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Thread: led datasheets

  1. #1

    Default led datasheets

    when you read in led datasheets, supose 1500 mA, do they mean miliamperes in hours (mAH)? Thanks
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  2. #2
    Flashaholic* elgarak's Avatar
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    Default Re: led datasheets

    They mean mA -- current in milli-Amperes. wiki on Ampere

    Ampere-hours is used as a capacity number for batteries (can provide that many amperes for one hour, 1/2 that current for two hours etc.).

    Since current = charge / time [Ampere = Coulomb/s], current * time = charge [A* sec = coulomb].

    Ah is an electric charge!

    1 Ah = 3600 Coulomb. 1 mAh = 3.6 Coulomb. Cause 1 hour = 3600 sec.
    Last edited by elgarak; 02-14-2007 at 08:26 PM.

  3. #3
    Flashaholic* elgarak's Avatar
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    Default Re: led datasheets

    You can actually calculate how many electrons come out of the battery!

    1 Coulomb = 6.241506*10^18 electrons.

    Therefore: 2500 mAh AA battery stores: 2500*3.6*6.241506*10^18=5.6173554*10^22 electrons.

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