here are my notes… visible on a scope, or in a photo, is something I track, not just visible by eye… make your own judgment whether circuit flicker matters to you…
I’d love to see some size and beamshot comparisons if anyone out there owns both yet. I’ve heard mixed reviews on the SC600II, someone even said it isn’t hugely brighter than the SC52 (should be about double the brightness, definitely noticeable?) Cheers.
ToyKeeper
My H51w doesn’t have PWM. My L3 L10-219 doesn’t have PWM. But the SC52 does. And while trying other lights, I found that the JETBeam RRT01 has something like PWM, but instead of a square wave at 2% duty cycle, it seems to use a steady sine wave.
Anyway, just wondering if anyone else can confirm that the SC52 has PWM on L1 with a 14500 battery.
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ToyKeeper
I’m not sure my color perception is worth listening to… I have weird eyes. Traditional 2700K incandescent lights make my eyes hurt, but computer screens and cool white fluorescent lights are comfortable for me. I’m biased toward relatively cool tints. However, that said, the best light I’ve seen so far was a L3 L10-219 with Nichia 219 4500K 92CRI emitter. To me, it looks just about right. Compared to the 219, the SC52 looks pale and green and the H51w looks rather uncomfortably yellow. The sec…
the L3 L10-219 and RRT01 have become my most often-used lights, with the SC52 now mostly just sitting on my nightstand for use as a night light or mood light.
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You can see the archived poll results on the Wayback Machine: https://web.archive.org/web/20221220093741/https://budgetlightforum.com/t/-/72632
ToyKeeper
I haven’t really used my RRT01 much lately. It’s a sweet little light, but I find that it’s too wide to hold comfortably, I compulsively check and re-check to make sure it’s turned all the way off, and I apparently prefer having known output levels. I use fixed levels to gauge how night-adjusted my eyes are, and to get an idea how long I can expect the battery to last, but the RRT just leaves me wondering.
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Jetbeam RRT-01 vs Sunwayman V11R (1xCR123A/RCR) Head-to-head Comparison...
Welcome to my head-to-head comparison of the JetBeam RRT-01 to the Sunwayman V11R. :party: This quick shoot-out comparison will NOT be a full review of the RRT-01 (I previously reviewed the V11R at the time of launch). Instead, this "mini-review"...
PWM/Strobe
There is no sign of PWM on either light – both are either current-controlled, or use a frequency that is too high for my oscilloscope to detect.
I did detect some high frequency signal noise on the RRT-01 oscilloscope traces, but this was not visible: