TK's Emisar D4 review

[iamlucky13]

@sbslider

I stand corrected, I understand what Blue was saying now. But to poke at this a bit further, is the Vf at 0.35A really above 3V, and in the D4 now we are talking less than 0.1A per diode. I’m still thinking you are not staying in regulation on a rechargeable li-ion battery in a D4 before the voltage is so low it no longer safe to be operating. Guess it is time to investigate the Vf for an XPL-HI led.

The discussion is considering small differences, but here’s some data that addresses your next question:

XP-L HI 1A V2 LED Output test by Texas_Ace, Well, you have seen the HD, this is the HI. It is exactly what you expect.

See the title, it is another test. do I really need to explain this everytime? I abuse an LED and see what it does, same as all the rest of my victims subjects. Thanks to CRX for donation. Well, you have seen the XP-L HD test, so here is the HI. It tracks exactly the same as expected, just less output from the lower bin. I could have kept pushing it harder but I saw no reason to blow it. The numbers could be a tad low in the high end as my heatsink fan is messed up and I had to rig something …

Interpolating Texas_Ace’s data to 350mA, that would be 2.84V.