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

On 06/15/2018 07:34 AM, 'Grahame' via neonixie-l wrote: > Hi Kerry > > Are you after a DF kit specifically or would you consider other kits? I > can only help you with this kit: > > http://www.sgitheach.org.uk/scope3.html > > I provide as much or as little as people want up to a complete kit

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

Hi Kerry, If you just want something close to 67.5 volts, snap 8 9 volt batteries together. That will produce 72 volts open circuit but will pull down a few volts under load. If you plan on using it a lot, then you might want to use these batteries

Re: [neonixie-l] Apollo-era NASA computers in dead engineer’s basement

On 07/15/2017 09:09 PM, Jon D. wrote: > > Just saw this article, so I thought I'd share. The basement 'scrap' > included Nixie tube displays. Thanks Jon. Now check out the connecting link about the Apollo 1 fire https://arstechnica.co.uk/science/2017/01/apollo-1-fire-investigation/ Guss

Re: [neonixie-l] Technical question on Fets and MOSFETS...

With FETs, it works naturally, as the conduction channel has a positive temco. The cooler FET has the lowest resistance and so it takes more of the load until it reaches the temperature of the others. IGBTs have a negative tempco EXCEPT for those designed to be run in parallel. In my highest

Re: [neonixie-l] Manufacturing affordable large, new nixie tubes

On 04/20/2017 05:28 AM, Aiden Koh wrote: > I'm sorry if I sound unsubstantial; I had once contacted stem base > suppliers in china, and they do say that they have the product line ISO > 9001 certified, but I have a hunch that they subcontract the orders to > another workshop. The US

Re: [neonixie-l] Video Tipps for Nixie Clocks...

On 04/11/2017 06:14 PM, gregebert wrote: > I encountered problems with light reflecting off the nixies, and it also > washed-out the glow, so I thought the solution was to photograph in > low-light. Attempting low-light photography led to annoying reflections of > light from adjacent tubes.

Re: [neonixie-l] Radioactive Nixies - Study

On 04/06/2017 11:20 AM, John Rehwinkel wrote: >> This cute little one just showed up in my in-box - $40: >> http://www.goldmine-elec-products.com/prodinfo.asp?number=C7061 >> > They have this kit on sale for $10 now: No GM

Re: [neonixie-l] Re: Radioactive Nixies - Study

On 03/16/2017 12:42 AM, 'threeneurons' via neonixie-l wrote: > A few years back, Westdave had just visited his cardiologist, the day > before the TRW swapmeet. He had an exam, that required ingesting some > radioactive "juice". At the swapmeet, a vendor was selling a working geiger >

Re: [neonixie-l] Radioactive Nixies - Study

On 03/15/2017 09:42 AM, Mark Moulding wrote: > On Tuesday, March 14, 2017 at 10:02:40 AM UTC-7, Paul Andrews wrote: >> >> What is your opinion of this one: >>

Re: [neonixie-l] checking for radiation Radioactive Nixies - Study

Be aware that a peanut tube that size will be very insensitive to environmental radiation. I used a tube that size in my area radiation monitors designed to be mounted in high radiation areas. John On 03/15/2017 08:42 AM, John Rehwinkel wrote: >> Electronic Goldmine has lots of Geiger Counter

Re: [neonixie-l] Radioactive Nixies - Study

On 03/14/2017 02:01 PM, gregebert wrote: > Anyone know how the radiation "hazard" of nixies compares to Xrays produced > by color televisions/computer monitors that used CRTs ? > None vs none. As soon as the low level X-rays from TV sets were discovered and became and issue (two different

Re: [neonixie-l] Re: Radioactive Nixies - Study

On 03/14/2017 05:05 AM, Luca Bertagnolio wrote: > Welcome to the fascinating world of radiation, known by little and > feared by most, for no good reason. More people have been killed by > fear of radiation than by radiation itself. This is literally true. Several people were killed fleeing

Re: [neonixie-l] Re: Radioactive Nixies - Study

I didn't include the mantles because most people don't have them. A lot of people use the salt substitute. The Coleman replacement mantles sold by Century and made in India are still quite hot. http://www.neon-john.com/Nuke/century_mantle.jpg Last time I checked, WalMart still carried them.

Re: [neonixie-l] Re: Radioactive Nixies - Study

On 03/12/2017 06:16 PM, Charles MacDonald wrote: > But how many Bananas and Brazil nuts do you keep around. those are the > real home based radiation sources... > > http://www.neon-john.com/Nuke/Salt_substitute.jpg http://www.neon-john.com/Nuke/K40_on_geiger_counter.jpg

Re: [neonixie-l] Re: Why Mercury?

On 03/08/2017 08:15 AM, Paul Andrews wrote: > OK, but how does it reduce sputtering? > Two mechanisms. First, its ionization potential is lower than neon so the atoms have less voltage to accelerate them. Second and most importantly, the mercury ion is MUCH heavier than neon and so

Re: [neonixie-l] Rookie question about driving VFD filament

No, the filaments are tungsten and tungsten has a huge positive temperature coefficient. The ideal drive would be a constant current, voltage capped source. A resistor approximates that quite well. I would not connect them in series for the same reason it's a bad idea to connect vacuum tube

Re: [neonixie-l] Re: Some guy offering Rodan CD47 tubes

You could use the modern version of the old edge-lit displays. A stack of plex sheets engraved with the numbers and edge-lit with LEDs. That would be even more authentic because the numbers would approach and recede as they change values, just like in a real Nixie. John On 02/23/2017 05:10

Re: [neonixie-l] Re: In18 displaying cathode poisoning after 1000hrs or less.

On 02/20/2017 11:44 AM, John Rehwinkel wrote: > Both effects happen: the neon and argon leak out because even though > they're at lower than atmospheric pressure, they're higher than the > partial pressure of neon and argon outside the tube. And, more > intuitively, oxygen and nitrogen leak

Re: [neonixie-l] Re: TI Launchpad free shipping

SUPER!!! Reaffirms my decision to change from Microchip/Atmel to TI. Way to go TI! On 01/21/2017 06:58 AM, Nick wrote: > Just to add, as of now, TI are no longer charging for any of their > development environments, including all compilers etc. i.e. Full function > license keys for all

Re: [neonixie-l] Small run fabrication

On 01/11/2017 01:33 PM, Paul Andrews wrote: > Hi, > > I'm trying to make a case for one of my clocks and started looking at > online fabrication services such as big blue saw. I am basically looking at > designing and fabricating one-offs of some simple acrylic pieces (with cut > outs/holes

[neonixie-l] Some eye candy

http://strattman.com/#! John -- John DeArmond Tellico Plains, Occupied TN http://www.tnduction.com<-- THE source for induction heaters http://www.neon-john.com<-- email from here http://www.johndearmond.com <-- Best damned Blog on the net PGP key: wwwkeys.pgp.net: BCB68D77 -- You

Re: [neonixie-l] Faulty Atmel Microcontrollers from Aliexpress

No idea, though I can't imagine them changing their entire work flow and methods just like that. The blank silicon may come from MicroChip now. John On 12/18/2016 11:34 AM, John Rehwinkel wrote: >> Atmel is what is known as a foundryless manufacturer. That is they have >> hunks of silicon

Re: [neonixie-l] Faulty Atmel Microcontrollers from Aliexpress

On 12/17/2016 03:26 PM, Luka C wrote: > I'm writing this to warn others or ask if anyone had similar experiences. I > purchased a lot of Atmel ATMEGA328P microcontrollers from a seller on > Aliexpress. Microprocessors are one component that you absolutely MUST buy from an authorized

Re: [neonixie-l] TI MSP430 promo...

I'm just getting started with the TMS432 Launchpad and Ubuntu Mint. Their heart still really isn't into Linux but it's a LOT better than a year ago when I work with a C2000 launchpad. The install script treats Mint 16.04.1 as plain Ubuntu 16.04. It has to be installed as root. I thought the

Re: [neonixie-l] NOT another nixie clock!

The C2000 LaunchPad works fine under Linux. Since it looks like the MPS432 uses the same interface, I should think it would work as well. I use gtkterm as my terminal program. Like you, here the W word is a profanity, never to be uttered out loud. John On 10/09/2016 11:06 AM, gregebert

[neonixie-l] Pardon the interruption

Will the guy who made the black magic eyes tee shirts please contact me? j...@neon-john.com? I tossed the envelope and then realized I didn't know who to pay. Thanks John -- John DeArmond Tellico Plains, Occupied TN http://www.tnduction.com<-- THE source for induction heaters

Re: [neonixie-l] How hot should a mosfet get?

d at least. There's not a single device in that box that failed open. John On 09/28/2016 02:38 PM, Dan Hollis wrote: > I thought FETs always fail open, and it was SCRs which always fail shorted. > > -Dan > > On Wed, 28 Sep 2016, NeonJohn wrote: > >> >> &g

Re: [neonixie-l] How hot should a mosfet get?

You might want to look at some newer parts. I'm constantly getting announcements from IR and IXYS about their 60 volt parts that go as low as 10 milliohms. John On 09/28/2016 01:30 PM, Trumpeter wrote: > It's an IRFD220 looks like it's resistance is .8 ohms. > -- John DeArmond Tellico

Re: [neonixie-l] How hot should a mosfet get?

On 09/28/2016 12:40 PM, Trumpeter wrote: > Thank you for this detailed explaination, even though some is over my > head. > > Should I check the resistance between the two joined pins and one of > the two pins on the other side? Could the over heating mosfet damage > other components or will it

Re: [neonixie-l] How hot should a mosfet get?

On 09/28/2016 12:03 PM, Trumpeter wrote: > The one on my newly built kit gets pretty warm. Normal? I'm not an ee > so go easy on me :) > It depends. (always a good answer. :-) My rule of thumb is to keep the maximum junction temperature somewhere between two thirds and three quarters of the

Re: [neonixie-l] Neon Signs

On 05/13/2016 01:57 PM, gregebert wrote: > NEVER use a microwave oven transformer; they are deadly because there is no > current-limiting, and their voltage is probably too low anyways. A MOT actually IS currently limited using the same stray flux technology as neon transformers. If you look

Re: [neonixie-l] Neon Signs

Don't want to sound flippant but they're worth what you can sell 'em for. Watch ebay and see what free pieces of neon go for. recognizable shapes and letters will bring more. FWIW, I get $30 for 9" plain block letters that I've collected. More for script, especially if it says something. $20

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

On 05/07/2016 07:19 PM, Instrument Resources of America wrote: > I would say this. The assembler of the kit bears the responsibility of > EXACTLY and CORRECTLY, assembling and using the kit per the instructions > provided. HOWEVER, the DESIGN, ENGINEERING, QUALITY of the parts > supplied, and

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

On 05/06/2016 07:05 AM, Oscilloclock wrote: > John, that's truly a great write-up, if not very scary. Yeah. If we spent any time in a civil court room we'd probably be afraid to leave our houses. My attitude is "damn the torpedos, full speed ahead" with some mitigation strategies. > >

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

Try to use such a unilateral disclaimer in court. It's been too long and I've forgotten the technical term for the legal principle but essentially it says that unless the disclaimer is part of the purchase contract, it has no effect because both parties did not agree to the disclaimer. You

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

While I'm not a lawyer, I've spent many years working for 2 firms as an expert witness. What will happen after some guy touches a high voltage point, falls off his stool, hits his head on the counter, breaks his neck and is now a quadriplegic is this. You will be served. Usually a work.

Re: [neonixie-l] Shipping to Russia - Recently ?

We used to ship to Russia UPS or Fedex with no problems. No USPS problems. With the turmoil going on between our two countries, it wouldn't surprise me for the USPS to be a pawn in the argument. Shipping with the other two carriers was very easy. They take care of all the paperwork. UPS

Re: [neonixie-l] Noble gas 'Neon' Chemical Symbols

On 03/27/2016 10:56 AM, John Rehwinkel wrote: >> The problem, other than the high radiation, with placing Ra in an >> enclosed vessel is that it quickly reaches secular equilibrium with its >> decay products down to Pb-210. > > Oh, there's another problem. Various phases of the decay chain

Re: [neonixie-l] Noble gas 'Neon' Chemical Symbols

On 03/27/2016 07:06 AM, Tidak Ada wrote: > May it be there is a getter like material that can produce RN, like the > Pb-210 John mentioned? Radium is the source of radon. The problem is its intense radioactivity. Indeed, a gram of radium defines the Curie, the traditional measurement of

Re: [neonixie-l] Noble gas 'Neon' Chemical Sympols

I did leave Rn out but not unintentionally. I'm not sure enough Rn has ever been collected in one spot to fill the letters Rn. If that was possible and the contents added to the tubing, viewing the "Rn" would be your dying wish! Of course, one could sprinkle some Pb-210 into the tube. That's

Re: [neonixie-l] Noble gas 'Neon' Chemical Sympols

On 03/25/2016 05:33 PM, Tidak Ada wrote: > Nice Photo's! What is the size of the signs? What I have is about 70×70 mm. > Tubing 7,5 mm dia. > > John:Thanks for the address! I'll contact them... You're welcome. In the US, tubing comes in 4, 6, 8, 10, 12, 13, 14 and 17mm dia. Those are

Re: [neonixie-l] Noble gas 'Neon' Chemical Sympols

The best neon bender I know is Bill Buth. b...@neonstreet.com. He can fix you right up. His Etsy shop: https://www.etsy.com/shop/BillieBoi He will stay in the tube if boro glass is used. Bill can do that. Kr is totally boring. Xe you'll probably want filled to a high enough pressure that it

Re: [neonixie-l] Re: Dekatron T-Shirt

Done deal. Thanks. If I could make one more suggestion. The shirt with the dual dekatrons, Separate them a bit more. Make 'em, you know, fit the anatomy :-) John -- John DeArmond Tellico Plains, Occupied TN http://www.tnduction.com<-- THE source for induction heaters

Re: [neonixie-l] Re: Dekatron T-Shirt

On 03/24/2016 08:38 AM, Keith Moore wrote: > http://www.cafepress.com/thecourtjester > > Dekatron shirts - http://www.cafepress.com/thecourtjester/11101119 Hey Keith. Love your shirts. I want some. Bt. At 6'7" and around 290 lbs, the 2XL will probably fit my thigh. How about

Re: [neonixie-l] Re: Good B7971s?

On 03/11/2016 05:56 PM, Nick wrote: > It's pretty much impossible to re-gas a nixie, not to mention being > dangerous due to the Hg. There is no danger in the tiny amount of mercury involved. > > I tried doing this with an outgassed tube helped by a really expert > hot-glass specialist. > >

Re: [neonixie-l] Hi, and my Nixie clock app

On 03/07/2016 02:53 PM, Neal Bridges wrote: > Hi! I'm a Nixie fan, and though I've never been lucky enough to own a real > clock, I've recently made an app for the iPhone and iPad featuring Nixie > tubes. It's at apple.co/1RaYQZY . This is a good opportunity to

Re: [neonixie-l] Scope clock in plastic case

On 2/18/2016 8:59 PM, David Forbes wrote: > I expect to offer it as a product soon. I still need to work out the > price. I may offer it as a partial kit with the SMT assembly done, or as > a finished product in a case. I do plan to publish the code and most of > the design files. Please! At

Re: [neonixie-l] Flip Clock with WWVB

On 02/03/2016 12:03 PM, 'Terry S' via neonixie-l wrote: > Got it -- I should have read the description more carefully, I assumed it > wasn't working due to lack of the broadcast time signal. So in reality, you > are good to go. I still think WWVB is unnecessary on a 4 digit clock. I have a

Re: [neonixie-l] Microchip finally buys Atmel

On 01/27/2016 09:22 AM, Nick wrote: > +1 on hating the PIC "architecture". > > I was always an AVR man, then I discovered the MSP430 series... :) Interesting. I plugged MPS430 into mouser and what came up is a large 100 pin chip that is fairly expensive. Are there smaller versions in the

Re: [neonixie-l] Microchip finally buys Atmel

Ahhh, OK. Thanks. Sheds a much different light on things. John On 01/27/2016 11:34 AM, Nick wrote: > The whole MSP430 toolchain is free. You only pay if you want the > slightly better optimiser in the commercial variant which also allows > bigger binaries, however the gnu MSP430 compiler has

Re: [neonixie-l] Microchip finally buys Atmel

On 01/27/2016 12:24 AM, John Rehwinkel wrote: > I did a lot of research and looked at many architectures before > settling on the Atmel AVR line, with their strong flash support > (Atmel was a big flash memory manufacturer), their $79 demo board > that also served as an in-circuit programmer

Re: [neonixie-l] Re: Scope Clock rising from the ashes

ir own cases. > > I plan to eventually produce a generic board that works with any tube > size, but first I want to get the one done that helps me unload all > those 3RP1 CRTs I have! > > On 1/13/16 10:08 AM, NeonJohn wrote: >> Is this going to be like the original scopeclo

Re: [neonixie-l] Re: Scope Clock rising from the ashes

Is this going to be like the original scopeclock, in the clear acrylic case? If so sign me up. I'll find the money tree somewhere... :-) John On 01/13/2016 08:55 AM, dixter wrote: > wow David,,, please put me down for one when you are selling > these... thanks > dick bell > > On

Re: [neonixie-l] NixieStat Thermostat is closer to reality

Here's my opinion as Chief Engineer and majority owner of a company with several products on the market. *) Lose the solid state relays. They will surely be failed in short order the first time a service call is initiated. HVAC guys like to short low voltage wiring to look for power. Faster

Re: [neonixie-l] Re: NixieStat Thermostat is closer to reality

On 01/03/2016 10:37 AM, Keith Moore wrote: > Perhaps open source it? If you want to make money, perhaps work out a > license for the software. Oh absolutely open source it. Hardware and software. Open source built Fluxeon (my old induction heater company) and now it's building Tnduction (my

Re: [neonixie-l] Just show you guys what I made

Remarkable accomplishment! John On 12/12/2015 11:55 PM, Chaos Hydra wrote: > Hey guys, if you remember I was asking questions about IV-17 tubes filament > voltage problem. Though there is still some contrast problem, the project > is finished. Just want to share this cool baby with you guys!

Re: [neonixie-l] Re: Rant: Shipping to Germany

Same here and for the same reason. We've had induction heaters sit for 3 weeks in german customs. John On 11/26/2015 09:38 PM, taylorjpt wrote: > I no longer ship to Germany because it takes a long time or gets lost > all together and then the German customers open up ebay and paypal > cases

Re: [neonixie-l] Re: Linear power supplies for nixies

On 10/02/2015 03:07 AM, Dekatron42 wrote: > Can anyone direct me to a document that says that it is allowed to sell an > electronic apparatus that uses a primary winding as a secondary winding - I > spent a lot of time Googling this and I can't find anything. I'm truly amazed that anyone

Re: [neonixie-l] Re: Linear power supplies for nixies

you are correct. it is perfectly safe to use dual primaries (or secondaries) for isolation. The wire is triple-coated with enamel, plastic and another layer of enamel. While I have a multi-thousand dollar Topaz 10kVA Ultra-isolator on my development bench, we require something cheaper for

Re: [neonixie-l] Neon sign for sale

On 08/24/2015 11:48 AM, Quixotic Nixotic wrote: The owner of this burger joint took it to pieces in 1997. The sign is now for sale for US $18,000. Sale includes the green roof tiles and white porcelain panels. The person selling claims $7,000 has already been spent on restoring the neon.

Re: [neonixie-l] Neon sign for sale

Would it have cost 7,000 bucks to have that neon tubing replaced? Or did they go to the wrong person? If all he did was have the glass replaced, that's kinda high. For plain double stroke block letters, figure $35-50 a letter, depending on size. Some benders price by the foot and number of

Re: [neonixie-l] Art of Electronics, 3rd Edition, is finally out...

On 04/13/2015 11:52 AM, 'Ian Vine' via neonixie-l wrote: When I studied Electronics at Manchester University back in 1985 that was one of the mandatory texts. I can't remember the price back then but it was pretty steep around £30 I think. My copy is looking a bit battered now so maybe a

[neonixie-l] Interesting Nixie use

On a home-made X-ray machine http://walyou.com/homemade-x-ray-machine John -- John DeArmond Tellico Plains, Occupied TN http://www.fluxeon.com -- THE source for induction heaters http://www.neon-john.com-- email from here http://www.johndearmond.com -- Best damned Blog on the net

Re: [neonixie-l] Neon Xmas present...

On 12/31/2014 12:47 PM, Nick wrote: Apparently I'm being sent on a neon sign making course as an Xmas present this spring. Cool!!! If you're like me you'll absolutely fall in love with hot glass. I've got several Z568Ms that are out-gassed... ...just wondering :) Yep, if a pin seal

Re: [neonixie-l] OT: ShellShock bash shell vulnerability...

On 09/26/2014 05:57 AM, Nick wrote: Genuine 10/10 nastiness for web-servers that use Bash CGI - you have all probably heard about this one - its potentially far far worse than the OpenSSL HeartBleed one... This is what I sent to all our staff yesterday: Note that the fix that was

Re: [neonixie-l] Re: Careful what you use to power your nixies...

On 09/01/2014 08:58 AM, Nick wrote: This is a paper from Buckinghamshire Trading Standards on the risks of cheap adapters, even if they have what purports to be a CE mark. We looked into agency approval for our induction heaters (fluxeon.com). What we found was startling. Unlike here in

[neonixie-l] Re: Sperry radar clock now working!

That has to be the coolest scope clock I've seen in a long time. Well done! The 400hz whine would send me through the roof, though. John On 07/14/2014 09:29 AM, neonj...@gmail.com wrote: I've got the clock displaying time now. The video shows it upside down on the bench so it's at a few

Re: [neonixie-l] Neon size limitations?

. Tube Collectors Association, another Yahoo group, that once the 'cathode' of the gun is exposed to 'air' it is DESTROYED, and can NOT be used again.Ira. On 4/28/2014 4:18 PM, NeonJohn wrote: On 04/28/2014 04:47 PM, Matthew Smith wrote: Quoth Tidak Ada at 2014-04-29 06:13 ... I once

Re: [neonixie-l] Neon size limitations?

On 04/28/2014 08:05 AM, B Otto wrote: Reading the thread on fake gigantic nixies got me thinking about the possibilities or REAL gigantic neon applications. Is there a practical limit on how large a neon indicator could be? Using traditional methods, would it be possible to make a neon glow

Re: [neonixie-l] Neon size limitations?

On 04/28/2014 04:47 PM, Matthew Smith wrote: Quoth Tidak Ada at 2014-04-29 06:13 ... I once opened a 50 cm B/W picture tube to make a lamp of it. I carefully packed the tube in thick blankets and then filed off the exhaust nipple. About one minute of hissing and the pressure was

Re: [neonixie-l] Strobotron

Nifty. I have two of the general radio Strobotachs that used the neon tubes. I'm reversing direction on one. I'm putting solid state internals in it with a microprocessor to read the big pot and set the speed. That will get rid of the drift that plagues this model. Best part is, I can fit the

Re: [neonixie-l] Help with upgrading my soldering iron

On 02/16/2014 01:12 PM, blkadder wrote: Greetings All, I am hoping you can help me make a decision. I have been using my Radio Shack 25w soldering iron for a few years now, and it is time to upgrade. I have been scouring boards and other Interwebz sites, and I think I have narrowed

Re: [neonixie-l] Re: Interesting document on Krypton-doped nixies,,,

Those UV LEDs generate a LOT of UV. I use one as a color tester for my neon shop (most colors of neon tubing look white when off). Glad you didn't hurt your eyes. Problem is, the glass is opaque to UV. If you don't mind spending the money you can reactivate the tubes. One can buy a microcurie

Re: [neonixie-l] Re: Interesting document on Krypton-doped nixies,,,

On 02/10/2014 09:30 AM, Kent Stevens wrote: Could Americium-241 be used from an old smoke detector since it emits both Alpha and low level Gamma? I haven't tried it but I would expect it to work fine. The alpha particles should slam into the glass and generate enough Bremsstrahlung X-rays

Re: [neonixie-l] Re: Interesting document on Krypton-doped nixies,,,

On 02/10/2014 09:32 AM, Tidak Ada wrote: But Ra228 will be more efficient in this case, for it is a ß-radiator. However, it only has an half life of 69 months. Actually no. Ra-226 in equilibrium with its decay chain is an everything emitter. It was widely used in tubes such as radar T/R

Re: [neonixie-l] Re: Interesting document on Krypton-doped nixies,,,

On 02/10/2014 10:15 PM, GastonP wrote: Did any of you try with good old Thorium? I have been playing with some gas lamp mantles, the retail item that contains more Thorium, and they emit a very happy dose of alpha and beta particles. Way more than what you get from uranium marbles. Might

Re: [neonixie-l] Re: 2 Hickok Ford Vehicle Simulator Analog computers

We had an analog computer at the Sequoyah Nuclear plant that simulated reactor core dynamics. It had several banks of Nixie tube readouts, several strip chart recorders, probably 75 precision 10-turn pots with vernier dials and a big patch board. The patch board allowed different sections to be

Re: [neonixie-l] 2 Hickok Ford Vehicle Simulator Analog computers

On 02/03/2014 02:17 PM, Matthew Smith wrote: John - any idea of what the Nixies in the Sequoyah were for? Voltmeters? Yes, voltmeters. They could be jumpered into any part of the simulation circuitry. As I understand it, they were used primarily to set up the initial parameters more

Re: [neonixie-l] Re: Putting a film on tubes...

On 01/17/2014 04:41 AM, astroschmidt wrote: Hi Nick, that could have been me. In Germany the glass-paint that I use to colour my nixies and VFD-tubes is Here in the US there are two very easy methods that I use to color neon tubes. The first is Krylon stained glass in a can. Available

Re: [neonixie-l] Exporting Nixie watches to Russia

David, Contact my partner in Fluxeon, Garett Churchill, g...@fluxeon.com. Among other things he handles shipping. We've sold quite a few of our $700+ induction heaters into Russia so he knows how to do it. I only do engineering so I don't know the details but I think he uses DHL. Just write

Re: [neonixie-l] Re: What to do with a 0B3 regulator tube ?

On 01/10/2014 08:01 PM, John Smith wrote: This is getting interesting...never have seen a pure green ionized gas. There is a possibility it may have been a hybrid gas mixture. Since Helium produces a pale yellow and mercury will produce a blue color...possibly it was a mixture of a few

Re: [neonixie-l] Gottlieb VFDs

On 01/07/2014 05:25 PM, Quixotic Nixotic wrote: I was given three of these Gottlieb VFDs recently. They are quite cute chunky 1 inch / 25.4mm digits, but what can I do with twin 3 digits? I guess there is a 1,000s dot on there too, so a counter of some kind is obvious. On board UDN6118As.

[neonixie-l] Tube making supplies

Hey guys, This came across the Neon-l list. http://electrontubestore.com/ They sell components for people who make their own tubes. I've made some specialty tubes such as X-ray tubes and BF3 neutron detection tubes but I had no idea there were enough others to support a business. Anyway, this

Re: [neonixie-l] Tube making supplies

On 01/04/2014 10:01 AM, chuck richards wrote: Thanks for posting that John! I have checked their site a few times before, and it looks like they've now added many more items. You're welcome. By the way, have you put any more of the 4-wheeled boom boxes out of commission lately? Always

Re: [neonixie-l] Quick hello

On 11/26/2013 06:06 PM, Matt Wetherill wrote: I thought I might try something driven by an Arduino - it'll be quite a learning curve but should keep me busy ;) Hi Matt, Welcome back. Mine may not be a real popular opinion but I do NOT like the Arduino. It's mangled sorta-C++ is a pain,

Re: [neonixie-l] Quick hello

a cheap Dallas RTC on the protoboard clocks I have built as xmas gifts. On Tue, Nov 26, 2013 at 7:14 PM, NeonJohn j...@neon-john.com wrote: On 11/26/2013 06:06 PM, Matt Wetherill wrote: I thought I might try something driven by an Arduino - it'll be quite a learning curve but should keep me

[neonixie-l] Atmel clock/timer projects

I'm working on a simple count-down timer that will time from 0.1 to 999 seconds with 0.1 second resolution. I'm using an Atmel ATmega8515, probably not the best chip but I have a ton of 'em from another project. My problem is, it's not behaving anything like I expect. Up to about 10 seconds,

Re: [neonixie-l] Atmel clock/timer projects

On 11/04/2013 07:00 PM, Frank Bemelman wrote: Assume you have an interrupt every 57 uS. [untested code] int timervalue = 0; int msektimer = 0; . . . timer_int() { timervalue += 57; // add the uS that have passed since previous interrupt if(timervalue1000) // a millisecond +

Re: [neonixie-l] Another progress in making nixies

Yes indeed, a very nice job. I'm impressed John On 09/09/2013 11:26 PM, Michel wrote: Wow, that is amazing! I actually like the envelope shape :-). Maybe it's a bit too big for a 6 digit clock, but it would look brilliant for a single tube nixie clock! Well done! -- John DeArmond

Re: [neonixie-l] Re: Something for the tube/nixie making people?

I blow glass and make neon as hobbies and am the chief engineer at Fluxeon which makes induction heaters, useful for heating the internals of a vacuum tube to outgas them so maybe I can throw in here a bit. The first thing you'd need to do is pay to have a very thorough engineering analysis made

Re: [neonixie-l] Re: Something for the tube/nixie making people?

On 08/28/2013 01:03 PM, Dalibor Farný wrote: I hope the attachment is not too big.. 400kb.. Nice. Gee, uh, I thought it was against the law or something to have a shop that clean and neat. I'm afraid to post photos of my shops, lest people confuse them with fractals or something :-) John

Re: [neonixie-l] Re: Bruce Nauman exhibition in London

On 02/05/2013 06:15 PM, Terry S wrote: Sorry, I don't click on any link with mindfuck in it. You didn't miss anything. It takes no talent to be vulgar. John -- John DeArmond Tellico Plains, Occupied TN http://www.fluxeon.com -- THE source for induction heaters

Re: [neonixie-l] Etching anodes and cathodes

On 01/30/2013 11:46 AM, John Rehwinkel wrote: Superior Technical Ceramics has ceramic washers as stock parts. Their 2-56 washer was $1.40 apiece and their 0-80 washer was $1.35 apiece with a 4-week lead time when buying a couple thousand washers at a time. They also offer ceramic nuts

Re: [neonixie-l] Re: dekatron geiger counter on E-bay England

Gad, I feel old. I've USED that model of survey meter. There is a variant that was made by Nuclear Chicago that used dekatrons for the last two digits and then vertical neon counter modules for the rest. This is the type with 10 neon lamps behind numbered film. We had one at the first nuclear

Re: [neonixie-l] Re: GeekKlok and FLW up for grabs

On 12/02/2012 10:17 PM, Zane Faught wrote: nothing important PLEASE! Can we stop this crap? Rehashing this issue yet again will accomplish absolutely nothing other than making this an unpleasant list to be on. Try shutting up for a change, y'all! John -- John DeArmond Tellico Plains,

Re: [neonixie-l] Re: Connector from glass to vacuum system

On 11/01/2012 11:17 AM, jb-electronics wrote: Hi again, I made some tests with my vacuum system today: I opened the ball valve and let the pump run for two hours straight. After about ten minutes, the pressure arrived at 9E-3mbar and stayed there for the rest of the time. Jens, When I

Re: [neonixie-l] Re: Nixies in EETimes

On 09/18/2012 05:28 AM, Dekatron42 wrote: Definately over-engineered, it says created by John Day and Sean Cappy of Microchip so it is no wonder they use a lot of Microchip IC's.. That's kinda old-think, wouldn't you say? While the multicolor fading LEDs are a bit tacky, the throwing of

Re: [neonixie-l] Re: Really Amazing Flip Dot Display

On 07/19/2012 09:14 PM, coggs wrote: So beautiful. I will admit to collecting a few flip-dots. Driving strategies are not dissimilar to nixes. Hard to come by. Must watch municipal auctions when they retire bus fleets. Either the buses go intact to 3rd world countries or many going into

[neonixie-l] Abridged summary of neonixie-l@googlegroups.com

On 06/17/2012 09:55 AM, ron wrote: Hello neon john! Up to your mouthing off again like you are the god of glass blowing! Well, you might be! You are great! Indeed, in watching your videos, I have never seen anyone else with your excellent talent! Ron, I meant you no malice so I'm sorry

Re: [neonixie-l] Soda lime - small success

On 06/17/2012 06:07 AM, jb-electronics wrote: Thanks :-) I have some zinc-carbon batteries here (AAA size, quite small) that I will cut open to extract some nice carbon rods that I can use for forming the glass. I will use one of these rods for the purpose you described: Flaring the small

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