Circuit for LED flashlight

bloguetronica

Joined Apr 27, 2007
1,541
As I understand, you don't need to emit in that exact wavelength. Anything in the vicinity of 365nm will work. You can even try black light tubes (the ones you can find in bug zappers), or black light blue ones (the ones with the black glass - they are similar to the bug zapper ones, but have a black filter coating that almost kills the visible light from the mercury arc). Both emit UVA in copious amounts. And it is a good solution if you are in a hurry.
 
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