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  2. Root mean square - Wikipedia

    en.wikipedia.org/wiki/Root_mean_square

    RMS, RMS or rms) of a set of numbers is the square root of the set's mean square. [1] Given a set , its RMS is denoted as either or . The RMS is also known as the quadratic mean (denoted ), [2] [3] a special case of the generalized mean.

  3. True RMS converter - Wikipedia

    en.wikipedia.org/wiki/True_RMS_converter

    True RMS provides a more correct value that is proportional to the square root of the average of the square of the curve, and not to the average of the absolute value. For any given waveform , the ratio of these two averages is constant and, as most measurements are made on what are (nominally) sine waves, the correction factor assumes this ...

  4. Root mean square deviation - Wikipedia

    en.wikipedia.org/wiki/Root_mean_square_deviation

    When normalizing by the mean value of the measurements, the term coefficient of variation of the RMSD, CV(RMSD) may be used to avoid ambiguity. [5] This is analogous to the coefficient of variation with the RMSD taking the place of the standard deviation .

  5. Light characteristic - Wikipedia

    en.wikipedia.org/wiki/Light_characteristic

    4.1 Single-flashing: Fl A flash is repeated regularly at a rate below 50 per minute. Fl G 5s 4.2 Long-flashing: L.Fl A light flash, duration of more than 2 seconds (long flash) is repeated regularly. L.Fl W 10s 4.3 Group-flashing: Fl(x) A group of a specific number of flashes are repeated regularly. Fl(3) R 15s 4.4 Composite group-flashing: Fl(x+y)

  6. Total harmonic distortion - Wikipedia

    en.wikipedia.org/wiki/Total_harmonic_distortion

    where V n is the RMS value of the nth harmonic voltage, and V 1 is the RMS value of the fundamental component. In practice, the THD F is commonly used in audio distortion specifications (percentage THD); however, THD is a non-standardized specification, and the results between manufacturers are not easily comparable. Since individual harmonic ...

  7. Ripple (electrical) - Wikipedia

    en.wikipedia.org/wiki/Ripple_(electrical)

    Various properties of ripple voltage may be important depending on application: the equation of the ripple for Fourier analysis to determine the constituent harmonics; the peak (usually peak-to-peak) value of the voltage; the root mean square (RMS) value of the voltage which is a component of power transmitted; the ripple factor γ, the ratio ...