磁珠
磁珠是一种被动组件，用来抑制电路中的高频杂讯。磁珠是一种特别的扼流圈，其成份多半为铁氧体，利用其高频电流产生的热耗散来抑制高频杂讯。磁珠有时也称为磁环、EMI滤波器、铁芯等。
最简单的磁珠是铁氧体的环状电感，导线可以绕在上面，也有夹扣形的磁珠，可以直接扣在缆在线。磁珠也有作为可以焊接在电路板上的电子组件，甚至有SMD封装的磁珠组件。
Ferrite bead
中文百科
英语百科
Ferrite bead 磁珠
A ferrite bead or ferrite choke is a passive electric component that suppresses high frequency noise in electronic circuits. It is a specific type of electronic choke. Ferrite beads employ high frequency current dissipation in a ferrite ceramic to build high frequency noise suppression devices. Ferrite beads may also be called blocks, cores, rings, EMI filters, or chokes.
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