Re: ATM DIY LED Flashlight Conversion

[PFAFF2@delphi.com (Robert C. Pfaff)]

>A current source is the thing to use, not a voltage source, with LEDs. 
>The current will rise exponentially with the voltage, 


>> 
>>   I certainly wouldn't just hook up the LED without a resistor as someone
>> else suggested; your really wasting energy that way!  (and burning up
>> something that should last a long time)
>> 

Hey ATM's all those little LED's that are used for reticule illuminators
use a pot (variable resistor) in current mode (in series). Yes the 
LED's are small but they run these on watch batteries. They last a long
time. I like things simple :-) KISS principle

Bob Pfaff