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methode of mode switching?

  • starush Sunday, March 31, 2013 1:24 PM Reply
    How low-mode is working? By lowering the current on each LED or by switching some LED's off?
    I guess that lowering the current will be more power-conserving way.
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  • gasbag11 Top 10 Forum Poster Sunday, March 31, 2013 1:41 PM Reply
    Since nothing is mentioned in the overview, I would guess that like a lot of other lights, PWM (pulse width modulation) is used. It;s a way of making the light blink on and off so fast, that most people can't see it. Since the light is not constantly on, it uses less energy that way.
    NO! I don't know why DX screwed up the site so badly.
    Ask them.
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  • starush Sunday, March 31, 2013 1:47 PM Reply
    PWM often used on single LED lights. There also are many multi-LED lights on DX, wich used to switch some of LED's off.
    I don't like PWM because I can see this irritating blinking. I'm not sure but I prefer to guess that lowering the voltage is most advanced methode (that conserves energy, making energy consumption more effective, increases LED's lifespan and finally more pleasant for eyes).
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  • gasbag11 Top 10 Forum Poster Sunday, March 31, 2013 2:18 PM Reply
    I was just guessing because this seems to be the most common, and maybe cheapest way to reduce the output. All my 18650 lights have it, but thankfully I'm not sensitive to it. I have to point the light at a running fan to see if it appears to slow down in the lower modes.

    You can try an Error Report (below the overview),and DX will ask the supplier. Choose lacking info.
    NO! I don't know why DX screwed up the site so badly.
    Ask them.
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  • Archie68 Thursday, April 18, 2013 3:13 AM Reply
    All the LEDs are connected in series: to reduce brightness, current is lowered.
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  • starush Thursday, April 18, 2013 4:50 AM Reply
    @Archie68 have you disassembled this device?
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  • Archie68 Thursday, April 18, 2013 4:56 AM Reply
    Yes.
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  • starush Thursday, April 18, 2013 5:04 AM Reply
    Wow! @Archie68, would you be so kind to estimate the inner quality of this product?
    I mean:
    PCB photo;
    soldering;
    driver quality;
    photos of real beamshots on the road with bushes at sides.
    currents in low/high modes.

    This info will be very appreciated.
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  • starush Thursday, April 18, 2013 5:07 AM Reply
    I think only two grades of power is not enough for comfort raiding and battery economy. Does anybody know how to add one (or even better, two) "mid" modes between high and low?
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  • Archie68 Thursday, April 18, 2013 5:26 AM Reply
    @starush, I normally do that for every Chinese light I receive, but mostly in Russian language. Example of my review in English you can see e.g. here: http://www.bikeradar.com/forums/viewtopic.php?f=20005&t=12807034&start=1180

    As for SKU:192065, currently I don't have spare time to do it properly, but it's planned for near future. In short, quality of this light is surprisingly low.
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