然而，由于开关电源工作在高频状态，其产生的瞬态脉冲包含有能够发射电磁干扰(emi)的的高频谐波。

However, SMPS operate at high switching frequencies, and the associated transient pulses are full of high frequency harmonics that may cause electromagnetic interference (EMI).

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共模扼流圈的高频特征极大地影响了电磁干扰（EMI）滤波器抑制传导EMI噪声的性能。

The high frequency parasitic parameters of common mode(CM) choke significantly influence the performance of electromagnetic interference(EMI) filter for conducted EMI suppression.

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高频开关电源是严重的电磁干扰源，很多情况下需对其安装emi电源滤波器。

Switch power of high frequency is serious electromagnetic interference (EMI) source, so EMI source filter usually should be added in switch power.

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