Thread: who here knows about batteries and electronics?
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Old 03-07-2007, 05:15 AM  
Tempest
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Join Date: May 2004
Location: West Coast, Canada.
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Quote:
Originally Posted by rowan View Post
LEDs are diodes but they don't have the same forward voltage as say, a rectifier or silicon diode. A typical forward voltage for a basic opaque red LED is 1.8V, green is slightly higher at about 2.0V, and white goes higher still, up past 3.5V. That's why many LED torches use 3 x 1.5V cells, to avoid the need for circuitry to step up the voltage.
As I said, it was "from what I remember"... I haven't worked with the specifics in over 10 years now so am a little rusty.
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