Theo dõi ?i?m nóng c?a Everbright Futures 1228: Th??ng H?i và thi?c ti?p t?c t?ngHarmonics are periodic distortions of voltage, recent, or ability sine waves. Harmonics in ability distribution programs are frequently because of non-linear masses for example switched method dc ability supplies and adjustable velocity motor drives.To make sure fai