I have mercury dispenser, used in fluorescent lamp. I think that it's
safety. I have also a lot of small Ti-Hg "drugs" for plasma displays,
but I'm not able to use it. I don't know how to use it. I used liquid
mercury, but I hate this method:/.
I can't to tell that Ron is right.
If you want low voltage supply (below 180V) and long life for nixie,
you should have the atmospere Ar, Ne and Hg.
I have old polish documets about AC and DC-PDP (plasma displays) and
there is a lot of informations about good mixtures.
I haven't glass lathe so far, thats why I can't prepare so beautifull
glass wafers as Ron:(
Best regards
Alek
W dniu 2012-06-26 15:23, jb-electronics pisze:
Hi,
but where do you get the mercury dispenser? Do you have a source? I am
just curious because I searched for it some months ago and did not
find any.
But Ron is probably right: Many Nixie tubes neither have getters nor
mercury in there, so the bakeout really is the crucial part.
Jens
Mercury + stainless steel cathode are the best combination for the
longest lifetime of the tube. Another possibility is to use
molybdenum cathode, but it is not easy to obtain (0.1mm shim), I dont
know how to etch it, it is quite brittle to work with and difficult
to spotweld to lead-in-wires. I will fill mercury by mercury
dispenser - metal compound, activated by heating, this procedure
relieve the mercury.. Similar to flashing the getters,
Dalibor
2012/6/26 glasslinger <[email protected] <mailto:[email protected]>>
Good reason for not using mercury in your tubes! Pick a low
sputter cathode metal so it isn't necessary. Also, getters are
not really necessary in tubes operating at nixie tube pressures.
Just do a good bakeout and you will be fine.
ron
On Tuesday, June 26, 2012 5:09:26 AM UTC-7, Dalibor wrote:
Important info! Thanks for that!
Dalibor
2012/6/26 Alek onet <[email protected]
<mailto:[email protected]>>
Flashes getters aren't good for nixie tubes because
barium mirror exchange mercury vapours to another gases.
That's why.
Best regards
Alek
W dniu 2012-06-26 09:51, Dalibor Farný pisze:
Thats exactly what I mean, I will use flashed getter for
testing - I will disassemble some old TV tube as Ron
suggested. But I want to use right getter later..
Do You have any info about your progress on your site?
Dalibor
2012/6/26 jb-electronics <[email protected]
<mailto:[email protected]>>
Hi folks,
the only tube with a flashed getter I know of is the
XN-1:
http://www.tube-tester.com/sites/nixie/data/XN1/XN1.htm
To be honest: I will not use getters at the moment.
There is so much glasswork to figure out for me,
that is the part that I will focus on in the next
months. :-)
Jens
Hi Dylan,
flashed getters are not used in nixies (I havent
seen it at least), just some VFD tube use flashed
getters. Flashed getters leave a coating on a glass
envelope of the tube - we don't want that. I think
that kind of getter needs only initial activation
by heat which could be done by induction heating as
well as in the case of flashed getters. Look to
IN-14 nixie, there is exactly the same pellet.
The only matter to solve will be attaching the
pellet to a wire, but I think that will be possible
to do by spot welding - inspired by IN-14.
Thanks,
Dalibor
2012/6/26 dylan roelofs <[email protected]
<mailto:[email protected]>>
Hey Dalibor and others-
I don't feel that these are the right
getters for nixie tubes.
The literature lists them as thermally
active- they only absorb if you put them
somewhere hot.
Many styles of getters are made this way;
most tubes do run quite hot, beacuse of the
filaments..
There isn't anywhere in a nixie tube that is
constantly 100C-200C. (That's part of the magic
of nixies, of course)
You really want some flashed barium getters;
they absorb gasses at any temperature.
-Dylan
www.dylankehderoelofs.com
<http://www.dylankehderoelofs.com>
On Monday, June 25, 2012 11:21:36 AM UTC-7,
Dalibor wrote:
Hello guys,
I've got an offer on getters, tech info
attached.. the price is approx. 5pcs/1 eur.
Is anyone interested in it? I will place an
order in several weeks, I may send some
pieces sealed in argon filled tube..
--
Dalibor Farny
http://dalibor.farny.cz
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