Wow, that much from a 5mm IR LED? I knew they could take higher pulses but
I thought only a factor of 2-3 or so. Guess I'll give that a shot before I
use the star emitter.

Oh and yeah Ive seen various other methods of high speed photography, I'm
not looking to freeze frame water droplets hitting other water droplets or
anything, just get some action shots at the range. If the camera takes 150mS
from when the trigger box triggers to the shutter release, so be it, it'll
make for a neat electronics project. I might add an external input at some
time for other triggering methods.


Also, in the linked schematic, the representation of the pulsetrain looked
like it was a narrow duty cycle, do remotes typically use < 50% duty cycle
for the modulation?
Thanks.
-Jon
On Thu, Oct 15, 2009 at 2:29 AM, Jinx <joecolquitt@clear.net.nz> wrote:

> > 3W IR LED from deal extreme. It takes 1.5A @2v
>
> Jonathan, common 5mm IR LEDs will handle 1.5A pulse current for
> short periods. Use them with ZTX transistors, eg
>
> http://home.clear.net.nz/pages/joecolquitt/irtx2.gif
>
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>



-- 
Jonathan Hallameyer
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist