Exactly. Ultrafire 100 Hz PWM is annoying, but I doubt we need a poll to figure that out.
It’s interesting that people interpret “no PWM” to include “no visible PWM” though. What does “PWM” mean to people? More on that below.
I don’t see any “NoPWM” lights there. What I see there are four PWM-based lights. This confirms to me that the disagreement is about the definition of PWM, not people’s preferences about the physical properties of light.
Left to right, the PWM speeds on those lights are (approximately):
- Zebra: 5000 Hz
- Quark: 2200 Hz
- Eagle: 4500 Hz
- Malkoff: 1350 Hz
All four of those are too slow. I have the same Zebralight and EagleTac lights reppans used in that pic, and I can see the PWM on both during normal use. All four are examples of what I call “bad PWM”.
The v2 Pineapple driver is spec’d at 9000 Hz, which is ~2 to ~6 times faster than the premium-brand lights shown above. Not bad, but not what I’d call good either. Most BLF drivers run at around 14,000 to 18,000 Hz. The new Convoy C8 runs at 32,000 Hz. I find ~20,000 Hz to be ideal, preferably with a FET+1 or FET+N+1 driver for better efficiency.
I like true CC circuits for their efficiency (when done well), but a 2-channel or 3-channel PWM driver is close enough for my purposes. Here’s a qualitative comparison of 1-channel, 2-channel, and 3-channel PWM drivers and their efficiency as compared to an ideal CC driver: