
Hard to say what fails first with VFD's; ones that I've seen such as the
displays on kitchen appliances which run 24/7 show phosphor degradation
after a few years. If you frequently power-cycle the filaments, then you
> but there is a set of 6 matched GR114/CD47s (will sell only as a set)
> loads of NIMOs
Well, that's going to be the auction of the century.
On Tuesday, May 30, 2023 at 10:06:59 AM UTC-7 Nick wrote:
> Thanks for asking, but I really don't know yet. There's a HUGE number of
> tubes to go
Nice find. I hope you are still in LA and have time to visit Apex Surplus.
On Sunday, May 28, 2023 at 6:48:43 AM UTC-7 martin martin wrote:
> Greetings all,
> I was helping a client in a curios place in downtown Los Angeles called
> Fairfax. The 1966 vintage HP 3439A 4 digit meter was sitting
I found a 3-legged surge arrestor awhile back (looked exactly like a NE-2,
but with 3 leads and 3 electrodes), but was unable to get any visible glow
from it (up to 500 volts) so I assume it was intended for higher voltages,
and perhaps had a different gas or pressure. I salvaged it from
They also chose to make an actual pin-base like a traditional vacuum tube;
not a trivial accomplishment. Time will tell if they have something that is
manufacturable and reliable.
On Monday, May 22, 2023 at 10:48:15 AM UTC-7 MichaelB wrote:
> No, but it's a nice looking tube!
>
> On Monday,
My take on this is if you need to cut costs, the 10-cent microcontroller is
definitely the way to go. It's quite amazing how much compute capability
this thing has for the price.
For me, though, I like having the ability to remotely login thru VNC using
WiFi, use my favorite pile of free Linux
I've never been comfortable with software doing really tight-timing loops,
especially if you need timing resolution well-below 1usec. I'll definitely
look into it more. My biggest concerns w/ software implementations are
interrupts and precise knowledge of the execution time for each
I started by doing an analysis of how much energy I needed to run the watch
(which means you need to decide on which nixie tube to use, how many of
them, and how much display-time between charges), then research the
batteries available. Next, you have to decide how to control it, and the
d glow.
> those tubes are very nice with the "normal" 5, much better than the IN-4.
> should be nice on a 6 digit clock with a decatron for tenths of a second.
>
> Le mercredi 26 avril 2023 à 00:37:49 UTC+2, gregebert a écrit :
>
>> Looks good. I've gotten very fond of th
the stranded copper wire. One of the most frustrating things and
> almost impossible to clean the strands well enough for the solder to wet
> and make a reliable connection.
>
> Randy
>
> On May 1, 2023, at 4:58 PM, gregebert wrote:
>
> Usually when I cant solder som
Usually when I cant solder something it's because there is too much surface
oxidation. Some of it gets so bad that rosin-based flux wont dissolve it,
so the next step is to scrape it off with sandpaper, or a dremel tool.
So far, the worst I've encountered are
- Oxidized copper leads on bulk
Looks good. I've gotten very fond of the inexpensive digital meters on Ebay
and started putting them in many of my projects.
On Tuesday, April 25, 2023 at 10:16:21 AM UTC-7 Benoit Tourret wrote:
> [image: 20230425_170205.jpg]
> Here is the first try for my testing devices.
> My HT power
I watched an Ebay auction about 10 years ago for a lot of 4 XM1000 tubes;
in the final seconds it went for over 1600 USD. I like their flat-screen.
Too bad they are so rare.
Eric - What is the difference between XM1000 and XM2000 ?
On Tuesday, April 25, 2023 at 12:28:11 PM UTC-7 Tidak Ada
I think that was a follow-on patent to make the single-character NIMO tube
into a multi-character version. Some of the sales literature shows a
4-digit display. Neat idea, but by then 7-segment LEDs were getting a lot
cheaper and led to the death of NIMO, Nixie, Numitron, and
I've only seen 2 types of functional failures in 7971's
- One completely-dead segment (A gift to me; that's how I got started
with 7971's)
- Adjacent segments shorted together (it just happened one-day on my
8-tube clock w/o warning; very peculiar)
I have one exhibit-only device
, April 22, 2023 at 8:24:45 AM UTC-7 gregebert wrote:
> There was a standard 10-pin interface on video monitors back in the
> 1980's, so you probably have that. I know the video, vert-sync, and horiz
> sync were on the connector. Check pin 7; I recall that was for power and
> usuall
There was a standard 10-pin interface on video monitors back in the 1980's,
so you probably have that. I know the video, vert-sync, and horiz sync were
on the connector. Check pin 7; I recall that was for power and usually had
a fuse on the PCB board. You should be able to find a pinout on the
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 shoul
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, gregeb
I'm really happy with my HP16500A, and they are reasonably priced if you
shop around. About 10 years ago I got mine with two dual-channel cards
(100Mhz/200msps) and two logic analyzer cards (OK, dont laugh50Mhz / 80
channels) and probes, pods, and manuals, for about 250 USD 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
Historical mix of assembly techniquesPC board (looks single-sided),
point-to-point components on sockets and terminal strips.
Does it have that wonderful aroma of conformal coating often found in
vintage equipment ?
Too bad it doesn't have 6 or 7 dekatrons instead of 5. Would have made a
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
I hope you have better luck with IN-1's than I did...I found them to be
very unreliable.
You can always put them in a microwave oven..
https://www.youtube.com/watch?v=AYUMy0P560k
On Sunday, April 16, 2023 at 6:54:18 AM UTC-7 Jasper nagle wrote:
> thanks if the clock gets better one day
I use a mains-powered 2.5VAC center-tapped transformer for my NIMO clock,
and apply a DC bias to the center-tap. Basically the same as your approach,
but not running at 100kHz. The DC bias comes from a DAC (with an OP-amp
buffer), so I can use software to control the offset, rather than a pot.
Are there any patterns/themes in the pending items that make those postings
potentially suspicious, such as words or phrases ?
I remember back in the 1980's, many email and USENET users such as myself
would deliberately add words to our postings to clog-up the spy servers
purportedly used by
gular CRT?
>
> On Wed, Apr 5, 2023 at 1:19 PM gregebert wrote:
>
>> now the BIG question..how long will the NIMO tubes last ?? I've done
>> a limited amount of runtime on mine, less than 50 hours, and I can already
>> see very faint phosphor burn with a UV lamp. My anod
itched to the green neon indicators, which I've ordered some
> time ago at aliexpress.
> Same type as gregebert use, I guess. I've mounted them a bit too far from
> the center.
> The nimos are dimmed based on a LDR, so I have to pwm the indicator bulbs,
> to sync to the nimo brightnes
nal white phosphor ?
>
> On Tuesday, April 4, 2023 at 9:33:26 AM UTC-6 gregebert wrote:
>
>> I'm using green NE-2 bulbs. Internal phosphor is white; glows green when
>> energized. The lifetime isn't as long as gas-only bulbs, so be sure to
>> mount on a plug-in card.
>&
wrote:
>>>
>>>> Nice to see one more 6 digit Nimo clock!
>>>>
>>>> There's at least one other 6 digit Nimo clock that was shown on Youtube
>>>> about a year ago: https://www.youtube.com/watch?v=JA1oeqavMg8=3s
>>>>
>>>>
For those of you who like tinkering with gizmos, there's a 3rd series from
Tim that's being posted on
youtube: https://www.youtube.com/watch?v=Za-GyTt729M
For those of you unfamiliar with Tim, he did a series of shows for TV,
similarly named as *The Secret Life of Machines* about 30 years
This might help. It's the source-code for 3D-printed collar for IN-18 tubes
and I have 14 tubes of different manufacturing dates that fit just fine.
//
// Copyright (c) 2016 Greg Ebert
//
// Generate pin-collar for IN-18 tubes
// By setting nrow & ncol, any number of copies can
// be
dmit looks better then I had imagined on a numitron clock.
> See the video and be well!
>
> https://youtu.be/dkOwaZvVQrg
>
> Regards,
> -Moses
> On Wednesday, March 8, 2023 at 3:08:56 AM UTC-8 gregebert wrote:
>
>> Very interesting. Others who have multiplexe
IN-18's are also very reliable; no failures in my 14-tube clock after 7
years, though they are susceptible to cathode poisoning.
On Tuesday, March 28, 2023 at 1:36:15 AM UTC-7 Audrey wrote:
> Z566M might be a tiny bit cheaper but no, IN-18s are a good price.
>
> On Mon, Mar 27, 2023, 9:04 PM
You can estimate battery life by knowing the capacity and the power drain;
in my case the battery was a 3.7V Li-ion, rated at 1100mA-hr.
If there are 4 nixie tubes, drawing 2mA at 160V, then each tube requires
320mW. Which means 4 tubes will need 1.28W.
The battery above is about 4 watt-hours
One caveat about using one of the dual-primary windings as an isolated
supply for the HV is that the current is limited. As the load current
increases, the output voltage decreases rather quickly. Even when using a
transformer well-below it's rated VA output, the output falls.
I used this
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