Could you elaborate on this a bit?LED's are pulse & freq. modulated to in affect change the length of the pulse on and off times to change the colors & output, now days they figured the range required to produce white light which from there they can create the ranges desired. The drivers that do this are just as important as the diode itself, It is similarly done to VFD's to control motor speed but rather light output. One thing is weird is the amount of heat needed to dissipate which is important to do also but in comparing the ratio of light output to heat they are still superior to a tube type light.
I understand that LED Drivers can use PWM for dimming and control, but I have not seen anywhere that this PWM has an effect on the output coloration of the LED. I also understand that there might be a slight spectral shift with the decreased current, and less heat dissipation, but not to the point that you can control the coloration of a single LED. I believe that their is more to coloration then just PWM and voltage drops. For example a RED LED is red because of the following ingredients in making the semiconductor materials
It is elvolving fast these days, It is good to see how much has changed in the past year even, this is a good website. If you happen to read up on new stuff it doesn't hurt to post up post of new stuff like this!:tinfoil3:Google is a friend of mine, but really it is a website dedicated to all new LED tech that I get all of my information. Another good place to get information on all of the leading edge LED manufacturers and the comparison of all.
LEDs Magazine - LED Technology, Solid State Lighting and other LED Applications
I agree, doneThis thread needs to be a sticky and updated monthly if not weekly as new LED facts are learned.
Very similar to Halides except a lot more controllable and whereas most of the energy in Halides goes to heat, with LEDs, the vast majority goes to light and to wavelengths desirable for coral.I agree with the cost thing "OVER TIME" but MAN those REEF capable LEDs are no joke on prices!!! And for me I couldn't trust them on my reef??? Only because I never had LEDs other then they make GREAT Shimmer for moonlights!!!