[neonixie-l] Buying Nixies from outside the UK

2013-02-26 Thread electrofish
Hello
as a relatively new starter with nixie etc I want to buy some IN14s and 
dekatrons.
I am based in the UK and have been looking at UK suppliers with only two 
that I can find.
One is out of stock.
I have found some abroad in another EU country, which are much cheaper, but 
I'm not sure on two things.
1.  Do they survive well travelling in the mail?
2.  Are there any import restrictions to the UK due to the content ie neon 
etc?

Sorry if they seem stupid questions.
Regards
John

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[neonixie-l] Colophony

2013-02-26 Thread Quixotic Nixotic
Liquid flux seems expensive to buy and it comes in tiddly bottles.

I bought a solid tin of colophony, eg ebay item 121041198430, dissolved it in 
Isopropyl alcohol and it seems to make an excellent flux. Lots and lots of it 
can be made very cheaply.

Can the experts tell me if this is a really bad idea or not? I do wash the 
board off afterwards, but with SMT chips I suppose it might leave some kind of 
residue under the IC.

John S

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[neonixie-l] Re: Buying Nixies from outside the UK

2013-02-26 Thread Jon
Hi John,
 
As long as the sender packs them adequately to prevent the glass envelopes 
breaking, you shouldn't have any problems getting them shipped into the UK. 
Take a look on eBay to check the prices that you're being quoted are 
reasonable. There are no import restrictions to the UK which have ever 
affected me. However, if the package is given a customs value in excess of 
£18 there's a chance Royal Mail will spot it and charge you 20% VAT + their 
iniquitous £8 handling fee.
 
Nothing to do with shipping, but as a general principle with dekatrons do 
be aware that the exotic high speed ones have a significant dud rate due 
to loss of their magic fill gases in storage. Stick to nice slow speed neon 
ones and you should be fine.
 
Jon.

On Tuesday, February 26, 2013 11:59:27 AM UTC, electrofish wrote:

 Hello
 as a relatively new starter with nixie etc I want to buy some IN14s and 
 dekatrons.
 I am based in the UK and have been looking at UK suppliers with only two 
 that I can find.
 One is out of stock.
 I have found some abroad in another EU country, which are much cheaper, 
 but I'm not sure on two things.
 1.  Do they survive well travelling in the mail?
 2.  Are there any import restrictions to the UK due to the content ie neon 
 etc?

 Sorry if they seem stupid questions.
 Regards
 John


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[neonixie-l] For all tube self-makers

2013-02-26 Thread Dieter Waechter

I have found that at Ebay:

http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItemitem=251235692223

Maybe interesting. Also see the list he wrote for future offers.
Dieter

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[neonixie-l] Re: OG8 dekatrons

2013-02-26 Thread dr pepper
I've played with og3's, I thought they were part argon, I might be
wrong though.
The only drawback for me was that they need 3 microcontroller pins, or
some circuitry to provide the 3 phases to drive them.
The brightness of the glow is also a bit less than a neon tube.
I had trouble getting the reset to 0 working, and opted for 3 neurons
detect on 0 approach instead, the tube is a seconds pendulum and mode
function indicator for one of my clock projects.

On 21 Feb, 20:28, threeneurons threeneur...@yahoo.com wrote:
 Personally, I'm leery of all high speeds. I still don't know if there's a
 consensus on what the gas mix is in those purple jobs. I'm leaning towards
 hydrogen. If so, it'll react with the innards, and eventually, no joy.

 I haven't played with that tube, but I have looked at its datasheet, and
 its specs. Its similar to the OG-3, much in the same way that a GC10/4B is
 related to a GC10B, and a OG-9 is to an OG-4. In the OG-3, OG-4, GC10B, and
 6482 only one cathode is brought out separately, while the others are
 ganged together. In the OG-8, OG-9, GC10/4B,  6802, a few of the other
 cathodes are also brought out separately, using up the remainder of the
 octal base pins.

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[neonixie-l] Re: OG8 dekatrons

2013-02-26 Thread threeneurons
| I've played with og3's, I thought they were part argon, I might be wrong 
though.
| The brightness of the glow is also a bit less than a neon tube. 

There are other gases that glow blue/violet. The only reason, I'm thinking 
its not argon, is that argon is a larger atom than neon. The color does 
correspond to energy transitions, with violet having the most energy, and 
red having the lowest. Orange is just a tad more energetic than red. How 
that translates to ionization speed, I have no clue. I tried looking at the 
emissions of these tubes with a cheap spectrometer, but still got multiple 
lines. It really needs to be done with a good quality calibrated 
spectrometer, and in absolute darkness. Still, a single element will have 
multiple lines, and it still may be a mix, of several gasses. I've also 
heard helium tossed around. That also glows blue, and has the bad habit of 
being able to leak right thru glass. That was a problem we had with HeNe 
lasers.

So other than the high dud rates of these tubes, the glow brightness, or 
lack of it, is a second strike against these tubes.

The 3rd guide doesn't really bother me. Especially, when stepped by a uC. 
That means 40 rods instead of 30, for finer resolution. That's why I like 
using Japanese DK23 dekatrons, with my do-hickie circuit. 40 rods, and it 
glows orange !

Nice to hear someone else having a dekatron pendulum, as part of their 
nixie clock. Jason Harper started it a long time ago, and I've used it on 4 
of my own, but I haven't made a new clock in ages.

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[neonixie-l] Re: Buying Nixies from outside the UK

2013-02-26 Thread Terry Kennedy
On Feb 26, 2:36 pm, Jon dekat...@nomotron.com wrote:
 As long as the sender packs them adequately to prevent the glass envelopes
 breaking, you shouldn't have any problems getting them shipped into the UK.

Not in the UK, but I've been ordering stuff from former Soviet bloc
countries for delivery in the US and only had one problem:
http://www.tmk.com/blog/6F5S8816-s.jpg

And that one was due to poor packaging, and the seller and I reached a
mutually satisfactory settlement. I must have at least 5000 assorted
displays here (Nixie, VFD, esoterica) and never had one damaged in
shipment, other than the clock shown above. The sellers seem to do a
good job of packing the tubes for shipment, using a variety of methods
(anything from bubble wrap to decades-old newspapers / cardboard.
There are some scammers out there, though - look to see how long the
seller has been on eBay and how much feedback (as a seller) they have.

It's a good idea to confirm that the quoted shipping cost is at least
somewhat related to the actual post cost. Most countries have English-
language versions of their web sites where you can calculate postage.
The only one that I know of that's way off is Moldova - their English
site quotes a much lower rate than the native-language version for
some reason.

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