A question about LED's

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BobFromChicago

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Oct 8, 2009
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Chicago, IL.
I am in the process of making my second mod, it will be switchable from 3.7 volts or 5 volts, i want to have two (2) seperate leds (one green, one blue) to serve as an indicator to which voltage your using, the question is this, because of the way it is wired if i have it on 3.7 volts that light lights up but if i switch to 5 volts they both light up, how would i get it so only one lights up? would i use a diode in the line to prevent the the current from reaching the othe led? I am not well versed in electronics so i am not even sure if i got the terminology right.
 
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