Hi Martin,
This seems to be a bare VFD, the elektor article gives the pinout and a
fair guess at how to drive the filement.
I'm not sure you'll find a full datasheet due to the age.
treat it as any other VFD.
Cheers,
Andrew
On Wednesday, January 31, 2024 at 6:58:53 PM UTC Dekatron42 wrote:
Search on Amazon for "car wiring tape" or "car harness tape"
It's sticky on one side, cloth on the other to stop all those rattles in
cars!
good stuff.
On Sunday, December 10, 2023 at 3:36:58 PM UTC Ron Walsh wrote:
> What you describes sounds a lot like wiring harness tape. It is
>
Hi Nick,
With the half life of Krypton 85 and the amount left since 1983 (date on
data sheet) you'd have to break at least 12,000 nixies at the same time.
If I had that many and broke them, it would be a very bad day indeed.
On Thursday, October 12, 2023 at 4:04:06 PM UTC+1 Nicholas Stock
Well done!
Nothing silly about it!
On Monday, July 3, 2023 at 1:46:19 PM UTC+1 Audrey wrote:
> If it works it works!
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Jamie,
I have had exactly this problem with these B5750 tubes!
I'm glad it's not just me.
I've had 7 open circuit, I had 4 shorted to another digit, I had another
tube with a resistance between two digits - not a full short!
These were also on boards that had a lot of hours on them and looked a
I'm really sorry to hear about John.
He and I developed the approximate clock and the pinball time many years
ago. He had a wonderfully creative mind and his passing is a great loss to
all of us who knew him.
My thoughts go out to his family and others who knew him.
Andrew.
On Monday, August 8,
I think these match the XN3 - looking at the coarse mesh.
Somewhere I have a couple of upside-down nixies that came from a scale.
They are in poor condition with corroded leads (but working)
They show 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8
really unusual!
Andrew
On Thursday, July 21, 2022 at
It's also worth mentioning that with a multiplexed design it's easy to dim
the tubes for a dark room and obviously extend the life.
I have a bedroom arduino-based clock that has 4x NL5780 multiplexed.
The brightness auto-dims so that it's nice at night (and at a level that
would be invisible
Seems a fair price.
The tubes seem "well used" (silvered) and some not nicely stored.
Remember that these were an easily replaceable item at the time and were
often over-driven in equipment to get more brightness.
I have 6 of these in a clock that is direct-drive and has been running 24/7
since
Multiplexing isn't needed.
There are several old documents showing how to drive these.
This has been discussed here too - search fo bi-quinary nixie
If driven from the "old faithful" 74141, do not connect the LSB (or 1s),
and use this bit to select the correct anode.
This could be as easy as
Hi John,
The scans you posted answer all of the questions.
There is no "display controller" as you'd expect from the modern "fruit
machine" displays.
All we have on the board is latches and level shifters.
pins 16,18,19 control a shift register (TL5812) to select the digit
position to display
Shwmae But.
Hi John, I'm here!
Looking at the picture of the display it looks like a parallel interface of
some kind.
There's a micro and ram on the board.
I wonder if it's compatible with another pinball display ?
Unlike the newer displays these do not appear to have any power supply
onboard
I know there were several plasma driver chips used in the early 90s (I have
some SN751518s used from a laptop neon display)
I have data on these and they are open drain - ideal nixie drivers but
these chips have been obsolete for years.
Modern-ish plasma televisions use newer chips.
I recently
Regarding radioactive "stuff",
I've had an old clock - about 50mm in diameter that was on an old motorbike
I bought about 30 years ago.
Research identifies this as from a WW2 German bomber.
It doesn't glow any more but I took it into work to test it with the geiger
counter (that is used for
About a decade ago I used the *TINY* neons from disposable cameras to make a
fake 'colon' tube - it worked really well.
Now years later I cannot find any, all new disposable cameras use an led.
Does anyone know where I can buy some?
These neons were about 3 mm in diameter and about 4mm long. I
Just an idea, what about an old watch/clock face with glow-in-the-dark
paint on it?
I have an old (ww2 german aircraft) clock that I took to work to check on a
geiger counter.
My boss insisted I take it straight back home after seeing if showing 100
counts-per-second.
I think the radioactivity
PS,
I've been tempted to use a stack of 2032s in a 'Smarties' tube.
At one UKpound for about 8 (24v worth) then 4 pounds would make a small 96v
battery.
Andrew.
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