from:"n1ist"

Re: AEG Paper from 1967 - was Re: [neonixie-l] New scope clock

2024-06-26 Thread n1ist

I have started to collect parts for this clock.  The best deal I have found 
on 3ASP1 tubes (turns out they are Siemens ones) is from 
BTB-Electronik, https://btb-elektronik.de/ for 40 euro.  Now to find or 
kludge the unobtanium side contact

/mike

On Saturday, June 22, 2024 at 4:09:26 PM UTC-4 Dekatron42 wrote:

> Grahame put it here, where he also put the Trochotron books I referred to 
> in another thread here at the forum, I just didn't find it when I was 
> looking for it the other day: 
> https://groups.google.com/g/neonixie-l/c/QKthffs5u5w/m/eMhlS4O2AQAJ
>
> /Martin
>
> On Saturday 22 June 2024 at 18:55:25 UTC+2 Toby Thain wrote:
>
>> On 2024-06-17 4:59 a.m., 'Grahame Marsh' via neonixie-l wrote:
>> > Hi All
>> > 
>> > Here's a scope clock that Nick Stock and I are just finishing off. It 
>> > was inspired by a AEG Paper from 1967 that Martin (Dekatron42) sent to 
>> me.
>> > 
>>
>> Hi,
>>
>> Is that paper online?
>>
>> Thanks again
>>
>>
>> > Two case designs, a common horizontal case and a vertical case like a 
>> > Simpsons MirroScope.
>> > 
>> > Details are here:
>> > 
>> > http://www.sgitheach.org.uk/scope4.html
>> > 
>> > Open Design - all Eagle, Gerbers, STL and DXF files available on my 
>> > Public Dropbox.
>> > 
>> > No source code as there is no microcontroller!
>> > 
>> > Enjoy Grahame
>> > 
>>
>>

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Re: [neonixie-l] Large weird round panaplex

2024-04-15 Thread n1ist

The Kr85 mark indicates that they have (or rather now have just a little, 
since the half life is 10.7 years) Krypton-85 mixed in the gas to help with 
the ionization

On Monday, April 15, 2024 at 6:09:42 PM UTC-4 Audrey wrote:

> That's fascinating Neil, I have a few boring Bendix panaplexes and was 
> curious about their manufacture. I believe they're marked Kr85.
>
> On Mon, Apr 15, 2024, 5:47 PM Neil QQ  wrote:
>
>> Until, at least, sometime in the early 2000's 90's King Radio (aka 
>> Bendix/King) was still selling NAV and COM radios using their own numeric 
>> panaplex type displays e.g. KX155, KX165.  These displays were custom 
>> designed and fabricated in-house in Olathe, KS.  To the best of my 
>> knowledge they were all neon orange monochrome.  The gas used was a 
>> proprietary witches brew that included several radioactive trace elements.  
>> I recall seeing a prototype ILS indicator similar to the one referenced in 
>> this thread.  I don't believe the King display was commercialized.
>>
>> An ILS display shows deviation from the localizer (right-left guidance) 
>> horizontally and the glideslope deviation (up-down) guidance vertically.  
>> By "keeping the needles centered" the ILS will guide a pilot to the runway 
>> threshold.  Such displays were also used for VOR navigation using only the 
>> right-left needles (or lit segments in this case).  In the simplest case 
>> they would provide guidance to the VOR station and identify the cardinal 
>> radial direction that was being flown to reach the station.  When executing 
>> a simple form of an instrument landing system (ILS) the pilot flies, at a 
>> particular altitude, along a "to" radial to find a particular VOR station.  
>> Once directly over the VOR the pilot flies on a specified VOR "from" radial 
>> until the localizer (right-left) and glideslope (up-down) needles move into 
>> the active range (no longer parked and "flagged" at the display extremes).  
>> From there the pilot "keeps the needles centered" until visual runway 
>> confirmation is obtained.
>>
>> On Saturday, April 13, 2024 at 11:27:41 PM UTC-5 Audrey wrote:
>>
>>> The seller is the author of this article.
>>> https://www.industrialalchemy.org/articleview.php?item=3247
>>>
>>> On Fri, Apr 12, 2024 at 11:36 AM Nick Andrews  
>>> wrote:
>>>
 Never seen or heard about this one before.


 https://www.ebay.com/itm/276389569367?mkcid=16=1=711-127632-2357-0=AkFpft62ST6=2047675=9S4jfnnKS4i_ver=artemis=COPY

 Anyone heard of this or have one?

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 .

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>>  
>> 
>> .
>>
>

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[neonixie-l] Re: Large weird round panaplex

2024-04-12 Thread n1ist

According to https://lampes-et-tubes.info/cd/cd167.php?l=e it is for a 
VOR/Localizer display for avionics


On Friday, April 12, 2024 at 11:36:50 AM UTC-4 Nick Andrews wrote:

> Never seen or heard about this one before.
>
>
> https://www.ebay.com/itm/276389569367?mkcid=16=1=711-127632-2357-0=AkFpft62ST6=2047675=9S4jfnnKS4i_ver=artemis=COPY
>
> Anyone heard of this or have one?
>

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Re: [neonixie-l] Replacing vintage AC cord

2024-04-09 Thread n1ist

And having a pair of Heyco pliers (I see them on eBay and clones on Amazon) 
will make it easier.  I have tried with regular pliers and always made a 
mess of them

On Friday, April 5, 2024 at 12:13:09 PM UTC-4 gregebert wrote:

> I've had battles with some of the strain-reliefs in the past. If they dont 
> break coming out, they often will when going back in so best to get some 
> spares if you can.
>
> I'm not sure who adopted the IEC power connectors first, but they deserve 
> a Nobel prize in my opinion.
>
> On Friday, April 5, 2024 at 12:57:00 AM UTC-7 Toby Thain wrote:
>
>> On 2024-04-04 9:55 p.m., Mac Doktor wrote: 
>> > I bought a Systron-Donner counter from eBay a few months back. 
>> Naturally 
>> > the cord was chopped off and the fuse cap removed. 
>> > 
>> > 
>> > I'm having trouble finding a suitable replacement.  It amounts to three 
>> > conductor zip cord. I know I'm not going find the original stuff, at 
>> > least not at a price mortals can afford. 
>>
>> Suitable 3 wire cords with North American plug are available at Digikey 
>> and Mouser, unless I'm misunderstanding the type you need. I even found 
>> a coiled one to replace a similar one on a Tektronix 602 that was 
>> wearing out. 
>>
>> --Toby 
>>
>> > 
>> > 
>> > Terry Bowman, KA4HJH 
>> > "The Mac Doctor" 
>> > 
>> > https://www.astarcloseup.com  
>> > 
>> > “...the book said something astonishing, a very big thought. The stars, 
>> > it said, were suns but very far away. The Sun was a star but close 
>> > up.”—Carl Sagan, "The Backbone Of Night",/Cosmos/, 1980 
>> > 
>> > 
>> > -- 
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>> > To unsubscribe from this group and stop receiving emails from it, send 
>> > an email to neonixie-l+...@googlegroups.com 
>> > . 
>> > To view this discussion on the web, visit 
>> > 
>> https://groups.google.com/d/msgid/neonixie-l/BB4D5909-1659-4D85-AD0C-48845479010F%40gmail.com
>>  
>> <
>> https://groups.google.com/d/msgid/neonixie-l/BB4D5909-1659-4D85-AD0C-48845479010F%40gmail.com?utm_medium=email_source=footer>.
>>  
>>
>>
>>

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[neonixie-l] Re: Recommended low-cost tube testing

2023-09-01 Thread n1ist

Just use a 170v power supply, a suitable anode resistor, and switches (or 
clipleads or jumpers) to ground each cathode in turn.  That's the simplest 
solution.

On Friday, September 1, 2023 at 4:56:57 PM UTC-4 HikariFaith wrote:

> I have a bunch of tubes (NL-8422's and IN-12's) I haven't been able to 
> test yet. I'm working on a new ultra-thin 8-tube nixie clock and calendar 
> based off of CNLohr's tube driver design, but replacing the CH32V003 with 
> an ESP32S2-MINI-2. Having come into this project as a complete electronics 
> newbie, I'm not sure if my circuit will work properly and I haven't yet 
> finalized my program. So while I'm working on this, and preparing to test 
> my drivers in a single-tube setup, I'd like to test out my tubes to see if 
> they're all in good working order in the meantime. What do you all 
> recommend as good setups for testing my tubes? I'm looking for something 
> low-cost, yet still reliable and easy to use so I can test each numeral on 
> the tubes.

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

2019-08-13 Thread n1ist

Vgs(max) for the NDP6020P is 8v, so it may have been damaged by feeding it 
12v.  I'd add a resistor between the NDP6020P gate and the 2N7000 (so the 
gate of the NDP gets pulled to 7V above ground (Vgs of 5V) when you want it 
on.

/mike

On Tuesday, August 13, 2019 at 9:14:16 AM UTC-4, Mitch wrote:
>
> 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 large 
> displays, and they run on a higher voltage. I want to stay with that chip. 
> Help is appreciated. Thanks in advance.
>

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[neonixie-l] Re: IN-28's in real life...

2019-07-30 Thread n1ist

I don't speak Russian, but it looks like a quad D-type flip flop.  Almost 
like a 74LS175 but that has a common clock while the part in question has 
separate clocks per pair of flops.  I guess you could try a pair of 74LS74
/mike

On Tuesday, July 30, 2019 at 8:59:00 PM UTC-4, Tyler Bourne wrote:
>
> I've gotten back to work on fixing this clock but I'm stuck on a chip.
>
> It's a 134РМ1.  I found a sort of datasheet here:  
> https://eandc.ru/pdf/mikroskhema/k134rm1.pdf
>
> Translation doesn't really help much with this one though, something about 
> storage elements.
>
> Can any of our Russian speakers help me out?
>

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[neonixie-l] Re: OT: Help buying banana sockets manufactured by Abbattron / HH Smith, anyone?

2019-04-15 Thread n1ist

A quick search shows that Newark and Allied both have the HH Smith ones, 
though the Allied black ones are on back order

On Sunday, April 14, 2019 at 12:28:02 PM UTC-4, Dekatron42 wrote:
>
> Hi,
>
> I am looking for three (3) each of black and red banana sockets 
> manufactured by Abbatron / HH Smith numbered 1509-102 (red) and 1509-103 
> (black).
>
> For some reason all of the companies carrying these that ship to Sweden 
> have decided to demand that you have a company, that you buy at least 100 
> pieces and that you pay a hefty extra cost for buying them, above an extra 
> shipping cost which is normally free - now, I don't have a company so I 
> trip there already. I can't find them on eBay or any other surplus sites 
> either (there are a few 100 and 50 packages sold on eBay only white and 
> black but no red that I can see).
>
> These banana sockets aren't really expensive or anything, it is just that 
> they have two flat sides and I need them to repair an old oscilloscope, a 
> Conar 255 Solid State Oscilloscope, and they are identical to the original 
> ones and fit in the panel holes.
>
> Can anyone here help me to buy them and ship them to me? I'll pay for them 
> and the shipping of course!
>
> /Martin
>

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[neonixie-l] Re: So, what have I got.....

2015-03-23 Thread n1ist

Looks like this clock:
http://www.webx.dk/oz2cpu/clock/nixie-clock2x3.htm
/mike

On Monday, March 23, 2015 at 3:21:04 PM UTC-4, Kerry Borgne wrote:

https://lh3.googleusercontent.com/-NsRTv146n-M/VRBnSj0EnLI/AB8/vz84JRN-Gm0/s1600/IMG_0369.JPG

https://lh4.googleusercontent.com/-BP6peiErpeI/VRBnNYjq3PI/AB0/oNt3MMtyZfM/s1600/IMG_0368.JPG

Finally getting around to digging in the various boxes that have
accumulated over the years and have come across a few things that I have no
idea what there were for.. why I bought them, what I was
planning..

Amongst them was this 'kit' pictured above . It consists of two
un-drilled circuit boards various resistors/caps transistors and ICs etc.
I have NO idea what it could be. It was purchased from Claus Urbach way
back in 2003 (at least that's the date on the package it came in.

The Ics are: 16F876-04/SP, uPB74141d and KM155N01 (not sure of the last as
the marking has faded) The board has OZ2CPU 1.03 etched on it.

There is no documentation included with the 'kit'. Does anyone have any
idea as to what I bought? and where I can locate some info to help put this
together?

Thanks,

Kerry

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[neonixie-l] Re: Just got 80 new Burroughs PIXIE B-9012 tubes, if any interest

2014-10-30 Thread n1ist

I too would be interested in some.
Thanks.
/mike

On Monday, October 20, 2014 5:06:34 PM UTC-4, Walter2 wrote:

These are the same glass diameter as the common B-5092/8421 nixies (not as
tall), but instead have a circle of 10 digits on the face, 0-9 clockwise,
with zero at the top.

Unlike Nixies, more than one digit can be on at the same time (if cathode
resistors are used, rather than a common anode resistor). They need only
+150VDC, and very little current. The digit is small, but the appearance
is very interesting, like a Dekatron, but with digits rather than dots. I
don't ever recall seeing them used in any commercial gear, but presumably
they did appear someplace, maybe another list member has that info. They
can be used as status displays to show up to 10 data items at the same
time. They can almost be used as a single tube for hours as well, because
two digits can be on at one time (1+0 to show 10, but NOT 1+1 to show 11,
1+2 to show 12, for example), a novel and more clock-face-like
appearance, but not really ideal.

The base is a non-standard 13 pin (3 center pins, outer circle of 10), so
I have no hope for sockets, but clearly loose pins will work fine to a
PCB. Because the numbers appear to race around the outer diameter of the
tube when cycled, they would provide very attractive seconds/minutes
displays in clocks. Driving is dead simple, ground the cathode to light,
just as with regular Nixies, but less current is required (larger
resistor). Because more than one can be on at a time, fading is possible
to enhance motion. There are also simliar tubes from Philips in europe, but
their drive is quite complex, and they are not interchangeable with these.

Anyway, I will have them posted up to Sphere Research shortly, or you can
just email me for more details. I have the factory data sheet as well, and
I will email the PDF to anybody interested. They will be quite cheap, but
there's only this one single batch available, no more stock after this, and
frankly I was surprised to get these. The appearance of this batch is
excellent.

all the best,
walter ( walter2 -at- sphere.bc.ca )
sphere research corp. ( www.sphere.bc.ca )

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Re: [neonixie-l] Re: New power supply design

2013-09-01 Thread n1ist

They look like relays, likely controlled by the thumbwheel switch in front, 
to set the value of the load bank.
/mike


On Sunday, September 1, 2013 8:16:57 PM UTC-4, jrehwin wrote:

  The 1474 design is for high power and high voltage (Up to 75W and up to 
 600V on board, no multiplication).  It will be available in about 2 weeks 
 in the 150-300V adjustable version. 

 I'm waiting for the 600V version.  There were some cute little fixed 600V 
 power supplies on ebay a while back, but I've used all the ones I bought, 
 and haven't seen any more. 

  New load bank: http://ppl.ug/ZDU68hsXQik/ 

 What are the objects (that look somewhat like 9V rectangular batteries) in 
 front? 

 Is that slab of aluminum sufficient heatsink?  I suppose you could blow a 
 fan on it, or even bolt on a finned heatsink if need be. 

 - John 



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