I actually used one of the MV1 LEDs in a clock in ~1970. It was purchased as a
surplus item from a magazine ad for Poly Packs. My recollection was that it
was "seconds" and about $5-6 each. They were really dim but looked just like
the article photos. I used it to rectify the low voltage pri
On Thursday, April 12, 2018 at 7:51:31 AM UTC-4, AnubisTTP wrote:
>
> I am not sure if this is offtopic or not, if so, mods please remove. I
> have recently come into possession of a small quantity of Monsanto MV1
> LEDs... the MV1 is the first commercially produced LED, released in 1968.
>
Do
It is an interesting piece of history, because the LED marks the
beginning-of-the-end for nixie tubes.
Happy birthday, LED. 50 years old now.
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These LEDs are very dim...they can be seen as a dot of light from about 2
feet away in a normal indoor room, but sunlight renders them completely
invisible. The only time I have ever seen them used in a piece of equipment
was in a teletype tester as a panel indicator; the operator would have to
Early LEDs were not bright enough to be seen in broad daylight. That was
one of the advantages of numitrons.
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His site points out that the light is very dim.
Hard to believe the LED has come from that to today, where a single LED can
literally blind you.
On Thursday, April 12, 2018 at 10:09:44 AM UTC-5, Jens Boos wrote:
>
> This is pretty interesting. On the pictures on your website the LED looks
> a b
This is pretty interesting. On the pictures on your website the LED
looks a bit dim. (But, having photographed my share of Nixie tubes, I
know how difficult it can be to get the brightness and all details
right.) So I am just wondering how bright this LED appears in person?
Also, what current d
This is fine. No problem.
Mods
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When I built a new clock 3 years ago, I didn't keep the tubes in the same
positions. However, there was one that was showing signs of poisoning and I
swapped it with the left most tube at the time. Otherwise, they haven't
moved for 3 years.
Kiran
On Wednesday, April 11, 2018 at 5:47:29 PM UTC
I am not sure if this is offtopic or not, if so, mods please remove. I have
recently come into possession of a small quantity of Monsanto MV1 LEDs...
the MV1 is the first commercially produced LED, released in 1968. I am
selling these for $12 dollars each; I figured I would try selling them here
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