Harmonics are periodic distortions of voltage, latest, or ability sine waves. Harmonics in ability distribution methods will often be a result of non-linear hundreds for instance switched mode dc electrical power provides and adjustable velocity motor drives.Gi?i m?i (bao g?m t?t c? gi?i nào có s? thay ??i, c?p nh?t m?i ho?c ?i?u ch?nh)Theo B? tr