On Fri, 19 Sep 2003 11:12:22 -0400, Tim Hart wrote: > I think you can pulse an LED at an higher ma and voltage if you limit > the "on time" and give it time to recover. If it's on 1/10 of the > time at twice the ma....it has time to recover? I might be wrong on > this.... Most LED datasheets will give a maximum pulsed forward current specification with maximum pulse width and duty cycle/repetition rate specification. The maximum pulsed current is usually on the order of 1.5A for a typical RED led for a few uSecs and a very low duty cycle. As Olin is oft heard to say (paraphrasing) "Read the datasheet -- the answers are there!" Matt Pobursky Maximum Performance Systems -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics