Surefire KL3 finned (old) driver regulation & efficiency

el_Pablo

Enlightened
Joined
Nov 4, 2005
Messages
316
Location
South Korea / Switzerland
Hi,

I tested the KL3 led module driver from Surefire (old version with finned body).

i used a votage regulated DC power supply and 2 multimeters.

The load on the driver was a XP-G S2 from Cree (heatsinked)

voltage range of supplie for this test : 9V to 2V

photo.jpg



kl3_eff.jpg



kl3_reg.jpg


The led turn off at 2 volts. the led Vf was between 2.94v@9v to 2.8v@3v

The regulation drop off apear to be at 3.3V (missing mesure in the graph), but notice during mesuring.

For a old driver i feel like isnt too bad, with a wide voltage range from 9v to 3.2v.

The typical current to the led in regulation is 0.46A.


Regards

Pablo :duh2:
 
Last edited:
Top