LED's for sign lighting revisited [RE-wrenches]

[Steve Willey, Backwoods Solar]

I have made readable signs with LEDs inserted from rear in holes in a sign
to form point-defined letters. Viewing the letter patterns direct gives
readability at much greater distance with much less power than illuminating
painted letters from the front.   Letters about 6 inches high with about 6
leds each or more worked.  6 standard LEDs wires series will use near
correct milliamps on 12 volt, however that depends on brand and type.  A
small resistor may be needed to keep in a good range, about 20 ma. for the
strings of 6.  Superbrights cost a lot more and use different voltages and
current, I find about 3 of those in series work on 12 volts at correct
current.

Steve Willey   www.backwoodssolar.com
Backwoods Solar Electric Systems
----- Original Message -----
From: Wes Kennedy, Jade Mountain <wkennedy at jademountain.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, June 06, 2000 11:28 AM
Subject: LED's for sign lighting revisited [RE-wrenches]


> Howdy,
>
> I remember a while back, someone on the list was sharing successful
> use of LED;s for sign lighting.  I am unsure how to size the thing,
> ie how many LEDs per square area.  I have heard it said that 1 LED
> roughly equals 1 watt incandescent.  Any comments?
>
> Thanks!
> Wes Kennedy
> Evolutionary Technologist
>
> "Your philosophy is not what you believe, it's how you live!"
> -j rubin
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