T.Huy XSMB: Gi?i ??c bi?t k?t qu? x? s? Mi?n B?c ???c bao nhiêu v?y m?i ng??i ?i!Harmonics are periodic distortions of voltage, existing, or electrical power sine waves. Harmonics in electricity distribution units are often a result of non-linear hundreds for instance switched mode dc electrical power provides and adjustable pace motor drives.Anh