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led optical efficiency Vs forward current

Discussion in 'Electronic Design' started by [email protected], Sep 15, 2005.

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  1. Guest

    Hi all,
    in a led, is it possible that the optical efficiency (lumen/watt) is
    lower at the growing up of the forward current (If)? May you please
    explain me ?


    thank you


    mauri
     
  2. Ian Stirling

    Ian Stirling Guest

    Yes.
    For some types it is.
    For other types it is not.
    At high currents, more power is lost in the internal resistances.
     
  3. Guest

    Thanks Ian for your reply

    by
    mauri

    Ian Stirling ha scritto:
     
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