共模扼流圈解决EMI噪音问题

What is Common mode choke coilsCommon mode choke coil to solve EMI noise problems

共模扼流圈 解决EMI噪音问题

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Structure /结构

Common mode (Noise) 共模噪音

DLW/DLP

共模扼流圈 Common mode choke coil
Murata Manufacturing Co., Ltd

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Mechanism of Noise Suppression

共模扼流圈降噪原理
Differential Signal Current 差分信号电流
差分信号电流产生 相反方向的磁场, 故阻抗值几乎为零
D+ D-

Common Mode Noise Current 共模噪音电流
共模噪音电流产生 的磁场方向相同,故 阻抗值是加强的.
D+ D-

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DC EMI Filters

直流电磁干扰 滤波器
Typical Application 典型应用
1. For Differential Mode Signal Line USB, IEEE1394, LVDS 差分信号线USB, IEEE1394, LVDS 2. For Head Phone Line & Audio Amplifier Immunity 耳机线和音频放大电路 3. For Differential Mode Signal Line HDMI 差分信号线HDMI 4. Power Supply Line 电源线

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USB & Signal Wave form of Differential Mode

USB 和差分模式的信号波形