Quote Originally Posted by jking
cao- it would be very interesting to find out what that frequency is. A problem with low cost digital solutions for pulsing circuits is that they are pretty slow.
There's also a limit on how fast we can switch the Luxeons as I seem to recall; the optical rise is about 10ns, and I have no idea what sort of shape that is. So let's say, we won't modulate above 2MHz. Still, you need fairly fast power FETs and the smarts to drive them. I have a number of ideas here, but capitalizing them is another thing altogether, and again for what sized market? Many folk seem happy enough with incandescent bulbs and plastic filters.