Pushing LEDs to the limit
Spehro Pefhany email (remove spam text)
At 07:10 PM 12/27/02 +1000, you wrote:
>How far can you push an LED when you pulse it with a low duty cycle?
>I want to get the maximum perceived light (brightness) from a 7000mcd White
>LED. (actually a number of them in a series/parallel arrangement)
In general, where the flicker rate is not perceptible, the highest
apparent brightness will be with DC drive, give or take a bit depending
on the semiconductor material and absolute drive levels. It will *not*
make a big difference except negatively at the extreme high end.
It's because of the way the human eye works- it is an "average" reading
device, not a peak reading device.
Spehro Pefhany --"it's the network..." "The Journey is the reward"
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