[neonixie-l] Re: Replacing vintage AC cord

I've had good luck just buying an extension cord and chopping off the female end. They're available in all sorts of configurations, including the three-wire zip cord you described, and are often cheaper than the cost of the desired wire alone if purchased by by the foot. The molded plug looks

Re: [neonixie-l] Re: Need some Nixies? Not my sale

one count in the 7th digit with my Fluke frequency reference. I don't hold on to it because of the Nixies, but because it's a damn good piece of test equipment. ~~ Mark Moulding On Tuesday, June 8, 2021 at 10:40:43 AM UTC-7 nickja...@gmail.com wrote: > I have a couple of HP RF si

Re: [neonixie-l] Way off topic...tachometer circuit..

speed (3/rev for a 6-cylinder?). ~~ Mark Moulding On Thursday, August 12, 2021 at 7:04:53 AM UTC-7 bung...@gmail.com wrote: > It's a charge pump. VR1 fixes the pulse amplitude so the tach is not > sensitive to battery voltage. C2 determines the charge per pulse and the > meter avera

[neonixie-l] Re: Estate sale in Huntsville Alabama 26th-28th according to Nixie Clock Fan Page at Facebook!

Link? On Tuesday, August 17, 2021 at 10:37:18 AM UTC-7 Nick wrote: > Just to note that there are an enormous number of nixies there, plus > clocks and whatever... all very high quality... > > The auctioneers and family are aware of the value of these items and are > being advised by neutral pa

[neonixie-l] Re: Looking for some info about RCA DTF numitrons

Although I've successfully used them in a couple of projects, I've never been able to locate a data sheet for them - does anyone have any pointers for this specific tube? Thanks! ~~ Mark Moulding [image: WoodClock (Small).JPG] On Tuesday, October 26, 2021 at 2:21:21 PM UTC-7 Dekatro

Re: [neonixie-l] Re: Looking for some info about RCA DTF numitrons

lding something with the last of an unobtanium part, knowing that it won't need replacement in my lifetime. ~~ Mark Moulding On Wednesday, October 27, 2021 at 11:02:53 AM UTC-7 Pramanicin wrote: > Er, you're not the only one with a stash of these :) > > They are nice looking t

Re: [neonixie-l] Re: Looking for some info about RCA DTF numitrons i was lucky to have some too only ten of then

Oh, that's a pretty clock! Considering that the tubes hover around $35-$50 each, $240 isn't a bad price. On Wednesday, December 15, 2021 at 5:07:32 AM UTC-8 Bill Notfaded wrote: > Numitrons are awesome! Driving them is so much easier than Nixie we all > can relate to that. I especially like

Re: [neonixie-l] New to arduino and nixie projects, looking for advice

he tube full on. It still worked for a little while even with the envelope broken (this was at night, so I had the brightness way down). ~~ Mark Moulding On Friday, April 1, 2022 at 4:43:51 PM UTC-7 Codi Wiersma wrote: > Thanks for the suggestions. I have an in tank speedo that I was going

Re: [neonixie-l] New to arduino and nixie projects, looking for advice

ilures (no seconds digits, though), using PWM on the Output Enable for brightness control. Perhaps I should expand my horizons and try some of these drivers; I might look at the TLC5923 - it's the bigger brother at 16 channels instead of 8. ~~ Mark Moulding On Saturday, April 2, 2022 at 3:27

Re: [neonixie-l] Re: Gloat and request

d it. 50 years old, with that kind of accuracy, is pretty incredible to me! HP built really good equipment in those days. ~~ Mark Moulding On Tuesday, July 26, 2022 at 8:16:24 AM UTC-7 gregebert wrote: > I know the feelingI was at a local surplus shop a few years ago and > spotted an

Re: [neonixie-l] Re: Nixie Clock - Direct Drive HV5530

20 mA each) is no problem. I have many thousands of hours on several different clocks, over more than a decade, with zero failures of either the drivers or the tubes. (Occasionally, I'll lose a power supply...) ~~ Mark Moulding On Monday, August 15, 2022 at 7:46:03 AM UTC-7 nixiebunny wrot

Re: [neonixie-l] Re: Nixie Clock - Direct Drive HV5530

though. I'll have to look into the TPIC6b595s - those sound useful... ~~ Mark Moulding On Wednesday, August 17, 2022 at 1:29:36 PM UTC-7 LB wrote: > I’ve had great experience with the TPIC6B595s, I used them to drive a > whole bunch of miniature bayonet style bulbs for a clock us

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

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: > Hi there. I'd be potentially interested in a numitron kit! > > On Wed, Nov 16, 2022 at 5:26 PM Moses wrote: &g

Re: [neonixie-l] Any interest in IV-9 numitron clock kit?

t 4.3 volts due to the drop across the -595 outputs. I was a regular at Burning Man for quite a few years, but last went in 2017. Now that it's happening again, I think we'll go back next year. Glad you had a great time! ~~ Mark Moulding On Thursday, November 17, 2022 at 5:55

[neonixie-l] Re: Easy latchup demonstration using Numitrons!

Interesting! I guess I've been lucky for the inputs to not have been floating, or perhaps the decoupling caps I've usd have been enough, because I've never seen that particular problem. (Now that I think about it though, I wonder if that's what's going on in another circuit I'm building? Lo

[neonixie-l] Re: DTF104B Group Buy

an official RCA data sheet for that tube? Any chance of posting it somewhere? Here's a clock I made using DTF-104Bs. [image: WoodClock_sm.JPG] ~~ Mark Moulding On Saturday, February 25, 2023 at 12:16:42 PM UTC-8 Nicholas Stock wrote: > Fellow enthusiasts. I have a vendor (someone I

Re: [neonixie-l] Re: Slightly OT: Where do I find the black woven tape used in electronics?

As Marcin Adamski recommended, I've found Tesa 51608 to work well for wrapping wiring harnesses. It's available on Amazon . ~~ Mark On Monday, December 11, 2023 at 1:01:26 AM UTC-8 andybiker wrote: > Search on Amazon for "car wiring tape" or "car h

Re: [neonixie-l] Numitron in a vehicle?

C2051) that does all this, and can be daisy-chained to any length serially. A single serial output pin (as from a Basic Stamp, for example) can then drive the entire display set. I've posted all the design files (PCB, schematic, and C code) on the SmartSockets Yahoo group... ~~ Mark Moulding

[neonixie-l] 700V regulator tube (N.O.S.) at Electronic Goldmine

http://www.goldmine-elec-products.com/prodinfo.asp?number=G18732 ~~ Mark Moulding -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, sen

[neonixie-l] Re: RS232 line driver

ll work, the DS275 might do. It's an 8-pin chip that steals power from the TxD of whatever you're plugged into to provide the negative swing for your TxD. ~~ Mark Moulding -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post

[neonixie-l] Lots of Dekatrons!

It's been up for a few months now, but I just stumbled across the WITCH computer restoration project. The Harwell WITCH is currently the oldest working digital computer in existence. http://www.youtube.com/watch?v=vVgc8ksstyg ~~ Mark Moulding -- You received this message because yo

[neonixie-l] Re: Nixie Speedometer.... in EE Times

d the vehicle was a Taylor-Dunn electric vehicle with essentially no suspension, over a dry lake bed. Many other failures ensued, but the real-time sonar display (did I mention the dust? white-outs are common) worked perfectly the whole time. ~~ Mark Moulding -- You received this message be

[neonixie-l] Re: Relay-controlled Nixie Clock

e the number wheel mounted and have a pinball machine clock - maybe with a nixie remote repeater display... ~~ Mark Moulding -- 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 i

[neonixie-l] Re: resistance of filament warm vs cold

I've been following this discussion for a couple of days now, and thought I knew what was going on, but I just went to my bench a physically put my hands on an IV-6 VFD tube. The filaments for these tubes are specified at 0.85-1.15 Vrms (nominal 1V), with a current draw of 50 mA. Note that the

[neonixie-l] Re: resistance of filament warm vs cold

On Sunday, December 8, 2013 10:50:20 AM UTC-8, threeneurons wrote: > > Put a new battery in your calculator: 1V/0.05A = 20 ohms > >> >> Oh - duh! I think the rest of the discourse was correct. (Sadly, no calculator was used - I guess it's my brain that needs the new batteries...) ~~ Mark -- Y

[neonixie-l] Re: resistance of filament warm vs cold

There's a type of enamled wire that's intended to be soldered through. It used to be used for the Vector Wiring Pencil, and is still available intended as transformer wire. I bought the smallest spool I could (1 pound - at 30 gauge that's nearly a mile!), and still use the Vector Pencil for s

Re: [neonixie-l] Hewlett Packard Power Cord

ide connects to the chassis in any way.) ~~ Mark Moulding > As you can see there are two versions of the same cord with Hot and > Neutral reversed. The HP version is "backwards". > > I paid through the nose to get two of the HP type from eBay a couple of > years ag

[neonixie-l] Re: Really??

This just came across my in-box. I was looking at that "Candy-Ferrari" clock (for $10k). I think eBay's database must have screwed up somehow... [image: Capture.JPG] > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this

[neonixie-l] Re: What does your shop look like?

This isn't it, but it looks very similar and I suspect it has essentially the same guts. Less than $25 including shipping - how can you lose? https://www.ebay.com/itm/323530347214 ~~ Mark Moulding On Tuesday, July 9, 2019 at 11:42:27 AM UTC-7, Paul Andrews wrote: > > Do you have a

[neonixie-l] Re: LED Word Clock

a very rugged, tolerant, and long-lasting technology. I've never had one fail except when horribly abused. One actually broke open on my art car at Burning Man, and continued to function *without the glass envelope* for several hours!) ~~ Mark Moulding On Thursday, July 25, 2019 at

[neonixie-l] Re: OC White Big Eye 5 for soldering my nixie tube projects and lighting my lab area

ding. For real quiet, though, I use just my bench lighting (which is strips of 12-volt LEDs driven by a linear power supply), and a small cheap magnifier with a regular incandescent bulb. ~~ Mark Moulding On Friday, October 18, 2019 at 1:14:50 PM UTC-7, Bill Notfaded wrote: > > Not exact

[neonixie-l] Re: Nixie sighting

Also a multiple-Decatron counter at about 12:06... ~~ Mark Moulding On Sunday, December 29, 2019 at 2:53:32 PM UTC-8, Terry Bowman wrote: > > *What the Future Sounded Like* (twelve seconds in): > > https://www.youtube.com/watch?v=8KkW8Ul7Q1I > > > Terry Bowman, KA4HJH > &

[neonixie-l] Re: Nixie Calculator Bundle...

history, if it's not beyond hope of salvage (which I'm pretty sure it's not)... ~~ Mark Moulding On Tuesday, February 25, 2020 at 2:46:14 PM UTC-8, Pramanicin wrote: > > > https://www.ebay.com/itm/Wang-Scientific-Calculator-360SE-With-Nixie-Tube-Keyboards-/264646644101?&_t

Re: [neonixie-l] updated lab/workshop pic

. No need, though; I just re-capped mine and it works perfectly. ~~ Mark Moulding On Monday, April 20, 2020 at 3:55:04 PM UTC-7, Pramanicin wrote: > > Here’s part of my current madness.. > > > Sent from my iPhone > > On Apr 20, 2020, at 15:37, martin martin > > wrote

Re: Re: [neonixie-l] MPSA42 or MJE340?

than doing all the steps and curves simultaneously, it steps through the process, so it just needs a little switching supply rather than a big complex system. It's very flexible, and the associated PC software (required, but free to download) really makes it easy. No affiliation, just a s

Re: [neonixie-l] Different color VFD tubes?

to be noticeably dimmer). The illumination profile of these does look a lot like VFDs; especially, notice the decimal point - it's big, round, and uniform. I wonder if the shielding plate surrounding each of the "filaments" is performing the same function as the screen in a Nix

[neonixie-l] Re: Nixie Tube counter

pe would be avoided. ~~ Mark Moulding On Thursday, June 18, 2020 at 3:48:16 PM UTC-7, Derek Schuetz wrote: > > Hi Everyone > > I want to make a 2 Digit Nixie Tube Counter that is battery powered with 3 > buttons (+1,-1,Reset). pretty much want to create the same idea as below >

Re: [neonixie-l] What is this HV gadget?

does work well for that purpose. ~~ Mark Moulding On Thursday, June 25, 2020 at 8:05:38 AM UTC-7, celzey11 wrote: > > Supposedly they were designed for testing neon sign components, a quick > way to see if a tube failed or not in the field without powering the whole > thing up. --

[neonixie-l] Re: VFD filament resistance when hot/cold?

att resistor would work easily. So, short answer: hang a 56-ohm resistor in series with each filament, and run them off the 5-volt supply. (You're supposed to use AC for the filaments for uniform brightness, but in my experience with single-digit tubes like the IV-17, it didn't make a wh

Re: [neonixie-l] DTF104B datasheet or experience with these?

3/32 - dimmest visible 5/32 - level 2 10/32 - level 3 18/32 - level 4 24/32 - level 5 32/32 - full brightness ~~ Mark Moulding On Friday, August 28, 2020 at 7:33:33 AM UTC-7 William Lee wrote: > I've run these at 5V in the past without issues, but no harm in starting > lower an

Re: [neonixie-l] First LED displays

been available since the 1920s, I would have thought it to have been available much earlier. ~~ Mark Moulding On Friday, December 18, 2020 at 8:38:45 PM UTC-8 nixiebunny wrote: > The Monsanto MAN-1 was just about the first. It was a calculator sized > single digit in a 10 pin flatpack wit

Re: [neonixie-l] New soldering station recommendations...

@gregebert described, either a paste mask or just a conservative drop of solder-paste-with-flux on each pad is all that's needed, and everything sort of self-centers when the solder mounts, due to the surface tension. ~~ Mark Moulding On Wednesday, December 30, 2020 at 10:35:10 AM UTC-8 gr

[neonixie-l] Re: Erratic Harrison clock

after each previous pulse. Statistically, there could still be a noise event in that last 67 uSec, but in practice this seems to have completely solved the problem. After running for months, my bedroom clock is still within 1 minute of my (presumably always correct) cell phone. ~~ Mark Mouldi

Re: [neonixie-l] Re: Nixie tube clock ghosting issues

On Wednesday, May 21, 2014 8:33:17 AM UTC-7, nixiebunny wrote: > > I wonder if the Arduino background program is causing the problem? It > does something to keep ocntrol of hte machine. Does anyone know what > that is? I don't. > Actually, there is no background process running on the Arduino;

[neonixie-l] 80's era VFD clocks for heap at Electronic Goldmine

pear to damage the units any). The one currently listed on the web site is correct. I know these aren't exactly in the spirit of dedicated home-brewing (except for making a case), but they are perfectly functional clocks, somewhat vintage, and cheap! ~~ Mark Moulding -- You received t

[neonixie-l] Re: Noritake Introduce Futuristic Nutube Vacuum Tubes

with the recommended plate voltage and some experimentation with the plate resistor, it might be a reasonable amplification stage. ~~ Mark Moulding -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop r

Re: [neonixie-l] Re: Transistor ID...

> > This sounds somewhat similar to the now very old, and obsolete clocks used > in automobiles around sixty years ago. They worked like this. A spring > would drive the clock through an escapement. As the spring unwound, two > contacts would make, and a small electromagnet would wind the sprin

[neonixie-l] $19,000? Really???!!!

https://www.touchofmodern.com/sales/thingmade/gyroscopic-illuminated-figure -- 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

[neonixie-l] Re: High current 1.5A x150V power supply design for 100 IN9s

you're done. If you're feeling adventurous, you could hack into the circuit and just run directly off the DC bus that it already has internally... ~~ Mark Moulding On Tuesday, February 9, 2016 at 8:58:41 PM UTC-8, Phill Scan wrote: > > Hi all, > I hope you didn't click on

Re: [neonixie-l] Re: Legal aspects of kits for sale?

> i think there was a famous example a few years ago, when someone who > burned his finger at a hot cup of coffee, made a lawsuit against a very big > fast food chain... > > > Actually, despite the ridiculous sound of that case, it was apparently a real, viable lawsuit; the plaintiff was a wom

[neonixie-l] Re: First nixie clock

lazy, I'll let the auto-router loose, but that's a lot of conditions to be met, and it doesn't happen often. ~~ Mark Moulding On Wednesday, September 28, 2016 at 7:19:29 AM UTC-7, gregebert wrote: > > It's hard to justify in so few words, but you're better off hand-rou

[neonixie-l] Re: NumiQueen IV-13 clock review

peration with 20g vibration from 5-500 Hz - these things were designed to be installed in fighter jets. Add in the fact they're readable in direct sunlight, and one can see why it's only been in the last decade or so that the Minitron displays are finally disappearing from airpla

[neonixie-l] Re: Nixie-style EL display

htest I was able to get, though, they still weren't suitable for daytime use, and the lifespan is essentially linearly related to the current flow, so I decreased the usable life (the light output tapers off) to only a couple of hundred hours in this mode. ~~ Mark Moulding On Wednesday,

Re: [neonixie-l] Radioactive Nixies - Study

This cute little one just showed up in my in-box - $40: http://www.goldmine-elec-products.com/prodinfo.asp?number=C7061 ~~ Mark Moulding On Tuesday, March 14, 2017 at 10:02:40 AM UTC-7, Paul Andrews wrote: > > What is your opinion of this one: > http://www.ebay.com/itm/Open-sour

[neonixie-l] Re: mason jar numitrons

great at night (but were invisible in daylight - a fundamental problem with EL wire). The trickiest part was threading the digits (which were supported on coat-hanger wire) through the necks of the bottles; I cheated a bit by cutting a slit on the back side. ~~ Mark Moulding On Tuesday, Janu

[neonixie-l] Re: Numitron clock driving question

lifespan curves are basically asymptotic to infinity at 70% voltage. Also of note is the specified ruggedness of these devices: rated impact acceleration (while operating!) of 200G, vibration 5-200 Hz 20G, etc. The Russian tubes are not specified as highly (15,000 hrs operational life - I have

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

but in practice under load closer to 1.3. This means that if the incoming line is a bit high - say 120 instead of the nominal 117, the voltage at your capacitor will be somewhere between 155 and 170 volts - still OK for this application, but unwise to forget about. ~~ Mark Moulding On Thursday, Ma

[neonixie-l] Re: Help with electroluminescent displays

ot for an heirloom clock. To switch the high voltage, I used sensitive-gate TRIACs such as the MAC97A6, and referenced one end of the high-voltage supply to my logic ground. That sounds a bit scary, but it worked just fine. ~~ Mark Moulding On Friday, July 27, 2018 at 12:56:03 PM UTC-7, grege

Re: [neonixie-l] Re: How many people would be interested in 3 digit Nixie car gauges?

I did something similar to this. I machined brass 1-1/2" pipe couplings to make the standard gauge bodies, and 3D-printed a support structure to clamp the dial glass (I used polycarbonate) and support the tubes - three tubes per gauge. The big secret though was not using Nixies - I used Numitr

[neonixie-l] Re: Would anyone mind looking over my schematic?

unt might make sense for this. ~~ Mark Moulding On Monday, September 3, 2018 at 4:21:08 PM UTC-7, Thomas Kummer wrote: > > The schematic is for a Nixie boost gauge. Using IN-17 Nixies, and an > Arduino Nano. The second schematic is for two NE lamps for Boost and > vacuum. The NE lamp

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

My designs, which use an AC wall-wart for timekeeping (backed up by a DS1302 for power outages) all ran fast until I put in code to ignore all transitions for 16.5 mSec after seeing one (a full AC cycle is 16.67 mSec, at least in the US). This seemed to completely cure my running fast problem

[neonixie-l] Re: old fashioned pcb

Ah, the truth hurts. "Old-fashioned" though it may be, this is the style of PC board that I design most of the time - I probably crank out half a dozen or so of these a year (and the number seems to be going up). Although I have a surface-mount oven (commercial purpose-built - not a modified

[neonixie-l] Re: Adding audio clips to a clock...

egradation even in devices that are nearly 20 years old, which tends to support their claimed 100-year retention time. ~~ Mark Moulding -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receivin

Re: [neonixie-l] Re: Adding audio clips to a clock...

uper easy to use. I see that they now have a purely digital device (the ISD3900). I haven't used that one; it seem like that provides the flash-based solution I mentioned previously all in one chip, so it can also be a no-software add-on, with much longer (64-minute) recording times. ~~ Ma

[neonixie-l] Re: IV-15/DM160 variable brightness nightlight

;t make very good amplifiers either.) For a nightlight application, I think I'd consider one of the many available VFD displays. They're equally easy to drive (a bit easier, actually - the drive voltage is often quite a bit lower at 24 volts or so). and they're available in a

Re: [neonixie-l] Pinball score reel clock

opto-interrupter at the zero position, so each digit would verify and if necessary re-calibrate every time it displayed a zero (also at power-up, of course). ~~ Mark Moulding On Monday, February 18, 2019 at 12:10:08 AM UTC-8, Nixcited delighted wrote: > > You really won’t want to hear o