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Watts chart

Discussion in 'General Electronics Discussion' started by DanteCBR, May 7, 2016.

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  1. DanteCBR

    DanteCBR

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    Apr 25, 2012
    Does anyone have a chart for LED watts to actual watt usage..

    I know that a 900watt LED lamp is around 385w in usage..

    Does any one have a chart or could even explain how 900w can be 385w.. I thought a watt was a watt..
     
  2. Arouse1973

    Arouse1973 Adam

    5,164
    1,078
    Dec 18, 2013
    Hello. Watts is Watts. It energy used per second. Where did you get the two Watt figures from?
    Adam
     
  3. Anon_LG

    Anon_LG

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    Jun 24, 2014
    Do you mean the conversion ratio of input electrical power to useful light output power? See here. Scroll to led. Your light is apparently the theoretical maximum operating efficiency of LEDs! (~43%)

    But this may not be what you are looking for.
     
    Arouse1973 likes this.
  4. davenn

    davenn Moderator

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    Sep 5, 2009
    I suspect the OP doesnt understand they are referring to the incandescent lamp compared to a LED

    so ... the light output from a 385W LED lamp is equiv to a 900W incandescent lamp

    same thing with compact fluoro's compared to incandescent lamps


    so it's the equiv light output NOT power used


    Dave
     
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  5. DanteCBR

    DanteCBR

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    Apr 25, 2012
    Has Dave said, that could be the issue, i must be missing something..

    I have a friend who likes to smoke a bit of wacky backy (and it genuinely is a friend, i dont even drink alcohol, let alone smoke weed). After a few years of buying dodgy stuff from dealers, he decided to grow his own. (Only 2 plants). He's using CFL lamps at the moment but wants to go to LED to save on electricty (light and ventilation).

    He shown me on the forum that whats advertised as a 900w LED lamp actually uses near 400watts in electric
     
  6. DanteCBR

    DanteCBR

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    Apr 25, 2012
  7. Externet

    Externet

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    Aug 24, 2009
  8. davenn

    davenn Moderator

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    Sep 5, 2009
    and with that, we will close the thread

    the forum doesn't want to be involved in illegal activities


    Dave
     
    hevans1944 and Anon_LG like this.
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