Re: [neonixie-l] Fluorescent starter teardown

> For those who know is that a neon or gas lamp inside? The other unlabeled > component looks likes a cap. The gas in a starter can be either argon (purple glow) or neon (orange glow) – I've seen both. It's fairly simple, the discharge heats up the electrodes, one of which is a bimetallic

Re: [neonixie-l] NixiChron Slow to Acquire Satellites

> Well, as soon as I emailed out, the GPS started blinking fast and the > NixiCron is back in business... GPS receivers have a concept of an "ephemeris", which is basically the orbits of the GPS satellites in view and information about them. It uses this for a "warm start", so once it gets

Re: [neonixie-l] Your vote please...

> Do you want to part with one of the larger scopes? High bandwidth isn't an > issue here but I do need an X/Y display. Scope clock kits are out of my price > range. I simply don't want one bad enough. I'd be happy to part with some to a good home. Shipping can be expensive, but maybe you're

Re: Analog graphics - was Re: [neonixie-l] Your vote please...

> I've been working on a vector generator. The first iteration is about 20k > vectors/second but supports lines and points only (no circle segments or > anything fancy yet). Just finished routing the PCB. I'm very interested in that. I'm also working on an analog vector generator (op-amp

Re: [neonixie-l] Your vote please...

> I was given this RCA possible trainer scope. Date unknown. > Restore to its full glory? > Sell on the Bay > Turn into a scope clock? > > I have no idea if it's electrostatic or magnetic deflection and I have very > little experience in tube repairs. It's very likely electrostatic

Re: [neonixie-l] Off topic, but it's clock and it's old and it's digital...

> I found this old digital clock several years ago and I'm wondering if anyone > has any ideas as to its origins. While it works, I could use a schematic.. It looks like it may be a homemade one-off, however it seems pretty straightforward, and shouldn't be too much of a chore to reverse

Re: [neonixie-l] New find!

> > Beautiful! What are you using to generate this image? I'm using an AdaFruit ItsyBitsy M4 Express with its two analog outputs to drive the X and Y inputs. The text is being generated using the old Hershey vector font. > I dont see a connection to the Z-axis (or did you use connections

Re: [neonixie-l] 4-digit IN-18 clock project

> Good to know that it also should work with lower voltages. > I remember using the SiSB46DN too. I switched to a MOSFET with SOIC-8 package > because for me it's easier to solder. But I paid too little attention to the > Vgs(th) value. In my experience, people tend to pay too much attention to

Re: [neonixie-l] Scope Clock SC200C

> Most DMMs have 10Meg input impedance, so you can put a 10meg resistor > in-series with your meter, and measure double the voltage. Note that many resistors are rated at only 150V, and aren't suitable for high voltage service like this. There are, of course, resistors with sufficient voltage

Re: [neonixie-l] Interesting all-transistor clock with analogue dividers

> Ananlogue dividers??? Do you mean perhaps hetrodyne mixers? No, they're more like pulse accumulators with thresholds: after N pulses, the threshold is reached and it dumps the accumulator capacitor and pulses the output. - John -- You received this message because you are subscribed to

Re: [neonixie-l] VFD filament drive

> I wonder why there should be no air gap? Air gaps lower the inductance, but stabilize it and store energy in the gap. Working forward from this, you generally find flyback type circuits use gapped cores, and others generally instead opt for best coupling and highest inductance. - John --

Re: [neonixie-l] VFD filament drive

> > I'm designing a clock for DT-1704 tubes and am stumbling at the filament > drive stage. They want 1.6V. I want to power it from 5VDC. I've tried wiring > them in series, but there is a noticeable brightness gradient if I do. I'm a big fan of series resistors (one per tube). It's

Re: [neonixie-l] Red Coated Tubes

> I picked up a ZIN-70 tube from Millclock a few weeks ago, and after powering > it up, I thought it would look nice with a red coating like that on the > Z568M. I assume the coating is some kind of lacquer, but I'm not completely > sure. Anyone know what it is and how it can be applied? I use

Re: [neonixie-l] Best boost converter up from 5v?

> Yea simple question, I want to make a nixie clock with 4x IN-12's and I want > to keep the circuit simple. > Something akin to this: > Youtube.com > > > Not sure if I should provide 12v to my circuit and use a linear

Re: [neonixie-l] Anyone tried using these 16 x 14 segment VFD ILV3-16/14L-R tubes for anything yet?

> I assume the 4.1V DC is filament voltage and the Ua/Ug 24V DC is the anode > and grid voltage now after looking at it for a little longer. I'm not really > a regular VFD guy but I guess I will be more now. I have no idea what the > pin out for these is yet? I also can't find any

Re: [neonixie-l] Need 2 Z5680M …Yes it was the DANG CAT!

> I did just buy another full NIM crate yesterday, all Ortec. Because eight > full ones and additional 150 modules just weren't enough I guess. Man, I > pity the fool who gets to dispose of my estate when I croak. Likely my > nieces... We used to call them CAMAC crates and NIM bins. - John

Re: [neonixie-l] Re: Nixie porn

> and documents. I have no idea if it still works but the pot and switches need > to be replaced. A few old game systems (need to fix the Vectrex). > We need to remember each other in our wills. As for my buddy, he has way more > cool stuff than me. I almost traded him that book

Re: [neonixie-l] OT: How to convert composite video into TTL?

> I'm not saying don't try it - it would be very educational, though best if > you can get hold of a schematic. But a lot easier to get hold of an NTSC > monitor, I think. The people who maintain arcade machines have been scraping > up all the large colour monitors recently but I doubt they'd

Re: [neonixie-l] LM-324 op amp

> That actually sounds kind of like the old military practice of grounding > unused TTL inputs through a 1k resistor. I thought the military practice was to tie unused inputs high (instead of grounding them) through a resistor: TTL takes less current to pull high than to pull low. - John --

Re: [neonixie-l] IV-19 Pinout confirmation

> Ignoring the physical dimensions, I will point out that if you plan to use in-board pin connectors, you'll want to allow a central opening for the exhaust tip. If you're using above-the-board type connectors, it's less likely to be an issue. - John -- You received this message because you

Re: [neonixie-l] Magnetic deflection yoke winding

>>> Has anyone created new magnetic deflection yokes for crts that are >>> obtained without them? Seems like an ideal application for 3d printing >>> but yet a daunting project. >>> >>> Are there any books, recommended project examples, or other resources >>> that might help in yoke design? >>

Re: [neonixie-l] Magnetic deflection yoke winding

> Has anyone created new magnetic deflection yokes for crts that are > obtained without them? Seems like an ideal application for 3d printing > but yet a daunting project. > > Are there any books, recommended project examples, or other resources > that might help in yoke design? The tubetime.us

Re: [neonixie-l] Driving an IV12 Vacuum Fluorescent

> I need to drive a single IV12 vacuum fluorescent display from a BCD to 7 > segment chip. > I could use level shifters like the CD40109B or CD4504B but they don't have 7 > devices in one chip (4 and 6) and only drive 18 volts which might work. Maybe a 7446, which can support up to 30 volts? -

Re: [neonixie-l] Nocrotec Blue Dream Nixie Transformer Nixtra-18.????

> Tim, we now have eBay and AliExpress where we can select even cheaper parts > and not have to pay shipping... > Did Radio Shack ever offer you 100 resistors for $0.99? > But yes, I miss the physical stores too! > And most of all that means: I need a part, go to the store, and continue with >

Re: [neonixie-l] What's the largest neon bulb commercially available?

> > Not counting the novelty bulbs (flickering flame, Flamingo, Heart shape) is > there an E27 type neon bulb available? There are several that I know of: NE-56 (J9A) and NE-30 (J5A) in an S-11 bulb, and NE-34 (R2A) and NE-40 (R6A) in an S-14 bulb. - John -- You received this message

Re: [neonixie-l] Recommendations for a digital microscope for soldering etc.

> Digital microscopes came up in the thread "Photoshot from a defective IN-4 > Tube". > > I took a look on Amazon. When I got to the ones with hi-res video displays my > jaw dropped. I had no idea that they existed. > > This is EXACTLY what I need for through-hole work. It brings SMT within

Re: [neonixie-l] NIMO

> My original intention was that I would monitor the anode-current for all 6 > tubes, and I could detect a partial filament burnout by checking for > lower-than-expected current. Software could isolate the failing tube, then > shut down the clock. Unfortunately there is a source of noise in the

Re: [neonixie-l] NIMO

> I've finished the Protoboard for the NIMO tube. > > And, again, a short video. > > https://drive.google.com/file/d/1zqwuOtwQdO6CUYCdWOrgNX02n50pVdhv/view?usp=sharing > > What are you using for a high

Re: [neonixie-l] Argon Piranha

> I happen to have a few of the NHK GD412-200V spark gap tubes. Nice! >I accidentally thought they were neon bulbs and installed them on the > Wemos Nixie Clock kit from Ian at Nixieclock.biz (a > great kit btw.) Oops, did they light? > What voltage is needed to

Re: [neonixie-l] CRT colors

> Standard colo(u)rs I have seen are Green (P1, P31), white (P4), blue (P7, > P11) and orange (P12, P19) > > https://en.m.wikipedia.org/wiki/Phosphor > > > There are some exotics (like red) that allegedly exist, but I’ve never found > a CRT with a

Re: [neonixie-l] Anyone interested?

> Are they thermally-activated, or is it something ingenious, like > visible/infrared detection ? They're actually ultraviolet detectors. - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop

Re: [neonixie-l] Has anyone had any experiance with the Microchip HV5630 drivers?

> I was digging around mouse for serial to parallel converters when I ran > across these Microchip drivers HV5630 @ > https://www.mouser.com/datasheet/2/268/20005855A-1512677.pdf. > > With two of these you could drive 6 digits without polling and have 4 extra > lines left over for ne-2 lamps.

Re: [neonixie-l] Discovered an old advertisment

> I’ve purchased many of the tubes which were ‘pulls’ and they were all wrapped > in newspaper from 1970-1972 - I still have the newpaper wrappings. A seller named "USquarters" sold a vast number of tubes wrapped in newspaper like that, that's where I got most of mine, years ago. - John --

Re: [neonixie-l] Restore or scrap for parts?

> I was cleaning the office with all my "spare time" and found this! > > Date code 1974! > > Should I restore or scrap for a tiny VFD clock? If you end up scrapping it, I'd be interested in the IC or the board if you don't want to remove the IC. - John -- You received this message because

Re: [neonixie-l] Sperry / Beckman SP-101 Panaplex display

These might work well. https://www.goldmine-elec-products.com/prodinfo.asp?number=G24679 - John > On Mar 24, 2020, at 4:22 AM, Richard Scales wrote: > > The only thing I would say is that the pins on SP-101's are really

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

> I'm mostly interested in the keyboard because it will cost me about 200 USD > to find a usable keypad and have the keycaps engraved. > If I can get the case, keyboard, tubes, and sockets for 150USD, I'm very > happy. Note that the original Wang keycaps are not engraved, they're just clear top

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

Hmm, if no one wants the control unit, I could pitch in for it. - John > On Feb 25, 2020, at 7:14 PM, Dylan Distasio wrote: > > I would go in on one as well, but would also appreciate help running with the > Pi, although no obligation! > > On Tue, Feb 25, 2020, 6:47 PM Nicholas Stock

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

> What is contained in the control unit vs the desktop unit ? Is this similar > to a compute-server and remote terminals ? The control unit held all the smarts. The desktop units were just keyboards and displays. I remember seeing boards covered with diodes, I guess they were simple discrete

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

> https://www.ebay.com/itm/Wang-Scientific-Calculator-360SE-With-Nixie-Tube-Keyboards-/264646644101?&_trksid=p2056016.l4276 > > > > Now here's an interesting

Re: [neonixie-l] P12 Phosphor CRT

> OMG that purple tube is awesome. Anybody got any for sale ? The P11 phosphor is more blue in person. If you want purple, P16 is a logical choice. There are some 5ZP16 in the wild (magnetic deflection, though): https://www.atneagoods.com/index.php?main_page=product_info_id=117248

Re: [neonixie-l] NIMO Tubes on ebay

> Well, currently, it will drive regular (non-PDA) small electrostatic > deflection CRT's. I will let my partner in crime chime in if he wants to add > anything more specific I'm quite interested. I have a few such boards and am designing some of my own, this is a subject dear to my

Re: [neonixie-l] Argon Piranha

> Mouser.com or allied.com. Their new number is A9A. Allied.com has the better > price in quantity. A9A is a neon filled lamp (old code NE-2E). AR-9 / K4A is the only argon one of that small glass (T2 bulb) wire-lead style I'm aware of. The new style numbers for argon bulbs: AR-1 = W1A (big

Re: [neonixie-l] Argon Piranha

> Where can you get the NE-2 style lamps? I can't even google them! They're tough to find. There was an AR-9 (K4A in the new numbering system), but I don't know of any vendors (Chicago Miniature (now VCC) used to make them as part #333). It shows a 50 hour life vs 25k for neon filled lamps.

Re: [neonixie-l] 16-seg word clock

> 85 hours of 3D printing Instead of 3D printing the diffusers, I might use diffuser material like Lee Zircon 810, 811, or 812. It’s easy to cut with a laser cutter, scissors, or a knife. - John -- You received this message because you are subscribed to the Google Groups "neonixie-l"

Re: [neonixie-l] Got this scaler today...

> I don't know much about it and hope I can get it running! > > https://www.ebay.com/itm/decade-scaler-nuclear-industries-E-110-A/283673597924 > > I have one just like it. Fortunately, it'll power up without

Re: [neonixie-l] 7 Segment Common Anode Display

> Here is a schematic diagram that I just whipped up. It uses the SPI signals > to shift data into the anode and cathode drivers. > The software needs to write two bytes (digit then segments) to the SPI port, > then write LOW then HIGH to the LD/ signal. You can also use an HT16K33 chip which

Re: [neonixie-l] Driving NEO-5000 and SP-352 displays

> Questions - is this a reasonable plan? I found a datasheet for the SP-35x > parts and it recommends 350uA per segment. Is it reasonable to double this > for a 50% duty cycle? Also, I'm a little puzzled about what I'm supposed to > do with the "Keep Alive" cathodes on these things. How

Re: [neonixie-l] Open to suggestions !

> Please send me an idea or two for the best enclosure for my odd little > vertical clock. Dimensions are 8" tall, 2" deep, 2.5" wide. The controller > board (lower left of pic) is 3.5 x 1.75. I'd be tempted to cut the bottom off of a largish bottle and place it inside. Similarly, you could

Re: [neonixie-l] new clock to share!

> This is version my of a vertical clock. Using the board from our friend Ian > at nixieclock.biz Also want to thank David P from our group for helping > with the PCBs! > I chose to hand wire the rest. Soon will be nicely enclosed in an acrylic > tube! Runs on WiFi so easy to setup. > I

Re: [neonixie-l] OT: What are single sided screw clips/fasteners called in English?

> I've been looking for single sided screw clips like these, but I don't know > the proper English word for them, so I only find the "double-sided" ones that > are supposed to go over the edge but I can't used those in all positions > where I need them - so what should I look for? I generally

Re: [neonixie-l] Can’t stop coloring tubes!

> A friend of mine bought some lights with purplish paint on them and of course > when she plugged them in they turned pink because there was much more red > than blue. I have one set of lights in my collection that are true violet. > You have to be in a dark room to even see them but by

Re: [neonixie-l] High current driver for 16 segment LED display

> > I'm having trouble getting this to work. Everything appears to be good up to > the gate of the NDP6020P, then it is not switching.That scope image is > QuickPrint2.png. The other image is at the drain. The reason for this circuit > is that the HK16K33 can't supply enough current to drive

Re: [neonixie-l] Jazzed this weekend project fixed HP 3456A bench MM!

> It's pretty good on most voltages. Now I need a good reference for > resistance. I've been waiting for months for a new dmmcheckplus but > apparently the seller has sold all his business to someone else. They > useVishay type PTF56 for ohms reference. Goldmine Electronics has some nice

Re: [neonixie-l] Bipco units

> You can find all the documentation here... > > http://www.decadecounter.com/vta/articleview.php?item=888 > I also uploaded some older docs (including one for the alphanumeric BIP-5971:

Re: [neonixie-l] Bipco units

> Those Bipco things aren't documented, so they're pretty useless. There's documentation out there: https://worldpowersystems.com/archives/tube-datasheets/Datasheets/Burroughs-1061K/11.JPG A.J. has some

Re: [neonixie-l] Russian multimeter translation

> I do like the look of these multimeters, but the biggest challenge for using > them for me would be the 220V input I picked up a 120 to 240V step-up transformer at Radio Shack years ago and use it for many such things. I grabbed a second one on the cheap when they were going out of

Re: [neonixie-l] Powering on HM85 Magic Eye

> I've recently gained an HM85 tube that I would like to power up in a project, > at this point time, purely for aesthetic purposes. I am having a difficult > time deciphering the corresponding schematics, pulled from radiomuseum.org. > If someone could assist, it would be appreciated. Pins 4

Re: [neonixie-l] Dalibor tubes

I don't see the full grid ones available on the site. Nor the argon filled one that showed up in the blog. I did notice that there are some experiments with button stems instead of press seals, I'm interested to see where this goes. - John -- You received this message because you are

Re: [neonixie-l] Re: Odd but cool display

> I'd prefer NE-2 bulbs, but LEDs are much more efficient and easier to drive. LEDs aren’t really much more efficient, especially if you already have an appropriate source of voltage to drive the NE-2s. - John -- You received this message because you are subscribed to the Google Groups

Re: [neonixie-l] Odd but cool display

> Ah -- I also see the "1", "4" and "7" characters take advantage of that > column, for better formed/placed digits. Very cool. Where do you see that? - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and

Re: [neonixie-l] All Toob Dekatron Spinner

> That's a fine looking tube breadboard! Where did you find it? Modul-Bus, they offer breadboard adapters and the like as well: http://www.ak-modul-bus.de/stat/experimentiersysteme.html You can also get tubes mounted in magnetic

Re: [neonixie-l] How's this for a tiny neon pilot!

> It reminds me of some little voltage clipper tubes I bought from a surplus > outfit, and found they look just like little neons, but they light up purple. > I love purple. How is a voltage clipper tube used? They work like many gas tubes, they're insulating until the breakover voltage is

Re: [neonixie-l] How's this for a tiny neon pilot!

That's adorable! It reminds me of some little voltage clipper tubes I bought from a surplus outfit, and found they look just like little neons, but they light up purple. - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe

Re: [neonixie-l] Where to buy tube boxes

> What are people doing with loose tubes in their collections? I've been > wrapping mine in bubble wrap but have been wanting to start putting them in > tube boxes designed to hold them. > > Does anyone know where I can buy tube boxes for relatively cheap? Antique Electronic Supply offers both

Re: [neonixie-l] Hewlett Packard Power Cord

For reference, these are the cords I have: I also managed to chase down where I got them (in 2008, I posted to Neonixie about it): http://www.leedsradio.com/parts-odds.html Look for "Belden/Western Electric cord". They were $10 in 2008, they're

Re: [neonixie-l] Hewlett Packard Power Cord

> Anyone know where I can find a power cord for an old HP Frequency Counter > that I just got. Seems these have been obsolete for a while and Belden > doesn't make them anymore. Someone was making them recently, but I don't remember where I got them (Leeds Radio, maybe?). Bright yellow

Re: [neonixie-l] Re: Tube database?

If it's stored as a table (spreadsheet style) or a database, it should be easy enough to export the data in a simple format such as CSV. Backing up the CSV all over the place isn't difficult, and it could be imported into a variety of spreadsheet or database programs, or a search/mining

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

> 1) is it possible to use a simple H bridge to provide a rough AC drive to > operate the heater? I presume originally it was spec'd for AC rather than > pulsed DC. Yeah, works fine. H-bridge, power op amp, gate driver, whatever. You can use series resistors to adjust the current and reduce

Re: [neonixie-l] Mystery tube

Looks like a spark gap or TR switch, but I suppose it could be a nitrogen laser. > On Apr 9, 2019, at 11:25 PM, Nicholas Stock wrote: > > Anyone have an idea what this is? 4 pins. Doesn’t glow next to a plasma globe > and doesn’t have any distinguishing markings on the base except some hand

Re: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment character

Jan Wüsten has B5971 for €16 apiece. > On Mar 28, 2019, at 10:08 AM, Nicholas Stock wrote: > > Those 5971’s are a bit steep. > > Sent from my iPhone > >> On Mar 28, 2019, at 07:02, Michail Wilson wrote: >> >> Bill, >> >> I'm glad you got the tubes you wanted; however, I am a little

Re: [neonixie-l] ZIN18

> > I am thinking that they are initially wanting to sell their clocks and thus > the proprietary pin-out. It doesn’t seem to be the most practical business > approach but credit for trying to keep the art of nixies alive. This verbiage on their page makes me think they have a driver in the

Re: [neonixie-l] MPSA42 troubles

> My understanding is that a MPSA42 is an NPN transistor and the MPSA92 is a > PNP. My understanding of how an NPN transistor works is that when the base > “P” is turned on the circuit from collector to emitter is shorted. When the > base is off the circuit is open. I’m trying to use the

[neonixie-l] nixie watch build on Instructables

It's a fairly basic and chunky design, but an interesting read: https://www.instructables.com/id/Nixie-Tube-Watch-3 - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe

Re: [neonixie-l] IN-18 Nixie Tubes only partly illuminating

> With the clock fully wired and powered using the same 12V to +200V DC-DC > boost converter, I have set the output voltage to 170V, > > however some of the tube’s digits do not fully illuminate, especially the 8 > and 9, similar to cathode positioning. What I have found is > > that no

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

> I just received some ILC1-1/8 VFD's (large-ish 7 segment Soviet era, approx > 100mm tall) and did some basic testing. > > I was very surprised to see a large current on the grid, on the order of > 30-40mA, whereas the segment current was around 5mA when glowing nicely. > I havn't dabbled

Re: [neonixie-l] NL5441A / B5441A needed to replace damaged tubes from home theft. Source?

> So... I suffered a home theft and one of the stolen items was a custom made > device that used 6 nixie tubes. > While the device was recovered, all of the tubes themselves had been broken. > :( Ouch. > It used (6) NL5441A tubes. I really desire the A version with the smooth top > to

Re: [neonixie-l] Nixie Slot Machine (concept test)

I really like that. I have zero interest in clocks, so I too am always looking for other ways to use and show off nixies (I've done a few art projects with them). The slot machine with the digit and symbol tubes is a great idea, and the 3D effect that nixies have really works well for the

Re: [neonixie-l] B6844A’s 2nd

> i just said they go black in a week? am i missing something? run at a lower > voltage? another resistor thats not in the specs? multiplexed?… i will go > count them, want the black ones too? I'm envisioning an art project where they're only active occasionally for brief intervals. I'll

Re: [neonixie-l] B6844A’s

> If you have ever run across the tube very close to the B5092 but with the > rounded(bullet) front end B6844A > I made a 6 digit clock and it looked real good! > For about one week, then it started to go black, in two weeks all tubes were > black > It came from no mercury in the tubes, results

Re: [neonixie-l] Simple discrete circuit for dimming Nixies with an LDR?

> Using an NE555 would be no problem, I'm using standard TTL for the logic of > the clock itself. I know there is one dimming circuit which uses the NE555, > this one: http://www.mcamafia.de/nixie/ncp_dt/nix_dim.htm but that doesn't > use an LDR. If you use a LDR as one of the timing resistors

Re: [neonixie-l] Filament transfomer current for driving six NIMOs?

> I need help with how much current a regular mains transformer would need for > the center tapped filament winding for six NIMOs. > > The filament for a NIMO is specified at 1.1V AC or DC +/-0.15V at some 0.2A. > The cold resistance of the filament is some 2.1 Ohm. > > Do I need to specify

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

> 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 immune to > this effect. Most of tubes designed to be used in digital circuits were > designed with long times with no anode current flowing.

Re: [neonixie-l] What is this connector called?

Digikey has a variety of very appealing versions. https://www.digikey.com/products/en/test-and-measurement/test-clips-grabbers-hooks/620 The ones pictured look like Pomona Micrograbbers:

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

There are some nice integrated automotive transient and reverse polarity chips available these days that take care of a lot of that for you. - John > On Sep 5, 2018, at 8:42 AM, GastonP wrote: > > I would also add some zener or transzorb, and would be wary of the engine > start-up transient.

Re: [neonixie-l] Still need these tubes for my drug store tube tester. UPDATED LIST

I'm glad you finished it out! I see some vibrator slots are still empty. While I have some vibrators, I don't have the boxes for them. The random phototube is a nice touch. Congratulations! John -- You received this message because you are subscribed to the Google Groups "neonixie-l"

Re: [neonixie-l] Interesting indicator on Ebay

> So is this like a "linear dekatron", or more like a bargraph, ala IN-9/IN-13 ? I was thinking more like a linear pixie tube, like a B9012. - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop

Re: [neonixie-l] Weird dotmatrix Nixie

> Anyone know what these are? > https://www.ebay.co.uk/itm/10-Vintage-flat-numerical-nixie-tubes-on-veroboard-museum-piece-Very-rare/283067992378?hash=item41e82ac93a:g:WNAAAOSw7U9bVPYc > > > Not my auction etc.. etc.. Never seen them before! Wow, I hadn't seen these before either! Looks like

Re: [neonixie-l] My Nixie Clock

> Rather than doing it all with discrete components, have a look at the TI > TXB010x series of bidirectional level shifters. > > They are cheap, come in a range of packaging including soic, and in various > widths, i.e 2, 4, 6 or 8 channels. Those are handy chips (I've used 'em with a

Re: [neonixie-l] Time for my annual (?) question...mostly for David F....

> On a related note, are there any recommendations for a CRT that is known to > be reliable and not easily burned from long-term usage ? > That would influence my choice for a scope-clock kit. The 3RP1 and its flat-face variant 3RP1A are popular choices, they're common and durable (they may

Re: [neonixie-l] Possible Nixie tubes?

> The display on this looks like it's nixie tubes. Looks like 24VAC plus 450 > VDC power required. > > https://www.ebay.com/itm/Thornton-Associates-Inc-DEC-102-Decade-Counter-Decimal-Digits-Laboratory-Unit/232161267621?hash=item360de3cfa5:g:-MQAAOSw-0xYQHPq > >

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

> At the glass company I worked at, most production was for relatively > high-cost / low-volume products. One big exception was a part (something like > BC1237 - I forget the exact number) which was the base + lead assembly we > made for Motorola, used for a 3.58MHz crystal in TV sets. That's

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

> I just bought a dozen 3l01i tubes from Yuriy and if there is anyone in this > group who wants to start a side discussion to share knowledge, send me a > private message and I will start a new google group. I'd send you a private message, but I'm not sure how... In any case, I'm interested.

Re: [neonixie-l] Ever seen this?

> I have a 1CP1, and a 1EP1 in my tube stash. I have those, as well as a 1FP1, and a 1DP11. Here's a pic of some of my small CRTs (1DP1 is top row center, with a Nimo tube to the right of it, and an XM1000 to the right of that): http://www.vitriol.com/images/tech/tubes/crts1.jpg

Re: [neonixie-l] Shady ZM568M listings

Also, cathodes 4, 5, 7, 8, and 9 are poisoned. - John > On Apr 22, 2018, at 8:27 AM, Manuel Azevedo wrote: > > Hi guys, > > Please pay attention to listings like this one: > > https://www.ebay.com/itm/1x-nixie-tube-clock-Z5680M/163008809340 > > They can lead you

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

> I've been using OSHPark to have my designs made up, and they are great, but I > figure I should try a few other manufacturers and recently went to look at > pcbway. So I am wondering if anyone has experience of OSHPark and any other > manufacturer (but particularly PCBWay), and could give me

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

> Can on of my betters on the list advise on whether they see any issues with > using this to test a NIMO tube using a low voltage DC input? It seems to me it should work. The main problems I'd watch out for are overdriving it (an arc in a winding will ruin it), and regulating the voltage.

Re: [neonixie-l] Electron Diffraction CRT

> Here's an odd beauty > > https://www.ebay.co.uk/itm/Cathode-Ray-Tube-Electron-Diffraction-Tube/132570918496?hash=item1eddd7ae60:g:0TsAAOSwCBFavOGv > > I appears to be a demonstration of electron diffraction behaviour. If you > look inside the tube you can see a target in line with the

Re: [neonixie-l] How to mount IN-9 tubes

I'd probably have a flat board of some kind behind them and then use something like plastic wire clamps with foam lining to hold the tubes in place. Similar to how CRTs used to be mounted at the neck. - John -- You received this message because you are subscribed to the Google Groups

Re: [neonixie-l] Safety "on board"

> #3 - Keep electrolytic caps away from heat sources, otherwise they can > dry-out and fail. I use EPCOS caps rated for high-temp applications in > solar-energy inverters. I'm becoming fond of the polymer electrolytics in apparatus I build myself. While they don't have quite the heat ratings

Re: [neonixie-l] Swiss chocolates

> It has much more taste than my old Cigar box Nixie clock. Heh, I used a cigar box for my nixie divergence meter too, but I wrapped it in dryer duct tape. - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this

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