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Power Consumption

Discussion in 'General Electronics Discussion' started by grelc, May 18, 2013.

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  1. grelc


    Apr 11, 2013
    Hi all,

    I am trying to find the easiest way to measure the power consumption from the following 3.5" lcd screen, I have seen claims of 0.7W and also claims of 2W, so I am trying to find out for myself.

    I have a multimeter and probes, but not sure if I can measure this easily with what I have. I would really appreciate some help.

  2. BobK


    Jan 5, 2010
    The specification in the ad say:

    Power Consumption:0.53W

    To measure, simply place an Ammeter in line with the +12V power input, and measure the current when operating. The current * 12 is the power consumption.

  3. grelc


    Apr 11, 2013
    Can I do this without a "benchtop" power supply, i.e. I have a 12v power supply for the unit which runs from the mains wall socket. Really would appreciate some help on if this is possible and how I can do this.

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