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Thread: Run-Time Plot - ARC AAA IR

  1. #1
    Farewell our Curmudgeon Administrator Roy's Avatar
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    Default Run-Time Plot - ARC AAA IR

    This runtime plot is for an ARC AAA withan Infra Red LED. This led generated no light that is visble to the eye, but the photocell is quite sensitive to detecting IR. at the end of 16 hours the AAA IR was still emitting infra red radiation.

    Equipment used is a photocell and a Radio Shact 22-805 multimeter with a PC interface that is using ScopeView software (V1.08).

    The vertical axis is in MA and the horizontal axis is 30 minutes per division.

    Be aware that you actual battery mileage may vary from that indicated by this runtime plot.


  2. #2
    Flashaholic*
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    Default Re: Run-Time Plot - ARC AAA IR

    Interesting. It appears that the IR ARC AAA is direct drive with only a resistor ballast [if any]. That makes sense because the Vf of an IR emitter is low enough to be powered directly by a single alkaline cell.

  3. #3
    Farewell our Curmudgeon Administrator Roy's Avatar
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    Default Re: Run-Time Plot - ARC AAA IR

    The steps in the plot occured when I turned the kitchen light off and on! [img]images/icons/grin.gif[/img]

  4. #4
    Flashaholic*
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    Default Re: Run-Time Plot - ARC AAA IR

    Definately not direct drive! The emitter is overdriven and identical to the photon LED (in fact, we bought all of our IR emitters from LRI-Photon).

    Peter

  5. #5
    Mostly MIA Administrator

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    Default Re: Run-Time Plot - ARC AAA IR

    Moved to reviews. Follow via the link up by your name.

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