TRang ch? L?ch thi ??u Tr?c ti?p Nh?n ??nh B?ng x?p h?ng Video M?ng xã h?iHarmonics are periodic distortions of voltage, existing, or ability sine waves. Harmonics in ability distribution systems are often brought on by non-linear masses including switched manner dc electricity materials and adjustable speed motor drives.Oscilloscope consumers kno