What is Common mode choke coilsCommon mode choke coil to solve EMI noise problemsMurata Manufacturing Co., Ltd1 Structure Common mode (Noise) DLW/DLP Common mode choke coilMurata Manufacturing Co., Ltd2 Mechanism of Noise Suppression Differential Signal Current Differential Signal Current generates magnetic fields in opposite directions, so the impedance value is almost zero D+ D-Common Mode Noise Current The magnetic fields generated by the Common Mode Noise Current are in the same direction, so the impedance value is enhanced. D+ D-Murata Manufacturing Co., Ltd3 DC EMI FiltersTypical Application 1. For Differential Mode Signal Line USB, IEEE1394, LVDS 2. For Head Phone Line & Audio Amplifier Immunity Headphone cable and audio amplifier circuit 3. For Differential Mode Signal Line HDMI 4. Power Supply Line Murata Manufacturing Co., Ltd4 USB & Signal Wave form of Differential ModeUSB and differential mode signal waveform……
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