unseen wombat
New Member
I have one of those mini LED flashlights. It has a white LED, which has a turn on voltage of 3 something volts, right? Yet the flashlight runs on a single AAA battery, which only supplies 1.5 volts, right?
How is this possible? What kind of black magic is going on inside my flashlight? And, can I exploit it to power several LED's in my circuits without having to use a 9V or 12V battery?
How is this possible? What kind of black magic is going on inside my flashlight? And, can I exploit it to power several LED's in my circuits without having to use a 9V or 12V battery?
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