3 LED’s on 3 AAA Batteries?
Hey, I want to build a small light with 3 LED’s that runs off of 3 AAA batteries. I don’t know near enough about picking out LED’s. I am wondering if someone can make a recommendation as to what LED’s I should look at (voltage, current, Vr). There are just so many factors that I can’t figure it out. I don’t care if they are in series or parallel, just whatever would work best. Also, if you know and can figure it out, what resistors will I need. Thanks for any help!
I also want to build a separate circuit that is lightweight, runs on batteries, and has 2 separate very bright light blue or cool white LED’s. This one doesn’t have any specific battery needs (I am not fitting it into a small case) but it does need to fit into a costume helmet. Suggestions for this circuit would be helpful as well.
Thanks!
I think this link has a better explanation than the one I could give you (they have pictures and actual numbers).
http://www.ehow.com/how_4836713_design-simple-led-circuit.html
P.S. I think they use a 9V battery, but if you know basic algebra you should be able to recalculate your resistor value.
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