I converted one of the brass-style small flashlights to use an LED. Used one of my 660 nanometre deep red waterclear 5mm LEDs. Had to expand the hole in the reflector a bit, with a 7/32 drill bit. Jammed a 75 ohm 1/8 watt resistor into the space behind the reflector.
Not perfect. But promising.
Sent a note off to Phil.
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For version 2, I'll see if I can procure some surface mount resistors. That will reduce the space requirement behind the reflector.
Friday, January 11, 2013
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