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Author Topic: LED Sign without led's in the 50/60's?  (Read 245 times)
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cjdelphi
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« on: December 14, 2012, 09:57:30 am »
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while watching a show on fashion, while i was slowly nodding off to sleep while my wife continued to watch...


All of a sudden something interesting appeared! - imagine a scrolling LED sign, without any LED's, this brought up 2 questions, what/how?  anyway your
thoughts would be nice to read smiley


I recorded the video from my phone, take a look...

http://www.youtube.com/watch?feature=player_detailpage&v=gWvYYAM1E6Y#t=15s
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Riva
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« Reply #1 on: December 14, 2012, 10:08:02 am »
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Incandescent light bulbs.
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fungus
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« Reply #2 on: December 14, 2012, 10:42:32 am »
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Maybe they had a paper tape with holes in it for the letters...similar to the technology invented by Mr. Jacquard in 1801.

All you need then is some photo resistors and a bank of vacuum tubes connected to light bulbs.
« Last Edit: December 14, 2012, 10:46:04 am by fungus » Logged

AWOL
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I don't think you connected the grounds, Dave.
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« Reply #3 on: December 14, 2012, 10:56:28 am »
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http://en.wikipedia.org/wiki/Trans-Lux
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Pete, it's a fool looks for logic in the chambers of the human heart.

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