Emitter is either XB-D or XT-E. XT-E being the more efficient of the two.
My HD 3aaa’s came with XB-D’s in them, very imperssive little emitters for being SO CHEAP.
HD also has some home lights that have “X” leds in them for like 12 bucks with tons of them in there! Thought about buying one to use for a little the rip it apart and make a new contraption. :bigsmile:
EDIT: looked at the 60w and there are 20leds in it!
Just bought a pack of these and my wife, who has no interest in flashlights so therefore my obsession is dumb and a waste of money, actually is thrilled with the one I gave her. She keeps shining it around the room and cant decide whether to put it on her nightstand or in her car. I finally scored a few points for the light hobby.
I wonder if the high and low are controlled by the resistors and if I could figure out which one is in the high circuit, I might remove it for a brighter high, with a Nichia 219 or XM-L. From the photo, anyone got any ideas??
Looks like those two 1R5 resistors are the sense resistors. They look to be wired in parallel, but can’t tell for sure. Probably does PWM for low mode.
You probably don’t have a meter good enough reliably to check low resistance values, so look at the pads on those resistors with a magnifier. If you can see that they are connected together at each end, then the resistors are in parallel.
Or you can try metering across the resistors. Short the probes together to get your zero-resistance value. The measure across the resistors and subtract that value. something around 0.8 ohms means they are paralleled.
I picked up a two-pack last night for $9.88…they threw them in the wrong bin! Very impressive lights for $5!! What would happen if it was dedomed? More throw, warmer tint?
I’d guess the resistors are in parallel, and the medium mode is done via PWM. While in Medium mode, wave something shiny like a screwdriver tip in front of the light. If the motion appears smooth, it’s not PWM. If you see 20 screwdriver tips all at the same time, it’s PWM.
Precisely, and I recommend not waving screwdrivers around while drinking screwdrivers. Someone could lose an eye… plus you’ll look really stupid in the flashlight aisle at HD.