On 6 Jan 2005 06:18:08 -0800, "Cecil Moore" wrote:
like what is the advantage over constant current LEDs?
Am I the only person in the world who notices such trivia?
It's been known for quite a long time: pulsed light looks brighter.
Being imperceptible flicker has to do with the Stroud Moment.

Richard Clark wrote:

"Cecil Moore" wrote:
like what is the advantage over constant current LEDs?
Am I the only person in the world who notices such trivia?

It's been known for quite a long time: pulsed light looks brighter.

I know that but am I the only person in the world who has
noticed that it is now being used on automobiles.
--
73, Cecil http://www.qsl.net/w5dxp


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On Thu, 06 Jan 2005 11:03:10 -0600, Cecil Moore
wrote:
It's been known for quite a long time: pulsed light looks brighter.
I know that but am I the only person in the world who has
noticed that it is now being used on automobiles.
Just as I figured.... another sucker ball.

Richard Clark wrote:
Cecil Moore wrote:
I know that but am I the only person in the world who has
noticed that it is now being used on automobiles?

Just as I figured.... another sucker ball.

Zero probability that you simply misunderstood my original
question? Did you know it is now being used on automobiles?
--
73, Cecil http://www.qsl.net/w5dxp


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On Thu, 06 Jan 2005 12:49:36 -0600, Cecil Moore
wrote:
Zero probability that you simply misunderstood my original question?
More to the point, did you? Aside from its sucker spin, then why ask?
Did you know it is now being used on automobiles?
LEDs have been in general illumination for quite a few years - even
for headlights. If they are new to you, you can't afford them.

Richard Clark wrote:
LEDs have been in general illumination for quite a few years - even
for headlights.

I know that. The question was and is: WHEN DID THEY START
TIME MULTIPLEXING AUTOMOBILE TAILLIGHTS? I am asking for
information and it's perfectly OK if you don't know.

Constant current LEDs have been in use for years. But it's
just over the last couple of months that I have noticed
the pulse-width modulation on some automobile taillights.
I suspect it's only one or two manufacturers so far.
--
73, Cecil http://www.qsl.net/w5dxp


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On Thu, 06 Jan 2005 13:30:37 -0600, Cecil Moore
wrote:
WHEN DID THEY START TIME MULTIPLEXING AUTOMOBILE TAILLIGHTS?
Who is THEY? This still sounds like a sucker posting.
Anyway, 5 years ago. Why don't you try rec.philosophy.automotive for
this topic?