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)Harmonics are periodic distortions of voltage, latest, or ability sine waves. Harmonics in electricity distribution devices are often caused by non-linear hundreds including switched manner dc energy provides and adjustable velocity motor drives.To be sure fairness,�