Consider asking on
http://groups.yahoo.com/group/Oz-Wireless
John K
- Original Message -
From: 'orange_glow_fan' via neonixie-l
To: neonixie-l
Sent: Monday, May 07, 2018 9:57 PM
Subject: [neonixie-l] circuit board creation.
Hi Guys,
First off let me say that I know
Great value in that reminder Gaston; well done.
Another regulator arrangement that needs great care is this.
I have seen instances where the shunt regulator is designed to deal with the
expected change in current in the load.
For instance the load might always draw at least 70mA and never more th
I was involved in the testing of Residual Current Detector designs in the ‘90s.
I know that you are discussing the DC at present but you guys also play with AC.
When it comes to a shock the path of the current is very important.
Research the topic a bit. AC and DC. It is surprisingly complex.
And I’d ask about mains stability.
Was half-wave ruled out?
John K
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of petehand
Sent: Monday, 25 March 2019 18:43
To: neonixie-l
Subject: [neonixie-l] Re: Q: Active full-wave rectifiers
I would use four
Hey Jens...
1). Don't call it VU unless you match the actual ballistics of the ORIGINAL VU
meter
2). Europe tends to use a PPM [quasi-peak] system. Peak Program Meter.
3). Consumer and pro levels are very different. They are often misunderstood
and hence mounds of garbage appear on the web.
garithmic
output that are quite handy for building a simple (not professional) VU meter.
Lots of things to read for me!
Best wishes
Jens
On 2019-03-28 8:10 a.m., johnk wrote:
> Hey Jens...
>
> 1). Don't call it VU unless you match the actual ballistics of the
> ORIGINAL VU met
Michael, I have to comment on the logic here.
You say you have one that is quite OK and seem to use that fact to rule out the
effects mentioned by Nick. Actually, I consider that the parasitic oscillations
idea is reinforced by your fact, not denied by it. When a circuit is on the
verge of mi
Has anyone noticed the eBay offerings of HUGE mAH banks? 50,000, 100,000,
33 etc ! One listing says the capacity is based on “theoretical maximum ”
- a new theory perhaps?
They are the same size and weight as the smaller ones. There are teardowns on
the web and youtube showing the marki
I have come in late on this. Martin will be right. It does look similar to the
Hamamatsu thingo.
I was going to suggest it is a flash tube for the StroboTac or similar. [but
that should glow I suppose].
I love doing "whatsits".
John K
-Original Message-
From: neonixie-l@googlegroups.c
A bunch of my email delivery posts are out of order and missing some [for lots
of groups].
I’ll comment anyway.
Notice that there is no smoothing capacitor in that diagram [if we are looking
at the same one].
This means that with the halfwave rectifier you are going to get pulsed DC
rising t
v TTL?
Richard
On Sun, 14 Apr 2019, 06:22 johnk, wrote:
A bunch of my email delivery posts are out of order and missing some [for lots
of groups].
I’ll comment anyway.
Notice that there is no smoothing capacitor in that diagram [if we are looking
at the same one].
This means that wit
Martin, let’s see what offers you get first.
I inherited many cubic metres of parts and semi-dismantled equipment about six
years ago. [You “knew” the guy slightly from AVO discussions iirc – from
Adelaide.]
I sorted a lot of it while the experience was a bit novel. I didn’t get back to
it aft
: [neonixie-l] OT: audio levels
W dniu piątek, 29 marca 2019 08:46:37 UTC+1 użytkownik charles napisał:
On 2019-03-28 10:09 p.m., johnk wrote:
based on teh RMS output (.707 of the peak)
That would be 0,707 (1/sqrt(2)) voltage output on a resistive load. RMS power
of a sine wave is 0,5 times
:30
To: neonixie-l
Subject: Re: [neonixie-l] OT: audio levels
W dniu piątek, 29 marca 2019 08:46:37 UTC+1 użytkownik charles napisał:
On 2019-03-28 10:09 p.m., johnk wrote:
the FTC in the States started cracking down and said that any power
claims had to be based on teh RMS output (.707 of
użytkownik johnk napisał:
Well, how do I say this Thomas?
It is NOT to be called Watts RMS !
They left the vital word out – it is Watts [RMS derived]. They left out
“derived”.
The RMS volts and RMS amps that you mention when multiplied together produce
Watts. Just plain Watts.
These Watts are
They interest me too. I do troubleshooting for a mate who imports LED lights.
When you pull apart OR store the LEDs make sure that you do not put any real
pressure on the soft rubbery potting/encapsulation of the LEDs.
COB LEDs are easily damaged – the bonding wires are delicate.
Some suppl
Well, what can we say?
I suspect that he knows Spinal Tap and maybe HE was the interviewer J
https://www.youtube.com/watch?v=4xgx4k83zzc
BTW, Justin, I hope you caught my recent diatribe on Watts and Watts RMS.
John Kaesehagen
Australia
From: neonixie-l@googlegroups.com [mailto:n
Haven’t seen one.
I wouldn’t be surprised if it is a stores item procured well after the hey-day
of tubes. There are many examples of tubes/valves with CV numbers amateurishly
stamped on them. The stamping rarely meets the requirements of K1001 standard.
Maybe someone used his kid’s rubber prin
I think that you will find they truly believe in the Western Electric reels of
vintage solder that pop up from time to time.
John K
-Original Message-
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of lokna...@gmail.com
Sent: Wednesday, 29 May 2019 23:5
>From time to time I come across discussions where radio restorers [domestic
and mil] want a low current valve-voltage (tube-voltage) power supply.
I often suggest that they look at the various Nixie supplies discussed here.
The usual response is along the lines that ANY "switching" or
not-lin
-emission switching supply. It
takes time and care and shielding. High voltage is more of a challenge.
On Fri, Aug 16, 2019, 12:27 AM johnk wrote:
>From time to time I come across discussions where radio restorers [domestic
>and mil] want a low current valve-voltage (tube-voltage)
Sigh, Tempest. "We" used to service some Tempest spec sites.
Btw, you need a security clearance to be able to access/read the spec too :-))
And, some of our guys just would not keep the spares cabinet locked.
I agree that shielding/filtering the supply is not impossible, but is so much
harder t
It means that he wanted to list "quite a few" items and had to use low starting
prices. I guess the one in question didn't get bidded-up. The aggregate list
value meant that he chose to risk not starting high.
Or am I missing a point here?
John k
-Original Message-
From: neonixie-l@go
What did he think would happen if he didn’t use a high starting price?
Can’t have his cake and eat it too!
I guess he doesn’t know what an auction is either L(
John K.
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of Bill Notfaded
Sent: Saturday, 17 Au
ebay???
It was $1 Buy-it_Now.
On Saturday, August 17, 2019 at 3:38:01 AM UTC-5, johnk wrote:
What did he think would happen if he didn’t use a high starting price?
Can’t have his cake and eat it too!
I guess he doesn’t know what an auction is either L(
John K.
From:
When "we" were manufacturing in the '90s the safe storage time for SMD was
around 3 to 6 mths. Surfaces weren't 'fresh' after that. Some was wave soldered
some reflow.
If that is a slow moving component then maybe they coated it with a solder-thru
protective layer? Doesn't seem like they used a
They look beautiful - I bet you 'feel good' when treating your Trochos so well
! I usually resort to pushing "blue links" onto tube pins when experimenting.
[Blue links - common name for those rolls of wire with a sleeved connector pin
crimped on every few inches. I first ran across them jumpe
I have a comment that is worthy of mention but may have nothing to do with your
problem.
The use of RCA connectors can be tricky. The earth/ground makes after the
signal connection. That means there is a possibility of very large common-mode
voltages.
For instance, consider the usual mains CD
I agree with Greg that loops are troublesome; I would like a bit more info from
Bob actually. [Drawings, photos, (off-list if you like) ].
What power [watts] is expected of the supply? What amount of capacitive
smoothing/filtering is on the high voltage?
This LED - it is across the HV?
Star ea
One of the 'requirements' here in Australia is/was for the primary and
secondaries to be on separated parts of the bobbin. I haven't looked for the
'rule', I just remember that when it was introduced the blurb with various
electronic kits [and advertisements] highlighted the fact that the mains
If you are going to use FPGA, then why not let it design itself?
http://www.damninteresting.com/on-the-origin-of-circuits/
John K.
[there are more learned refs]
- Original Message -
From: gregebert
To: neonixie-l
Sent: Monday, October 19, 2015 3:00 AM
Subject: [neonixie-l] Re:
re Hi-z meters.
A useful measurement technique is to provide a variable voltage approximating
the voltage that you wish to measure.
eg Potentiometer across a bench supply, with a common to the circuit under
test..
You connect you meter between the point to be measured in the circuit under
test
1). a shear cutter should be ok
and/or
2). wrap wire around the pin [and secure with silver-bearing epoxy?]
John K
- Original Message -
From: gregebert
To: neonixie-l
Sent: Wednesday, November 04, 2015 10:25 AM
Subject: [neonixie-l] Re: NL4998 4 digit watch
No easy soluti
A starting point is to look at the Average current.
Look at the On versus OFF times, duty cycle or whatever you want to call it.
Average the current over the whole time period.
eg if it is equal ON to OFF, the average would be 50%
Try working it out that way as a starting point. eg the power
So, off-the-shelf mains inverter PLUS simple power supply circuit from the
mains volts, OR add a transformer and rectifier/filter. ??
If safety is an issue, a zillion small powersupplies ?
John K
- Original Message -
From: Phill Scan
To: neonixie-l
Sent: Wednesday, February 10,
I thought you said it had to be car batteries?
BTW, unrelated, but something I am reading at present. A valve/tube-based
analogue computer.. attached is power supply requirement. Makes my rack
mount telemetry power supplies look puny. I'll keep an eye out for neon :-).
jk
- Original M
power supply design for
100 IN9s
Humm... I am going to have to think about this ... I am not sure I will have
the room for lots of little supplies.
On Thursday, February 11, 2016 at 10:51:05 AM UTC+8, Zedsquared wrote:
On 10/02/2016 05:24, JohnK wrote:
> So, off-the-shelf mains
Just take with the chance of implosion - the glass really can fly about.
Watch out for diamond rings...
John K.
- Original Message -
From: Bill Barnes
To: neonixie-l
Sent: Sunday, February 28, 2016 4:42 AM
Subject: [neonixie-l] My CRT Clock
Hello My name is Bill Barnes. I
I think he described/discussed the waterproofing a while back - search the
posts for it.
John k
- Original Message -
From: vfdclock
To: neonixie-l
Sent: Friday, March 11, 2016 6:09 PM
Subject: [neonixie-l] Have few questions about the NIXIE watch...
I am trying to design
OK... so why a getter in this one? All the little NEON tubes are each already
sealed.
http://www.tubecollector.org/zz1030.htm
John K
- Original Message -
From: Instrument Resources of America
To: neonixie-l@googlegroups.com
Sent: Wednesday, March 16, 2016 8:18 AM
Subject: Re
o have a good vacuum why not
to use getter. But why do they needed the vacuum envelope at all? There is
a version of this stabilizer without the envelope. Just four tubes packed
into a single base: http://www.radiomuseum.org/tubes/tube_zz1031.html
Marcin
On 16-Mar-16 14:47, JohnK wrote:
OK..
Well, when I first got that valve I thought as you do. But have a look at that
second photo.
And, because of a previous discussion after I sent the valve to Jeremy, we have
had him look at it closely - he agrees; definitely solid glass at those cut off
tips.
I have a second one somewhere but it
Ah, but four sets of closely-spaced elements in one envelope? Would it work?
That is why my first reaction was that they had locally walled off the
individual pairs but had left them all in one main gas container. I WANTED it
to be novel like that.
However, the tops are closed - note:- you can
Early LEDs had even lower ratings iirc.
I can remember flicking a design back where two LEDs were in parallel but
opposite ways around for ac operation. The fwd volts of the illuminated one
exceeded the specs for expecting long life of the other one.
John K
- Original Message -
From
Build a Tesla Coil in the basement?
John K
- Original Message -
From: Jeff Walton
To: neonixie-l@googlegroups.com
Sent: Sunday, March 27, 2016 2:01 PM
Subject: Re: [neonixie-l] Noble gas 'Neon' Chemical Sympols
Lots of basements with radon to spare... Too bad you can't co
I am wondering if they are in the Systron Donner(?) clock displays? Must dig
mine out and check - suspect they are a little smaller.
Got mine from a mil base closure in the 90s.
John K
- Original Message -
From: A.J. Franzman
To: neonixie-l
Sent: Tuesday, June 14, 2016 12:58 PM
Try this...
https://en.wikipedia.org/wiki/Krypton-85
You might be surprised at the number of tubes that over the years have had
'radioactive' contents. Many gas discharge devices had it added to regularise
the characteristics for light/dark operation (trigger tubes and regulators) or
their trig
Thanks for that Nick; I mentioned your post on the TCA Group and got this from
Eric Barbour...
"Um, you do know about this website, right?
http://ferretronix.com/tech/nixie/pdf/ "
John K
- Original Message -
From: Nick
To: neonixie-l
Sent: Friday, August 05, 2016 10:21 PM
I haven't looked at electro specs closely since the mid '90s. I was involved
with a product that used a conventional aluminium electro in an apparently
undemanding application. The value was 10uF and variously two types were used-
a 10VDC and a 25VDC [ or a bit higher - I forget]. The DC voltage
I saw a situation with a local power outlet manufacturer back in the 1990s. The
Neons in the outlet normally lasted for years.. then a batch lasted for a few
weeks before they went black. The same value resistor was used [and anyway,
some of the 'new' bulbs were fitted to old flushplates to als
But, if you get the maths right you can actually mimic the response.
[I have audio and broadcast radio station background btw]
Been here before with this argument of course. So, it is possible to get the
same indication but that leaves the semantics to deal with.
And there are subtle aspects of th
I too want to see the results of the post mortem. What IS the mechanical reason
for the spacer being free? Please tell.
John K
- Original Message -
From: Jon
To: neonixie-l
Sent: Tuesday, January 24, 2017 8:27 AM
Subject: [neonixie-l] Re: IN-13 Lifespan
Sounds like a go
Many years ago [50] in school physics we were told 27 feet per second for
'electrons' in wire and to treat "data/information" transfer like a long
tube full of ping-pong balls where you push one in at this end and one falls
out at the other.
John K
- Original Message -
From: "jb-elec
de track...
27ft/s seems high, see here:
https://en.wikipedia.org/wiki/Drift_velocity#Numerical_example
Jens
On 1/26/2017 9:28 PM, JohnK wrote:
Many years ago [50] in school physics we were told 27 feet per second for
'electrons' in wire and to treat "data/information" tran
I would like to get a few good pictures of Nixies in military equipment [not
expecting it to be mobile stuff].Preferably not generally available test
equipment but could be support equipment in the Defence industry.
Can anyone point to their favourites please?
John Kaesehagen
Australia
--
You
what you are after but a poke round this site and
associated links might be worthwhile.
http://watkins-johnson.terryo.org/surveillance-systems/RS-160/RS-160.htm
DaveB, NZ
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of JohnK
Sent: Thursday
Very very good advice from Nick in these two posts.
Changing like-for-like or interchanging if easy is valid - modifications
aren't. [Unless you deduce something from a *temporary* mod to allow you to
fix the original problem.]
I have had to deal with the fallout from bad approaches: "We" disco
OK, so now I looked at the schematic you posted [it is a slightly changed TI ap
it seems].
I took it at face value that the BOM was correct, but I don't see one in that
pdf you attached.
The schematic uses 7400 series.
There are "Changes to original..." at top left of sheet 4.
In those changes
Well, I was waiting off for other comments to surface or for the kit supplier
to pipe up.
I see a few choices:-
- contact the supplier for comment
- measure waveforms/ logic levels and act accordingly
- try specially selecting 74LSxx that work in the location [might be
temperamental with age, t
You run another risk.. the thing that smoked might have changed its
characteristics compared to a 'new' one. Can make a mess of cut-and-try design.
John K
- Original Message -
From: judge2...@gmail.com
To: 'Terry S' via neonixie-l
Sent: Tuesday, March 14, 2017 12:10 AM
Subjec
There are persistant reports here that some equipment buried at Maralinga
[British A-bomb tests] found its way to the surplus market [ie Waltham Trading
in Rundle Street, for those who are local. When I was at school I used to have
a part time job there in the mid '60s.].
John K
Australia
-
The phosphors wear out. The guys working on old green radios get caught by
scraping the labels/switch engraving that have stopped glowing [or the meter
dials]. The powder they produce isn't "safe".
John K
- Original Message -
From: andybiker
To: neonixie-l
Sent: Thursday, Ma
"We" used a couple of tiny very sensitive [and fast apparently] scr and
triac devices in an IR movement detector light for home use. Around the time
models were made for the UK market a fax was received from some US agency
via channels. It was a list of countries that it mustn't be exported to.
I am really surprised that no-one has mentioned the you-know-who saga.
John K.
- Original Message -
From: Nick
To: neonixie-l
Sent: Wednesday, March 22, 2017 4:02 PM
Subject: Re: [neonixie-l] Lixies/Tixie Clock
On Wednesday, 22 March 2017 09:13:31 UTC+4, gregebert wrote:
Some of you might like what you see in the files/photos section of this Google
Group or the old Yahoo Group - pics of non-nixie displays and lots of
interesting stuff.
John K
- Original Message -
From: Manuel Azevedo
To: neonixie-l@googlegroups.com
Sent: Friday, March 24, 2017
oup guys.
https://groups.yahoo.com/neo/groups/NEONIXIE-L/info
John K.
- Original Message -
From: Paul Andrews
To: neonixie-l
Sent: Saturday, March 25, 2017 2:04 PM
Subject: Re: [neonixie-l] Lixies/Tixie Clock
What files/photos section? i.e. How do we access that?
On Fr
Good outcome. I wondered what had happened.
Saw what you meant as soon as I looked at the docs. At least you know what
tweaks to do if anymore funnies turn up [ageing, temperature etc].
You can often scavenge the old parts from recycling centres if they haven't
actually chewed up the boards for
Yeah Chuck.. but the interesting thing is that it is supposedly very closely
based on a TI ap note or some such.
I was looking forward to some input from the seller. But maybe this is
public and wasn't "addressed" to him.
Still think it is/was in his interest to comment though.
John K
- O
I suspect that he meant if you wanted the 1ve supply, then the devices he
mentioned give it easily directly from your low voltage supply - I don't
think he meant you to use up your precious High Voltage. Presumably you are
running the high voltage generator DCDC conv off a low voltage? You aren
What is the latest on low stress sockets?
3D printer ones coming along?
I am keen to hear from you all about the latest successes.
Anyone contemplating a ZIF style - either rotate or slide locking etc?
John K
--
You received this message because you are subscribed to the Google Groups
"neoni
To:
Sent: Sunday, April 02, 2017 12:36 AM
Subject: Re: [neonixie-l] Re: Constant current source design
As I see it, the base voltage needs to be -5V wrt to the emitter, so if the
emitter voltage is 200, then the base voltage needs to be 195. Am I missing
something?
On Apr 1, 2017, at
Well, the programs just make dodging, burning, fading, silver mask jobs etc
easier.
Nothing wrong with using all the tools - there are some subjects that can't be
photographed well enough no matter what the photographer's skills.
Just because air-brushing was overused doesn't outlaw it.
Face it
Hmm, are you talking QA or QC?
By 'product engineer' you make it sound as if you think you can treat the
process like a 'recipe'. You are relying on experts in the various fields
required rather than having any direct knowledge yourself? High quality
components can make a high quality dud too by
I told this story here to the previous generation of readers...
In a facility where I worked for a few years back in the mid-1970s there was
also a two-rack-cabinet trigger tube monster.
Its task was to check the teletype data that was arriving over an HF radio
network. When [parity] errors were
Hah! It isn't really about the QM, it is about the technology and the
engineering knowledge.
Your "we" had better have some real engineers in it!
You are sounding more and more like a "Product Manager" as we call them out
here.
Once all the technologically-required steps are known, we get the I
rs carry the parts needed, and they're more reputable too.
High-quality parts would equate to less of a headache.
On Wed, Apr 19, 2017 at 10:37 PM, JohnK wrote:
Hmm, are you talking QA or QC?
By 'product engineer' you make it sound as if you think you can treat the
I do not know how to properly applaud Dalibor. It seems such an empty thing
coming from myself. I am just an observer.
However, I am so absolutely impressed with what he has done. It quite goes
beyond the obsessive amateur radio guys filling a room with gear, the amateur
scale-railroad enthusias
Yep, wonderful stuff and I was aware of it. By Dalibor's work I meant more
than the production -sorry, me being language-lazy. The tantalizing stills
at the start and of the move to the castle are more the thing I meant. A
complete "life of..." I guess :-)) The everyday things that don't
Seem to remember an effort to put clips and pics into one folder though -
but whether that was before or after AJ (?) revamped the albums.
John K
- Original Message -
From: "Nick"
To: "neonixie-l"
Sent: Monday, April 24, 2017 9:25 AM
Subject: Re: [neonixie-l] Video with nixies disp
Wonder if any of their lighting is fluorescent tubes :-)
John K
- Original Message -
From: Instrument Resources of America
To: neonixie-l@googlegroups.com
Sent: Tuesday, May 16, 2017 10:26 AM
Subject: Re: [neonixie-l] eBay GSP disposes of CRT for no reason
From the way th
PayPal oftens pays for returns. But it might give a black mark.
John K
- Original Message -
From: Craig Smith
To: neonixie-l
Sent: Saturday, May 20, 2017 3:04 AM
Subject: [neonixie-l] B5750 Nixie tubes for sale in a week or two...
OK, I saw an auction on eBay for B5870 Ni
err, watch the potential there. Scope earthed/grounded? Scope floating? HV
supply earth/gnd referenced?
Maybe a different technique for a non-EE?
John K
- Original Message -
From: "Instrument Resources of America"
To:
Sent: Tuesday, May 30, 2017 9:30 PM
Subject: Re: [neonixie-l] Pu
Glass cracks tend to travel. I wonder if the ' glue ' they use for car
windscreen cracks might help?
John K
Australia
- Original Message -
From: Robert L
To: neonixie-l
Sent: Thursday, June 08, 2017 4:18 AM
Subject: [neonixie-l] Re: Well I tried, big tubes on ebay this am
I have a clock using NL 8091.
It is a Systron Donner master display that could also drive a slave [or more?].
I posted details in th eold Yahoo group.
Googling this " not-small nixies in Systron Donner model 8181 clock display
" will get some of it.
I looked at the old group photos and can't
Well you said/he said "My old man had a saying: 'Cheap at half the price!'.
"
BUT I suspect that you mean he might have said Cheap at Twice the Price when
he meant a bargain. Dear at Half the Price is said too for when it ISN'T a
bargain..
I can remember when I was doing tech work at a radio st
ur NL-8091 on ebay
Cracked a fruity?
I had to google that.
A friends little kids used to say that when they passed gas!
On Thursday, June 8, 2017 at 9:50:12 AM UTC-5, johnk wrote:
Well you said/he said "My old man had a saying: 'Cheap at half the
price!'.
Have a look at Jeremy's beaut pages
http://www.tubecollector.org/exhibits.php?cat=33
John K
Australia.
- Original Message -
From: Roddy Scott
To: neonixie-l
Sent: Thursday, June 22, 2017 1:55 AM
Subject: [neonixie-l] Re: A Couple of Oddities
The VS10Gs are Ericsson an
There are "tricks" to cleaning ordinary relay contacts, but I am assuming that
you mean the stepper relays here?
Stepper relays are usually exceedingly reliable right to the point where the
contacting metal is worn away. There is a caveat though - the voltage needs to
be high (eg 48V) and the
"In case you're wondering, I have thought of 3D printing a mechanical
gear-clock but I have not yet figured out how I want to put nixies in
it"
Well, how about using up a bunch of dud Nixies? Use ones with faulty digits and
just rotate [carousel arrangement] a working one into position
There have been a few stories told on a few Groups about ebay Global Shipping.
Saw this just now at TCA
First Post.
http://www.ebay.com/itm/Mullard-ECC33-NOS-Valvo-Amperex-1958-D-Getter-6SN7-GT-Vacuum-Tube-Valve-MDGGZ-/332275838610?hash=item4d5d2eee92:g:lmMAAOSw3v5YpJGn
Am I missing som
I saw this post by Joe Sousa over at TCA Group.
--
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To post to this group, s
Sorry, that earlier post just posted itself before I finished :-)
So:-
I saw this post by Joe Sousa over at TCA Group. Mailed him about posting here
but no reply (yet). Joe was a member of the Yahoo Group, no idea if he still
follows now.
John K
Australia.
Joe's post
"I have surveyed m
err, I think the point is NOT TO use the Global Shipping by selecting another
category, because they DO open [some/all] packages. See various stories
circulating. They obviously find it easier when the description tips them off -
like the guy who lost his amplifier, NOT just the valves in it.
I
When I mentioned "rules" I meant it as distinct from the laws and regulations.
I was meaning the writing of job procedure rules that allow them to work within
the laws. For example - how to tell the difference between a getter flash and
mercury.
Impossible though; too many reasons why it wouldn'
And what mains voltage was it originally intended for?
John K
- Original Message -
From: Paul Andrews
To: neonixie-l
Sent: Friday, June 30, 2017 7:23 AM
Subject: [neonixie-l] Something a little different
While wandering flea markets looking for nixies, or things I can put
[I am a bit behind in my reading :-) ]
Didn't someone [here or TCA Group] say that those twits are judging mercury
content by the 'mirroring' seen on a tube? [and/or just its era.]
Any getter flash etc will be mistaken.
John K.
- Original Message -
From: Manuel Azevedo
To: neon
Bit of a note re static. There is more to behaving properly than you might
think.
-The IC tubes known as 'antistatic' were just coated so that the triboelectric
effect was less. Those tubes were not protection against local static
discharges.
- read up on Faraday shielding. And the conductiv
Reminds me of the stacked number [globe lit, prob not neon lit] display in
the frequency counter by [probably] Advance.
I have one but it is buried right now. There used to be a photo in the 'old'
photos section.
Couldn't spot one quickly with a web search.
John K
- Original Message -
An aside: If that board gets buried in a hard to open box, consider "gluing"
the clear plastic sides on those 3mm sockets. It sometimes doesn't take very
much angled force on the plug [like a cable pull] to pop the side off.
John K
- Original Message -
From: newxito
To: neonixie
The web is full of fact and OPINION so be careful which content you choose to
believe [we all know this].
AFAIK the usual electros that we encounter are not a PCB problem, but ARE
various other problems. If standard electros have PCB content I definitely want
to know - but I really avoid contact
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