Re: [APD] LED Lighting or -- Looking for the go sign for cheap LEDs

["S. Hieber" <shieber at yahoo_com>]

--- Wright Huntley <whuntley at verizon_net> wrote:
> > 
> > 
> > 
> > 
> > 
> > Not overdone if you supply us with some schematics. I
> can
> > solder but I can't design the circuit
> 
> Find me a cheap supply of LEDs and I'll work on it. :-)
> 
> > 
> >>> but I would like to
> >>> roughly regulate the 
> >>> current to maintain constant output with age, temp,
> etc.
> > 
> > 
> > And to keep things kosher when one or more of the LEDs
> goes
> > south?
> 
> That is pretty rare, which is why cities like them for
> traffic control. 
> Ever seen a burned out one in a traffic light? :-)

No, but I've seen them burnt out in truck tail lights.
And onthe first nightlight I built, which then proceeded to
flash the rest fo the LEDs.  
> 
> > 
> > 
>
> >>> I see more problems working out mountings and
> attractive
> >>> housing. How do 
> >>> we keep food from fouling them, etc.? Will algae
> quickly
> >>> grow on the 
> >>> plastic lens and turn them off?
> > 
> > 
> > You could keep them above water, no?
> 
> I wouldn't be interested, having experienced the
> advantages of immersed 
> lighting. <g>

YOu could embed them in epoxy with only the lens
protruding. A pourable epoxy would work nicely to get a
layer thick enough to work but think enough to ot cover the
lenses.

Good luck with the heating.

Scott H.

=====
S. Hieber

__________________________________
Do you Yahoo!?
New Yahoo! Photos - easier uploading and sharing.
http://photos.yahoo.com/
_______________________________________________
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com
http://www.actwin.com/mailman/listinfo.cgi/aquatic-plants