The relative magnitude of various harmonic components with respect to the fundamental frequency
component, as calculated from equations (8.9) and (8.10), is tabulated in Table 8.1 up to
the 13th harmonic, and for saturation angles of 60◦, 90◦ and 120◦. It should be noted that when the
saturation angle is 90◦ there are no odd harmonics present. As the angle of saturation increases, the
harmonic content decreases: indeed, if α becomes π there will be no harmonics at all