[neonixie-l] ZM1550 / ZM1551 Valvo panaplex
Folks , Any one of you have photos with above mentioned panaplex displays, in action ? I don't find any photo with these lit . thank you -- 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. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/e9f4b66d-0932-4334-bba2-7c204689a39en%40googlegroups.com.
[neonixie-l] Re: Soviet DMM Front Panel Labelling
Hi Terry,
Rotary switch is set to "R" (Roman alphabet) means Resistance measument.
Letter pi ("П") indicates "Перегрузка", which means overload or
overflow...
All the best, Konstantin
On Saturday, August 13, 2022 at 10:34:05 PM UTC+3 Terry Bowman wrote:
> Another ex-Soviet Nixie DMM:
>
> https://www.ebay.com/itm/125460995198
>
>
> Take a look at the last picture. The prefix is a capitol letter pi ("П")
> and the rotary switch is set to "R" (Roman alphabet) with a downward
> pointing arrow next to. What do these things indicate?
>
> I've been wondering what the capitol pi was used for since the first time
> I saw an IN-19V. Anyone?
>
>
> I'm seriously tempted but the shipping for the 4kg package is a bit steep.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com
>
> "Would you like to see the relevant data?"—343 Guilty Spark, *Halo 2*
>
>
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Re: [neonixie-l] FS: 5 NOS 5870
Burroughs did at least own one factory in Japan according to this link: https://www.computerwoche.de/a/burroughs-will-in-japan-produzieren,1200932 however it doesn't say if it produced Nixies. Google translate for the link: -- TOKYO - Burroughs Corp.'s Japanese sales company, Takachiho Burroughs Co, has acquired Takachiho Koeki Co's Gotemba plant, which manufactures minicomputers, POS terminals and DV accessories. The distribution of the devices had previously largely gone through Takachiho Burroughs. At the end of 1975, Burroughs had increased its stake in the Japanese sales company from 50 to 95 percent - since then its partner Takachiho Koeki Co has only held 5 percent of the shares. The Japanese Ministry of Trade and Industry (MITI) has approved the sale of the plant and Burroughs production plans. -- The same information about a Burroughs factory in Japan can be found here: http://www.burroughsinfo.com/manufacturing-locations.html /Martin On Monday, 22 August 2022 at 15:46:17 UTC+2 Paul Andrews wrote: > I doubt that Burroughs had a factory in Japan. I suspect that they were > made in Japan for Burroughs. I also suspect that the same tubes were made > for other companies and badged for them. > > On Sunday, August 21, 2022 at 12:32:58 AM UTC-4 nixiebunny wrote: > >> Yes, JRC is Japan Radio. But did they have a Nixie tube factory, or did >> they print their name on tubes made by another company? These tubes were >> made using rather sophisticated methods, and the tooling would be rather >> unique. >> Did JRC make Nixie tubes? Did Burroughs make Nixie tubes in Japan? >> (I just popped the back off a c.1960 five tube radio made by Monarch in >> Japan, and it is full of Matsushita tubes.) >> It's an interesting question. >> >> >> >> >> >> On Sat, Aug 20, 2022, 5:15 PM Charles MacDonald >> wrote: >> >>> On 2022-08-20 14:25, David Forbes wrote: >>> > Max, >>> > Thanks for the photo. These JRC tubes look very similar to Japanese >>> > Burroughs B-5870 tubes. It's likely they were made in the same >>> factory, >>> > but I don't know whose factory it was. >>> >>> JRC? (Japan Radio Company) >>> >>> -- >>> Charles MacDonald VA3CPY >>> >> -- 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. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5cd9d531-cb8a-42a2-bf0a-d320e615dcc3n%40googlegroups.com.
Re: [neonixie-l] FS: 5 NOS 5870
I doubt that Burroughs had a factory in Japan. I suspect that they were made in Japan for Burroughs. I also suspect that the same tubes were made for other companies and badged for them. On Sunday, August 21, 2022 at 12:32:58 AM UTC-4 nixiebunny wrote: > Yes, JRC is Japan Radio. But did they have a Nixie tube factory, or did > they print their name on tubes made by another company? These tubes were > made using rather sophisticated methods, and the tooling would be rather > unique. > Did JRC make Nixie tubes? Did Burroughs make Nixie tubes in Japan? > (I just popped the back off a c.1960 five tube radio made by Monarch in > Japan, and it is full of Matsushita tubes.) > It's an interesting question. > > > > > > On Sat, Aug 20, 2022, 5:15 PM Charles MacDonald > wrote: > >> On 2022-08-20 14:25, David Forbes wrote: >> > Max, >> > Thanks for the photo. These JRC tubes look very similar to Japanese >> > Burroughs B-5870 tubes. It's likely they were made in the same factory, >> > but I don't know whose factory it was. >> >> JRC? (Japan Radio Company) >> >> -- >> Charles MacDonald VA3CPY >> > -- 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. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/c7443a90-459d-4ae4-be2b-b8a3672db678n%40googlegroups.com.
Re: [neonixie-l] Self-introduction & tube trading
Good morning, I have nothing of any note to trade but would be interested in purchasing some of your large VFD's/ I am in the UK, please let me know if you would be happy to ship there and if so, what you would like to sell some for? - RIchard On Sunday, 21 August 2022 at 22:56:34 UTC+1 dunc...@gmail.com wrote: > Martin: I'd never heard of pandicon tubes before! That's so cool! Driving > them seems like a real pain, though, what with all the mandatory > multiplexing going on. Probably less of a pain if you're willing to use a > microcontroller? I would love to see some of your work, if you have a > link. > > One of Dance's chapters is about beam switching/trochotron counting > circuits, so I'm already stealing wholesale from that to build a clock. > > Eric: when I was investigating options for my tuning fork timebase, I came > across a plethora of vacuum tube quartz crystals in the low-hundreds to > tens of kilohertz range. Of course, they're pretty old and probably have > poor temperature compensation, but it would solve your frequency problem > without "cheating". I've also seen some people using astable > multivibrators as frequency dividers, but by all accounts they're fiddly > beasts. > > --Duncan > > On Sun, 21 Aug 2022, Tidak Ada wrote: > > > Hi Duncan, > > > > I have some Elesta EZ10 A/B tubes (1MHz resp. 500kHz) that could do the > > job if I can get the MHz of the 4MHz TCXO at 400kHz in a 'fair' way. > > There must be a way using heterodyne mixing, but that goes beyond my > > technical knowledge. HP used the technology in some counters in their > > early years. > > The trouble is that the EZ10A is a hydrogen filled tube. Hydrogen > > diffuses through glass, so there is a good chance that the tube is dead. > > > > Another less fair way is to use (High levl)TTL or CMOS chips there. > > After all, the TCXO is also a semiconductor oscillator. > > > > The lower frequencies have to be divided by some Sylvania 6879 dekatrons. > > The display part should exist by a GS12C, GS12D and GC12/4B and some > > 10-counters from the Ericsson house. > > > > I am at the level to set up a test circuit for the Elesta's, but time > and age are the bottlenecks. > > Anyhow, I like to save some of the Elesta's for my tube collection. > > Another guy who may be able to help you is Graham McGuire, also a > Neonixie-L member > > > > Cheers, > > eric > > > > > > > > > > > > -Oorspronkelijk bericht- Van: neoni...@googlegroups.com [mailto: > neoni...@googlegroups.com] Namens Duncan Townsend > > Verzonden: zondag 21 augustus 2022 17:17 > > Aan: neoni...@googlegroups.com > > Onderwerp: RE: [neonixie-l] Self-introduction & tube trading > > > > Thanks for the warm welcome! > > > > Michail: part of the challenge for the 1j24b CPU is to build the whole > thing without any silicon. Building the muxing and decoding circuitry for > the 5971s without using a PIC is part of the fun! Of course, sourcing > high-voltage germanium diodes is a slog. > > > > eric: I had read Joe's research radiomuseum.org but did not know that > we shared an _alma mater_. Thanks for the connection and the pointer to > tubecollectorsassociation! Re: quartz oscillators, how did you get the > frequency down into the dekatron range? IIRC, most dekatrons don't work > until you're down in the tens of kilohertz. > > > > --Duncan > > > > P.S. correction to my original email: I have a large quantity of ILC1 > 1/7 VFDs not ICL1 1/7. > > > > On Sun, 21 Aug 2022, Tidak Ada wrote: > > > >> Hello Duncan, > >> > >> Interesting projects. > >> > >> About those Russian rod-gridded tubes I will refer you to TCA-member [ > >> tubecollecto...@groups.io ] Joe Sousa (MIT). He did a lot of > >> research on these tubes. His reports are also published at > >> Radiomuseum.org [ > >> https://duckduckgo.com/?q=radiomuseum.org+english+language&hps=1&atb=v > >> 261-1&ia=web > >> ] > >> > >> I had plans for a clock with moving coil meter readouts, but I stopped > after calculating the power consumption of the project. > >> Intention was to start with a TC X-tal oscillator (400kHz) then count > down with dekatrons to the 0,1Hz region. Then a clock counter with a D/A > converter to the meters. > >> > >> Unfortunately, the power consumption is irresponsible, especially in > this time of scarcity and hi prices in Europe. > >> > >> Success! > >> eric (Tidak Ada) > >> > >> -Oorspronkelijk bericht- > >> Van: neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] > >> Namens Duncan Townsend > >> Verzonden: zondag 21 augustus 2022 3:53 > >> Aan: n, the eoni...@googlegroups.com > >> Onderwerp: [neonixie-l] Self-introduction & tube trading > >> > >> Hello everybody! > >> > >> I'm Duncan, an American software engineer by day and vacuum tube > enthusiast when I'm not distracted by other things. I have an unreasonable > number of pokers in the fire right now, but they include: > >> > >> * a clock based on each of J.B. Dance's Electronic Countin
