Inspired by Lambda's mod of Harbor Freight's tiny single-123 flashlight with 1W Luxeon, as well as McGizmo's mod of the same light with a dat2zip sandwich, I decided to get my hands on one of these things and, with the aid of a top-secret developmental boost circuit, commenced to build a mod that drives a 5W HD Luxeon at FACTORY SPEC (690 mah!) using just one CR2. This is not a misprint, I did say CR2, the 3V lithium battery that's smaller than a 123, the same one used in tvodrd's little keychain light.
Below is the circuit, already potted in a thick white coating of Arctic Alumina to help spread and shed the copious amounts of thermal energy it will no doubt produce:
Here it is further potted into my exquisite, elegantly crafted "C-Can" (Copper Can) because the circuit was way too tall even for Don's E-Can!
Dropped into the HF light's diminutive body tube:
Cinching up the heatsink and waiting for the CW2400 to set:
Almost ready to rock:
aaaaaaand...Rocking:
The light produced was so intense it upset the camera's auto white balance and the light beige benchtop became a dark yellow.
I did not spin on the head for output tests because of a mysterious short somewhere that I just discovered, caused by the pressure of screwing on the head. Unscrew head, light goes back on. Hmmm...
Oh well, time to turn in for now, gotta work tomorrow (Labor Day -- double overtime and-a-half, can't be late..), then a mad dash back home late at night to get it all apart and reconstruct. See? That's what I get for rushing by being so excited...
If all goes well, tomorrow's title will be, "Introducing...the Baby Pin!"
PS. Get it? Space Needle -- Baby Pin? Heh heh...
Below is the circuit, already potted in a thick white coating of Arctic Alumina to help spread and shed the copious amounts of thermal energy it will no doubt produce:
Here it is further potted into my exquisite, elegantly crafted "C-Can" (Copper Can) because the circuit was way too tall even for Don's E-Can!
Dropped into the HF light's diminutive body tube:
Cinching up the heatsink and waiting for the CW2400 to set:
Almost ready to rock:
aaaaaaand...Rocking:
The light produced was so intense it upset the camera's auto white balance and the light beige benchtop became a dark yellow.
I did not spin on the head for output tests because of a mysterious short somewhere that I just discovered, caused by the pressure of screwing on the head. Unscrew head, light goes back on. Hmmm...
Oh well, time to turn in for now, gotta work tomorrow (Labor Day -- double overtime and-a-half, can't be late..), then a mad dash back home late at night to get it all apart and reconstruct. See? That's what I get for rushing by being so excited...
If all goes well, tomorrow's title will be, "Introducing...the Baby Pin!"
PS. Get it? Space Needle -- Baby Pin? Heh heh...
