Flashing LED; also, by extension, the name of a solar engine based on a flashing LED. A flashing LED is just an LED with a built-in microcircuit to cause it to flash periodically. Since the FLED draws current when it flashes, we can use FLEDs to drive a number of timing-dependent circuits (via the fact that it periodically becomes conductive).

Like other LED, FLEDs are light-sensitive, and so flash faster in brighter light. Note that some FLEDs need 3 V minimum to work in, but FLEDs don't in general require current-limiting resistors (at least, I've never seen one that does).

See also the EncycloBEAMia diode discussion here, and the BEAM From the Ground Up article on FLEDs here.

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