Sometimes the noise is there due to improper ground. I have found that to be true with several lights. Once the grounding areas are cleaned and tightened, the noise went away. Sometimes it's necessary to "mod" the ground, to get a good ground. PWM can also do it and it may just be that.
That’s what I thought, but how can 2 different tailcaps change the functionality of the driver? How can 1 tailcap be a single-mode, and the other a 3-mode? Surely a tailcap is just a switch, something which breaks the circuit, or completes it? :~
Ah, sorry, I didn't even notice that it came with two switches. There must be a microcontroller in the 3-mode tailcap that regulates current. Interesting design.
Very interesting. The switch must contain a MCU controlling PWM for the modes. The driver is regulating 100% current and the MCU in the switch is changing the PWM value to give you modes.
I’ve always thought that putting the driver at the back would be better, than you can isolate the head and LEDs from the rest of the flashlight, and run that thing till the aluminum gets red hot >) No throttling because of weak driver components.
But I guess each design has got its own pro’s and con’s.