Thread: who here knows about batteries and electronics?
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Old 03-11-2007, 01:18 AM  
Vick!
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Quote:
Originally Posted by rowan View Post
Vick, I'm not quite getting the "no resistor" thing. Internal resistance of what - the battery?
Well, If we connect 3 LEDs of 3v each in series with a 9v battery. Do we need resistor?
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