sog_sniper
Newly Enlightened
- Joined
- Oct 26, 2012
- Messages
- 14
Thank you very much Selfbuilt for the prompt response...Another query from a newbie, what is the purpose of using PWM???
Short-version, it is a simple way to reduce the output of a light, by reducing the amount of time the light is on (i.e., variable amount of time full-power "on", in pulses of a fixed frequency - thus, pulse-width modulated). Due to the phenomenon of persistence of vision, this will be perceived as dimmer light (assuming the frequency is high enough).Thank you very much Selfbuilt for the prompt response...Another query from a newbie, what is the purpose of using PWM???
looks scaryThis looks handsome, indeed...
Short-version, it is a simple way to reduce the output of a light, by reducing the amount of time the light is on (i.e., variable amount of time full-power "on", in pulses of a fixed frequency - thus, pulse-width modulated). Due to the phenomenon of persistence of vision, this will be perceived as dimmer light (assuming the frequency is high enough).
The competing method known "current-control" actually involves driving the emitter at lower levels (which is more efficient, as the emitter is more efficient at lower currents). But current-control is difficult to do stably at lower outputs, and will generally result in some tint-shifting of the LED (due to the varying drive levels). Continuously-variable lights are almost always PWM-controlled, and some defined-level levels use PWM as well (especially for low output levels). See the electronics subforum for a greater discussion.
I'm waiting for a price on one of these bad boys!!This looks handsome, indeed...
Image taken from Klarus' website.
The XT10 and XT11 actually use the same tailcap and switch. It sounds like your XT11 sample is a lot more sensitive than your earlier XT10. I don't know if this a general change over time, or simply natural variation in sensitivity levels among all the switches. But it means that you would swap the tailcap from your XT10 on to your XT11, to keep the sensitivity you are used to.However the wost design flaw is the fact that the strobe is set off too easily when I don't want it to go off.... simply by using the larger button/switch.... if my thumb even slightly touches the smaller mode button/switch.... the strobe goes off! Terrible.
This is absolutely not an issue with my XT10.
This looks handsome, indeed...
Image taken from Klarus' website.
The XT10 and XT11 actually use the same tailcap and switch. It sounds like your XT11 sample is a lot more sensitive than your earlier XT10. I don't know if this a general change over time, or simply natural variation in sensitivity levels among all the switches. But it means that you would swap the tailcap from your XT10 on to your XT11, to keep the sensitivity you are used to.
Great suggestion, thank you very much.
Unfortunately I just tried as you suggested removing the tailcap and switch from the XT10.... I was able to remove the initial aluminum threaded ring... however once I got down to the switch, I have no idea how I can/how to remove it as there are not two 'notches' to put a tool into it and un-screw it as is on the first aluminum ring.
I can't take a chance and force anything as someone wants to buy XT10 from me and I don't want to break anything by accident.
I wish I could change them as you suggested, that would probably solve the issue... I'm just not very tech/mechanical savvy when it comes to taking these apart.
Yes, that's what I meant - you just exchange the whole tailcap between the two lights. The only potential issue is that you might have a slight mismatch in the anodizing colours.LOL - you don't have to take it apart...I think you just swap them.
Yes, that's what I meant - you just exchange the whole tailcap between the two lights. The only potential issue is that you might have a slight mismatch in the anodizing colours.
I wouldn't recommend disassembling the XT10/11 switch itself, as it is a little more complicated than most (due to the dual switch design).
Good, glad it worked out for you.Works perfectly now... no strobe firing off accidentally due to the highly sensitive smaller mode button/switch which came on the XT11.
As you suggested, I just now simply exchanged the tail caps (XT10 to the XT11) .... PERFECT!! Problem solved!!
'TEEJ'.... boy do I feel like a dope, trying to exchange the actual 'switches' LoL!!
Lucky that the two are the exact same anodized color!
There was a # (X05542) printed on the XT10 cap while no # on the XT11 cap, but absolutely no big deal.
'selfbuilt', thanks a million for your help, very much appreciated.
Works perfectly now... no strobe firing off accidentally due to the highly sensitive smaller mode button/switch which came on the XT11.
Great light, nice white LED light color.
I purchased the optional more 'aggressive' strike bezel which is kind of fun.. LoL.
Now if only they would design the XT11 so the plastic anti-roll ring wouldn't be oddly "very loose" and spin around like a pin wheel.
But at least the other issue is now gone/fixed!
Thanks again!
It's interesting to read about the problems with the removable grip ring. My XT11 came today and it has a metal ring.
Mine is plastic.... and I got it last month from Going Gear.