Now, if I could only remember where I stashed that time machine...
On Fri, May 6, 2022 at 7:20 AM Robert G. Schaffrath <
robert.schaffr...@gmail.com> 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
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
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 to do with all
of them back then? They were still
Strangely, I didn’t even get the notification. I would have bought them.
Actually, I didn’t know until I received the response from gregebert. Wonder
why several of the googlegroups emails didn’t even make it. ☹
Michail
From: neonixie-l@googlegroups.com On Behalf Of
gregebert
Sent:
Aren't we all :)
On Wed, May 4, 2022 at 4:01 PM gregebert wrote:
> I'm still kicking myself for not buying a bunch of these from PolyPaks
> back in the 1970's
>
> On Wednesday, May 4, 2022 at 1:35:25 PM UTC-7 Pramanicin wrote:
>
>> Tubes have sold.
>>
>> Thanks,
>>
>> Nick
>>
>> On Wed, May
Hi, Peter,
Unfortunately I do not think I would be able to adapt the ZM1350 to the
B5971 with a custom adapter board, and the reason is due to the differing
resistor requirements between the two for their respective pin sets - it
would require a not insignificant adjustment to the main board to
That's a good point. I never noticed that the center vertical segment was
one piece.
On Wednesday, April 28, 2021 at 11:42:03 PM UTC-4 Richard Scales wrote:
> The only problem in doing that - as far as I can tell - is that the B5971
> does not have the same number of segments, I believe that
, 2021 8:42 PM
To: neonixie-l
Subject: Re: [neonixie-l] Re: B7971 DUSTOFF Board Interest
The only problem in doing that - as far as I can tell - is that the B5971 does
not have the same number of segments, I believe that the centre vertical
segment is one long piece from top to bottom as opposed
The only problem in doing that - as far as I can tell - is that the B5971
does not have the same number of segments, I believe that the centre
vertical segment is one long piece from top to bottom as opposed to being
made up of two parts.
Whilst it may be possible to handle the switching of
I'm absolutely still interested in the DUSTOFF board. I'm also interested
in the ZM1350 board however I don't have any tubes and they seem very hard
to obtain. I do have a set of B5971 tubes. Is it possible to adapt the
ZM1350 board to B5971? I guess what I'm asking is if it's a one piece
Whew! Sorry again everyone. Been out of the country *again*, and will be
leaving to Australia in early June for a couple months. Work has been crazy
this year. That said... here are updates on all my existing and future
projects. .
*EXISTING PROJECTS*
*If your name is not listed below and you're
Mahdi,
I would be interested in a second DUSTOFF board for my daughter down the
street. I could send her simple greetings and updates.
Jon
On Wed, Apr 28, 2021 at 9:33 AM Peter Doroba wrote:
> Knock, knock. LOL
>
>
> On Monday, March 1, 2021 at 9:40:55 AM UTC-5 Peter Doroba wrote:
>
>> No
Knock, knock. LOL
On Monday, March 1, 2021 at 9:40:55 AM UTC-5 Peter Doroba wrote:
> No worries. Thanks!
>
> Pete
>
> On Thursday, February 25, 2021 at 1:36:06 AM UTC-5 Mahdi Al Husseini wrote:
>
>> Hi, Peter (and Bill and others),
>>
>> I owe you all some information, which I will get to this
No worries. Thanks!
Pete
On Thursday, February 25, 2021 at 1:36:06 AM UTC-5 Mahdi Al Husseini wrote:
> Hi, Peter (and Bill and others),
>
> I owe you all some information, which I will get to this weekend. I
> apologize - I have been out of country for work related reasons, and have
> been
Hi, Peter (and Bill and others),
I owe you all some information, which I will get to this weekend. I
apologize - I have been out of country for work related reasons, and have
been away from my workstation, for much of the past few months. Finally, I
have returned home. Be in touch soon.
Mahdi
Any updates?
On Monday, December 21, 2020 at 4:36:57 AM UTC-5 wayneco wrote:
> I’m down for two, more if it can be a generic data receiver and display, I
> have been wanting something like that, Burroughs nixie based for a long,
> long time.
>
> Sent from my iPad
>
> On Dec 17, 2020, at
I have used the B-7971 smart sockets to make clocks which are easy to build
and easy to program. I've used similar technology with other multi segment
displays and have developed a controller board to drive them to make a very
effective clock. No need for a dedicated board for the tubes (just six
I wish the B7971 kits that pop up from time to time were not so expensive.
I have enough of the very expensive parts (the tubes) but I missed out on
the boards years ago. I do not fire up my old MM5311 based clock much,
built in 1979/1980, as the multiplexing whine bothers me now. The six tubes
Despite it's "ugliness", the 7971 does support alphanumeric characters
whereas the 568m does not. That, along with their massive size, is why I
made a clock out of them a few years ago, thankfully when those tubes were
cheaper.
As far as beauty is concerned though, the 568m tubes are stellar.
Despite it's "ugliness", the 7971 does support alphanumeric characters
whereas the 568m does not. That, along with their massive size, is why I
made a clock out of them a few years ago, thankfully when those tubes were
cheaper.
As far as beauty is concerned though, the 568m tubes are stellar.
If I had to spend $150 on a single tube I'd choose the R|Z568M from Dalibor.
Way more aesthetically pleasing than these B7971 tubes in my opinion.
On Monday, January 25, 2021 at 6:10:49 PM UTC+1 Paul Andrews wrote:
> That is a very nice clock. If only I had that kind of disposable income. I
>
That is a very nice clock. If only I had that kind of disposable income. I
probably would have if I didn't fritter it away on smaller things.
On Sunday, April 5, 2020 at 1:37:20 PM UTC-4 Pramanicin wrote:
>
>
> Antenna MOD:)
>
> Sent from my iPhone
>
> On Apr 5, 2020, at 10:16, Michail
I hope somone here bought them at least?
Bill
On Fri, Jan 22, 2021, 7:51 AM Nicholas Stock wrote:
> Damn! Someone didn't do their research (or just wanted to be generous?).
>
> Anyone snag those here?
>
> Sent from my iPhone
>
> On Jan 22, 2021, at 02:40, fax_awd wrote:
>
> 50USD for 1 used
Damn! Someone didn't do their research (or just wanted to be generous?).
Anyone snag those here?
Sent from my iPhone
> On Jan 22, 2021, at 02:40, fax_awd wrote:
>
> 50USD for 1 used tested B7971, are we back to 2010?
> https://www.ebay.com/itm/233867007640
>
> M1在 2020年4月30日星期四下午2:58:10
50USD for 1 used tested B7971, are we back to 2010?
https://www.ebay.com/itm/233867007640
M1在 2020年4月30日星期四下午2:58:10 [UTC+8]寫道：
> Nothing wrong with that. Heh.
>
> But, damn, that’s even more expensive than me.
>
>
>
> He should put up pictures. People like to see pretty colors.
>
>
>
>
I’m down for two, more if it can be a generic data receiver and display, I have
been wanting something like that, Burroughs nixie based for a long, long time.
Sent from my iPad
> On Dec 17, 2020, at 08:24, Peter Doroba wrote:
> Any luck moving the remaining merch? :-)
>
> On Saturday,
Sounds good. For me only pcb and parts please.
peter@gmail.com schrieb am Freitag, 18. Dezember 2020 um 22:34:34 UTC+1:
> Glad to hear!
>
> Pete
>
> On Friday, December 18, 2020 at 12:00:39 PM UTC-5 Mahdi Al Husseini wrote:
>
>> Hi, Peter. Actually, yes! Happy to say there was sufficient
Glad to hear!
Pete
On Friday, December 18, 2020 at 12:00:39 PM UTC-5 Mahdi Al Husseini wrote:
> Hi, Peter. Actually, yes! Happy to say there was sufficient interest to
> justify another batch. I will send out the details in the next few days.
> Looking forward to having these manufactured!
>
Hi, Peter. Actually, yes! Happy to say there was sufficient interest to
justify another batch. I will send out the details in the next few days.
Looking forward to having these manufactured!
On Thu, Dec 17, 2020 at 11:24 AM Peter Doroba
wrote:
> Any luck moving the remaining merch? :-)
>
> On
Any luck moving the remaining merch? :-)
On Saturday, December 5, 2020 at 10:07:20 PM UTC-5 Peter Doroba wrote:
> Okay, count me in for a board. Good luck with the training! Seems we're
> into the same things just in different order. I'm working on learning
> microcontroller programming and
That could be a picture of what I received! I think I bought three lots
from that seller, and each lot had at least one broken tube - BUT, they
were really cheap!
On Monday, December 7, 2020 at 3:04:36 AM UTC-7 Nick wrote:
> Indeed - I mentioned that above.
>
>
Indeed - I mentioned that above.
https://nick.desmith.net/Nixies/DSCN1855.JPG
On Monday, 7 December 2020 at 03:19:13 UTC Nixcited delighted wrote:
> Wasn't this guy trading as USmintquarters or similar?
>
> John
>
>
>
>
> On 6 Dec 2020, at 20:08, Nick wrote:
>
> I certainly didn't buy all
Wasn't this guy trading as USmintquarters or similar?
John
On 6 Dec 2020, at 20:08, Nick wrote:
I certainly didn't buy all the 900 - I bought a few hundred, but so
did others on this group - he wanted USD 20/tube - you could negotiate
on bulk.
--
You received this message because you
Yup. Ordered 8. Got 10 but only 8 intact.
Wrapped in newspaper
> On 6 Dec 2020, at 20:08, Nick wrote:
>
> I certainly didn't buy all the 900 - I bought a few hundred, but so did
> others on this group - he wanted USD 20/tube - you could negotiate on bulk.
>
> Tubes were not Jim's business
I certainly didn't buy all the 900 - I bought a few hundred, but so did
others on this group - he wanted USD 20/tube - you could negotiate on bulk.
Tubes were not Jim's business - I think he acquired a warehouse for his
coin business and these were in there in crates, wrapped up in old
Okay, count me in for a board. Good luck with the training! Seems we're
into the same things just in different order. I'm working on learning
microcontroller programming and PCB design.
Pete
On Saturday, December 5, 2020 at 9:39:29 AM UTC-5 Mahdi Al Husseini wrote:
> Hi, Peter, very cool!
Yes. I like soldering all the parts. As well as smd parts ...
Mahdi Al Husseini schrieb am Samstag, 5. Dezember 2020 um 18:19:25 UTC+1:
> Yes that’s certainly possible but are you sure you would like that? There
> are more than 100 individual discrete transistors on the board, an equal
>
Yes that’s certainly possible but are you sure you would like that? There
are more than 100 individual discrete transistors on the board, an equal
number of individual pin sockets, and nearly double that number of SMD
resistors.
Perhaps you really like soldering!
On Sat, Dec 5, 2020 at 11:47 AM
Thank you. Would it be possible to get the pcb and all the parts , pcb not
assembled ?
Mahdi Al Husseini schrieb am Samstag, 5. Dezember 2020 um 17:37:10 UTC+1:
> Hi Wo, glad to hear you're interested. I am offering the fully assembled
> PCB (- the tubes).
>
> On Sat, Dec 5, 2020 at 11:24 AM
Hi Wo, glad to hear you're interested. I am offering the fully assembled
PCB (- the tubes).
On Sat, Dec 5, 2020 at 11:24 AM Wo Tu wrote:
> Hi !
> I am interested too. Whats the offer , an assembled pcb or only the pcb ?
> Greetings
>
> Mahdi Al Husseini schrieb am Samstag, 5. Dezember 2020 um
Hi !
I am interested too. Whats the offer , an assembled pcb or only the pcb ?
Greetings
Mahdi Al Husseini schrieb am Samstag, 5. Dezember 2020 um 15:39:29 UTC+1:
> Hi, Peter, very cool! I have my commercial and instrument ratings in
> rotary aircraft (and am working on my commercial multi
Hi, Peter, very cool! I have my commercial and instrument ratings in rotary
aircraft (and am working on my commercial multi engine FW). Possibly ATP
one day - we’ll see!
Yes, all of what you are requesting can be done seamlessly, though it
requires a wifi network that you can connect to, to be
Great! I'd likely take you up on the code help offer. I did start out as
an EE major in college but switched to Aeronautical Science when I got the
flying bug. :) I'm a Spirit Airlines Captain and live on an airport so the
the METAR/TAF feature really speaks to me. LOL Maybe a silly question
Yes of course! Currently, it will immediately select the closest airport
based on longitude and latitude data, but it is very easy to adjust the
code to select a particular airport ID. I can help with that as needed. The
current code for TAF/METAR is attached for reference. If purchased, I will
Robert you might be able to bounce the tube with some padding around it and
unshort the shorted segments. It's been done before. One trick is to tape
it to a broom handle so you can force the entire tube against something
like a stack of paper and get good force evenly distributed without
I got my first board from Poly Paks sometime in the late 1970’s. Probably
paid about $4 if I recall. One tube had shorted segments. I was about 15.
Then in 1979 I decided to build a clock and bought three boards from
Meshna Electronics. After I assembled that, I decided I would get spare
Yeah, that too. And register a whole lot of machine guns before May 1986,
and file mining claims, then patent claims to get the land transferred to
me before then too. And get someone to buy me a few B-17 and B-29s right
after the war. And a few 62 Corvettes, and a Ferrari 250 or two...
On
On 2020-12-03 4:45 p.m., gregebert wrote:
Did anyone in this forum get their 7971's from PolyPaks a long time ago
(1970s/1980s) ? I recall they were inexpensive, and many were sold in
pairs along with the socket/driver board after being scrapped from
Lectrascan units.
Good Old ETCO
that cracked due to the many moves over the years.
Jeff
From: neonixie-l@googlegroups.com On Behalf Of gregebert
Sent: Thursday, December 3, 2020 3:46 PM
To: neonixie-l
Subject: Re: [neonixie-l] Re: B7971
Did anyone in this forum get their 7971's from PolyPaks a long time ago
(1970s
I'll give you $25 each for some of those!
On Thu, Dec 3, 2020 at 4:06 PM Nick wrote:
> Mine all came from Jim Scutio at usmintquartets man years ago- several
> crates at under usd 20 each. he had about 900 and just wanted rid of them.
>
> On Thursday, 3 December 2020 at 21:45:50 UTC gregebert
900 Nick?? REALLY??
Got any you want to offload for a couple $ each? LOL.
On Thu, Dec 3, 2020 at 2:06 PM Nick wrote:
> Mine all came from Jim Scutio at usmintquartets man years ago- several
> crates at under usd 20 each. he had about 900 and just wanted rid of them.
>
> On Thursday, 3 December
Mine all came from Jim Scutio at usmintquartets man years ago- several
crates at under usd 20 each. he had about 900 and just wanted rid of them.
On Thursday, 3 December 2020 at 21:45:50 UTC gregebert wrote:
> Did anyone in this forum get their 7971's from PolyPaks a long time ago
>
each.
Michail Wilson
206-920-6312
From: neonixie-l@googlegroups.com On Behalf Of
gregebert
Sent: Thursday, December 3, 2020 1:46 PM
To: neonixie-l
Subject: Re: [neonixie-l] Re: B7971
Did anyone in this forum get their 7971's from PolyPaks a long time ago
(1970s/1980s) ? I recall they were
Did anyone in this forum get their 7971's from PolyPaks a long time ago
(1970s/1980s) ? I recall they were inexpensive, and many were sold in pairs
along with the socket/driver board after being scrapped from Lectrascan
units.
Just curious how some of you acquired a large stash.
On Thursday,
They're currently going for anywhere from 160 to 200 dollars on eBay. Pictures
of them being tested will help. Too rich for my blood at the moment, but I have
enough of them already :)
Best of luck selling them!
Cheers
Nick
Sent from my iPhone
> On Dec 3, 2020, at 10:32, Wo Tu wrote:
>
Nothing wrong with that. Heh.
But, damn, that’s even more expensive than me.
He should put up pictures. People like to see pretty colors.
Michail Wilson
206-920-6312
From: neonixie-l@googlegroups.com On Behalf Of
fax_awd
Sent: Wednesday, April 29, 2020 11:30 PM
To: neonixie-l
Subject:
Too bad it's only a starting price. So, I started.
Michail
From: neonixie-l@googlegroups.com on behalf of
fax_awd
Sent: Sunday, April 19, 2020 11:29 PM
To: neonixie-l
Subject: [neonixie-l] Re: B7971's on the bay
https://www.ebay.com/itm/164167398321
It was your posts that inspired me to have a go, with success and yes, the tube I had was shorted in the exact same place.Sent from my Huawei phone Original message From: Jeff Walton Date: Mon, 6 Apr 2020, 06:32To: neonixie-l@googlegroups.comSubject: Re: [neonixie-l] Re: B7971's
--From: Richard Scales
Date: 4/5/20 11:44 PM (GMT-06:00) To: neonixie-l
Subject: Re: [neonixie-l] Re: B7971's on the
bay I am equally hooked. It wont help you much but I had success with
removing a short using the banging method - I would not have thought it
possible but it worke
I am equally hooked. It wont help you much but I had success with removing
a short using the banging method - I would not have thought it possible but
it worked. I could actually see the change in position of the cathode in
question - a little geometry workout in advance ensured I was applying
The one-and-only "antenna" version of the b7971 I had in my 8-tube clock
failed as shorted segments after 2 years of usage. Not sure if others have
seen reliability issues with a particular tube style, but that's my
experience. I only use direct-drive, and the clock is well-protected from
The first link shows a little poisoning on the underscore.
The second link is mine. They went for $220 a tube.
I only posted for those people that really really really need one. (Did expect
a purchase of more than 1 at a time.)
I will post more, but again, only meant for people that don’t want
One of the two tubes is the rarer antenna tube. They made much less of
them. I actually try and avoid them because they don't match my others. I
have close to 30 tubes now and a bunch of clocks. I think Michail almost
had enough of the antenna tubes to make a clock with them maybe? I just
o, love the work area in the background. Looks like mine. Completely
> utilitized.
>
>
>
> Michail Wilson
>
> 206-920-6312
>
>
>
> *From:* neoni...@googlegroups.com [mailto:
> neoni...@googlegroups.com ] *On Behalf Of *Adam Munich
> *Sent:* Wed
You still have to be careful with these all-segments-lit-up photos, as I
think it would be a great way to disguise the fact that multiple segments
could be stuck on together. I have of couple of B-7971s that have two
segments that come on together due to some kind of internal short, and no
amount
in the background. Looks like mine. Completely
utilitized.
Michail Wilson
206-920-6312
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of Adam Munich
Sent: Wednesday, April 1, 2020 11:59 AM
To: neonixie-l
Subject: Re: [neonixie-l] Re: B7971's on the bay
I started too late unfortunately, I doubt I’ll have a shot at 8971s... but
here’s to hoping
On Tue, Mar 31, 2020 at 7:24 PM Michail Wilson wrote:
> Heh. And… I am still jealous you got a B8971 Mod clock as it’s one I
> didn’t see in time to buy one. It’s ok though… I made up for it by
>
Heh. And… I am still jealous you got a B8971 Mod clock as it’s one I didn’t
see in time to buy one. It’s ok though… I made up for it by spending money to
get a vast supply of tubes. So many now that I had to get a storage shed.
I keep telling myself…. Ok, that’s it. No more. Ha! (The
or...
Opportunity is knocking on Dalibor's door for a "Rb|7971"
--
You received this message because you are subscribed to the Google Groups
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To view
Personally i noticed a price-rise in alot of items on ebay, not just nixies or
tubes. I follow alot of searches of vintage tech and noticed that items are
selling alot more expensive than a half year ago... Prices for nixies, huge
tubes(decorative), other displays, radiation related items,
So the pictures I intended did not et posted on the Google Groups version.
The first image is the "fast" picture from
really? lol i always assume if the seller claim it is untested, the buyer
take all responsibility no matter the thing is good or bad..seems i am
still a newbie on ebay...
i miss this
really? lol i always assume if the seller claim it is untested, the buyer
take all responsibility no matter the thing is good or bad..seems i am
still a newbie on ebay...
i miss this
Not as crazy as this...
The problem with ebay is that if the tubes are bad, ebay will force the seller
to take them back. So, untested and sold as-is doesn’t matter to a buyer
anymore.
$150 is not bad. I’ve seen them sell for as much as $300 on ebay.
When I saw them going up, I couldn’t help but post my own. I
Please delete my mail. It was a mistake sorry.
Il giorno mar 27 ago 2019 alle ore 09:30 Jan Douwe Bakker <
jandouwe.bakke...@gmail.com> ha scritto:
> Why didn't you update Ebay. Now I have to ask for refund...3
>
> Il Mar 27 Ago 2019 05:01 Jim Faulkner ha scritto:
>
>> Hello,
>>
>> Sorry, I
Why didn't you update Ebay. Now I have to ask for refund...3
Il Mar 27 Ago 2019 05:01 Jim Faulkner ha scritto:
> Hello,
>
> Sorry, I don't have any more tubes to sell.
>
> Thank you for your inquiry.
>
> Jim
>
> -Original Message-
> From: Q L
> Sent: Aug 26, 2019 7:46 PM
> To:
Hello,Sorry, I don't have any more tubes to sell.Thank you for your inquiry.Jim-Original Message-
From: Q L
Sent: Aug 26, 2019 7:46 PM
To: neonixie-l
Subject: [neonixie-l] Re: B7971 value?
Hello: I want to buy six B-7971, Do you have any more?在 2019年7月4日星期四 UTC+8下午9:46:52，Jim
I’m going to (respectfully) disagree here. I used to be of the same opinion
(when they were 10 dollars a tube) and hence didn’t think they were a real
nixie tube. I now regret that stance. They’re fascinating devices with an
apparent ‘infinite’ life span (still haven’t had one die of ‘natural’
I have run into a few tubes like this.
I was lucky enough to have been able to dislodge them.
I believe you’re right in that it must have been in shipping as the seller of
one of them actually took a video of the tube working and had lit each segment
prior to shipping.
Similar to
Got any plastic model kits with "chrome" parts? Those are made by vacuum
metal deposition, essentially the same process by which the glass inside
those 7032 tubes we've been commenting on has become silvered. Put an
ohmmeter onto one of those model parts and see what kind of a reading you
get.
I will believe it when I see it.
On Tuesday, August 30, 2016 at 5:20:08 PM UTC-7, A.J. Franzman wrote:
>
> If you sputter enough metal onto any insulator, you can make it conduct.
>
> On Tuesday, August 30, 2016 at 1:28:06 PM UTC-7, j@my-deja.com wrote:
>>
>> I think this is improbable. On
If you sputter enough metal onto any insulator, you can make it conduct.
On Tuesday, August 30, 2016 at 1:28:06 PM UTC-7, j@my-deja.com wrote:
>
> I think this is improbable. On the one tube that I dissected*, the back
> substrate is an insulating white ceramic with an insulating black
I would believe it was NOS if it was accompanied by a pristine box, the
lettering on the tube was all sharp and crisp, and the pins were all
straight (with no tool marks from straightening) and unscratched (or maybe
one scratch from burn-in).
--
You received this message because you are
@googlegroups.com]
Sent: Tuesday, August 30, 2016 3:28 PM
To: neonixie-l
Subject: Re: [neonixie-l] Re: b7971 segment current
On Monday, August 29, 2016 at 9:31:39 PM UTC-7, A.J. Franzman wrote:
... They might be shorted to the back substrate and possibly even each other
via the substrate...
I think
On Monday, August 29, 2016 at 9:31:39 PM UTC-7, A.J. Franzman wrote:
>
> ... They might be shorted to the back substrate and possibly even each
> other via the substrate...
>
I think this is improbable. On the one tube that I dissected*, the back
substrate is an insulating white ceramic with
You got that backwards. Unused digits/segments in a nixie become "poisoned"
by stuff given off from the active segments. Trying to light those middle
vertical and diagonal segments in a tube from a well-used "Giant Nixie
Clock" from the early 1970's now, might reveal that those segments don't
On Saturday, August 27, 2016 at 1:38:28 PM UTC-7, rmp wrote:
>
> To the folks who are still running the "Giant Nixie Clock". From the early
> 1970's:
> ... as I recall it treated the tubes as 7-segment devices...Am I correct?
Yes. It was based on the MM5314 from National Semiconductor.
To the folks who are still running the "Giant Nixie Clock". From the early
1970's:
I built one of these way back when. Unfortunately, it is long gone, but as I
recall it treated the tubes as 7-segment devices, and so the 2 middle vertical
and the 4 diagonal segments will NEVER have been lit.
I ran across similar capacitor problem when using surface mount tantalum
capacitors and MLCC capacitors, without the proper working voltage across
them they behave poorly. I had to read a lot of design notes and datasheets
to realise that they did not fit my design, MLCC capacitors has to be
-l] Re: b7971 segment current
On Wednesday, August 24, 2016 at 12:21:56 AM UTC-7, Jeff Walton wrote:
>During the life of the clock, there were a couple failures of the caps in
the voltage doubler
When your cap(s) failed, was it catastrophic ? I've only had 1 electrolytic
f
On Wednesday, August 24, 2016 at 12:21:56 AM UTC-7, Jeff Walton wrote:
>
> >During the life of the clock, there were a couple failures of the caps in
> the voltage doubler
>
When your cap(s) failed, was it catastrophic ? I've only had 1
electrolytic fail in recent history, and it was a
Greg – my 1971 clock with Burroughs CK8754 nixie tubes ran 27/7/365 for over 35
years with no tube or digit failures. It used 74141 drivers driven at ~170
volts by a rectified line voltage doubler circuit using recommended anode
resistors from the example circuits out of the Texas Instruments
I'm still waiting for Dalibor to come up with a cheaper alternative...;-)
On Fri, Jun 6, 2014 at 2:17 PM, gregeb...@hotmail.com gregeb...@hotmail.com
wrote:
If you think that's bad, check out the Z568M's.set of 4 for $1500 US
I can't imagine what a set of six CD47's would go for.
--
Makes sense to me. They are roughly $15 tubes and the
currency has been devalued to about .01 of that value.
Original Message
From: gregeb...@hotmail.com
To: neonixie-l@googlegroups.com
Subject: [neonixie-l] Re: B7971 Ebay prices now
Date: Fri, 6 Jun 2014 14:17:53 -0700 (PDT)
If you
Among members here we have seen thousands of B7971 and as Michail wrote:
'I have not seen a completely black plate'. Should it be then assumed
that we can not use whitening of the back-plate behind segments as a
clear sign that the tube was used? Sorry for pushing this back over and
over. I
On 5/27/13 9:25 AM, Nick wrote:
I have never seen a guaranteed-no-ambiguity-absolutely-certain-NOS B7971.
Its known that when the tubes were swapped out from Ultronics panels that
the removed tubes were normally fine (never seen a failed B7971 either) and
placed into the expanded polystyrene
I have some boxes of 200 NL 5440As from Richardson with no markings at all
- nada.
Mind you, the boxes they came in are marked!
My guess is that these were intended to be white labelled, i.e. marked
just prior to shipment with the branding the purchaser requested...
Nick
--
You received
There was (is?) a German seller who sold B-7971 in identical styrofoam
boxes a few years ago. His came from unopened cardboard boxes which looked
to be original and those tubes were as clean as these and they did not have
any markings on them either. That seller was (is?) a respected seller of
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