?ng d?ng 123B là n?i t?ng h?p các t?a game h?p d?n Cách t?i 123B cho ?i?n tho?iHarmonics are periodic distortions of voltage, present-day, or electricity sine waves. Harmonics in electric power distribution methods will often be brought on by non-linear masses for example switched manner dc energy supplies and adjustable pace motor drives.Th?ng