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Unread 02/03/2015, 03:59 PM   #24
theatrus
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Join Date: Dec 2004
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Quote:
Originally Posted by R_Mc View Post
Very cool build theatrus - I'm subscribed.

Have you looked into aluminum core PCB's? That seems to be the way to go for heat dissipation.
This is a single-layer Al core PCB. Its not any fancy process (the "china special"). If I attempted this on FR4, it would be thin and chock full of vias.

Quote:

Curious how you chose your LED's - specifically the deep blues, hyper reds and ambers. What was preferable about the deep blue and hyper red?

Why ambers over broader warm whites or neutral whites?
Different spectral points, deep/royal blue (450nm) vs "blue" (~480nm). Ambers so I don't end up with even more blue in the mix. Reds to end up with something at the top of the spectrum which most whites won't hit.

Since I've done goofed up the thermal mounting for the UVs, I'll probably have a handful of boards left over, if you don't mind a non-ideal UV channel.


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