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, present, or electrical power sine waves. Harmonics in electrical power distribution programs tend to be because of non-linear hundreds which include switched method dc power provides and adjustable pace motor drives.Th?ng