[neonixie-l] Re: New to Group Bad dog designs

2014-02-14 Thread Alex

Hi Paul,

I have seen a few of your clocks on eBay, I do like the test equip 
sawn-offs - I have a Venner counter here that would go nicely like this but 
it is such a nice bit of kit as it is...

Nice to see that there are a few of us in the south of the UK, guess we 
will all be battering down the hatches today if the news reports are 
anything to go by - just hope your clocks have battery backups ;-)

- Ax

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Re: [neonixie-l] How exactly does mercury increase Nixie lifetime?

2014-02-14 Thread NoCampersFluffy
Hello
From my chemistry days I think there is a complementary explanation to the 
coating of cathodes with Mercury and for mercury vapor inside the Nixie.  
It takes less energy to energize mercury atoms than energizing the atoms in 
the penning mix (Neon and Argon).  This principle also led to the 
development of the fluorescent tube.  In this way the mercury atoms form 
part of the thermionic emission releasing electrons with UV wavelenghths 
which collide with and ionize the noble gas atoms inside the tube to form 
the resulting plasma by the process of impact ionization.  As a result of 
avalanche ionization the ionized gas increases its conductivity rapidly and 
a current is able to flow.  Mercury also has the benefit of stabilizing the 
ionization voltage as well as increasing the life of the cathode.

On Thursday, 13 February 2014 19:32:10 UTC+11, Dalibor wrote:

 Hi, the mercury adheres to cathode surface and because its molecule is 
 heavy, it is less likely to be relieved from the cathode by electrons 
 bombarding the cathode (compared to relatively light molecules of Fe, 
 Ni, Cr - stainless steel).. The lifetime of mercury doped nixies is 
 200.000 hrs, tubes without mercury have 5.000 hrs (MTBF value from 
 datasheets). This is a theory.. The lifetime otself depends on many 
 other parametrs, eg. size of the hole in anode grid or shape of the 
 ceramic insulators between numbers.. 

 My experimental tube without mercury is at ~1500 hrs, no signs of 
 metal deposit on glass, some deposit of shiny metal on ceramic 
 insulators - the resistivity is not measurable yet (300 Mohms). 
 photo: http://tinyurl.com/n5o5bau 

 Dalibor 

 2014-02-13 8:44 GMT+01:00 Kevin Keith krfk...@gmail.com javascript:: 
  I've seen references and claims to this fact, but never an explanation 
 of the exact mechanism? So, with that said, how *does* mercury actually 
 reduce cathode poisoning/sputtering damage? Are there any potential 
 alternatives? Would something like gallium work? 
  
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 phone: +420 724 321 571 
 http://www.daliborfarny.com 
 blog: http://dalibor.farny.cz 


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Re: [neonixie-l] Cathode Construction: material? thickness?

2014-02-14 Thread AlexTsekenis
If you consider/allow the IN-13 bargraph to be a nixie tube, it uses a 
molybdenum cathode and nickel anode.

Alex

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[neonixie-l] Re: Micro Nixie Controller board

2014-02-14 Thread M.J.Sangster
Ron,

I have the board design complete and I am currently testing the software - 
I like to make sure the software gets a complete test, which takes a little 
time.

Next week I will launch a Kick Start program so I can build a decent 
quantity of boards at a low price.

I'll keep you informed.

- Michael Sangster

I have a more up to date thread on tube clock database 
(http://www.tubeclockdb.com/forum/Builders-Forum/5153-Tiny-universal-clock-PCB.html).

On Thursday, February 13, 2014 5:43:51 PM UTC-6, blkadder wrote:

 Hey Michael,
 I was sniffing around the board, and remembered I starred this project.  I 
 know this may be a zombie thread, but I am curious if you have made any 
 progress with this one.  I have an Ardruinx that I would love to add a GPS 
 function to the clock.

 Thanks for any updates.

 Ron

 On Tuesday, May 21, 2013 4:06:53 PM UTC-4, M.J.Sangster wrote:

 I'm planning on building and possibly selling a micro nixie controller 
 board. The idea is to create the smallest possible Nixie controller board 
 that can drive 6 Nixies (3x2 multiplexing).

 I am posting this to see if the feature set of the board makes sense, or 
 if I am missing anything.

 Here is a link to preliminary information:

 Micro Nixie Controller 
 Boardhttp://www.coldwarcreations.com/microboard/microboard.html

 Thanks!




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[neonixie-l] Re: New to Group Bad dog designs

2014-02-14 Thread Nick
Just started hammering down here - the cellar under my workshop now has 4ft 
of water in it :( SWMBO is out buying bits to get our pumps going again...

Weird thing is that those places around us that normally flood, i.e. flood 
in most normal winters, have escaped this time for some reason. We live on 
top of one of the highest hills in the Weald - lifted the concrete slab 
over the well at the weekend - the water was about 15cm/6in from the top, 
i.e. the water table at the top of the hill is only 6 inches down... No 
where left for the rain to go... no wonder the rivers are overflowing...

Nick

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Re: [neonixie-l] Re: New to Group Bad dog designs

2014-02-14 Thread Nicholas Stock
Stay safe Nick and to all the others affected in my old homelandwe
could do with some of that water in CA!

Nick


On Fri, Feb 14, 2014 at 7:10 AM, Nick n...@desmith.net wrote:

 Just started hammering down here - the cellar under my workshop now has
 4ft of water in it :( SWMBO is out buying bits to get our pumps going
 again...

 Weird thing is that those places around us that normally flood, i.e. flood
 in most normal winters, have escaped this time for some reason. We live on
 top of one of the highest hills in the Weald - lifted the concrete slab
 over the well at the weekend - the water was about 15cm/6in from the top,
 i.e. the water table at the top of the hill is only 6 inches down... No
 where left for the rain to go... no wonder the rivers are overflowing...

 Nick

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Re: [neonixie-l] Re: Micro Nixie Controller board

2014-02-14 Thread M.J.Sangster
Eric,

The thread started on the tube clock database forum that I put on my 
previous post.

I have a link to more info on the board here: 
www.coldwarcreations.com/microboard/microboard.html This sums up the board, 
and I will post more info on the site next week.

I will post the Kick start info on this forum and the tube clock database 
forum.

- Michael

On Friday, February 14, 2014 9:00:38 AM UTC-6, Tidak Ada wrote:

  Hi Michael,
  
 Please can you give me more information on that board? Especially a link 
 to the thread where it started, but other interesting threads and other 
 information is of course also welcome.
  
 Do you announce the publication on Kick-Start here on this forum?
  
 eric

  --
 *From:* neoni...@googlegroups.com javascript: [mailto:
 neoni...@googlegroups.com javascript:] *On Behalf Of *M.J.Sangster
 *Sent:* vrijdag 14 februari 2014 15:49
 *To:* neoni...@googlegroups.com javascript:
 *Subject:* [neonixie-l] Re: Micro Nixie Controller board

  Ron, 

 I have the board design complete and I am currently testing the software - 
 I like to make sure the software gets a complete test, which takes a little 
 time.

 Next week I will launch a Kick Start program so I can build a decent 
 quantity of boards at a low price.

 I'll keep you informed.

 - Michael Sangster

 I have a more up to date thread on tube clock database (
 http://www.tubeclockdb.com/forum/Builders-Forum/5153-Tiny-universal-clock-PCB.html
 ).

 On Thursday, February 13, 2014 5:43:51 PM UTC-6, blkadder wrote: 

 Hey Michael,
 I was sniffing around the board, and remembered I starred this project.  
 I know this may be a zombie thread, but I am curious if you have made any 
 progress with this one.  I have an Ardruinx that I would love to add a GPS 
 function to the clock.

 Thanks for any updates.

 Ron

 On Tuesday, May 21, 2013 4:06:53 PM UTC-4, M.J.Sangster wrote: 

 I'm planning on building and possibly selling a micro nixie controller 
 board. The idea is to create the smallest possible Nixie controller board 
 that can drive 6 Nixies (3x2 multiplexing). 

 I am posting this to see if the feature set of the board makes sense, or 
 if I am missing anything.

 Here is a link to preliminary information:

 Micro Nixie Controller 
 Boardhttp://www.coldwarcreations.com/microboard/microboard.html

 Thanks!


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[neonixie-l] Good benchtop multimeter

2014-02-14 Thread Nicholas Stock
Hi Folks, a little off-topic (but perhaps not)...can anyone recommend a
good, reasonably priced bench top multimeter for a hobbyist who's trying to
understand a little bit more about electronics (me..). I have a good
handheld but am looking for something a little more permanent for my
workshop and thought I'd ask some of the pro's on this forum

Thanks in advance,

Nick

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Re: [neonixie-l] Cathode Construction: material? thickness?

2014-02-14 Thread Kevin Keith


On Friday, February 14, 2014 3:53:20 AM UTC-7, AlexTsekenis wrote:

 If you consider/allow the IN-13 bargraph to be a nixie tube, it uses a 
 molybdenum cathode and nickel anode.

 Alex

Interesting! Does the IN-13 contain mercury? 

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[neonixie-l] Re: Good benchtop multimeter

2014-02-14 Thread Nick
I'm a huge fan of the Agilent 34401A - now superceded but still the best 
selling bench DMM ever. The replacement 34461A new is less than a new 344301A 
but the older one is often available on auction sites.

Probably overkill but undoubtedly the best there is :)

Cheers

Nick


On Friday, 14 February 2014 16:07:11 UTC, Pramanicin  wrote:
 Hi Folks, a little off-topic (but perhaps not)...can anyone recommend a good, 
 reasonably priced bench top multimeter for a hobbyist who's trying to 
 understand a little bit more about electronics (me..). I have a good handheld 
 but am looking for something a little more permanent for my workshop and 
 thought I'd ask some of the pro's on this forum
 
 
 
 Thanks in advance,
 
 
 Nick

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Re: [neonixie-l] Good benchtop multimeter

2014-02-14 Thread Christian Bjelle
There are a lot of HP 3478A available on ebay in varying condition at 
affordable prices. I was lucky to find one for $150 in Europe in great 
condition.

//c


14 feb 2014 kl. 17:07 skrev Nicholas Stock nickst...@gmail.com:

 Hi Folks, a little off-topic (but perhaps not)...can anyone recommend a good, 
 reasonably priced bench top multimeter for a hobbyist who's trying to 
 understand a little bit more about electronics (me..). I have a good handheld 
 but am looking for something a little more permanent for my workshop and 
 thought I'd ask some of the pro's on this forum
 
 Thanks in advance,
 
 Nick
 
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Re: [neonixie-l] Good benchtop multimeter

2014-02-14 Thread Instrument Resources of America
 The 3478A is a very good meter as are most of the HP's and same for 
Fluke. The Fluke 8840 series is quite good, and should be affordable on 
Ebay as well. BUT, as with all things on Ebay either buy one that is 
warrantied to be in good 'working' condition, OR is at least 
returnable to the seller.   Ira.




On 2/14/2014 11:49 AM, Christian Bjelle wrote:
There are a lot of HP 3478A available on ebay in varying condition at 
affordable prices. I was lucky to find one for $150 in Europe in great 
condition.


//c


14 feb 2014 kl. 17:07 skrev Nicholas Stock nickst...@gmail.com 
mailto:nickst...@gmail.com:


Hi Folks, a little off-topic (but perhaps not)...can anyone recommend 
a good, reasonably priced bench top multimeter for a hobbyist who's 
trying to understand a little bit more about electronics (me..). I 
have a good handheld but am looking for something a little more 
permanent for my workshop and thought I'd ask some of the pro's on 
this forum


Thanks in advance,

Nick

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attachment: IRACOSALES.vcf

Re: [neonixie-l] Re: Good benchtop multimeter

2014-02-14 Thread Instrument Resources of America
Yes the 34401A is an excellent meter, I have several here on different 
benches in our lab, and as you mention has been superseded. However it 
probably still sells for around four hundred bucks, give or take, on 
Ebay in WARRANTIED working condition, which may still be a bit much for 
some folks.   Ira.



On 2/14/2014 11:32 AM, Nick wrote:

I'm a huge fan of the Agilent 34401A - now superceded but still the best 
selling bench DMM ever. The replacement 34461A new is less than a new 344301A 
but the older one is often available on auction sites.

Probably overkill but undoubtedly the best there is :)

Cheers

Nick


On Friday, 14 February 2014 16:07:11 UTC, Pramanicin  wrote:

Hi Folks, a little off-topic (but perhaps not)...can anyone recommend a good, 
reasonably priced bench top multimeter for a hobbyist who's trying to 
understand a little bit more about electronics (me..). I have a good handheld 
but am looking for something a little more permanent for my workshop and 
thought I'd ask some of the pro's on this forum



Thanks in advance,


Nick


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attachment: IRACOSALES.vcf

Re: [neonixie-l] Cathode Construction: material? thickness?

2014-02-14 Thread Alex Tsekenis
Not to my knowledge for the two variants.
On 14 Feb 2014 17:32, Kevin Keith krfke...@gmail.com wrote:



 On Friday, February 14, 2014 3:53:20 AM UTC-7, AlexTsekenis wrote:

 If you consider/allow the IN-13 bargraph to be a nixie tube, it uses a
 molybdenum cathode and nickel anode.

 Alex

 Interesting! Does the IN-13 contain mercury?

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RE: [neonixie-l] Re: Source for Dekatrons?

2014-02-14 Thread Bill van Dijk
You can find sockets  for the A101 at: http://www.gstube.com/catalog/rsh30-0/ 

 

I got some from him a short while back. Note that the picture shows a metal 
clamp; he does not have them anymore.

 

Cheers, Bill van Dijk

 

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Mike Mitchell
Sent: Monday, February 10, 2014 7:41 PM
To: neonixie-l@googlegroups.com
Subject: [neonixie-l] Re: Source for Dekatrons?

 

Since I can't find sockets for the A101's I've been worried about how I was 
going to mount them to the chassis.
It looks like these will fill the bill:

http://media.digikey.com/pdf/Data%20Sheets/Richco%20Inc%20PDFs/SCH-1.pdf

They will cinch down on the base of the tube.  Since they are made of nylon 
they shouldn't cause any damage.
I don't know if they will release though.

On Sunday, February 9, 2014 6:37:22 PM UTC-5, Mike Mitchell wrote:

I'm thinking about building a clock using Dekatrons as the counting logic.

It looks like A101 dekatrons are fairly easy to find, but I cannot locate 
socket for them.

I'll probably use QS30-1 nixies as an alternate display.  They use B13B 
sockets, so a dekatron that also uses the B13B socket would be more visually 
appealing.

I'd like to find a small-height dekatron to match the QS30-1 profile, something 
like the Z504S, ZM1070, or 8433.

Does anyone have a good source for low-height selector dekatrons with a B13B 
base?

 

Each clock will need eight dekatrons, and I plan on building two clocks.

The finished product will have two rows of seven tubes, the first 6 in the top 
row nixies and the rest dekatrons.  The left-most top row will be a dekatron 
showing tenths of seconds.  Under each nixie tube will be the dekatron for that 
digit.

 

Thanks!

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Re: [neonixie-l] Re: Good benchtop multimeter

2014-02-14 Thread Dennis
The HP's and Flukes are all really good but I picked up a Techtronixs CDM250 
awhile back for a song and a dance. Nice meter. Look on the bay as there is 
plenty there of all types.





On Saturday, February 15, 2014 4:09 AM, Instrument Resources of America 
iracosa...@hughes.net wrote:
 
Yes the 34401A is an excellent meter, I have several here on different 
benches in our lab, and as you mention has been superseded. However it 
probably still sells for around four hundred bucks, give or take, on 
Ebay in WARRANTIED working condition, which may still be a bit much for 
some folks.   Ira.


On 2/14/2014 11:32 AM, Nick wrote:
 I'm a huge fan of the Agilent 34401A - now superceded but still the best 
 selling bench DMM ever. The replacement 34461A new is less than a new 344301A 
 but the older one is often available on auction sites.

 Probably overkill but undoubtedly the best there is :)

 Cheers

 Nick


 On Friday, 14 February 2014 16:07:11 UTC, Pramanicin  wrote:
 Hi Folks, a little off-topic (but perhaps not)...can anyone recommend a 
 good, reasonably priced bench top multimeter for a hobbyist who's trying to 
 understand a little bit more about electronics (me..). I have a good 
 handheld but am looking for something a little more permanent for my 
 workshop and thought I'd ask some of the pro's on this forum



 Thanks in advance,


 Nick

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