Re: [neonixie-l] Displaying unused tubes

On 2020-03-01 6:44 PM, alb.001 alb.001 wrote: > beware of some foam materials which are acidic and corrosive.  I kept a > few DIP devices from the 1970's and early 1980's which were stored in > the conductive black foam used with static sensitive devices.  All the > pins which were in this foam

Re: [neonixie-l] Raytheon Monoscope - badly corroded pins

brochure: http://www.frank.mif.pg.gda.pl/other/Raytheon/Raytheon_symbolray_an.pdf And @TubeTimeUS got one working: http://tubetime.us/index.php/2018/06/04/a-vacuum-tube-rom/ --Toby > Dave > > On 2/13/2020 11:45 PM, Toby Thain wrote: >> Hi, >> >> Recently bought a couple of Monoscope

[neonixie-l] Raytheon Monoscope - badly corroded pins

Hi, Recently bought a couple of Monoscope CK1414F10C tubes in varying condition. One has quite corroded base pins, anode cap, and target pin, apparently due to acid disintegration of the original packing foam. Pics: https://imgur.com/a/ofE78Zs I believe the pins are likely nickel. Is there a

Re: [neonixie-l] Raytheon Monoscope - badly corroded pins

ough to remember seeing this Indian head test pattern being >> broadcast late at night. ...  Ira. >> >> >> On 2/14/2020 3:54 PM, Mac Doktor wrote: >>>> On Feb 14, 2020, at 2:11 PM, Toby Thain >>>> wrote: >>>> >>>> Thanks very much

[neonixie-l] For interest: Pics from damaged HP crt

Hi, For interest of the group I posted some pics of the electron gun assembly of an HP storage CRT at: https://www.flickr.com/photos/qu1j0t3/albums/72157713120241207 The CRT itself was broken in shipping so I removed it from the monitor and took the opportunity to get these shots. If anyone

[neonixie-l] Ferrofluid hack - Uni of Oslo

Not nixies, but cool regardless: https://www.youtube.com/watch?v=5PFgVtzsXHM=emb_logo --Toby -- 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

Re: [neonixie-l] P12 Phosphor CRT

On 2020-02-10 10:34 AM, Nicholas Stock wrote: > Hi Folks. It’s a 5CP12 tubehas engineering sample sticker, so not > sure how common a phosphor this was... > > Here’s a picture of the other colours.. > > > > The P11 is quite a shocking purple! > Nice pics. Just curious what circuitry

Re: [neonixie-l] P12 Phosphor CRT

e > > On 10/02/2020 15:53, Toby Thain wrote: >> On 2020-02-10 10:34 AM, Nicholas Stock wrote: >>> Hi Folks. It’s a 5CP12 tubehas engineering sample sticker, so not >>> sure how common a phosphor this was... >>> >>> Here’s a picture of the oth

Re: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

On 2020-05-14 11:35 AM, newxito wrote: > There is a schematic of a high voltage supply (350V, 1.2mA) in the > LT1308 datasheet, so maybe you can modify the circuit (FB voltage The problem with a lot of datasheet designs is that the transformers are long unobtainable. (Also I don't see that

Monoscopes - was Re: [neonixie-l] NIMO

On 2020-10-03 10:00 a.m., Robert G. Schaffrath wrote: > "Those nimo look like tiny CRTs!  If anyone can make them it’s Dalibor!" > > Talk about a niche market. Not only are they infinitely more complex to > construct than a Nixie tube, the market for them would be even smaller > than for his

Re: [neonixie-l] Re: Mercury not all it’s cracked up to be?

On 2020-07-17 10:00 p.m., Paul Andrews wrote: > My point really is, is there a way to determine the composition of the > gases inside a Nixie tube? It would be interesting to know, as this is > something that is lacking in datasheets. Get a sufficiently precise spectrogram? --Toby > > I’ll

Re: [neonixie-l] IN-4 ghosting, once again.

On 2021-01-08 10:27 a.m., gregebert wrote: > Another thingIf you see random oddities, it's possible the CPU is > doing housekeeping tasks. I dont know about Arduino, but definitely on a > Raspberry Pi the Linux OS will periodically do mandatory OS functions > and it will definitely affect

Re: [neonixie-l] Cleaning old circuit boards and components without destroying them - what to use?

On 2021-01-15 7:07 p.m., Charles MacDonald wrote: > On 2021-01-15 6:58 p.m., Adrian Pardini wrote: >> On Fri, 15 Jan 2021 at 20:56, Dekatron42 >> wrote: >>> >>> Photos doesn't work in Neonixie-L for me and some other memebers so >>> unfortunately I can't include any just yet (time to move from

Re: [neonixie-l] Re: OPT OUT !!! Amazon devices to automatically share your Internet with neighbors

On 2021-05-30 11:07 a.m., David Pye wrote: > Personally, I'm cool with it. > I, FOR ONE, WELCOME OUR AMAZONIAN OVERLORDS > There are all sorts of alarmist articles out and about, but if you look > at what it *actually does*, and how much bandwidth it can potentially > share, and what can use

Re: [neonixie-l] OPT OUT !!! Amazon devices to automatically share your Internet with neighbors

On 2021-06-01 2:12 p.m., gregebert wrote: > As far as I know, in order to give bandwidth on your local network to a > neighbor's device,  it would require your neighbor's device to obtain > access credentials to your network. Despite promises of security, etc, I Doesn't it _only_ require your

Re: [neonixie-l] Re: nixie clock using trigger tubes

On 2021-05-02 5:07 p.m., Tidak Ada wrote: > Did you already try UV-LED’s? Banggood and Ali sell COB-chips up to > 365nm wavelength 10 to 50W power and also a 365nm cut-of filter. That > gives you the advantage of no visible light for small money, However, > you don’t need the full power of a 10W

Re: [neonixie-l] Magnetic deflection yoke winding

On 2021-02-04 5:51 p.m., 'John Rehwinkel' via neonixie-l wrote: > >> 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,

Re: [neonixie-l] Magnetic deflection yoke winding

On 2021-02-04 4:49 p.m., gregebert wrote: > I've dissected quite a few TV's in past years, and the deflection yoke > has a rather complex winding pattern, where the windings are closer > together at the neck, and spread outward around the funnel-area of the > tube. If I recall, there are 4 coils

Re: [neonixie-l] Magnetic deflection yoke winding

--Toby > Regards > > On Thu, 4 Feb 2021 at 16:58, Toby Thain wrote: >> >> Hi list, >> >> 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 d

Re: [neonixie-l] Magnetic deflection yoke winding

On 2021-02-04 10:40 p.m., 'John Rehwinkel' via neonixie-l wrote: 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

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

On 2021-04-01 8:52 a.m., chuckrr wrote: > What is standard procedure for tying off unused op-amp inputs? > > If for instance there is a circuit which uses only (2) of the (4) available > op-amps in a DIP package, > what is the normal protocol for dealing with these unused units? > > Can the

Re: Small diameter Anode plugs - Re: [neonixie-l] Re: Russian crt - foiled by plastic sleeve

On 2021-03-07 11:33 a.m., Toby Thain wrote: > On 2021-02-18 9:07 a.m., Toby Thain wrote: >> On 2021-02-16 4:57 p.m., Toby Thain wrote: >>> On 2021-02-16 3:32 p.m., Dekatron42 wrote: >>>> I've had similar problems with two Russian CRT's and I had to use

Re: [neonixie-l] Re: NIXIE TUBE SOCKETS

On 2021-03-03 7:33 a.m., Paul Andrews wrote: > > I use some milk-max sockets. Contrary to what others have said, I find > that the tube leads are stiff enough to be pushed in to these when cut > short. You still have to make your own PCB though. Here is an example >

Re: [neonixie-l] Re: NIXIE TUBE SOCKETS

On 2021-03-03 10:02 a.m., Toby Thain wrote: > ... > spacing allows (there are 7 pins in a 6.8mm radius). I mean DIAMETER... > > --Toby > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group

Re: [neonixie-l] Re: NIXIE TUBE SOCKETS

insertion force. --Toby > > On Wednesday, March 3, 2021 at 7:29:22 AM UTC-8 Toby Thain wrote: > > On 2021-03-03 10:02 a.m., Toby Thain wrote: > > ... > > spacing allows (there are 7 pins in a 6.8mm radius). > > I mean DIAMETER... > > > >

Small diameter Anode plugs - Re: [neonixie-l] Re: Russian crt - foiled by plastic sleeve

On 2021-02-18 9:07 a.m., Toby Thain wrote: > On 2021-02-16 4:57 p.m., Toby Thain wrote: >> On 2021-02-16 3:32 p.m., Dekatron42 wrote: >>> I've had similar problems with two Russian CRT's and I had to use >>> scalpel to cut them loose and then carefully peel t

Re: [neonixie-l] Re: SZ-3 Nixie - Chemical Symbols!

On 2021-04-14 11:47 p.m., gregebert wrote: > I'm guessing this nixie tube was used in equipment for monitoring > impurities in a steel plant. > (Those are all electronics symbols) > On Wednesday, April 14, 2021 at 6:46:55 PM UTC-7 严泽远 wrote: > > This one marked QS30-75, but I think it's

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

On 2021-04-14 10:02 a.m., Adrian Godwin wrote: > No, they often have a Z modulation input and many have a TV sync, so > you'd only need to add a vertical scan. But tube depth is a problem. > Green isn't, though ! > > On Wed, Apr 14, 2021 at 2:44 PM jb-electronics >

[neonixie-l] Russian crt - foiled by plastic sleeve

Hi all I have a crt with what looks to be a protective plastic sleeve over the socket and gun end (pictured: https://imgur.com/9exmkCq). It isn't coming off with gentle pressure, are there any tricks other than careful destructive removal? Thanks --Toby -- You received this message because

Re: [neonixie-l] Re: Russian crt - foiled by plastic sleeve

have yokes for mine): https://imgur.com/AGzrEDH --Toby > /Martin > > On Tuesday, 16 February 2021 at 20:18:18 UTC+1 Toby Thain wrote: > > Hi all > > I have a crt with what looks to be a protective plastic sleeve over > the socket and gun end (pictured: https:

Re: [neonixie-l] Re: Russian crt - foiled by plastic sleeve

hat was > hotter than from the water tap at home and that was not enough. > > /Martin > > On Tuesday, 16 February 2021 at 20:18:18 UTC+1 Toby Thain wrote: > > Hi all > > I have a crt with what looks to be a protective plastic sleeve over > the sock

Re: [neonixie-l] Re: Russian crt - foiled by plastic sleeve

On 2021-02-17 2:44 p.m., Toby Thain wrote: > On 2021-02-16 3:32 p.m., Dekatron42 wrote: >> I've had similar problems with two Russian CRT's and I had to use > > Most importantly, did you get the CRT working? If so, I could probably > learn from your project! Further to that

Re: [neonixie-l] Re: Russian crt - foiled by plastic sleeve

On 2021-02-16 4:57 p.m., Toby Thain wrote: > On 2021-02-16 3:32 p.m., Dekatron42 wrote: >> I've had similar problems with two Russian CRT's and I had to use >> scalpel to cut them loose and then carefully peel them off as they had Hi, Update on this, was able to remove the cap

[neonixie-l] Magnetic deflection yoke winding

Hi list, 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? I own a handful of

Re: [neonixie-l] VFD filament drive

On 2021-08-20 12:58 p.m., Paul Andrews wrote: > 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. ... > FWIW I've used LM2575 1A adjustable step down for DC filament voltages in that range. --Toby > ... > >

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

On 2021-09-16 9:29 a.m., 'John Rehwinkel' via neonixie-l wrote: >> 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.

Re: [neonixie-l] Scope Clock SC200C

On 2021-10-18 7:53 p.m., Gary Kaufman wrote: I've been unsuccessful in reaching David Forbes, so thought I would ask the group for help. My SC200C has been "unhealthy" for a while now, and I'm trying to get it running properly. I've now got a stable, but scrambled display (see pic's).  I

[neonixie-l] Vacuum tube manufacturing equipment - Providence RI

This all seems very worthy of preservation: https://boston.craigslist.org/gbs/msg/d/providence-rca-vacuum-tube/7389317693.html "RCA and Sylvania Vacuum Tube Manufacturing Equipment for sale - RCA Grids Winders, Sealex Machines, Complete Trolley Assemblies with control panel, Mica Dies,

Re: [neonixie-l] OT: Not a Nixie but a very nice and rare tube, a Selectron memory tube!

On 2021-12-30 3:46 p.m., Nicholas Stock wrote: I want what that seller is smoking. ~$10K? How much did the last one you saw sell for -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails

Re: [neonixie-l] Where to get PCBs from, some companies blocked by PayPal and credit card issuers......

On 2021-12-24 9:52 a.m., martin martin wrote: Here's where I go: http://mpi-pcb.com/contact-mpi.php Local USA and very good! Surprised nobody has mentioned OSHpark yet (on google results they are buried under four ads for other companies...)

Re: [neonixie-l] Scope Clock SC200C

On 2021-10-30 12:28 p.m., GEK wrote: Success!!! I really appreciate all of the help from Tristan and others. Nice to have my clock back. Turns out the trace from blanking from pin 9 of the 74HC74 takes a very long route around the edge of the board in reaching pin 2 of U17 (6N137).  There

Re: [neonixie-l] Re: Ecaterina Nixie clock project

On 2021-11-02 4:00 p.m., 'Bogdan Paduraru' via neonixie-l wrote: Hello friends I've managed to spell Ecaterina with nixies I have  used 5 X B5018  (A, B , C, D, E , F , G, H , j , K) 3XB5035  (L , M , N, P, R, S, T,V, W, X) 1X numeric 6844 for I (1 and possible 0 /o) Labelling those types

Re: [neonixie-l] Re: Ecaterina Nixie clock project

On 2021-11-03 4:02 p.m., 'Bogdan Paduraru' via neonixie-l wrote: Dear Toby, many thanks for your suggestion => currently I don't have access to any Linux or OS X system but I will try using a virtual machine . I hope I will get lucky with some 50317 To save you that trouble I've put the

Re: [neonixie-l] Ecaterina Nixie clock project

frore frosh froth glime glink glisk glome glore glove gnome grime grind gripe grith grope grove gwine klosh knowe krina krome krona krone krosa On Thursday, November 4, 2021 at 12:46:52 AM UTC+2 Terry Bowman wrote: On Nov 3, 2021, at 4:25 PM, Toby Thain wrote: To save you

Re: [neonixie-l] New find!

On 2022-03-07 8:23 a.m., 'John Rehwinkel' via neonixie-l wrote: What's even more interesting is that a lot of these old dinosaurs still work. A friend at work gave me a US Navy scope (USM-117) from the early 1960's, and at first it was having some problems generating high-enough anode voltage

XY(Z) graphics - Re: [neonixie-l] New find!

On 2022-03-19 7:27 p.m., 'John Rehwinkel' via neonixie-l wrote: 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

Re: [neonixie-l] eBay Paranoia

On 2022-03-31 4:01 p.m., Jim KO5V wrote: Good Afternoon, For the last couple of years, I have avoided giving eBay my bank info and SS #.  I always use PayPal on line, mainly because in my simple mind, keeping my information in one place, rather than spreading it out all over the web lowers

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

On 2022-04-24 10:11 a.m., martin martin wrote: Greetings all. I was given this RCA possible trainer scope.  Date unknown. * Restore to its full glory? * Sell on the Bay * Turn into a scope clock? Vote: Restore I have no idea if it's electrostatic or magnetic deflection and I have

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

On 2022-04-25 5:41 p.m., 'John Rehwinkel' via neonixie-l wrote: 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.

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

On 2022-04-24 7:45 p.m., Mac Doktor wrote: On Apr 24, 2022, at 6:10 PM, 'John Rehwinkel' via neonixie-l mailto:neonixie-l@googlegroups.com>> wrote: I'd *really* like to know what frequency ratios of oscillators B and C create static or cycling patterns (A & D produce a lissajous figure

Re: [neonixie-l] What kind of display is this?

On 2022-05-12 1:33 p.m., liam bartosiewicz wrote: Am I correct in saying that you cannot directly view the characters off the monoscope? It would be cool to be able to display a bunch of characters on a small crt like a NIMO tube. Correct, you cannot. You need to drive the Monoscope like a

CK1414 Monoscope - was Re: [neonixie-l] What kind of display is this?

On 2022-05-12 11:41 a.m., Adrian Godwin wrote: So it's a thermionic character-generator ROM ? TubeTimeUS, who for all I know is on this list, has blogged in detail about these: http://tubetime.us/index.php/2018/06/04/a-vacuum-tube-rom/

Re: [neonixie-l] Re: B7971 tubes for sale - $150 each

On 2022-05-06 8:39 p.m., Charles MacDonald wrote: On 2022-05-06 08:20, Robert G. Schaffrath wrote: Poly Paks, Meshna, et al. By 1979 used tubes were $4/each and NOS were $5/each at Meshna. I bought a few NOS that I still have but looking back, yes I wish I had bought more. But, honestly, what