Do we know what the green phosphor is P1, P31 or something else?
On 18/07/2024 15:26, gregebert wrote:
Interesting that the supply mentions 3.2kV; the nominal anode voltage
is 1850 volts. As with nixie tubes, I suspect the current is the
critical parameter as it determines the brightness
/Martin
On Saturday 22 June 2024 at 18:55:25 UTC+2 Toby Thain wrote:
On 2024-06-17 4:59 a.m., 'Grahame Marsh' via neonixie-l wrote:
> Hi All
>
> Here's a scope clock that Nick Stock and I are just
finishing off. It
> was inspired by a AE
dekatrons for the division, right ?
On Mon, Jun 17, 2024 at 4:29 PM Nicholas Stock
wrote:
A small desk clock then...
LOL.
On Mon, Jun 17, 2024 at 8:24 AM 'Grahame Marsh' via neonixie-l
wrote:
Then you'll not be surprised by what I have sketched in a
notebook
17, 2024 at 1:59:39 AM UTC-7 Grahame Marsh wrote:
Hi All
Here's a scope clock that Nick Stock and I are just finishing off. It
was inspired by a AEG Paper from 1967 that Martin (Dekatron42)
sent to me.
Two case designs, a common horizontal case and a vertical case like
/archive.org/details/theoory-and-applications-of-trochotrons-h-alfven-ocr-1-p
Grahame Marsh has had them in his public Dropbox, he might still have
them but I couldn't find them the other day when I wanted to direct a
friend to them and I also got an email from the Tube Collectors
Association (TCA) about t
to glorify modern LEDs.
On Tuesday, April 9, 2024 at 1:12:07 AM UTC-7 Grahame Marsh wrote:
Hi Y'all
Please be aware that the Google Group system is sending more messages
than it has done recently into Pending instead of straight
through. It
can be 3 or 4 days before
Hi Y'all
Please be aware that the Google Group system is sending more messages
than it has done recently into Pending instead of straight through. It
can be 3 or 4 days before the Moderators are notified that there are
Pending messages so some of your posts might not appear very quickly.
I am a chemical engineer and when I retired I was working on the safe
landfall of north sea oil and gas. I have little formal electronics
training and I'm mostly self taught That said
I do a mixed bag of experiments using dead insect on a copper sided
PCB, a plug in board, a literal
Yep, google didn't like it but put it into a folder requiring moderator
attention.
Grahame
Moderator
On 29/03/2024 11:02, newxito wrote:
I'm just checking if Google automatically deletes all my posts or if
some "AI" filter didn't like the previous one...
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You received this message
:12, paulvr wrote:
This is my first post in this forum and I would like to introduce you
to my version of the scope clock. Mainly inspired by the work of David
Forbes and Grahame Marsh.
The work is not finished yet, but I have reached a milestone for
myself in that all components are on one PCB
The initial design was intended to include the OG4. The difficulty is that
the bulb size and the pin orientation is so different to the British and
American dekatrons. I would need to redesign and have made PCBs
specifically for the OG4. I’m unlikely to do this. I have loads of British
dekatrons
or wait until tomorrow and i will put it on tge dropbox
On Thu, 23 Jul 2020 at 22:56, Nicholas Stock wrote:
> Let's try that againmovie was too large..
>
> https://www.instagram.com/p/CCPMzuOjdBs/
>
> On Thu, Jul 23, 2020 at 2:52 PM Nicholas Stock
> wrote:
>
>> Speaking of glutton for
sorry about that, but I think I have just created some interest. The clock
will use six GC10B and variants and one GC12/4B.
On Fri, 10 May 2019 at 16:52, Nicholas Stock wrote:
> Wouldn’t hurt:-)
>
> Ha ha.
>
> We plan on offering fully built clocks and kits, but it’s at the
> development
Hi, hopefully Nick Stock and I will have a 7 dekatron clock (British
dekatrons only at first and perhaps Soviet tubes as a second step) clock
available in a few months time. We need to get the E1T kit finished first.
I should be able to post pictures of the dekatron clock prototype in a few
weeks.
Hi, I have a CRT that uses this base but I thought I would try to find
actual dimensions from documentation before I take measurements off the
tube. It is an odd beast as two pins are slightly closer spaced to identify
pins 1 and 7. It means sockulator isn't going to work. Grahame
On Fri, 24
Nick,
Interesting, how many volts does it put out? A bit like a one lead
taser perhaps? I wonder what the cats would think of it!
G
On 03/09/2015 14:03, Nick wrote:
Not my auction - I already have one of these - quite useful when you
are and about or in the lab and want to quickly check
For sale - eight 3L01 CRTs - brand new - hours of life - bags of
cuteness...
What an embuggerance :-(
Grahame
On Tue, Jun 2, 2015 at 2:29 AM, petehand peteh...@gmail.com
mailto:peteh...@gmail.com wrote:
My experience with Russian tubes, the 3LO1 in particular, is that
they
. I store
the words in an external eeprom, in the future I'm planning on using a
SD card.
Grahame
On 18/04/2015 15:14, John Rehwinkel wrote:
On Apr 16, 2015, at 9:26 AM, Grahame Marsh grahame.ma...@googlemail.com wrote:
FLW on a 1 CRT is easy
fbjfbgje.jpg
And on a 3 CRT, 6 letters (or more
of his life
Give a man a fish and he'll eat for a day; teach a man to fish and
he'll eat for the rest of his life; give a man a few cats and he'll do
nothing else but fish
On 16/04/2015 17:18, Quixotic Nixotic wrote:
On 16 Apr 2015, at 14:26, Grahame Marsh wrote:
I was looking for a much
On 16/04/2015 14:11, John Rehwinkel wrote:
I'm also working on an ongoing project to use an old monoscope tube as
a character generator to display nicely formed characters on a small
CRT. This could be the basis for a 4/5/6LW
project, including some fun effects like stretching letters
On 16/02/2015 16:23, Mihai wrote:
Any chance of going back to my initial question?
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I can't answer that question from knowledge. Gas filled tubes (being
pedantic these indicator tubes are not nixies) are relatively slow
devices as ionisation and deionisation are a slow processes. My answer
would be that HF noise would be ignored; now someone who does know can
knock me down
AC-to-DC converter LPF driver
rectification smoothing DC to driver
Are in some way equivalent. So decide on the degree of smoothing
required and you are home. But I think we have come full circle back to
your LPF requirement
I can suggest two ways - build a channel and experiment
On 08/02/2015 10:33, Nick wrote:
Pretty much every location has pros and cons - death taxes being the
only certainties !
Nick
--
And rice pudding
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I've been working on a chimes sounder for a clock. I've always ben
inspired by this
http://elm-chan.org/works/sd20p/report.html
But I've used a pukka 16 bit audio DAC to play WAV files off a SD card.
G
On 13/01/2015 10:31, Nick wrote:
Well.. I built the Letter/Box piece detailed elsewhere
Hi
The LM9022 IC which is a fairly niffty VFD driver has turned up on ebay
item 171472657676
No affiliation.
Grahame
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Hi Dave
I wondered how you were getting on. The trigger clock was a diversion
from scope clocks for a while and now I'm back working on my next scope
clock. 32 bit AVR at 66MHz, digital synthesis of the sine and cosine
waves (so no fiddly set up), 4kV CRT PSU so will drive most 5 CRTs
On 07/10/2014 17:12, 'threeneurons' via neonixie-l wrote:
... and this one actually works through the night! The other is now
being robbed for parts.
Here's a very rough video of the very rough board test build on a sheet
of mdf.
http://www.sgitheach.org.uk/rough.wmv
Aluminium and
Hi
I have been working on a new trigger tube clock that uses the Z700U
trigger tube. This tube has a priming electrode so works in complete
darkness. Results are very good. Details are here:
http://www.sgitheach.org.uk/nixie8.html
Enjoy
Grahame
Highlands Scotland
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You received this
On 19/08/2014 19:02, Dekatron42 wrote:
Here's the Russian text and English translation done quickly with
Abbyy Finereader and Google Translate (there are errors so please
check it yourself, i didn't have time to do a proper check myself).
/Martin
Ha! I overlapped with Martin with the same
The book is up on Ebay
http://www.ebay.co.uk/itm/Cold-Cathode-Tubes-John-Brian-Dance-1967-ID-10953-/131270014034?pt=Fictionhash=item1e904d7452
No connection.
The same seller has the book on AbeBooks slightly cheaper.
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@googlegroups.com] On
Behalf Of Grahame Marsh
Sent: maandag 18 augustus 2014 20:07
To: neonixie-l@googlegroups.com
Subject: [neonixie-l] Dance Cold Cathode Tubes
The book is up on Ebay
http://www.ebay.co.uk/itm/Cold-Cathode-Tubes-John-Brian-Dance-1967-ID-10953-
/131270014034?pt=Fictionhash=item1e904d7452
Eric
A quick look at my other books by JB Dance shows Electronic Counting
Circuits also published by Iliffe Books Ltd in 1967 has 390 pages.
Coincidence or answer?
Grahame
On 18/08/2014 22:15, Grahame Marsh wrote:
Eric
Well, it is identical to the hardback copy I have, same cover, same
missed the pages between p. 295 and p376 for a long time. Finally
somebody sent them to me.
Cheers,
eric
-Original Message-
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of Grahame Marsh
Sent: maandag 18 augustus 2014 23:22
To: neonixie-l@googlegroups.com
A hardback ex-library copy is up on AbeBooks but before you scramble to
buy it, the seller wants US$ 295. A trifle expensive perhaps for even
this rare book.
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Morris
Are you switching off the HT/EHT to the tube when the heater is off as
well? My understanding is that it is not good to switch the heater on
while there is full HT on any thermal valve/tube.
You might take the opportunity to soft start the CRT heater - I can PM
you a schematic I'm
Yes, you know the problem, I hestated because there is so much
mis-information on audio-fool sites. I just tend to take a
precautionary approach when I can to extending tube life. But running
the CRT heater warm is an alternative to full cold soft start. My
current scope clock which is
I would volunteer to do a chunk if told what, where and how.
Grahame
On 21/07/2014 21:05, Jon wrote:
Hmm, sounds like a job for a solution from the many hands make light
work school...
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To
Pete,
I'm glad you found the ideas useful. I have a much larger proverb list
which I chose from for my proverb generator when I became short of
flash. I can let you (or anyone else) have it to play with. It includes
a lot of other sayings, almost duplicates and the Way of Mrs
Cosmopolite
Miss Susan says that Nicholas can have a gold star from the stationery
cupboard
On 11/06/2014 11:15, Nick wrote:
I have contributed substantial parts of this article over many years,
but now its so hacked about that it has lost its structure and the use
of English, in part, is not good.
I would suggest getting a piece of ali from a hardware store and
practicing the technique before starting on the real thing..
Grahame
On 09/06/2014 14:57, JohnK wrote:
Steel wool is good too - especially for rounded/curved surfaces. Needs
extra care at the start and lift-off points; a bit
Another technique is call centre pull where all anodes and cathodes are
connected to a 90V supply (potential divider across 180V supply to ground)
via high value resistors (say 470k). Used in this design.
http://www.sgitheach.org.uk/nixie6.html
It means any residual charge is bleed off the
Perhaps I should use something less vivacious, yes. At first I just
left the strip light over the workshop bench on (40W at 1.5m) and that
was fine as well. I used the pond lamp as I had a spare to hand - it
needs to go out to the pond filter box now it is spring. Perhaps a
black light
Right, I've only seen the metal can version - that was a few years ago
as well. G
On 02/04/2014 21:21, Instrument Resources of America wrote:
P.S. Pic enclosed here of 0Z4G.Ira.
On 4/2/2014 1:15 PM, Grahame Marsh wrote:
Isn't the 0Z4 in a metal can?
:D
On 02/04/2014 20:39, Tidak Ada
I read it that Pete has two problems and I have one of them - poor
triggering in the dark which we understand and have fixes for based on
UV from LEDs (a semiconductor solution) or a pond UV lamp (i.e a valve
solution). But Pete has a second problem that I do not see which is
misfiring
I fully appreciate not wanting to change over 100 resistors! I can only
say that I have not had the ring failures under lit conditions that you
have. Under normal day/night running the clock would go for 3 or 4 days
before failing overnight. The normal failure would be a ring would have
I found this an amusing book to leaf through. Contains a chapter on
neon lamp circuits which is my excuse for mentioning it here. About 5MB
download.
http://www.sgitheach.org.uk/ElectronicGadgets.pdf
Enjoy
Grahame
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On 10/03/2014 02:33, John Rehwinkel wrote:
I'm wondering if the missing center tap connection is internal to the
transformer, not brought out external to the transformer, and therefore not
shown on either the schematic, or wiring diagrams?? It would not surprise me,
although I would think
John
Thank you for taking the photos and posting them. I particularly like
the little reed for calibration.
I was originally going to engrave the panel with high/low frequencies
but opted for a simple 0 - 10 as I was unsure how things would age; I
did realise the need for calibration
On 10/03/2014 12:35, John Rehwinkel wrote:
Thank you for taking the photos and posting them. I particularly like the
little reed for calibration.
I thought it was clever too, and it works pretty well - it's easy to turn the
dial until the strobe freezes the reed motion. That reflector you
the company now making the StroboTachs
charging $500 for a replacement flash tube.
John
On 03/08/2014 11:42 AM, Grahame Marsh wrote:
http://www.sgitheach.org.uk/strobotron.html
Enjoy
Grahame
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http://www.sgitheach.org.uk/strobotron.html
Enjoy
Grahame
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To post to this
Bob
I can do you E12 series from 1M to 10M as 5% 0.25W - so would need
values in series to get what you want.
Also in the Uk
Grahame
On 02/03/2014 18:23, bob harper wrote:
literally a few, a couple of 18 meg a couple of 22 meg and a 10 meg
thanks.i am in the uk somerset
On Sunday,
Bob
I also think that the applied voltage to the resistor in the anode
circuit has to be lower than the voltage needed for the anode-cathode to
strike itself. If higher then the R-C-tube will act as a relaxtion
oscillator. The voltage must be higher than the voltage that will fire
the
and the HP532A counter from 10 kc/s and below. Is
there any evidence it is possible to divide down from 4MHz to 400 kHz? I am
getting afraid that will be very difficult.
eric
-Original Message-
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of Grahame
The attached is one that I drew in Eagle. Divide by 10 (from 50Hz) then
5 to get 1Hz. A copy of published designs. Works very well, easy to
tune the two stages to the required factor. The divide by 5 will divide
by 6 as well.
Grahame
On 11/02/2014 22:07, John Rehwinkel wrote:
I've built a few dividers down to 1Hz and they work phantastically. Always use
the 6AS6 and not just any pentode.
However, Eric said he wanted a low power implementation. Which makes me wonder
if any of the subminiature pentodes out there could be
Time to blow the dust of that 2AP1 CRT and measure the e/m ratio of an
electron.
http://youtu.be/7pbfzp8DlYQ
I've told Javier about neonixie so I hope he is lurking by now.
Grahame
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To
Which brings up my other question from this discussion, what are the
failure mechanisms that would cause the Optocoupler to hold of 2 Kv
for a minute, but fail after an unspecified number of hours?
Is this dirt accumulation caused by the fields?, is it breakdown of
the plastics? is it
On 01/12/2013 01:22, David Forbes wrote:
On 11/30/13 11:13 AM, Grahame Marsh wrote:
I'm looking to pass a, i2c bidirectional data signal between two systems
that have about 2kV voltage difference between their respective ...
Grahame,
A quick Google search turned up this HP (Agavo) app note
On 01/12/2013 09:32, Matthew Smith wrote:
Quoth Grahame Marsh at 2013-12-01 19:18 ...
Thank you for the paper it has helped a lot - if I have read it
correctly, the best performance is a catagory 3 opto coupler can stand
off 1kVDC for 100 000 hrs. So it looks like my search for a part ends
sure each opto carries half the total isolation voltage.
Cheers,
Michel
on Dec 01, 2013, *Grahame Marsh* grahame.ma...@googlemail.com wrote:
On 01/12/2013 09:32, Matthew Smith wrote:
Quoth Grahame Marsh at 2013-12-01 19:18 ...
Thank you for the paper it has helped a lot - if I
: Grahame Marsh
Sent: Saturday, November 30, 2013 7:13 PM
To: neonixie-l@googlegroups.com
Subject: [neonixie-l] Slightly OT - 2kV voltage isolation?
I'm looking to pass a, i2c bidirectional data signal between two systems
that have about 2kV voltage difference between their respective
grounds. I can find
On 12/10/2013 11:08, Jon wrote:
I just picked up a couple of GE AR-1 argon glow discharge bulbs on
eBay as a reference for argon glow colour. Does anyone have the GE
datasheet for this one? I've drawn a blank at the usual sources.
Thanks,
Jon.
Jon,
There is a graph showing the light output
Yep, it carries a lot of information including date/time, try this link
http://www.freescale.com/files/microcontrollers/doc/app_note/AN1597.pdf
searching on 198khz phase modulation will hit a lot of related sites.
But I believe, like most AM services, the Beeb Radio 4 LW is doomed...
Grahame
Hi Clarke,
Please be aware that XC18 based clocks fail to count reliably in
complete darkness - my experience with one clock but I believe
experienced by others. I'd expect two electrode neons to behave
similarly but I've no direct experience. My XC18 clock I keep as a
demonstration clock
On 29/05/2013 19:02, JohnK wrote:
Much UV leak out do you think?
..clip..
Fo a go-no go test you might look to see if the UV is strong enough to
illuminate anything with UV writing on it. UK currency notes and
European passports carry invisible (to the eye) markings that
support about its safety in a tank designed for FeCl, they
said that the aeration would shorten the life of the etchant solution...
I'm NOT a chemist, so what's your verdict on that statement?
Cheers
Nick (t'other one)
On Wednesday, 20 March 2013 22:14:00 UTC, Grahame Marsh wrote:
Hey
Well I'm a chemical engineer so should I be better with the process
chemicals?
This is a link to my top dozen home made PCB tips
https://groups.google.com/d/msg/neonixie-l/jUUlqV-avvM/4JgBIFcBBtEJ
You can see my results on my electronics webpages
, just not familiar
with the whole process and thought I'd ask 'those in the know'
Cheers,
Nick
On Wed, Mar 20, 2013 at 1:47 PM, Grahame Marsh
grahame.ma...@googlemail.com mailto:grahame.ma...@googlemail.com
wrote:
Well I'm a chemical engineer so should I be better
On 13/03/2013 16:48, taylorjpt wrote:
http://www.tayloredge.com/reference/Electronics/Displays/Itron_FG326A-2.jpg
I have an attic full (About 2K) of these Itron FG326A-2
http://www.tayloredge.com/reference/Electronics/Displays/Itron_FG326A-2.jpg.
They are 32 character/14 segments with DP.
On 12/03/2013 05:51, Tristan wrote:
Have you seen here?
http://store.reuseum.com/Itron_Noritake_FG165S1_VFD_p/noritake-07-001.htm
Tristan
Yep, that's my fallback - was really looking for a swap as I have lots
of other things that glow (although not as many as some).
but thanks
Grahame
An interesting book, the volume I have is published in 1969 so it is in
the period that interests many. Several chapters on photoemission
(materials, diodes, tubes), semiconductors as photodevices, image
intensifiers and electroluminescent devices. Mostly theory and equations
but with a few
UTC-5, threeneurons wrote:
Grahame Marsh made a whole nixie clock using them. Here's his page
on it:
http://www.sgitheach.org.uk/nixie3.html
http://www.sgitheach.org.uk/nixie3.html
With some tweeking (adjusting some part values) it should be
doable with any trigger tube
something more subtle that would make them problematic as a choice.
On Wednesday, January 30, 2013 1:55:47 PM UTC-5, threeneurons wrote:
Grahame Marsh made a whole nixie clock using them. Here's his page
on it:
http://www.sgitheach.org.uk/nixie3.html
http://www.sgitheach.org.uk
wavelength is the most efficiënt ?
eric
*From:* neonixie-l@googlegroups.com
[mailto:neonixie-l@googlegroups.com] *On Behalf Of *Grahame Marsh
*Sent:* woensdag 30 januari 2013 21:31
*To:* neonixie-l@googlegroups.com
*Subject:* Re
Hi Alex
I've only used the IN13 (the one with the primer electrode) and they all
did as you described initially (despite the primer). I wrote the
microcontroller code to repeatedly sweep the tube current up and down
over about a second and left a batch of 8 running continuously. I think
it
Hi Aaron
You've confirmed what I suspected, that the focus voltage is moving
enough to unfocus the image as the beam current is varying. I will take
some measurements of beam current, focus current, focus and cathode
voltages and try to feed the focus from a more stable voltage, perhaps
Hi
I have added a webpage where I test a variety of other small CRTs with
the scope clock 2 hardware.
http://www.sgitheach.org.uk/scope2a.html
This page will continue to carry updates as I trial other CRTs and other
PSU configurations. I'm still extending the range of clock faces and
of the tube, I would expect?
The IN9 / IN13 bargraph clock is my next project!! Tubes are on the
way but hope I will have some time to work on it :-)
Michel
On Dec 12, 12:51 am, Grahame Marsh grahame.ma...@googlemail.com
wrote:
Hi
I have added a webpage where I test a variety of other small CRTs
Martin
Looks good - I'm envious of your stash of dekatrons but it is so good to
see them being used.
Which trigger tube/circuit are you going to use for the interstage
coupler? In experiments I have reproduced the standard GTE175M and Z700U
stage couplers, but you're using what must have
Hi
Having said the LM9022 VFD filament/HV driver chip had gone unobtainium,
I've found it back in stock with RS Components in the UK at about the
same price that it was when I last bought them from Farnell. Anyone
experimenting with VFDs might find this an interesting chip. I use it
in my
On 20/11/2012 11:06, Quixotic Nixotic wrote:
On 20 Nov 2012, at 10:38, Tom Nolan wrote:
It's so beautiful!
http://www.bbc.co.uk/news/technology-20395212
Cheers,
Tom
Is that the one Nicko donated tubes to and they never even said thank you?
John S
Yep, I donated some tubes as well - no
On 20/11/2012 14:34, John Rehwinkel wrote:
Having said the LM9022 VFD filament/HV driver chip had gone unobtainium, I've
found it back in stock with RS Components in the UK at about the same price
that it was when I last bought them from Farnell.
Now they show no stock, but say they can
On 14/11/2012 16:50, Nick wrote:
You need to do a Vetinari clock face (e.g.
http://www.youtube.com/watch?v=KHKOhO_-hZY)
Its just s irritating...
Nick
Nick
Thanks for the reminder - I need to add a Vetinari option to each clock
that displays seconds. A Vetenari Elvish or Klingon
Work in progress for a new scope clock. But fully working and complete
to date with schematics, layouts, all source code (GCC-AVR) and a
description of how it works.
http://www.sgitheach.org.uk/scope2.html
Enjoy
Grahame
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Michel
Yep, moonrise, set and phase is on my (long) to do list. I just had the
sun's equations to hand so was quick to put it.
Grahame
On 13/11/2012 10:42, Michel wrote:
WOW! Looks like somebody had some fun here! That astronomical face is
a very interesting idea, would be even better if
On 13/11/2012 15:59, Nick wrote:
Very pretty indeed, as always!
Nice PCBs - how are you doing those? (I know you use Eagle :)
Nick
Nick
Manufacturing I assume?
Eagle to laser film using my trusty HPLJ4 printer that's some 30+ years
old.
Photo etch pre-coated FR4 PCB (normally cut from
as well). I have experience in
film developing, so I imagine that parts of this process may be similar.
I'm hoping that if I do mostly surface mount, I can avoid the majority
of the drilling. Is that correct?
-Adam
On 11/13/2012 9:03 AM, Grahame Marsh wrote:
Grahame
Adam,
My top dozen tips
boards...
Please also let me know if you still have your Pro PCB VFD Approx Clock for
sale.
Best regards, Konstantin
www.kosbo.com
-Original Message-
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of Grahame Marsh
Sent: Tuesday, November 13, 2012 10:25 AM
On 04/06/2012 00:05, Tobias wrote:
I am trying some R and C measuring designs on the breadboard but
nothing too promising so far.
Tobias,
For capacitance you might look at these Elektor projects:
Low range
http://www.elektor.com/magazines/2011/april/pico-c.1738839.lynkx?tab=1
High Range
On 22/05/2012 15:19, kay486 wrote:
Exactly, or even times seven if you like almost flashing tube. Imo it
would look really really nice.
As mentioned by Jon, here's my 7 seg clock (inspired by Jon's clock).
http://www.sgitheach.org.uk/ss.html
I confirm all of what Jon found, the tubes
Nick
I do have this book as a paper original as well as this PDF. I don't
think I scanned it as I can't find any original scanned page sheets on
my PC. So I can't help other than do some of the splitting grunt if help
is needed.
Grahame
On 10/05/2012 10:06, Nick wrote:
On Wednesday, 9
*From:* neonixie-l@googlegroups.com
[mailto:neonixie-l@googlegroups.com] *On Behalf Of *Grahame Marsh
*Sent:* donderdag 10 mei 2012 12:32
*To:* neonixie-l@googlegroups.com
*Subject:* Re: [neonixie-l] Question on XC18 trigger
]
On Behalf Of Grahame Marsh
Sent: donderdag 10 mei 2012 14:20
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] Question on XC18 trigger tubes
Eric
I assume you mean Electronic Counting Circuits - I have not scanned
chapters
11 - Nuclear and 12 - Further applications, which covers your page
range
Dylan,
The main design flaw with the published trigger tube clock is the change
of supply voltage (I frigged the anode resistor to compensate). This
does effect the pulse carry timing considerably.The main problem
with the XC18 is it requires light to trigger reliably - leave the clock
On 4/15/12 12:33 PM, Quixotic Nixotic wrote:
If only Farnell in the UK sold a resistor with wires that are 1/8w,
but I cannot find any.
I think they do - e.g. Farnell number 1700243 or 9343040 are 125mW 3k3
axial leaded - or are you looking for something else?
G
--
You received
Michel
I use a clear protective lacquer spray that I normally use for
protecting PCB that are going in some location outside (eg greenhouse
watering controller):
http://www.rapidonline.com/Tools-Equipment/Electrolube-Clear-Protective-Lacquer-200ml-87-1204
Grahame
On 30/03/2012 00:56,
John
Alas, yet another typo - should read K[LINGON] the [...] showing the
optional characters in the command.
Thanks for the part numbers, I will add them to the parts list; as you
point out the transformer I used is a single 230V secondary.
Grahame
On 28/03/2012 22:38, John Rehwinkel
Thanks for sorting it...
That sort of transformer is going to work fine. The clock uses a lot
less than 15VA - I used that size for its availablity and donut hole
(not potted) to wind on the heater (filament) supply winding. In
practice you could use two smaller transformers 2x 0-15V plus
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