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Thread: A Look at Common Flashlight Switches Losses

  1. #1
    Flashaholic* kosPap's Avatar
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    Default A Look at Common Flashlight Switches Losses

    greetings all!

    Some time ago, I made a hi-amp triple DIY module but performance was dissapointing. yet it clocked well "on the bench".

    So today I made some measurements of common switches' performance by measuring current draw on 2 PWM Direct Drive modules



    In short the well known Forward Click switch did a bit better than expected.Disappointing were the McClickie and the Solarforce L2D hi amp reverse switch.

    And here is my test setup. Yes, I know there are many variables involved, but the setup was kept constant as shawn. And i took care to jiggle with the crocodile clip contact getting the best posible of.



    regards, kostas

  2. #2
    Flashaholic* DIWdiver's Avatar
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    Default Re: A Look at Common Flashlight Switches Losses

    Interesting. The two 'high amp' switches are the best and almost the worst.

    Hmm... Two of the switches show higher current than with no switch. That should not be possible.

    It may not be a huge effect, but there's definitely something a bit fishy about that data.
    Last edited by DIWdiver; 02-07-2020 at 06:03 PM.

  3. #3
    Flashaholic* kosPap's Avatar
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    Default Re: A Look at Common Flashlight Switches Losses

    The two 'high amp' switches are the best and almost the worst.
    A title does not make for good performance. Actually the Solarforce one was too advertised....

    Indeed there is this "No Switch" discrepancy. Which may be a difference in wire contact.
    Yet, even the biggest discrepancy is close to 5%, which is considered the statistical margin of error in general.

  4. #4

    Default Re: A Look at Common Flashlight Switches Losses

    Wouldn't it be better to measure the voltage drop across the switch as well as current draw? Assuming all other connections are good and no dodgy jumpers.

    Could the weird results be the voltage drop across the switch interfering with the controller, like it's going into hiccup mode as the supply starts off high on the start of each cycle but drops as current is drawn through the high resistance switch?

  5. #5

    Default Re: A Look at Common Flashlight Switches Losses

    I remember someone at BLF measuring different resistances from click to click.
    Could you try that kosPap?

  6. #6

    Default Re: A Look at Common Flashlight Switches Losses

    Kaidomain has two forward clickies listed on their website, can I ask which was the one you tested?

  7. #7
    Flashaholic* kosPap's Avatar
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    Default Re: A Look at Common Flashlight Switches Losses

    I hope it is not too late for an answer....
    I measured the square ones.

    The oblong ones seem very much like the convoy FWD Clickies (more on this is a new topic)

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