dhenry:
350mA,
That's hardly "high power".
3.5a? maybe.
It's all relative DH, after a newby is done blinking his 20ma standard leds, stepping up to a 350ma led is a 'higher power' step up in my book. It's where you have to learn about good constant current control methods and proper heatsinking and wearing sunglasses if you are going to look straight at them.
Lefty