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Subject: Re: rear stop/tail light in led's

Date: 10/16/02 at 7:40 PM
Posted by: Ray
E-mail: rrogers@plaidheron.com
Message Posted:

In Reply to: rear stop/tail light in led's posted by toot on 10/15/02 at 11:57 AM:

Hi,
I don't have a direct answer; I could suggest an off the shelf product. For instance something from:
http://www.showtimeautotrix.com/lightsled.html
To dim the brake light I suggest switching half the lights off. Without control electronics you have to use a resistor (which may or may not work right) because the automotive battery can vary from 16V to 9V or so. To be legal I think you probably need a wider range.
I thought Linear Technology
http://www.linear.com
had come out with a brake light IC but I checked and they didn't seem to have a simple solution. I am sure that must be somebody who makes a controler IC but I don't know who. Please be aware that most LED's are nonlinear and to low a supply voltage will simple turn them off; but imposing to high a voltage will fry them.

Ray


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