EMI(Electro Magnetic Interference) 電磁干擾
EMC (Electromagnetic Compatibility)电磁兼容
EMC =EMI EMS
EMI包括传导、辐射、谐波等等。
this section of IEC 1000-3 is concern with the limitation of voltage fluctuations and flicker impressed on the
public low-voltage system.注意“impress on"是施加而不是被施加,所以谐波和闪烁是设备对外的,而不是外界对设备的,所以是EMI,不是EMS。