Badboy 300 LuxIII module.....

[Dan C]

Earlier today I completed my first sandwich attempt, a BB300 with a LuxIII TVOK. I though this might be a good module for the smaller single CR2 and 123 lights, like the Firefly and cut down CR2 numbers. Man, this thing puts out a surprising amount of light! And running continuously in my chopped Arc AA/CR2 light does not turn it into a branding iron. Haven't finished a runtime yet, but it looks good so far. I have not heard of anybody doing a module with the BB300 yet which is odd. The upcoming MM lite may be better, but this seems like a nice unit so far. Anybody else tried one??

Dan C

 

[dat2zip]

cool.

can you make me a 1/2 dozen or so. J/K.

For many applications an underdriven Luxeon especially as they get more efficient is plenty bright for a given task.

Wayne

 

[Nerd]

Wondering if it's possible to make a converter board with a variable resistor for the sense resistor to deliver current to the LS that range from 100ma to 1000ma? Would there be a resistor of low enough resistance?

 

[dat2zip]

That's impossible physics. The sense resistor is well below the contact resistance one would find on the wiper of most variable resistances.

We are talking about a 1/10 of an ohm. There are no variable resistors less than 10 ohms.

The ones you do find will be larger than the flashlight you want to put it in.

There are other ways to adjust the Badboy.

Wayne

 

[McGizmo]

Dan C,

I have done a couple drivers in the 275 mA range and they're great. It IS amazing how much thermal output reduction there is when underdriving the LED's. You get good light, long runtime and great efficacy.

 

[PeterB]

Is the efficiency of the Badboy circuit better for low currents? I would think so, since square(I)R losses and transisor+diode drops are smaller.

 

[Dan C]

That's all Portugese to me Peter, but I did a very informal runtime test the other day. I ran my two single CR2 lights, one with a turned down MM+ Q3 and the other with the BB300 LuxIII. I have no idea what the output of the MM+ is, just adjusted it down to what appears to be about half the normal output. The BB300 had better output to begin with, and ran far longer to boot. And the MM+ light *still* got much hotter. Shoddy, apples to oranges comparison with a million variables I'm sure, but I like that BB300 a lot!

Dan C