Why would it need to be perfect? I would think close to white would be fine.
You could just use the correct number of red, green, and blue LEDs and
current drive them. You could even dump a cap into them with a SCR or power
mos device to get high peak power. A processor could do the display and
timing.

T


"Martin H. Eastburn" wrote in message
...
You would need a uP scanner with a program for delay and dwell between and
on each diode.
That or buy perfect spectral set of eye sensitivity level.

So not so easy but doable.

Martin
Martin Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
NRA LOH & Endowment Member
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member


Tm wrote:
"Ned Simmons" wrote in message
...

In article ,
says...

Tm wrote:



Anyone try uaing one of the new super bright white LEDs for a strobe?


Somehow I doubt you could get a short enough flash to be
practical and I wonder about the max rep rate.
Intrested in the results if any one ever tries it.
...lew...

I don't know about white LEDs, but some of the small high speed (30
KRPM) winders I've been involved with use red LEDs as built-in strobes,
but not very bright.

LED arrays with sub-millisecond flash duration for high speed machine
vision illumination are common. The LEDs are driven hard to get
brightness, so duty cycle is relatively low.

Like this:
http://www.advancedillumination.com/category/AL.html



You could get white light from three (RGB) LEDs and have the high speed.
It could even have many LEDs to get the desired brightness.

Tom

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