I would be afraid that when You want to change anything on your metal
flange system, You have to buy another parts, have to search for them etc..
On glass system You can change everything yourself, it is cheap. And once
the connection in glass is made, You can be sure it is vacuum tight (it is
visi
Hi Dailbor,
you mention a key point: I tried a setup with ordinary refrigeration
tech hoses before (just like the ones on your website) and I also used
transparent silicone hoses. The result was: It was not tight. There were
leaks all over the place.
That is why I want to get rid of this pro
Making a glass vacuum system (filling manifold) is quite easy with
glassblowing torch and blowhose. I tried several T-joints and when I was
satisfied with function (look could be better) I started to make a glass
system. I am not decided how to connect it to vacuum pump, I realised, that
silicone h
On 6/26/2012 2:25 PM, Jonathan wrote:
Hi all,
Anyway, I am using the blanking feature of the 74141 for the first time. It
seems that some of them don't blank as well as others and to get them all to
blank I have to dial the anode voltage down or lower tje pwm duty cycle which
prevents max br
Hi,
for easier maintenance and also due to my dissatisfactory glassworking
skills I will use a standard vacuum flange system. There is a very good
needle valve I used once in the university that I would love to have for
my setup. It allows you to let in the gas very (!) smoothly so almost
any
Hi, for what do You need needle valve? And how much does that costs? I use
common glass high vacuum valves..
I am going to build an oven according to:
http://www.teralab.co.uk/Glass_Blowing/Annealing_Oven/Annealing_Oven_Page1.htm
Now I use a box with vermiculite ($10), it works surprisingly well,
Hi all,
I'm making my first clock that has to be set by the user instead of self
setting. And the leading digit needsl to be blanked, as the woman it is for
doesn't want to see the zero.
Anyway, I am using the blanking feature of the 74141 for the first time. It
seems that some of them don't
Hi Dalibor,
yes, that is my number 2 item on the wish list, the first one is the
needle valve.
What do you do for annealing? Have you built yourself an annealing oven?
Jens
I forgot, I bought small glassblowing torch, oxy-gas, it is huge
difference compared to hardware torch. If You have so
I forgot, I bought small glassblowing torch, oxy-gas, it is huge difference
compared to hardware torch. If You have some spare money, go for it.. You
can set the flame to heat just a small area (5mm diameter) and so...
Dalibor
2012/6/26 jb-electronics
> Hi,
>
> Do You have any info about your
Hi,
thats the same with me, I also rather works with glass than write on web
;-) I am making exactly what You wrote - simple glow lamps, filled by
argon. I seal them and run them as long as possible. I make one with
pressure just enough for the glow to cover all the cathode evenly,
stainless steel
Hi,
Do You have any info about your progress on your site?
I am currently training my glasswork "skills", which is really a lot of
work, so this eats up all my spare time at the moment. I will have more
time in the next months, so for me it will take some more time, sadly.
Hence, there is n
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 lo
On Tuesday, 26 June 2012 14:15:00 UTC+1, glasslinger wrote:
>
> 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
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
Mer
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
wi
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
> 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
Yes, right, but it works for tubes like B-5025 series, since they are
mercury-free and the getter mirror is on the back of the tube.
Dieter
Am 26.06.2012 12:42, schrieb Alek onet:
Flashes getters aren't good for nixie tubes because barium mirror
exchange mercury vapours to another gases. That's
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 Ro
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
> Hi folks,
>
> the only tube with a flashed
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
You will find the flashed getters on the back of the tubes, but not on
all. Only SH4, SH5 do have these (The "SH" designation are my own
designations and stand for "shape", I need that for my tube matching
system) there are 7 known shapes of the B-5025 tubes.
Dieter
Am 26.06.2012 09:16, schri
Hi Dieter,
I don't see any flashed metal in B-5025, just some stripes of metal on the
top. What I understand under term "flashing getter":
"Flash gettering means, chemically active, comparatively volatile
metals-mostly metals of the alkaline earth group are evaporated by heating
their supports at
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