papasan
Enlightened
was caving last weekend with my underdriven 5W headlamp (it's prolly ~3 watts) and generally disgusted by the color temperature. the greenish beem isn't as bad as the old pee green luxeons but it's not nearly the snow white of the highly overdriven LSes. i'm hoping that eventually i'll be able to hook up a PWM to the output of the BB750...
-- (hmm, this wouldn't work would it? a constant current supply will increase voltage utntil the appropriate current draw is reached...hmm...i guess i'll need to replace the entire diver) --
...and crank up the BB750 all the way to get a nice white output while lowering the duty cycle to get better run times.
there is a large demand for good, reasonably priced headlamps from the caving community in my area. i've had several offers for my headlamp. if i get an acceptible-for-public-consumption unit ready i may make a few or outsource someone to manufacture them. i know several people here would go for them =).
I remember dat2zip mentioned that this would be his next big project, but i don't recall reading anything about it since.
unfortunatly, although i'm pretty good at copying other people's work i'm terrible with electronics.
-- (hmm, this wouldn't work would it? a constant current supply will increase voltage utntil the appropriate current draw is reached...hmm...i guess i'll need to replace the entire diver) --
...and crank up the BB750 all the way to get a nice white output while lowering the duty cycle to get better run times.
there is a large demand for good, reasonably priced headlamps from the caving community in my area. i've had several offers for my headlamp. if i get an acceptible-for-public-consumption unit ready i may make a few or outsource someone to manufacture them. i know several people here would go for them =).
I remember dat2zip mentioned that this would be his next big project, but i don't recall reading anything about it since.
unfortunatly, although i'm pretty good at copying other people's work i'm terrible with electronics.