I have 24 pages of STC data for the /241 including driver circuits and
relay driving applications.
is that data wanted here? [I thought I put it at Yahoo but can't
access it to check.]
John K.
On 14 Sep, 17:48, Nick n...@desmith.net wrote:
I've uploaded the datasheet for the G10/241 (very very
Think of the tubes acting a bit like a zener diode. [Or old-time valve
regulators eg VR105 ]
Same principle as fluorescent light tubes too for that matter. [And the
reason for the Ballast]
John K.
- Original Message -
From: will ossumguyw...@gmail.com
Does the resistance of
Well, what about just switching it on/off? Or use an off-the-shelf mains
timer (- electronic or mechanical) ?
Or, there is home-automation equipment [X10 etc] that will allow you to
operate a mains-switch from various remotes.
http://en.wikipedia.org/wiki/X10_(industry_standard)
And, various
Dieter, try the tubecollectorsassociation (TCA) Yahoo Group too.
John K
- Original Message -
From: Dieter Waechter i...@nocrotec.com
do we have Japanese people here in the group?
I need some help for forwarding some Nixie tubes to me.
I will pay for the work of course.
Thanks
Dieter
Thanks. Was curious about the non-clock method and whether there is
something inherent in the process causing the prob.
John K
- Original Message -
From: will ossumguyw...@gmail.com
Also, forgot, my cycle program is very simple, the first tube cycles
really fast, every time the
or a 555. AND I hope he screams his guts out !! :-))
jk
- Original Message -
From: threeneurons threeneur...@yahoo.com
Here's a simple charge pump:
http://snipurl.com/23qbkk
only 4 parts. 2 10uf caps, and 2 1N4148 diodes. Output roughly -4V.
Oh, the input is a 5V squarewave,
Ball Grid Arrays don't have to be useless for home . If time isn't an issue
and money is or it is just some fun,,, [or it is only avail BGA etc] just
flip the pack and glue it down. Treat it like COB [chip-on-board] and wire
each dot with solder-thru enammeled copper wire. Mount on vector or
But, the 1% resistors make the current measurement easier.
John K.
- Original Message -
On 3/9/11 8:47 AM, Jarek wrote:
I purposely bought 1% .5W resistors, and did all the testing with the
'8' digit.
There's precision, and then there's precision. Nixie tubes are in the 5%
I have trouble picturing the circuit arrangement; BUT 11V across 5 ohms is
2 Amps which is 20 Watts !! Does the resistor get hot? And where do you
get 2 Amps?
Your resistor is 5 ohms?
John K.
- Original Message -
From: Jens Boos webmas...@jb-electronics.de
clip.
This
Rather than calipers, how about scanning it and importing to your
CAD/Drawing program. Then 'draw' over it on a different layer.
And, if you need measurements, do them on enlarged diagram with CAD or
[shudder] ruler on flat screen?
John K.
- Original Message -
From: koolatron
What about if it had PCB resist pens instead of fighting with Laser
transfers?
{An older ink-jet I have also has a flat feed from back to the front for
thick card but the thin sharp wheels that touch the printed surface for
pressure dissuaded me from trying various inks as resists anyway.
Maybe you missed this earlier piece of info:-
http://www.google.com/hostednews/ap/article/ALeqM5giHrMC9wYlOzOkUg9wNC2jVKugkw?docId=371623ab59694aef9f0a02fe83faca8a
john k.
- Original Message -
From: Instrument Resources of America iracosa...@hughes.net
The mains frequency, at least
Depends on def of 'old-timer' - I am 60 :-)
The caps I mentioned caused probs in mid1990s . The life-vs-volts was
available in the manufacturer data that the Lab used. Often very detailed
spec sheets were sourced from the manufacturers. And capacitor purchases
were in the millions - promoted
Er, are we being sloppy here rounding 17 to 20? Or do the weirder countries
[ie not Australia :-)) ] use 20 ? I thought it was bad enough rounding 16
2/3 [16 and two thirds] to 17 !
My home system used a motorised exchange ringer running at 16 2/3 . Had to
replace the contacts with standard
OK, so you have just outlined what you can do this weekend.. what are you
going to do for the rest of the next week? :-))
John K.
[who greatly appreciates that top notch report from you]
- Original Message -
From: dylan roelofs doktorb...@gmail.com
To: neonixie-l
Nope, can't read you :-))
jk
- Original Message -
From: Jonathan Peakall jpeak...@madlabs.info
To: neonixie-l@googlegroups.com
Sent: Sunday, August 14, 2011 1:24 AM
Subject: [neonixie-l] List down?
No posts for a couple of days. Testing, one, two, three...
--
You received this
Dieter, I have just looked in the Electronic Tubes and Semiconductor
Elements Universal Vade Mecum vol 1 by Piotr Mikolajczyk, 1960 and quite a
few are listed.
BTW, a lot of the book is also at Frank's site:-
http://www.tubedata.org/
Just to check... these are tubes for radio etc, not Nixies?
Lost me I think, but this group just sends to my normal email address as did
the previous. [I didn't use gmail for this and I didn't use yahoo mail for the
other].
John K.
[PS Didn't miss you :-)) . Just joking.]
- Original Message -
From: Jan Wuesten
To:
...clipIn theory, we could move back there, but its a big ask now that
several 100 members have moved here. clip
Eeeek !
John K
[No probs actually - I would go back if that is the decision.]
--
You received this message because you are subscribed to the Google Groups
neonixie-l
When you solder sockets to a pcb, you need to have a dummy plug [they were
used for normal valve work] or a 'standard' nixie plugged in. The socket
pins [of good sockets] can move around a bit. Before pcbs it didn't matter
so much. With ordinary valves there are specialised sockets for pcb use.
Didn't our member in UK do a post on the ones he was making that were
delaying some other task of his?
Mr Quixotic (?) John Smout ?
John K
Australia
- Original Message -
From: David Forbes dfor...@dakotacom.net
To: neonixie-l@googlegroups.com
Sent: Tuesday, November 15, 2011 7:29 AM
Did you check out cable/connector intermittent problems?
Have you done any PicKit s/w upgrades?
John K.
- Original Message -
From: jb-electronics webmas...@jb-electronics.de
To: neonixie-l@googlegroups.com
Sent: Friday, November 25, 2011 6:14 AM
Subject: [neonixie-l] OT: PICkit3
Ages ago someone {Nick D ?} suggested a better modern FET.
If you really get stuck I can mail parts to you from Australia. For example
check this supplier :- http://au.element14.com/
John K.
- Original Message -
From: Imbanon imba.a...@gmail.com
To: neonixie-l
If I'm not mistaken the tube sets its voltage.
If I say 'zener diode', does that help a bit ? Or forward bias voltage of an
'ordinary' diode.
the lamp will see the full 200V (or more). Doesn't that damage the lamps?
If there is a large enough current path the gasses will ionise and exhibit
Notice the website on the photo?
John K.
- Original Message -
From: Nick n...@desmith.net
To: neonixie-l neonixie-l@googlegroups.com
Sent: Saturday, January 07, 2012 7:28 AM
Subject: [neonixie-l] Re: Where can I send customers for 12VDC wall-warts in
UK in particular, EU in general.
When that HDD topic was discussed somewhere [here?] there was a post saying
that the actual device was used as part of an in-dash system. The 'flash
drive' was acceptable. However, that didn't answer the addition of weights
in the form of big nuts.
IIRC the topic related to imports to Russia?
Is that a typo :- Step 3 - is that a typo and you actually mean 1mS ? or
do you mean 1ms ?
John K.
- Original Message -
...clip...
3. wait for 1uS
...clip
Step 3 - is that a typo and you actually mean 1mS ?
...clip.
Chris
--
You received this message because you are
that clears it.
...clip
Now please go ahead and spit on me for using an arduino.
Sigh..
Cheers people
On Jan 10, 12:48 am, JohnK yend...@internode.on.net wrote:
Is that a typo :- Step 3 - is that a typo and you actually mean 1mS ?
or
do you mean 1ms ?
John K.
- Original Message -
...clip
Yeah I know about Siemens. Its just that I have this bad habbit
writing ms as mS from college. You are actually the first ones to
notice this and got confused, so I guess I should stop doing that.
No confusion.
Actually Chris was querying your micro- versus milli- second.
No one was really
Ask Microsoft. They ship buggy software, and make a pretty good living off
of it.
Err, no !I think you are referring to their feature-full software.
John K.
- Original Message -
From: threeneurons threeneur...@yahoo.com
To: neonixie-l neonixie-l@googlegroups.com
Sent: Friday,
To: neonixie-l@googlegroups.com
Sent: Saturday, January 14, 2012 3:59 AM
Subject: Re: [neonixie-l] Re: Preferred language, and a good place to start.
No, I worked there. Trust me, the bug tracking database for any version of
windows is astonishingly full.
...clip...
On 1/13/2012 12:40 AM, JohnK
I saw this referred to on the WS19 Group.
Ebay item 270895509819 seems to be an AVO valve data manual 4th ed.
However the current bids are at GBP 631 which is around AU$900. There is still
more than a day to go if anyone wants to grab a bargain:-))
John K
Australia
--
You received
Hmmm, I am in Australia too btw and have followed since your first post. I
wonder if you have picked up some of the local colloquialisms yet - 'having
tickets on yourself' and 'having someone load the gun for you but you
pulling the trigger' come to mind.
John Kaesehagen
Australia
[PS... Do a
Maybe dump the caps via an inductance [hopefully low R losses?].
Maybe monitor the current and switch it off as some of the H-bridge motor
drivers do? Except that uses some wasteful circuitry to achieve it.
John K.
- Original Message -
From: John Rehwinkel jreh...@mac.com
There was a classic instance here in Australia in either ETI, EA or Si C.
Apparently a disgruntled employee in a government or semi govt org [eg CSIRO
?] sent in more than one 'silly' in the name of the technical head of the
section.
The one that comes to mind was a suggestion for mounting
Sooo, back to my idea of surgical implants?
John K.
- Original Message -
From: Jeff Thomas nixich...@gmail.com
...clip..
AFAIK, there are very few women (or even fewer ladies) who would wear
a bulky watch of any kind in public.
...clip...
Regards, Jeff
--
You received this
Saw this posted by Seth on TCA Group:-
Aspen Pittman is selling off machine tools, and vacuum tube parts on eBay.
These were from the Owensboro GE plant. They include grid forming machines,
sealers, evacuation pumps, etc. Price (bidding) starts at $30K for all? Most of
the NOS USA parts are
I am interested in this seller too. There are two Russian sites that look
extremely similar and one of them has a weirdo CRT that I would like. I held
off ordering because they would only accept direct cash via a service I have
not used or know about OR via Western Union. I feel much happier
Ah, that is reassuring; I must check if Anton still has the CRT I want.
Pity that stories of 'baddies' out there make us so wary of everyone !
John K
- Original Message -
From: John Rehwinkel jreh...@mac.com
To: neonixie-l@googlegroups.com
Sent: Tuesday, February 07, 2012 2:03 PM
And on that subject, I have an in-house/tech publication from one of the
tube makers [Mullard?] that states that from a certain date they used the
improved cathode in all their tubes anyway. [The improved cathode was the
one they used in the computer tubes to overcome the sleeping-sickness].
What colour haze?
I imagine that you would have already mentioned if it is purple.
However, if it IS purple, and it being sooo important to be recognised as First
around here seemingly :-)) , I want to be First THIS TIME to mention Jimi !!
John K.
[PS. Background to the comment:- All this
I don't think that it is fair or nice to keep raising issues of
motives/ulterior-motives. It spoils the general enjoyment as far as I am
concerned.
Most of us are good enough at generating conspiracy theories as it is :-)),
and we are bright enough to not need the help thanks.
Opinions for
I have noticed many discussions about the lifetime specifications of Nixies. I
haven't noticed anyone quoting the manufacturer definition of lifetime - but I
may have missed it. So, read on ...
Electronic Counting circuits techniques devices , Mullard Limited, October
1967. approx. 220
!
On Apr 25, 10:26 am, JohnK yend...@internode.on.net wrote:
clip...
--
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To post to this group, send an email to neonixie-l@googlegroups.com.
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neonixie
Are you using their definition of fail.
They say when any character is unable to be covered completely but they don't
define just how visible the 'non-covered' area is. Their spec also has to be
either for the worst-case production scenario or a statistical value eg
perhaps the Bogey value
I have just today received a second copy, but with cracking spine - so I am
happy to force it flat on the scanner.
If anyone knows of an on-line copy please shout before I go to the trouble !
Nick, maybe you want to quote the Mullard book on the Wiki. The chapter
starts page 177.
John K.
I have an old 'condenser' marked in cm [centimetre/centimeter].
One recent doc explaining this early use of centimeter ...
http://web.mit.edu/sahughes/www/8.022/lec06.pdf
In cgs units, we measure charge in esu and potential in esu/cm. The unit of
capacitance is thus just the centimeter!
jk
Nice report [and I like the tone].
That photo of watch is interesting - I hadn't looked at yours before; was
waiting for firm results.
Good job,
congrats
John K
Australia
- Original Message -
From: Michel mic...@xiac.com
To: neonixie-l neonixie-l@googlegroups.com
Sent: Sunday, July
There are applications available on-line to allow overseas people to view BBC
[expatriots use them].
one is Expat Shield allows you to Watch UK TV online outside of UK. You can
now watch BBC iplayer from anywhere in the world.
John K.
- Original Message -
From: Tidak Ada
To:
From my experience of modern devices I suspected that they are extinct.
John K.
[Some background in industrial engineering, ergonomics and
design-for-manufacture (which of course musn't nullify the user and repairer
aspects).] Yeah I know repair, what's that? Goes to show my age.
I thought that the 'dead' band for 232 was -3V to +3V.
I have used 5V with printers and modems of the 1970s/80s.
Some 'cheap' RS232 drivers only used -5V and Gnd.eg the Microbee
computer.
Over short distances all sorts of liberties can be taken - it works; just
don't call it 232 !
John
RS232 spec is a range of voltage. There is a spec for the max supply volts
and a clarification for the 'logic' level.
eg -16 to -3 is one 'level' and +3 to +16 is the other. [I'll dig out my
copy if needed.]
Many receivers don't implement the dead area and some don't require the
change of
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 webmas...@jb-electronics.de
To: neonixie-l@googlegroups.com
Sent: Wednesday, October 17, 2012 12:26 AM
Just noticed this posted on a WS19 group by a G3:-
Yet another noisy piece of kit to mess up the airwaves.
I plugged in my new Raspberry computer. It seems to work OK but then I read
the back of the slip of paper that fell out of the box (the only paperwork
supplied in fact).
It's EMC compliant
That is what I remember hearing.
I offered them tubes on their list and a lead on the trigger tubes they
needed - got the intial discussion and then nothing. At that stage the
message was that they needed a whole complement of tubes. BUT, they must
actually have had the bulk of them already
So, did they actually have most of the tubes already?
I can't imagine them finding such a quantity of some of them.
John K
- Original Message -
From: Jon
To: neonixie-l@googlegroups.com
Sent: Wednesday, November 21, 2012 6:43 PM
Subject: Re: [neonixie-l] Harwell Computer
Valve [tube] filaments [heaters/cathodes in this case] generally do not have
life extended by running lower power.
Cathode emission is complex and heater should be run within the specs. That
spec is not just to achieve maximum rated emission.
Some oscilloscopes had a connection for cathode
I would have thought that with 10 being the maximum loudness then having one
that goes to 11 for extra loudness would be marvellous !
For anyone who hasn't heard the joke
http://en.wikipedia.org/wiki/Up_to_eleven
John K.
- Original Message -
From: Michel van der Meij
To:
http://m.9gag.com/gag/6305358
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To post to this group, send an email to neonixie-l@googlegroups.com.
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neonixie-l+unsubscr...@googlegroups.com.
For more
When the subject came up on TCA a few years back I pointed to the published
statement... it was generally agreed there that all companies used improved
cathodes. I don't remember whether anyone came up with a black and white
statement like the one I had.
I'll ask again.
A quick look at Kohl
I am keen to get an OCR for Russian [to scan a book on avionics and
aircraft instruments and translate it]
Any tips appreciated.
John K.
- Original Message -
From: Marcin marcin.r.adam...@gmail.com
To: neonixie-l@googlegroups.com
Sent: Sunday, February 17, 2013 2:15 AM
Subject: Re:
I like the NOS definitions. see item 121091873560
There is a line lower down
Actual NOS (Some Tubes Test NOS but have a few hours on them): No
Have a look at the envelope !
I guess NOS can mean 'old valve in the box the new one came out of.'
John K.
- Original Message -
I haven't tried, but scope clock is likely a relatively low voltage compared
to TV screens.
My old 5BP1 tube works OK at less than 2kV and the old b/w TVs were say 10kV
and colour say 25kV.
John K.
- Original Message -
From: Sture Nystrom nystrom.st...@gmail.com
To:
Sergio, I am not sure if you think that Per is having a go at you. He won't be.
If you look back at the topics in this group at both Google Groups and at Yahoo
Groups you will find a lot of discussion of power supply merits and pitfalls.
Maybe you have not been in the group for very long; those
Much UV leak out do you think?
John K
- Original Message -
From: threeneurons
To: neonixie-l@googlegroups.com
Sent: Wednesday, May 29, 2013 7:03 PM
Subject: [neonixie-l] 866 Mercury Vapor Rectifier as Novelty Lamp
I went to the TRW swap meet on Saturday, and picked up a
The small QI/Halogen downlight globes come/came in a couple of styles one
with the small QI/Halogen lamp at the centre of the reflector and open at the
front; the other had a glass plate across the mouth / front of the reflector.
That glass is for UV reduction. Don't know if it is special
So much for using webmail [I don't see quoted text]... I went off to look at
the data after reading Tony's post and the reply went to John R's post ; he
already said the main thing - DC.
Try a battery?
And maybe just a resistor from enable to rail I should have said. Have you made
a
Dalibor I posted a copy of this at the Tube Collectors Association group -
hope you are OK with that.
Congratulations on the work - I have followed your posts and said little. I am
very envious.
John Kaesehagen
Australia
- Original Message -
From: Dalibor Farný
To:
One of the early installations in Brit a/c had the on/off switch up behind
the pilot's head. He had gloves too ! And, guess what? The destruct switch
was just there too and not shrouded. Many IFF lost through accidental BOOM!
Hard to believe the design [even though they were obviously rushed].
I am interested in pics of insides if possible sometime...
direct to me if you don't want to clutter up Nixie :-)
John K.
Adelaide, Australia
- Original Message -
From: lai...@wcoil.com
To: neonixie-l@googlegroups.com
...clip
It really disturbs me that I can't find the IFF
Hey - Cute!
Glad you quoted the inspiration or I/we may have thought you watch too many
zombie etc movies [or games].
Developments:-
The pcb in the mouth could be shaped as [or inserted in] a bone(s) along the
lines of skull-and-crossbones.
Or, the pcb could be flexible and wrap-around the
Thanks for that; but the email is quite weird looking - I copy/pasted into word
pad and is now quite readable.
John K
Australia
- Original Message -
From: Nick
To: neonixie-l@googlegroups.com
Sent: Friday, January 10, 2014 3:25 AM
Subject: [neonixie-l] Re: Classic nixie/neon
Way back in '69 I used boot eyelets soldered into PCBs for the 4mm sockets.
Didn't get a cheap solution to the plugs though. None of the bent metal,
springy-wire ideas survived use. One idea that nearly worked was a smaller
eyelet for the socket and very flexible meter lead cable for the leads/
Depends on how and where you disconnected the trigger - may need to load down
that pin.
Can you confirm that lifting the wiper DOES trigger the tube? You could set
up the right conditions on the other pins [including trigger] and then
interrupt that circuit manually.
If it is a 'glitch' from
equivilents
Hi right I have broken the circuit to the solenoid from the cathode of the
gr44 all other wiring reconnected as schematic it does indeed fire the gr44 and
the solenoid if momentary disconnected so that does seem to be the source of
the fault. Bob
On 27 Mar 2014 09:33, JohnK yend
I still haven't looked closely to see what the wiper and track is and where it
is on the schematic. That said, my capacitor suggestion wasn't worded that way.
I suggest that the capacitor is wired such that one end is to the wiper arm and
the other end is to the track that the wiper arm is
Thanks for the pic of the wiper.
I trust the Electrolube brand products -
http://www.electrolube.com/
Others swear by a very expensive American cleaner/lubricator. That one has
cheap constituants that are marketed cheaply by others but those brands don't
have the 'magic' apparently. The
Did you follow the recent discussions re lights and UV LEDs ?
John K.
- Original Message -
From: bob harper
To: neonixie-l@googlegroups.com
Sent: Saturday, April 19, 2014 11:46 PM
Subject: [neonixie-l] light effecting GR43's?
hi all, GR43's effected by light??? this
I was about to reply the same then I started to think about what I could
actually quote.
This implies that a cathode gets activated after assemby and after/during
pumping.
What is the chemical during construction?
What is the chemical during operation?
What is the chemical after later
: [neonixie-l] Neon size limitations?
Quoth JohnK at 2014-04-29 11:37 ...
...
What is the chemical after later exposure to air?
And is oxygen the problem? (And does the problem apply to more recent
CRTs.)
Just pondering whether it might be possible to broach the vacuum under a
gas flood
Many of your tubes probably should be in your semiconductor collection.
And, if semiconductor is a dirty word, then in the bin !
Reference:- Kohl, Materials and Techniques for Electron Tubes A completely
revised edition of Materials Technology for Electron Tubes., 1960, Reinhold.
Page 551
Morris, maybe try having an idle current in all the lamps - just at the
filament starts glowing point [not visibly glowing].
Re LEDs, I noticed some small LED Xmas lights that had a bezel with an inverted
cone - apex pointing at the LED. They spread light around 'differently'.
John K.
-
Steel wool is good too - especially for rounded/curved surfaces. Needs extra
care at the start and lift-off points; a bit of practice fixes that.
I am not keen on the finish produced by steel wool in a drill press giving lots
of 'brushed' circular areas.
John K.
- Original Message -
Yes, the 2.1 and 2.5 are hard to tell apart. At least yours has the bifurcated
centre pin. There are so many brands and variations about you can have trouble
with intermittent connection.
A couple of years back I found that the selection at the local parts stores
[Jaycar, Altronics,Aztronics
This is interesting stuff.. thanks
John K
- Original Message -
From: Dekatron42
To: neonixie-l@googlegroups.com
Sent: Monday, September 29, 2014 12:09 AM
Subject: [neonixie-l] Re: Finally, an LM Ericsson RYG10 coaxial Trochotron up
and running!
I just added a movie
On the subject of lubricating plastics...
Nylon expands if it absorbs oils and greases [mineral vs vegetable ? i didn't
check]. This means that certain nylon assemblies can bind.
The usual lubricant seen on plastic gears is a grease with a filler ... like
the white grease used on curtain tracks
I want to place a fan underneath the clock to draw out this hot air, otherwise
the life of the clock will not be as long as it will without the heat.
Hot air 'rises' ie is pushed up by denser air. Pulling hot air down is not as
effective as helping it go 'up'.
AND, wherever you are moving
EEEk!!! Soldering is a skill... don't let him anywhere near it.
Inspecting solder joints is not easy, especially for novices.
I predict cooked board, delaminated tracks, overheated components
John K
Australia
- Original Message -
From: Tidak Ada
To:
I don't know why the FET was replaced. Either it was bad out-of-box, or the
assembler ...
Or it was just a late-arriving component and no problem at all.
AND, way back at the beginning...otherwise the life of the clock will not be
as long as it will without the heat.
Whilst in general terms
trichloroethylene more likely... sweet green death !!
I fought for many years here to have cigarettes, this and a bunch of other
chemicals banned in government workplaces - I wasn't popular.
John K
Australia
- Original Message -
From: Instrument Resources of America
Oh c'mon! You really left pin 17 U72 looking like THAT!
:-)
John K
[PS :-)) :-)) ]
- Original Message -
From: Terry Kennedy
To: neonixie-l@googlegroups.com
Sent: Sunday, October 12, 2014 5:12 PM
Subject: Re: [neonixie-l] Re: Nixie Clock Cool Project- a few questions
I will prepare a short video and show You what all is behind
Looking forward to that. And, the TCA guys should be interested too.
John K
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What about the lens that is half a cylinder [like in old calculator displays] ?
I have a half inch high one.. must go look at the distortion [and maybe should
have done it before posting - but I have to find it first!]
john K
- Original Message -
From: gregebert
To:
There are no-clean fluxes that definitely cause no probs in twenty-odd years
that I have observed them. And water wash ones too. BUT they need very
'fresh' components for them to be OK in manufacturing. [Speaking from
experience in an electronics factory].
John k.
- Original Message
Hey Paul, love that thing !
It is sooo nice I won't ask you what you killed to get the gyro :-((
[I have an interest in servo-systems, guidance, nav-aids etc ]
John K
Australia
- Original Message -
From: Paul Parry
To: neonixie-l@googlegroups.com
Sent: Thursday, February 19,
Maybe I am missing something when it comes to the way this works, but, when it
is not a vacuum as is required for a valve/tube then what about the idea of
pump a bit, add some of the eventual gas, pump again etc. The original
impurities would distribute 'evenly' through the added gas and when
GREEN for a voltage wire?
What is the first tube's number?
John K
[PS nice toy.]
- Original Message -
From: 'threeneurons' via neonixie-l
To: neonixie-l@googlegroups.com
Sent: Friday, March 06, 2015 5:07 AM
Subject: [neonixie-l] Plasma Globe Substitute
Last week, I went
I was querying the choice of colour for a wire that has voltage. In this
part of the world Green is associated with earth/ground. [Although
Green/Yellow has overtaken it.]
John K
Australia
- Original Message -
From: 'threeneurons' via neonixie-l neonixie-l@googlegroups.com
To:
How about the very miniature display tubes in [old] vid cam eyepieces then?
John K
Australia
- Original Message -
From: gregebert
To: neonixie-l@googlegroups.com
Sent: Friday, March 13, 2015 5:12 AM
Subject: Re: [neonixie-l] Re: OT: Do any long-life magic eye tubes exist ?
I didn't look closely when I mentioned about how to properly use heatsink
compound.
Was it hot before you added the heatsink?
Was it hotter after?
You pondered why the heatsink might make it hotter:-
Someone mentioned maybe glue conducting.
I mentioned the glue might insulate the heat.
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