Whilst looking for something else I discovered this from Wireless World,
May 1975, I wonder if they've got any left?
[image: B-7971AddWirelessWorld1975.JPG]
Discount for bulk too ... sigh
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> On Apr 2, 2020, at 3:09 PM, alb.001 alb.001 wrote:
>
> the photo of the energized lamp shows orange neon-like colour so probably
> neon gas content includes some argon which generates UV to activate the
> phosphor coating. I purchased a large number of similar bulbs with 2 inch
> leads
I love those weird 8-segment digits!
On Wednesday, April 1, 2020 at 4:13:37 PM UTC-3, DaveE wrote:
>
> I’ve picked up a few of these over the last while - they’re quite
> ubiquitous so I tend to leave the pristine ones alone and have made one
> clock already from a damaged one in poor condition
Update...
Decided to tear down. Now to find a cool circuit build a clock on the
cheap and lazy wayand very small...
On Wednesday, April 1, 2020 at 11:27:45 AM UTC-7, martin martin wrote:
>
> Hello all.
> I was cleaning the office with all my "spare time" and found this!
>
> Date code 1974!
the photo of the energized lamp shows orange neon-like colour so probably neon gas content includes some argon which generates UV to activate the phosphor coating. I purchased a large number of similar bulbs with 2 inch leads from the former Active Surplus in Toronto. Electronic Goldmine
I've bought similar bulbs, with leads. Several years ago I bought a box of
1000 green "NE-2" from China, and sold a few batches to neo-nixie members.
It's hard to tell what the internal gas is, but when it ionizes it also
causes the phosphor coating of the bulb's interior to glow. The nice
Check this out
https://www.amazon.com/NIXIE-ORANGE-LUMINOPHORE-TLO-3-2-LIGHT/dp/B074V9TWM5/ref=sr_1_1?dchild=1=b074v9twm5=1585848919=8-1
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Dang, I don't think I've ever seen 7971 tubes that black. Maybe it was just
the lighting.
For stuck segments, I've had great luck dislodging them by smacking them around.
Michail Wilson
206-920-6312
-Original Message-
From: neonixie-l@googlegroups.com
Hi Martin,
for fun & learning I have converted a calculator with VFD display into a
clock by simulating keypresses with a microcontroller. I had to figure out
the keypad wiring and use two analog multiplexers back-to-back to "press"
keys. So the uC "dials in" the time. In some visualizations it
>
>
> Your thoughts?
>
I have a similar era calculator, just a bit earlier I think, with a
panaplex type display. It does not do floating point arithmetic, so I am
kind of lost with it (I forgot how to manage the decimal point, over the
decades). It's sitting on the floor of my shop, by the
When I had partially it segments, I was able to fix it by increasing the
anode voltage to about 180-190V. Others have reported fixing shorted
segments by hitting the tube, gently; you almost have nothing to lose.
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My listing - no idea if anyone has a use for bad B-7971's
3 of these have been running 24/7 as a clock for about 15 years, other was
faulty when I got it
https://www.ebay.co.uk/itm/Burroughs-B7971-Nixie-FAULTY-x4-for-parts-display/202953903576
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