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Goedjn Goedjn is offline
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Default Basic DC electricity question

On Wed, 14 Feb 2007 11:28:38 -0600, Chop Suey
wrote:

HK inspired greatness with:

FYI, we're building a small airboat. There are four 3v LED lights powered
by 2 "C" batteries and a single 6v motor powered by 4 "C" batteries.



You do know that LED's must be wired in series with a resistor to make
them glow, right?



Actually, they don't. They have to be wired in series with a resistor
to keep them from eating your battery whole, but as long as you have
enough voltage, they'll light.

You can make the worlds smallest flashlight by just taping
the leads of an LED to either side of a watch battery.