Harmonic spectrum
From Electrical Installation Guide
The harmonic spectrum is the representation of the amplitude of each harmonic order with respect to its frequency.
Figure M9 shows an example of harmonic spectrum for a rectangular signal.
Each type of device causing harmonics draws a particular form of current, with a particular harmonic content. This characteristic can be displayed by using the harmonic spectrum.
Fig. M9 – Harmonic spectrum for a rectangular signal U(t)
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