[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [APD] LED Lighting
You'd need a hood full of them, probably, but so what, if
they are cheap enough? But there's the rub. They aren't
cheap enough for a hood full. And with that many, plus the
wiring needed, without mass production it would hardly be
worthwhile -- unless the super brights become much much
cheaper. The biggest I've seen are about 13,000 mcd. That's
bright enough for street lights but not for glosso.
Still, they make nice nightlights. Aqua Medic used to sell
a two led night for about $90. YOu can make one for about
$10. That's DIY that makes sense. Replacing PCs or T5s with
LEDs? Still in the curiosity corner of the lighting shop,
--- Jim Miller <jim at jtmiller_com> wrote:
> no...the resistors would not be redundant. and for
> lighting a tank with leds
> at other than "moonlight" levels a switchmode current
> source would be
> preferred which definitely means a transistor(s).
> i wonder how practical this actually is however since the
> leds i'm aware of
> are a few milliwatts output. even at 50mw that's 20
> required per watt. so
> for 20 watts you'd need 400 leds.
> seems pricey...
> good luck
> ----- Original Message -----
> From: "S. Hieber" <shieber at yahoo_com>
> To: "aquatic plants digest" <aquatic-plants at actwin_com>
> Sent: Monday, December 29, 2003 4:14 PM
> Subject: Re: [APD] LED Lighting
> Wright do you really think transistors are needed in a
> power supply? Low voltage DC, a rectifier and some
> resistors ought to do the job. But with enough to light a
> tank, even the resistors would be redundant, no?
> Scott H.
> Aquatic-Plants mailing list
> Aquatic-Plants at actwin_com
Do you Yahoo!?
New Yahoo! Photos - easier uploading and sharing.
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com