RMS voltage and peak value
Calculator for calculating the rms and peak value of a sinusoidal voltage
This function calculates the rms or peak value of a sinusoidal voltage.
The voltage can be entered as RMS or peak value. The input of the peak value is preset. Change the setting if you want to enter an effective value.
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Formulas for rms and peak voltage
The rms value is defined as a DC voltage value with the same thermal effect as the specified AC voltage With sinusoidal alternating current it is
\(\displaystyle U_{rms}=\frac{U_p}{\sqrt{2}}\)
The conversion from effective value to peak value is shown in the following formula
\(\displaystyle U_p = U_{rms} · \sqrt{2}\)
Moving coil measuring devices can only measure the half-wave mean value, but show the effective value due to the corresponding calibration of the scale. If a non-sinusoidal value is measured, the measured values will be incorrect.
The mean value of the pure sinusoidal voltage is always 0 volts. If the voltage is superimposed by a direct voltage, the mean value corresponds to the superimposed direct voltage.
Legend
\(\displaystyle U_p\)
Peak voltage
\(\displaystyle U_{rms}\)
Effective voltage
AC functions
Alternating voltage valuesAlternating voltage and time
Frequency and wavelength
Alternating voltage value and angle
Frequency and periodic time
RMS value of a sinusoidal oscillation
RMS value of a sinusoidal oscillation with offset
RMS value of a sine pulse (half-wave rectification)
RMS value of a sine pulse (full-wave rectification)
RMS value of a square wave voltage
RMS value of a square pulse
RMS value of a triangle voltage
RMS value of a triangular pulse
RMS value of a sawtooth voltage
RMS value of a sawtooth pulse
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