Since noise is emitted from the DC power supply cable of the AC adapter,
this noise must be suppressed. The DC power supply line contains both differential
mode noise and common mode noise. Both mode noises need to be suppressed.
The GND and bottom metal plate are first connected together. The NFM55P
Series (Chip Solid "EMIFIL®"), and the BLMxxP
Series (Chip Ferrite Bead) are installed for differential mode noise
suppression. The DLW5BS(AH) Series
(Chip Common Mode Choke Coil) is installed for common mode noise suppression. |
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