AFAIK, no resistors. I am trying to remember off the top of my head, but I think the voltage drop was 5.76 something volts across the head (all 5 LEDs) and over 260 mA = over 52 mA per LED. Pretty badly overdriven. Half-life of the LEDs would be expected to be 2000 to 4000 hours at this rate of current draw.
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Quickbeam: ...Half-life of the LEDs would be expected to be 2000 to 4000 hours at this rate of current draw.<HR></BLOCKQUOTE>
Does "half-life" in this context mean the point at which the LEDS are only putting out half the amount of light per volt than when new?
I think there must be some sort of resistor in it because if you run it at 4.5v it's no brighter than a photon II. [img]images/icons/shocked.gif[/img] Plus, the LED's have a good heatsink (the bezel).
So something is keeping them from running at "full power" unless you apply the full 6v.
But I'm not tearing mine apart to find out! [img]images/icons/smile.gif[/img]
Hey Craig, I hear the "Punnishment Zone" could tear up the X5, then we could find out what's inside! [img]images/icons/tongue.gif[/img] [img]images/icons/tongue.gif[/img] [img]images/icons/grin.gif[/img]