They do not accurately measure any other waveform shape. So-called “true” RMS meters in the past have depended on some sort of power measurement to derive the correct RMS value. Now that calculational ...

The RMS value of a time dependent voltage or current is based on the simple concept of equality of power dissipation; however, its theoretical calculation or instrument implementation may not be easy.

Often, rms is described as a measure of equivalent heating value, relating it to the amount of power dissipated by a resistive load driven by the equivalent DC value. For example, a 1-Vpk sine ...