I doubt it. Iām not sure, but I think the KR1 driverās regulated circuit only goes down to 5A as the lowest turbo level. This is fine for the W1/W2 LED options, and for XP-L and SST-20ā¦ but Nichia 219B canāt really handle that much power. Itās rated for 1.5A and really should be kept at 3A or less. So Hank would need to make a lower-powered driver for it, or use special firmware which never goes above 50% or maybe 60% power.
For some lights, thatās worth doingā¦ But in a thrower, 219B doesnāt really make much sense.
Yeah. I donāt know much about it, but it sounds interesting. I sent him a quick test firmware just to help verify if the driver works, and to check if Iāve got the right pinoutsā¦ but I havenāt heard any more details yet. Just some initial hardware-enablement type stuff.
Meanwhile, Iāve been enjoying a KR1 W1 in 18350 form. Itās small enough to lose in my purse until I need it, and throws way farther than such a small light seems like it should be capable of. I leave it in lockout mode, with a manual memory level set somewhere practical, so I can just pull it out and use 2H for momentary at a useful brightness. The beam is similar to an Emisar D1S, but the light itself is only a fraction of the size.
There will be B35AR variant, but since B35AR does not work with DTP, it can only be mildly driven,
the brightness wonāt be that impressive comparing to the multiple LEDs flashlight.
Nice to hear that, Iām still deciding how much current to use for B35AR. What is the brightness when you drive it at 2A? And which optic/reflector for B35AR?
AM would be preferable since efficiency of a boost converter is higher at 1S>6V vs 1S>12V, but I assume AR was chosen so that the same 12V boost driver for XHP35 can be used.
Regarding current handling, on a MCPCB with high thermal conductivity dielectric and thick copper pours it is reasonably good (7.6W/m.K, 3oz pours):
But those high perf MCPCBs might be cost prohibitive.
Sorry Hank but iām still waiting for meassurement tool to come but itās bright as xhp35 to my eyes.
But AR is available only in R9050 version only. Wouldnāt it be better to get AM version which is R9080?
At the moment iām using B35AM in Convoy S21A with stock reflector and 3535 gasket which was trimmed a bit cause B35 is 3636 or 3737 format. Gonna try next weekend with TIR and report which is better.