Harmonics are periodic distortions of voltage, recent, or electrical power sine waves. Harmonics in energy distribution programs are frequently because of non-linear hundreds for instance switched method dc energy provides and adjustable speed motor drives.Tin t?c 24h Podcast Tu?n Vi?t Nam ??ng nh?p Chính tr? S? ki?n Xây d?ng ??ng ??i ngo?i Bàn