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, current, or power sine waves. Harmonics in electricity distribution methods are often attributable to non-linear masses like switched method dc ability supplies and adjustable pace motor drives.Instantly capture, watch a