At 08:16 PM 4/18/2004, Brooke Clarke wrote:
>Hi:
>
>I would like to have good control of the current in the Red, Blue and
>Green LEDs.  The forward drops for the 3 colors are considerably
>different with Blue a little over 3.5 Volts.

PWM is the way to go.  Pick your supply voltage.  Then pick current limit
resistors such that you get full intensity white light at that voltage.

Have a look at <http://www.emanator.demon.co.uk/bigclive/rgb.htm>.

dwayne


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Dwayne Reid   <dwayner@planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
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