Value

RMS value of a signal with a DC offset in MATLAB

RMS value of a signal with a DC offset in MATLAB
  1. Does DC offset affect RMS?
  2. What is the RMS value of a DC voltage?

Does DC offset affect RMS?

Therefore, the RMS value of a sine wave with a DC offset is given by the following expression. The immediate verification of the validity of this expression is the RMS value of a sine wave with zero DC offset. Indeed, when a0 = 0 V, the RMS level reverts back to equation (7), which is 0.707 of the sine amplitude.

What is the RMS value of a DC voltage?

RMS or root mean square current/voltage of the alternating current/voltage represents the d.c. current/voltage that dissipates the same amount of power as the average power dissipated by the alternating current/voltage. For sinusoidal oscillations, the RMS value equals peak value divided by the square root of 2.

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