Yeap, indeed. There was a few of those: The Futaba Jumbotron you have
mentioned, Itron 2F89068, Nimo (of course) and Telefunken XM1000, or the
soviet ILD3s or the thyrathron-style displays. The ITS1A is actually a
very similar concept.
On 9/02/2023 11:17, Adrian Godwin wrote:
These things are similar tech but for pixels rather than 7-segment :
https://www.youtube.com/watch?v=AclwH64eAkU
On Thu, Feb 9, 2023 at 12:06 AM gregebert <[email protected]> wrote:
I'm guessing that CRT-style manufacturing, where phosphor is
deposited on the tube-face, was well-established technology in the
1960's due to massive production of TV's. On the other hand, VFDs
were emerging technology because the much smaller size required
tighter manufacturing tolerances, and depositing phosphor onto a
conducting anode was still being perfected. Yes, this was done for
magic-eye tubes, but they had a very short lifespan, maybe a few
hundred hours. I'm sure the chemical composition of VFD phosphors
was also under development; they are much brighter than magic eyes
and operate at a lower voltage.
On Wednesday, February 8, 2023 at 3:22:24 PM UTC-8 marcin wrote:
Technically this device could be quite trivial. Simpler, and
less demanding tolerance than Nimo. Just one flood gun with
grids controlling the segments (as reported by riffuchs from
https://riffuchs.livejournal.com/153725.html), plus some
internal stencil-style screening between the 'segments'. Still
VFD does the same only so much easier. So, why? Longer
lifespan? Brighter? Fulfilling insane-price requirement for a
military order?
Pity the price, I love absurd technology. Anyway, seems that
such device was sold on ebay de in 2014 for 'pennies'
(radiokot.ru
<https://m-radiokot-ru.translate.goog/forum/viewtopic.php?f=3&t=27324&start=4660&_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=wapp>),
but I can barely understand what they were actually talking
about there, even with google translate. I wonder if it was
the tube(s) from riffuchs - riffuchs seems to be from Germany.
Marcin
On 8/02/2023 02:27, Olivier wrote:
I found this old page
<https://riffuchs.livejournal.com/153725.html>
It shows the same pictures as the ad! Strange.
Olivier
On Tuesday, 7 February 2023 at 6:36:26 pm UTC+8 marcin wrote:
Hi Guys,
have you seen this EEV E727G contraption on ebay
https://www.ebay.com/itm/115697380857 ?
I have never even heard about it, nor can find any info
about it.
Marcin
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