铁氧体磁珠,作为电磁干扰抑制元件得到了广泛应用。本文介绍铁氧体磁珠及其工作原理,分析磁珠与电感的联系与区别,重点介绍片式电感与片式磁珠及其应用。并详细分析了磁珠在开关电源设计过程中的使用与选用。 Ferrite beads, as electromagnetic interference suppression components have been widely used. This article describes the ferrite beads and their working principle, the analysis of the relationship between beads and inductors and the difference, focusing on chip inductors and chip beads and its applications. The use and selection of magnetic beads in the design of switching power supply are analyzed in detail.