[neonixie-l] Re: My first two-digit Nixie tube!

[Dekatron42]

Nice!
 
So when are you ready to take orders? ;)
 
/Martin

On Tuesday, October 16, 2012 3:56:02 PM UTC+2, Jens Boos wrote:

> Hi folks, 
>
> I did it: I have just built my first two-digit Nixie tube! I call her 
> "NX-LS-1". 
>
> She contains the digits 0 and 1 as well as a zig-zag anode. Filling is 
> (as usual) air at 15mbar. I will have my needle valve shortly, then I 
> will be able to do some neon thingies. 
>
> See some pictures here: 
>
> http://www.jb-electronics.de/tmp/nx-ls-1_1.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_2.jpg 
>
> The digits glow in a nice purple, but my camera has a hard time to grasp 
> the color. The truth is somewhat in between the very purple and very 
> blue color in the following pictures: 
>
> http://www.jb-electronics.de/tmp/nx-ls-1_3.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_4.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_5.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_6.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_7.jpg 
>
> Jens 
>

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[neonixie-l] Re: My first two-digit Nixie tube!

[dr pepper]

If you can make a nixie tube, which does look cool by the way, I'm
sure you can throw together a spotter from an old microwave tranny.

I have an old british federal spot welder controller, but it aint much
use as it didnt come with the little number plugs you use to set the
times.

On 16 Oct, 20:21, "Tidak Ada"  wrote:
> Bullshit, I did not remember you when I was at the Philips CRT plant,  there
> was a complete bobine of chrome-nickle steel wire of about the thickness you
> used. Problem would be to weld it to the feed-trough wires. Soldering this
> wire is not possible; it has to be spot welded.
> In case you have interest, I can send you some photo's of things I met
> there, to give an idea. So I have here  a frame, that is used to align the
> electrodes in a electron gun, that might give you an idea how to align the
> figures in a nixie. The frame is also used to press the glass ceramic studs
> that keep the electrodes in place in the tube. Also interesting photo's I
> made of a glassblower's tourch and the several satellite burners to place on
> top. Sadly I forgot to take a photo of the machine that does the work. I was
> too busy for a TCA member in Australia who has interest in materials and
> equipement for his experiments to make klystrons.
> There where rows of micro spotwelders on long tables, but it was too much
> work to remove them. I found one spotwelding head that was not mounted and a
> transformer for 5 V 330 A. I could take it home. Unfortunately the welding
> head is missing some parts, however, I think a can fix that. The price was
> low enough to take the risk. The most imortant is to develop a driving
> supply that doses the current and time. Powerelectronics are not really my
> favorite field
>
> eric
>
>   _
>
> From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
> Behalf Of jb-electronics
> Sent: dinsdag 16 oktober 2012 19:34
> To: neonixie-l@googlegroups.com
> Subject: Re: [neonixie-l] Re: My first two-digit Nixie tube!
>
> Thanks! The tube does not have a high lifespan: I used ordinary Dumet wire
> for the digits as well (convenience) and this sputters nicely; also, air is
> not the most ideal gas for discharge tubes, although it does look very nice
> (much nicer than I ever thought).
>
> I briefly thought about making some more of these (maybe 10) and build them
> into a binary clock or something ;-) But driving them is not practical
> because they do need 550V DC to strike.
>
> Jens
>
> Nice!
>
> So when are you ready to take orders? ;)
>
> /Martin
>
> On Tuesday, October 16, 2012 3:56:02 PM UTC+2, Jens Boos wrote:
>
> Hi folks,
>
> I did it: I have just built my first two-digit Nixie tube! I call her
> "NX-LS-1".
>
> She contains the digits 0 and 1 as well as a zig-zag anode. Filling is
> (as usual) air at 15mbar. I will have my needle valve shortly, then I
> will be able to do some neon thingies.
>
> See some pictures here:
>
> http://www.jb-electronics.de/
> <http://www.jb-electronics.de/tmp/nx-ls-1_1.jpg> 
> tmp/nx-ls-1_1.jpghttp://www.jb-electronics.de/
> <http://www.jb-electronics.de/tmp/nx-ls-1_2.jpg> tmp/nx-ls-1_2.jpg
>
> The digits glow in a nice purple, but my camera has a hard time to grasp
> the color. The truth is somewhat in between the very purple and very
> blue color in the following pictures:
>
> http://www.jb-electronics.de/
> <http://www.jb-electronics.de/tmp/nx-ls-1_3.jpg> 
> tmp/nx-ls-1_3.jpghttp://www.jb-electronics.de/
> <http://www.jb-electronics.de/tmp/nx-ls-1_4.jpg> 
> tmp/nx-ls-1_4.jpghttp://www.jb-electronics.de/
> <http://www.jb-electronics.de/tmp/nx-ls-1_5.jpg> 
> tmp/nx-ls-1_5.jpghttp://www.jb-electronics.de/
> <http://www.jb-electronics.de/tmp/nx-ls-1_6.jpg> 
> tmp/nx-ls-1_6.jpghttp://www.jb-electronics.de/
> <http://www.jb-electronics.de/tmp/nx-ls-1_7.jpg> tmp/nx-ls-1_7.jpg
>
> Jens
>
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[neonixie-l] Re: My first two-digit Nixie tube!

[dr pepper]

I've wondered about using little to92 triacs to run nixies from,you
can get them up to 800v fairly cheap, you'd need ac to power the tubes
of course.

On 18 Oct, 07:51, "JohnK"  wrote:
> They are cute !
> Make more and do a Binary Clock. Use relays/valves  if you don't want to rig
> semis for the 550V+ .
>
> John K
> Australia
>
>
>
> - Original Message -
> From: "jb-electronics" 
> To: 
> Sent: Wednesday, October 17, 2012 12:26 AM
> Subject: [neonixie-l] My first two-digit Nixie tube!
>
> > Hi folks,
>
> > I did it: I have just built my first two-digit Nixie tube! I call her
> > "NX-LS-1".
>
> > She contains the digits 0 and 1 as well as a zig-zag anode. Filling is (as
> > usual) air at 15mbar. I will have my needle valve shortly, then I will be
> > able to do some neon thingies.
>
> > See some pictures here:
>
> >http://www.jb-electronics.de/tmp/nx-ls-1_1.jpg
> >http://www.jb-electronics.de/tmp/nx-ls-1_2.jpg
>
> > The digits glow in a nice purple, but my camera has a hard time to grasp
> > the color. The truth is somewhat in between the very purple and very blue
> > color in the following pictures:
>
> >http://www.jb-electronics.de/tmp/nx-ls-1_3.jpg
> >http://www.jb-electronics.de/tmp/nx-ls-1_4.jpg
> >http://www.jb-electronics.de/tmp/nx-ls-1_5.jpg
> >http://www.jb-electronics.de/tmp/nx-ls-1_6.jpg
> >http://www.jb-electronics.de/tmp/nx-ls-1_7.jpg
>
> > Jens
>
> > --
> > You received this message because you are subscribed to the Google Groups
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> > To post to this group, send an email to neonixie-l@googlegroups.com.
> > To unsubscribe from this group, send email to
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> > quoted text -
>
> - Show quoted text -

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[neonixie-l] Re: My first two-digit Nixie tube!

[Dekatron42]

Wouldn't it be possible to use a biasing network with resistors like they 
used to do when transistors couldn't handle the 170-180V that a Nixie 
needed in the early days? Or perhaps run the Nixies from a 
positive/negative powersupply split in half with +/-275V and a biasing 
network with resistors?
 
/Martin
 

On Thursday, October 18, 2012 9:44:39 AM UTC+2, dr pepper wrote:

> I've wondered about using little to92 triacs to run nixies from,you 
> can get them up to 800v fairly cheap, you'd need ac to power the tubes 
> of course. 
>
> On 18 Oct, 07:51, "JohnK"  wrote: 
> > They are cute ! 
> > Make more and do a Binary Clock. Use relays/valves  if you don't want to 
> rig 
> > semis for the 550V+ . 
> > 
> > John K 
> > Australia 
> > 
> > 
> > 
> > - Original Message - 
> > From: "jb-electronics"  
> > To: > 
> > Sent: Wednesday, October 17, 2012 12:26 AM 
> > Subject: [neonixie-l] My first two-digit Nixie tube! 
> > 
> > > Hi folks, 
> > 
> > > I did it: I have just built my first two-digit Nixie tube! I call her 
> > > "NX-LS-1". 
> > 
> > > She contains the digits 0 and 1 as well as a zig-zag anode. Filling is 
> (as 
> > > usual) air at 15mbar. I will have my needle valve shortly, then I will 
> be 
> > > able to do some neon thingies. 
> > 
> > > See some pictures here: 
> > 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_1.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_2.jpg 
> > 
> > > The digits glow in a nice purple, but my camera has a hard time to 
> grasp 
> > > the color. The truth is somewhat in between the very purple and very 
> blue 
> > > color in the following pictures: 
> > 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_3.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_4.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_5.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_6.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_7.jpg 
> > 
> > > Jens 
> > 
> > > -- 
> > > You received this message because you are subscribed to the Google 
> Groups 
> > > "neonixie-l" group. 
> > > To post to this group, send an email to 
> > > neoni...@googlegroups.com. 
>
> > > To unsubscribe from this group, send email to 
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> > > quoted text - 
> > 
> > - Show quoted text - 
>

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[neonixie-l] Re: My first two-digit Nixie tube!

[Michel]

Nice one Jens! I'd go for the binary clock, why not?

I was thinking, is it possible to use a high voltage SCR in series with a 
lower voltage NPN in a construction like this:
http://xiac.com/Images/SCR_NPN.gif

The NPN can then turn off the SCR, so you can use a normal DC power supply.

Michel


On Thursday, October 18, 2012 6:44:39 PM UTC+11, dr pepper wrote:
>
> I've wondered about using little to92 triacs to run nixies from,you 
> can get them up to 800v fairly cheap, you'd need ac to power the tubes 
> of course. 
>
> On 18 Oct, 07:51, "JohnK"  wrote: 
> > They are cute ! 
> > Make more and do a Binary Clock. Use relays/valves  if you don't want to 
> rig 
> > semis for the 550V+ . 
> > 
> > John K 
> > Australia 
> > 
> > 
> > 
> > - Original Message - 
> > From: "jb-electronics"  
> > To: > 
> > Sent: Wednesday, October 17, 2012 12:26 AM 
> > Subject: [neonixie-l] My first two-digit Nixie tube! 
> > 
> > > Hi folks, 
> > 
> > > I did it: I have just built my first two-digit Nixie tube! I call her 
> > > "NX-LS-1". 
> > 
> > > She contains the digits 0 and 1 as well as a zig-zag anode. Filling is 
> (as 
> > > usual) air at 15mbar. I will have my needle valve shortly, then I will 
> be 
> > > able to do some neon thingies. 
> > 
> > > See some pictures here: 
> > 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_1.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_2.jpg 
> > 
> > > The digits glow in a nice purple, but my camera has a hard time to 
> grasp 
> > > the color. The truth is somewhat in between the very purple and very 
> blue 
> > > color in the following pictures: 
> > 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_3.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_4.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_5.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_6.jpg 
> > >http://www.jb-electronics.de/tmp/nx-ls-1_7.jpg 
> > 
> > > Jens 
> > 
> > > -- 
> > > You received this message because you are subscribed to the Google 
> Groups 
> > > "neonixie-l" group. 
> > > To post to this group, send an email to 
> > > neoni...@googlegroups.com. 
>
> > > To unsubscribe from this group, send email to 
> > > neonixie-l+...@googlegroups.com . 
> > > For more options, visithttps://groups.google.com/groups/opt_out.-Hide 
> > > quoted text - 
> > 
> > - Show quoted text - 
>

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[neonixie-l] Re: My first two-digit Nixie tube!

[fixitsan]

First of all, well done ! Good work :)

I know the digits are made of dumet wire, what plans do you have for trying 
other materials ?

I have read previously that molybdenum wire, or molybdenum coated elements 
in tubes are often used.
Is something like this suitable I wonder ? I see it is being sold as an 
electron tube related product /

http://www.ebay.co.uk/itm/Pure-Molybdenum-Wire-0-020-5mm-x-10ft-3m-/320555755603?pt=LH_DefaultDomain_2&hash=item4aa29ca853


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[neonixie-l] Re: My first two-digit Nixie tube!

[threeneurons]

Keep up the good work !

If you need have some DXF files (vector format) on the digits you want, or 
a image of the whole set, in a raster format, throw in my direction. I'm in 
good with a guy that owns a steel cutting laser. 4000W of CO2 goodness. 
He'll run small jobs for me for nothing, as long as I don't abuse it. That 
means pester him for work too often.

I still want that "1 - 12" "tri-quad" tube. 3 anodes x 4 cathode sets (of 
3).
  

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[neonixie-l] Re: My first two-digit Nixie tube!

[dr pepper]

At last someone with a lab smaller than mine, I recently moved house
and aquired half a room for my 'shop, only problem is I still dont
have time to use it.



On 20 Oct, 23:43, jb-electronics  wrote:
> Hi,
>
> here are the pictures of one of the colon tubes (as always, air at 15mbar):
>
> http://www.jb-electronics.de/tmp/gl-ls-8_1.jpghttp://www.jb-electronics.de/tmp/gl-ls-8_2.jpg
>
> Sadly, the upper dot does not always light up. It was a silly idea to
> parallel the two cathodes, next time I will have the two dots wired
> seperately.
>
> Jens
>
>
>
> > Hi again,
>
> > here is a picture of my "lab" / desk. I do not have a separate room
> > for my tube making, so I have to clean off the desk every time I need
> > to work for the university. It does not take much time, and so it is
> > actually an advantage because it forces me to keep my lab tidy.
>
> >http://www.jb-electronics.de/tmp/lab.jpg
>
> > See the t-connector? This will be replaced by a connector with an
> > additional outlet (so 4 in total) for my needle valve.
>
> > I have been trying to build two colon tubes today, with some minor
> > success. Will post pictures tomorrow.
>
> > Jens
>
> >> Hello!
>
> >> By the way, how do You measure the pressure in the system? You
> >> mentioned the glow lamp is filled on 15mBar...
>
> >> Could You send a photo of the system You use for pumping and filling
> >> the glow lamps?
>
> >> The capacitor welder You have will work well, it is not suitable for
> >> welding materials with high melting temperature like tungsten and
> >> molybdenum, but for steel, nickel and so it is very good!
>
> >> > The problem with stainless steel wire is that it outgasses; I have
> >> a glow lamp with two stainless steel electrodes and it glows in a
> >> white-ish blue color, very strange. Will post a picture later this
> >> weekend if I don't forget.
> >> the bluish color is not outgassing, outgassing is when the metal
> >> releives trapped air, oxygen, CO2, moisture and so into vacuum, You
> >> can avoid that by heating the wire into red for a minute or so just
> >> before sealing and pumping.. Each metal behaves differently in
> >> discharge - different voltages and so, so it could be because of that..
>
> >> Dalibor
>
> >> Dne 19.10.2012 7:29, jb-electronics napsal(a):
> >>> Hi guys,
>
> >>> thanks for your advice. I think the problem is the one Dalibor
> >>> pointed out: with Dumet wire the sputtering is very high. Also,
> >>> since I am using no noble gas (except for the less than 1 percent
> >>> there is in ambient air), the cathodes are having a much harder time
> >>> anyway. So for now I will not install these tubes in a permanent
> >>> circuit since they would only last for a few hours.
>
> >>> I will wait for my needle valve (will be here any day now) and try
> >>> with Neon (and some day with Argon, too, of course). The ignition
> >>> voltage should be drastically lower, and the visibility should
> >>> increase.
>
> >>> The problem with stainless steel wire is that it outgasses; I have a
> >>> glow lamp with two stainless steel electrodes and it glows in a
> >>> white-ish blue color, very strange. Will post a picture later this
> >>> weekend if I don't forget.
>
> >>> Ah, by the way, I already have a small capacitor-based spot welder,
> >>> and so far, for my purposes, it has served me well:
> >>>http://www.robbe.de/welma-2000-punktschweissgeraet.html?___store=en
>
> >>> Jens
>
>  Keep up the good work !
>
>  If you need have some DXF files (vector format) on the digits you
>  want, or a image of the whole set, in a raster format, throw in my
>  direction. I'm in good with a guy that owns a steel cutting laser.
>  4000W of CO2 goodness. He'll run small jobs for me for nothing, as
>  long as I don't abuse it. That means pester him for work too often.
>
>  I still want that "1 - 12" "tri-quad" tube. 3 anodes x 4 cathode
>  sets (of 3).
>  --
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> - Show quoted text -

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[neonixie-l] Re: My first two-digit Nixie tube!

[AndrakondrA (Daniil)]

Awesome work Jens! :)

I'm also joining nixie creation race. :)

Today  first goal is achieved -simple incandescent light bulb.
Things done -
Glass to metal seal - Kovar to 7052 to Uranium glass to 7740
Hand glassblowing.
Evacuation process.

Pic:

http://www.flickr.com/photos/8838161@N02/8120086511/in/set-72157631845560157/
http://www.flickr.com/photos/8838161@N02/8120088838/in/set-72157631845560157/
http://www.flickr.com/photos/8838161@N02/8120077455/in/set-72157631845560157/
http://www.flickr.com/photos/8838161@N02/8120091348/in/set-72157631845560157/

Daniil.

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[neonixie-l] Re: My first two-digit Nixie tube!

[kay486]

Somebody might be interested in this, i decided to post it here because i 
didnt want to start a new topic. 
http://www.elektroda.pl/rtvforum/topic830658.html

On Tuesday, 16 October 2012 14:56:02 UTC+1, Jens Boos wrote:
>
> Hi folks, 
>
> I did it: I have just built my first two-digit Nixie tube! I call her 
> "NX-LS-1". 
>
> She contains the digits 0 and 1 as well as a zig-zag anode. Filling is 
> (as usual) air at 15mbar. I will have my needle valve shortly, then I 
> will be able to do some neon thingies. 
>
> See some pictures here: 
>
> http://www.jb-electronics.de/tmp/nx-ls-1_1.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_2.jpg 
>
> The digits glow in a nice purple, but my camera has a hard time to grasp 
> the color. The truth is somewhat in between the very purple and very 
> blue color in the following pictures: 
>
> http://www.jb-electronics.de/tmp/nx-ls-1_3.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_4.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_5.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_6.jpg 
> http://www.jb-electronics.de/tmp/nx-ls-1_7.jpg 
>
> Jens 
>

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[jb-electronics]

Thanks! The tube does not have a high lifespan: I used ordinary Dumet 
wire for the digits as well (convenience) and this sputters nicely; 
also, air is not the most ideal gas for discharge tubes, although it 
does look very nice (much nicer than I ever thought).


I briefly thought about making some more of these (maybe 10) and build 
them into a binary clock or something ;-) But driving them is not 
practical because they do need 550V DC to strike.


Jens



Nice!
So when are you ready to take orders? ;)
/Martin

On Tuesday, October 16, 2012 3:56:02 PM UTC+2, Jens Boos wrote:

Hi folks,

I did it: I have just built my first two-digit Nixie tube! I call her
"NX-LS-1".

She contains the digits 0 and 1 as well as a zig-zag anode.
Filling is
(as usual) air at 15mbar. I will have my needle valve shortly, then I
will be able to do some neon thingies.

See some pictures here:

http://www.jb-electronics.de/tmp/nx-ls-1_1.jpg

http://www.jb-electronics.de/tmp/nx-ls-1_2.jpg


The digits glow in a nice purple, but my camera has a hard time to
grasp
the color. The truth is somewhat in between the very purple and very
blue color in the following pictures:

http://www.jb-electronics.de/tmp/nx-ls-1_3.jpg

http://www.jb-electronics.de/tmp/nx-ls-1_4.jpg

http://www.jb-electronics.de/tmp/nx-ls-1_5.jpg

http://www.jb-electronics.de/tmp/nx-ls-1_6.jpg

http://www.jb-electronics.de/tmp/nx-ls-1_7.jpg


Jens

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RE: [neonixie-l] Re: My first two-digit Nixie tube!

[Tidak Ada]

Bullshit, I did not remember you when I was at the Philips CRT plant,  there
was a complete bobine of chrome-nickle steel wire of about the thickness you
used. Problem would be to weld it to the feed-trough wires. Soldering this
wire is not possible; it has to be spot welded.
In case you have interest, I can send you some photo's of things I met
there, to give an idea. So I have here  a frame, that is used to align the
electrodes in a electron gun, that might give you an idea how to align the
figures in a nixie. The frame is also used to press the glass ceramic studs
that keep the electrodes in place in the tube. Also interesting photo's I
made of a glassblower's tourch and the several satellite burners to place on
top. Sadly I forgot to take a photo of the machine that does the work. I was
too busy for a TCA member in Australia who has interest in materials and
equipement for his experiments to make klystrons. 
There where rows of micro spotwelders on long tables, but it was too much
work to remove them. I found one spotwelding head that was not mounted and a
transformer for 5 V 330 A. I could take it home. Unfortunately the welding
head is missing some parts, however, I think a can fix that. The price was
low enough to take the risk. The most imortant is to develop a driving
supply that doses the current and time. Powerelectronics are not really my
favorite field
 
eric

  _  

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of jb-electronics
Sent: dinsdag 16 oktober 2012 19:34
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] Re: My first two-digit Nixie tube!


Thanks! The tube does not have a high lifespan: I used ordinary Dumet wire
for the digits as well (convenience) and this sputters nicely; also, air is
not the most ideal gas for discharge tubes, although it does look very nice
(much nicer than I ever thought).

I briefly thought about making some more of these (maybe 10) and build them
into a binary clock or something ;-) But driving them is not practical
because they do need 550V DC to strike.

Jens




Nice!
 
So when are you ready to take orders? ;)
 
/Martin

On Tuesday, October 16, 2012 3:56:02 PM UTC+2, Jens Boos wrote:

Hi folks, 

I did it: I have just built my first two-digit Nixie tube! I call her 
"NX-LS-1". 

She contains the digits 0 and 1 as well as a zig-zag anode. Filling is 
(as usual) air at 15mbar. I will have my needle valve shortly, then I 
will be able to do some neon thingies. 

See some pictures here: 

http://www.jb-electronics.de/
<http://www.jb-electronics.de/tmp/nx-ls-1_1.jpg> tmp/nx-ls-1_1.jpg 
http://www.jb-electronics.de/
<http://www.jb-electronics.de/tmp/nx-ls-1_2.jpg> tmp/nx-ls-1_2.jpg 

The digits glow in a nice purple, but my camera has a hard time to grasp 
the color. The truth is somewhat in between the very purple and very 
blue color in the following pictures: 

http://www.jb-electronics.de/
<http://www.jb-electronics.de/tmp/nx-ls-1_3.jpg> tmp/nx-ls-1_3.jpg 
http://www.jb-electronics.de/
<http://www.jb-electronics.de/tmp/nx-ls-1_4.jpg> tmp/nx-ls-1_4.jpg 
http://www.jb-electronics.de/
<http://www.jb-electronics.de/tmp/nx-ls-1_5.jpg> tmp/nx-ls-1_5.jpg 
http://www.jb-electronics.de/
<http://www.jb-electronics.de/tmp/nx-ls-1_6.jpg> tmp/nx-ls-1_6.jpg 
http://www.jb-electronics.de/
<http://www.jb-electronics.de/tmp/nx-ls-1_7.jpg> tmp/nx-ls-1_7.jpg 

Jens 


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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[Dalibor Farný]

Good job Jens!

Molybdenum is not suitable for our purposes, it has low sputtering, but is
very difficult to weld because of the high melting point. If You can get
even lower sputtering with stainless steel electrodes in combination with
mercury filled tube. This is the way how were the latest nixies made.. use
just stanless steel electrodes first for the beginning. More info about
sputtering is in the Weston's book.

I did an experiment with glow tube using soda glass and dumet wire, the
electrodes were made from stainless steel, however the dumet were sticking
out the seal into the tube, 5mm or so.. I run that tube for three weeks,
tere were no signs of sputtering from the steel, but there formed a dark
area around the dumet.. it made so large area that it formed a conductive
layer and shortcircuited the supply, heated the tube and the tube cracked..
but I am sure the tube with steel only would last for long time..

Look on www.tubecrafter.com, Ron describes here a pinch welder what could
be made for cheap, just a microwave transformer, rheostat and timing
circuit (I may send a drawing), I placed some photos of mine on my blog in
latest post. This stuff is really must..

I did some progress on my glass lathe, I should be able to rotate the
stationary chuck soon..

Dalibor Farný
http://dalibor.farny.cz

sent from Samsung Galaxy Pad
Dne 18.10.2012 10:55 "fixitsan"  napsal(a):

>
> First of all, well done ! Good work :)
>
> I know the digits are made of dumet wire, what plans do you have for
> trying other materials ?
>
> I have read previously that molybdenum wire, or molybdenum coated elements
> in tubes are often used.
> Is something like this suitable I wonder ? I see it is being sold as an
> electron tube related product /
>
>
> http://www.ebay.co.uk/itm/Pure-Molybdenum-Wire-0-020-5mm-x-10ft-3m-/320555755603?pt=LH_DefaultDomain_2&hash=item4aa29ca853
>
>
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>
>

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[jb-electronics]

Hi guys,

thanks for your advice. I think the problem is the one Dalibor pointed 
out: with Dumet wire the sputtering is very high. Also, since I am using 
no noble gas (except for the less than 1 percent there is in ambient 
air), the cathodes are having a much harder time anyway. So for now I 
will not install these tubes in a permanent circuit since they would 
only last for a few hours.


I will wait for my needle valve (will be here any day now) and try with 
Neon (and some day with Argon, too, of course). The ignition voltage 
should be drastically lower, and the visibility should increase.


The problem with stainless steel wire is that it outgasses; I have a 
glow lamp with two stainless steel electrodes and it glows in a 
white-ish blue color, very strange. Will post a picture later this 
weekend if I don't forget.


Ah, by the way, I already have a small capacitor-based spot welder, and 
so far, for my purposes, it has served me well: 
http://www.robbe.de/welma-2000-punktschweissgeraet.html?___store=en


Jens


Keep up the good work !

If you need have some DXF files (vector format) on the digits you 
want, or a image of the whole set, in a raster format, throw in my 
direction. I'm in good with a guy that owns a steel cutting laser. 
4000W of CO2 goodness. He'll run small jobs for me for nothing, as 
long as I don't abuse it. That means pester him for work too often.


I still want that "1 - 12" "tri-quad" tube. 3 anodes x 4 cathode sets 
(of 3).

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[Dalibor Farný]

Hello!

By the way, how do You measure the pressure in the system? You mentioned 
the glow lamp is filled on 15mBar...


Could You send a photo of the system You use for pumping and filling the 
glow lamps?


The capacitor welder You have will work well, it is not suitable for 
welding materials with high melting temperature like tungsten and 
molybdenum, but for steel, nickel and so it is very good!


> The problem with stainless steel wire is that it outgasses; I have a 
glow lamp with two stainless steel electrodes and it glows in a 
white-ish blue color, very strange. Will post a picture later this 
weekend if I don't forget.
the bluish color is not outgassing, outgassing is when the metal 
releives trapped air, oxygen, CO2, moisture and so into vacuum, You can 
avoid that by heating the wire into red for a minute or so just before 
sealing and pumping.. Each metal behaves differently in discharge - 
different voltages and so, so it could be because of that..



Dalibor

Dne 19.10.2012 7:29, jb-electronics napsal(a):

Hi guys,

thanks for your advice. I think the problem is the one Dalibor pointed 
out: with Dumet wire the sputtering is very high. Also, since I am 
using no noble gas (except for the less than 1 percent there is in 
ambient air), the cathodes are having a much harder time anyway. So 
for now I will not install these tubes in a permanent circuit since 
they would only last for a few hours.


I will wait for my needle valve (will be here any day now) and try 
with Neon (and some day with Argon, too, of course). The ignition 
voltage should be drastically lower, and the visibility should increase.


The problem with stainless steel wire is that it outgasses; I have a 
glow lamp with two stainless steel electrodes and it glows in a 
white-ish blue color, very strange. Will post a picture later this 
weekend if I don't forget.


Ah, by the way, I already have a small capacitor-based spot welder, 
and so far, for my purposes, it has served me well: 
http://www.robbe.de/welma-2000-punktschweissgeraet.html?___store=en


Jens


Keep up the good work !

If you need have some DXF files (vector format) on the digits you 
want, or a image of the whole set, in a raster format, throw in my 
direction. I'm in good with a guy that owns a steel cutting laser. 
4000W of CO2 goodness. He'll run small jobs for me for nothing, as 
long as I don't abuse it. That means pester him for work too often.


I still want that "1 - 12" "tri-quad" tube. 3 anodes x 4 cathode sets 
(of 3).

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[jb-electronics]

Hi Dalibor,

it is a Pirani gauge. A friend of mine gave me a two-stage rotary vane 
pump with flange terminal and a Pirani gauge that works fine down to 
10E-4 mbar. Will take a picture later. I will mount my flange needle 
valve when it gets here (a couple of days) and then I will take a lot of 
pictures for documentation anyway.


The capacitor welder You have will work well, it is not suitable for 
welding materials with high melting temperature like tungsten and 
molybdenum, but for steel, nickel and so it is very good!


The plier, however, is horrible. I will have to built one by myself; all 
I need for that is just some pieces of copper.




> The problem with stainless steel wire is that it outgasses; I have a 
glow lamp with two stainless steel electrodes and it glows in a 
white-ish blue color, very strange. Will post a picture later this 
weekend if I don't forget.
the bluish color is not outgassing, outgassing is when the metal 
releives trapped air, oxygen, CO2, moisture and so into vacuum, You 
can avoid that by heating the wire into red for a minute or so just 
before sealing and pumping.. Each metal behaves differently in 
discharge - different voltages and so, so it could be because of that..


I should have been more precise: The glow lamp in question heated up 
during my first test to about 100°C. At that temperature, the stainless 
steel electrodes were rather hot, too. I just thought that at this point 
the outgassing began because afterwards the color had shifted from 
violet (air) to some white-ish blue (air + outgassing). So the 
outgassing has changed the atmosphere inside my tube.


I don't think that different electrode materials produce different 
colors, the physics are the same, the color only depends on the gas you 
use. The ignition voltage was the same (550V DC).


But maybe it is also an optical illusion because the stainless steel 
electrodes are much more reflective than Dumet wire and so a lot of 
ambient light gets reflected off of them creating the illusion of a 
white color component.


Jens




Dalibor

Dne 19.10.2012 7:29, jb-electronics napsal(a):

Hi guys,

thanks for your advice. I think the problem is the one Dalibor 
pointed out: with Dumet wire the sputtering is very high. Also, since 
I am using no noble gas (except for the less than 1 percent there is 
in ambient air), the cathodes are having a much harder time anyway. 
So for now I will not install these tubes in a permanent circuit 
since they would only last for a few hours.


I will wait for my needle valve (will be here any day now) and try 
with Neon (and some day with Argon, too, of course). The ignition 
voltage should be drastically lower, and the visibility should increase.


The problem with stainless steel wire is that it outgasses; I have a 
glow lamp with two stainless steel electrodes and it glows in a 
white-ish blue color, very strange. Will post a picture later this 
weekend if I don't forget.


Ah, by the way, I already have a small capacitor-based spot welder, 
and so far, for my purposes, it has served me well: 
http://www.robbe.de/welma-2000-punktschweissgeraet.html?___store=en


Jens


Keep up the good work !

If you need have some DXF files (vector format) on the digits you 
want, or a image of the whole set, in a raster format, throw in my 
direction. I'm in good with a guy that owns a steel cutting laser. 
4000W of CO2 goodness. He'll run small jobs for me for nothing, as 
long as I don't abuse it. That means pester him for work too often.


I still want that "1 - 12" "tri-quad" tube. 3 anodes x 4 cathode 
sets (of 3).

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[jb-electronics]

Hi again,

here is a picture of my "lab" / desk. I do not have a separate room for 
my tube making, so I have to clean off the desk every time I need to 
work for the university. It does not take much time, and so it is 
actually an advantage because it forces me to keep my lab tidy.


http://www.jb-electronics.de/tmp/lab.jpg

See the t-connector? This will be replaced by a connector with an 
additional outlet (so 4 in total) for my needle valve.


I have been trying to build two colon tubes today, with some minor 
success. Will post pictures tomorrow.


Jens



Hello!

By the way, how do You measure the pressure in the system? You 
mentioned the glow lamp is filled on 15mBar...


Could You send a photo of the system You use for pumping and filling 
the glow lamps?


The capacitor welder You have will work well, it is not suitable for 
welding materials with high melting temperature like tungsten and 
molybdenum, but for steel, nickel and so it is very good!


> The problem with stainless steel wire is that it outgasses; I have a 
glow lamp with two stainless steel electrodes and it glows in a 
white-ish blue color, very strange. Will post a picture later this 
weekend if I don't forget.
the bluish color is not outgassing, outgassing is when the metal 
releives trapped air, oxygen, CO2, moisture and so into vacuum, You 
can avoid that by heating the wire into red for a minute or so just 
before sealing and pumping.. Each metal behaves differently in 
discharge - different voltages and so, so it could be because of that..



Dalibor

Dne 19.10.2012 7:29, jb-electronics napsal(a):

Hi guys,

thanks for your advice. I think the problem is the one Dalibor 
pointed out: with Dumet wire the sputtering is very high. Also, since 
I am using no noble gas (except for the less than 1 percent there is 
in ambient air), the cathodes are having a much harder time anyway. 
So for now I will not install these tubes in a permanent circuit 
since they would only last for a few hours.


I will wait for my needle valve (will be here any day now) and try 
with Neon (and some day with Argon, too, of course). The ignition 
voltage should be drastically lower, and the visibility should increase.


The problem with stainless steel wire is that it outgasses; I have a 
glow lamp with two stainless steel electrodes and it glows in a 
white-ish blue color, very strange. Will post a picture later this 
weekend if I don't forget.


Ah, by the way, I already have a small capacitor-based spot welder, 
and so far, for my purposes, it has served me well: 
http://www.robbe.de/welma-2000-punktschweissgeraet.html?___store=en


Jens


Keep up the good work !

If you need have some DXF files (vector format) on the digits you 
want, or a image of the whole set, in a raster format, throw in my 
direction. I'm in good with a guy that owns a steel cutting laser. 
4000W of CO2 goodness. He'll run small jobs for me for nothing, as 
long as I don't abuse it. That means pester him for work too often.


I still want that "1 - 12" "tri-quad" tube. 3 anodes x 4 cathode 
sets (of 3).

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[jb-electronics]

Hi,

here are the pictures of one of the colon tubes (as always, air at 15mbar):

http://www.jb-electronics.de/tmp/gl-ls-8_1.jpg
http://www.jb-electronics.de/tmp/gl-ls-8_2.jpg

Sadly, the upper dot does not always light up. It was a silly idea to 
parallel the two cathodes, next time I will have the two dots wired 
seperately.


Jens


Hi again,

here is a picture of my "lab" / desk. I do not have a separate room 
for my tube making, so I have to clean off the desk every time I need 
to work for the university. It does not take much time, and so it is 
actually an advantage because it forces me to keep my lab tidy.


http://www.jb-electronics.de/tmp/lab.jpg

See the t-connector? This will be replaced by a connector with an 
additional outlet (so 4 in total) for my needle valve.


I have been trying to build two colon tubes today, with some minor 
success. Will post pictures tomorrow.


Jens



Hello!

By the way, how do You measure the pressure in the system? You 
mentioned the glow lamp is filled on 15mBar...


Could You send a photo of the system You use for pumping and filling 
the glow lamps?


The capacitor welder You have will work well, it is not suitable for 
welding materials with high melting temperature like tungsten and 
molybdenum, but for steel, nickel and so it is very good!


> The problem with stainless steel wire is that it outgasses; I have 
a glow lamp with two stainless steel electrodes and it glows in a 
white-ish blue color, very strange. Will post a picture later this 
weekend if I don't forget.
the bluish color is not outgassing, outgassing is when the metal 
releives trapped air, oxygen, CO2, moisture and so into vacuum, You 
can avoid that by heating the wire into red for a minute or so just 
before sealing and pumping.. Each metal behaves differently in 
discharge - different voltages and so, so it could be because of that..



Dalibor

Dne 19.10.2012 7:29, jb-electronics napsal(a):

Hi guys,

thanks for your advice. I think the problem is the one Dalibor 
pointed out: with Dumet wire the sputtering is very high. Also, 
since I am using no noble gas (except for the less than 1 percent 
there is in ambient air), the cathodes are having a much harder time 
anyway. So for now I will not install these tubes in a permanent 
circuit since they would only last for a few hours.


I will wait for my needle valve (will be here any day now) and try 
with Neon (and some day with Argon, too, of course). The ignition 
voltage should be drastically lower, and the visibility should 
increase.


The problem with stainless steel wire is that it outgasses; I have a 
glow lamp with two stainless steel electrodes and it glows in a 
white-ish blue color, very strange. Will post a picture later this 
weekend if I don't forget.


Ah, by the way, I already have a small capacitor-based spot welder, 
and so far, for my purposes, it has served me well: 
http://www.robbe.de/welma-2000-punktschweissgeraet.html?___store=en


Jens


Keep up the good work !

If you need have some DXF files (vector format) on the digits you 
want, or a image of the whole set, in a raster format, throw in my 
direction. I'm in good with a guy that owns a steel cutting laser. 
4000W of CO2 goodness. He'll run small jobs for me for nothing, as 
long as I don't abuse it. That means pester him for work too often.


I still want that "1 - 12" "tri-quad" tube. 3 anodes x 4 cathode 
sets (of 3).

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[jb-electronics]

Daniil,

wow, that looks really advanced! Not the kind of cheap tinkering I do 
;-) Can't wait to see your first Nixie tubes!


Jens


Awesome work Jens! :)

I'm also joining nixie creation race. :)

Today  first goal is achieved -simple incandescent light bulb.
Things done -
Glass to metal seal - Kovar to 7052 to Uranium glass to 7740
Hand glassblowing.
Evacuation process.

Pic:

http://www.flickr.com/photos/8838161@N02/8120086511/in/set-72157631845560157/
http://www.flickr.com/photos/8838161@N02/8120088838/in/set-72157631845560157/
http://www.flickr.com/photos/8838161@N02/8120077455/in/set-72157631845560157/
http://www.flickr.com/photos/8838161@N02/8120091348/in/set-72157631845560157/

Daniil.
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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[AndrakondrA (Daniil)]

Jens,

No no it's just looks alike, I'm totally novice.. learning everything by 
myself. You can ask Dalibor :)
After trying to build home lab, and almost a year of seeking after normal 
vacuum pump for reasonable money, closed deal to work in professional glass 
workshop, so the machines are not mine (and it's totally fake impression). 
:)
 

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[John Rehwinkel]

> I'm also joining nixie creation race. :)
> 
> Today  first goal is achieved -simple incandescent light bulb.
> Things done -
> Glass to metal seal - Kovar to 7052 to Uranium glass to 7740
> Hand glassblowing.
> Evacuation process.

Nice job, Daniil.  I like the looks of those stems.  Congratulations on first 
light!
If it burns out, you can hook it up to high voltage and run it as a glow lamp!
Looks like it's continuously pumped, which is great for experimentation.  Are
you considering gettering or gas fill for sealed-off ones?

- John

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[jb-electronics]

Hi Daniil,

I don't think it is too important who the tools belong to as long as you 
can use them. It is a fascinating opportunity for you to acquire real 
glassblowing skills.


I am so busy at the moment with university stuff that I cannot focus too 
much on Nixie tube making... Anyway, my next investment is going to be 
an gas-oxygen handheld torch so that I can also work Pyrex glass (will 
give it a try I guess) as well as soda lime. It is an investment I will 
only have to do once, so it is definetely worth it.


Another plan is to study the annealing and tempering properties of soda 
lime glass. I know that most hobbyist tube makers do not use this kind 
of glass (for good reasons), but then again it is so easy to create 
vacuum tight seals. Also, I have some lead glass tube stems lying around 
here and these only fuse to soda lime. So I will try to build a 
preheating oven that I can use to reheat glass and glass/metal parts and 
then join them. I will either use an infrared torch or a hot air fan for 
that. I will also make some horrible pinch seal and hold it in the hot 
air for some time and analyse the reduction of the tensions inside the 
glass.


So much for my plans. What is your next step, Daniil?

Jens


Jens,

No no it's just looks alike, I'm totally novice.. learning everything 
by myself. You can ask Dalibor :)
After trying to build home lab, and almost a year of seeking after 
normal vacuum pump for reasonable money, closed deal to work in 
professional glass workshop, so the machines are not mine (and it's 
totally fake impression). :)



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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[John Rehwinkel]

> Somebody might be interested in this, i decided to post it here because i 
> didnt want to start a new topic. 
> http://www.elektroda.pl/rtvforum/topic830658.html

That's our own Aleksander Zawada - he does some beautiful work making vacuum 
tubes and nixies.  I didn't even know he was working on a seven
segment display!

- John

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Re: [neonixie-l] Re: My first two-digit Nixie tube!

[AndrakondrA (Daniil)]

>John
Congratulations on first light!  
Are you considering gettering or gas fill for sealed-off ones? 

Thank you very much!
Have a problem, for now at least, to get both of them. When I get them I 
will try all options.

>Jens 
I am so busy at the moment with university stuff that I cannot focus too 
much on Nixie tube making...

:) Same thing exactly! :(

>Jens 
What is your next step, Daniil? 


Before I move to make nixies I want to play with incandescent lamps for 
some time.
And try to make something like this (pic). 

Dan.



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