inquiry on what is difference bw RMS & peak

Discussion in 'General Electronics Chat' started by bramin19, Feb 7, 2011.

  1. bramin19

    Thread Starter New Member

    Feb 7, 2011
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    what is the difference between 40 volts DC and 40 volts RMS and 40 volts avg signals?
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    RMS stands for Root Mean Square. It is as much a mathematical concept as an electronic one. With a sine wave RMS is 0.707 of peak voltage. RMS voltage will heat a resistor (dissipate wattage) as an equivalent DC voltage of the same value.


    However, this is for a sine wave. For a square wave RMS equals peak voltage. For other waveforms the number will be different.

    http://www.opamp-electronics.com/tutorials/measurements_of_ac_magnitude_2_01_03.htm
     
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