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HARMONICSHARMONICS220. What are harmonics?This material is reproduced with the permission of Underwriters Laboratories, Inc., © 1995. (Dave Dini-Underwriters Laboratories) The word harmonics was originally used to signify the appealing sounds obtained by touching various points along a vibrating string. When several of these musical vibrations are at frequencies that are integral multiples of a major frequency or tone, a musical chord is produced. Piano or guitar music is a good example of this. By definition, a harmonic is a sinusoidal component of a periodic wave which has a frequency that is an integral multiple of the fundamental frequency. To the electrical engineer, harmonics are voltages and current…
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Terrell Croft; Frederic P. Hartwell; Wilford I. Summers: American Electricians' Handbook, Sixteenth Edition. HARMONICS, Chapter (McGraw-Hill Professional, 2013), AccessEngineering