At 20:36 11 July 2007, Eric Greenwell wrote:
Paul Hanson wrote:
Again, I
am ALL FOR LED's, I just think that more research/regulations
need to be applied to them so as not to add more unnecessary
hazard to the roads, and more buyer awareness to support
it. Whether everyone notices this phenomenon or not,
it only takes one confused driver to ruin your whole
day/night.
For the doubters on this thread--does not noticing
something mean it does not exist or matter?

Happily, it doesn't exist on my trailer or motorhome.
According to an
email I just received from the light manufacturer (Maxxim),
their lights
are not pulsed. So, I can now recommend them without
reservation.

I did come across a forum discussing automotive LED
lighting, and some
of them had the same problems Paul does, so he's not
the only one. I
have no idea how widespread the problem is, however.

My suspicion is after market suppliers like Maxxim
don't use pulse
circuitry because it adds cost but no value. LEDs and
a few resistors
are going to be cheaper. The car manufacturers might
find it a useful
technique to control intensity and flashing for brake
and warning
signals. Some use pulsing to provide the daylight running
light
function, for example.

--
Eric Greenwell - Washington State, USA
* Change 'netto' to 'net' to email me directly
* 'Transponders in Sailplanes' http://tinyurl.com/y739x4
* 'A Guide to Self-launching Sailplane Operation' at
www.motorglider.org


Thanks for sharing, it is great to know of a manufacturer
off hand that has the 'good ones'. I am going to switch
to LED's soon, and you just saved me a bit of my own
research :-). If I end up getting some different ones
that are also good though, I will be sure to post it
here.

Paul Hanson

"Do the usual, unusually well"--Len Niemi