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接地设计是光电设备电磁兼容设计的重要组成部分,好的接地能够保护设备和人身的安全,保证光电设备正常可靠工作。地线造成电磁干扰的主要原因是它具有阻抗和感抗特性,这些特性在某些情况下会导致地环路干扰和公共阻抗耦合等电磁骚扰。从地线的特性出发分析地线干扰的成因,提出抑制地线干扰,提高电路电磁兼容性的方法。
Grounding design is an important part of electromagnetic compatibility design of optoelectronic devices. Good grounding can protect equipment and personal safety and ensure the normal and reliable work of optoelectronic equipment. Grounding caused by electromagnetic interference is mainly due to its impedance and inductance characteristics, which in some cases will lead to ground loop interference and public impedance coupling electromagnetic harassment. From the characteristics of ground wire to analyze the causes of ground wire interference, put forward to suppress ground wire interference and improve the electromagnetic compatibility of the circuit.