[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [APD] LED Lighting
A few thoughts:
The light might be more focused than you expect.
The wall warts put out a different voltage than the rating
-- this is almost always true.
Put a series resistor in line -- get several or use a
variable to get the right value, the lowest value that
lights them up is probably what you want to use. Probably
somewhere around 100-250 ohms. Use a nice hot irom for
quick soldering ;-)
--- Andy Lavery <wagoneer78 at hotmail_com> wrote:
> Wow, You guys are sure making me think here! But its
> great - keep going
> (I'll just need to go buy my old electronics 10/11/12
> texts and refresh my
> poor aging memory)
> The LEDs I've chosen to use have a Vf of 3.6v Vmax of
> 4.5, If 30mA peak
> 100mA - now call me crazy, but I was just going to use a
> good old 4.5v 1.6A
> wall wart to power it, running all the lights in
> The setup I was going to use to actually mount the LEDs,
> was to use a 1x1
> chunk of project board - mounting each LED individually,
> connecting wiring.
> Then I was planning to seal the base in 1/4" of epoxy -
> thus basically
> making it waterproof.
> If the 2g test tank works well, I've already ordered the
> components to try
> it out on my 20g, rather than trying to light the whole
> tank per se... I was
> planning a strip of 45deg LEDs run down the centerline of
> the tank roughly
> every 4" for 'overall' lighting, then using 'spotlights'
> (an array of 3-4
> 20degree LEDs) to put the extra light where its needed.
> Why waste energy
> putting all that light in an area that isn't planted -
> Thanks again - you guys are great... On another forum I
> asked this question,
> all I got was "It will never work"
> MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*.
> Aquatic-Plants mailing list
> Aquatic-Plants at actwin_com
Do you Yahoo!?
Find out what made the Top Yahoo! Searches of 2003
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com