Just received my first 6p. I plan to convert it to a LED running on a 17670 and a buck driver. So it's important to minimize tail switch electrical resistance to get flat regulation. To my surprise, I measured 240 mΩ when the switch is twisted on; and 450 mΩ when pressed momentary on. These are much higher than any flashlight switch I'd seen! :shrug:
I looked into the switch and can't understand why it has such a high resistance. It's basically a single piece of alum with a spring fitted in the center. I managed to measure the spring and it's around 140 mΩ. This is certainly less than ideal. But where is the rest of the resistance from? Grease on the contact surface?
If possible I want to take the switch out of the tail and see if anything can be done to improve its performance. But I can't figure out how. Does anyone know?
I'd appreciate any input on this.
p.s. Originally posted over at LED. Hope I'll have better luck here.
I looked into the switch and can't understand why it has such a high resistance. It's basically a single piece of alum with a spring fitted in the center. I managed to measure the spring and it's around 140 mΩ. This is certainly less than ideal. But where is the rest of the resistance from? Grease on the contact surface?
If possible I want to take the switch out of the tail and see if anything can be done to improve its performance. But I can't figure out how. Does anyone know?
I'd appreciate any input on this.
p.s. Originally posted over at LED. Hope I'll have better luck here.
