On Fri, 14 Oct 2005 16:11:05 GMT, Asimov wrote:
"Roger Conroy" bravely wrote to "All" (14 Oct 05 09:06:17)
--- on the heady topic of " Pulsing LEDs for higher efficiency"

RC From: "Roger Conroy"
RC Xref: core-easynews rec.radio.amateur.homebrew:88243

RC If the brightness of an LED is a 1:1 linear relationship with the
RC power supplied, that suggests that perceived brightness of a pulsed
RC LED would be neither at the arithmetic mean (average) nor at the peak
RC but rather at rms (root mean square). Comments?

I'm pretty certain it is not a simple rms function because the
duration of the visual persistance effect must be taken into account.
If the peak brightness duration is long enough it will be perceived as
brighter than the average.

Perhaps. But, will it _illuminate_ any better?
The OP wasn't interested in _staring_ at a bank of leds. :-)

Maybe better discussed in rec.bio-tronics HI!HI!

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
Pueblo, Colorado | @ | Jonesy | OS/2 __
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