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Mon Jan 17 00:04:09 EST 2011

Charge controlled LED

As the saying goes: stay away from inductors.  I've been looking into
efficiently driving LEDs without series resistors but it seems that
series resistance for inductors used in boost/buck is not really
negligible.

The thing with LEDs is that they can be pulsed.  As long as you stay
below the rated current on average things should be fine.  Is it ok to
put a large voltage over them for a short time?  That way they can be
fed from a capacitor and effectively charge controlled.


[1] http://www.piclist.com/techref/io/led/pulse.htm



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