[muRata] EMC Solutions: Noise Suppression Examples

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Noise from the digital circuit is conducted to the handset cable and radiated from the cable.

Since the noise is common mode noise, the BLM series (Chip Ferrite Bead) or DLW5BS(AH) Series (Common Mode Choke Coil) is installed on all four lines to suppress the noise.

Installing a common mode choke coil provides similar noise suppression effects.

Noise Emission Status
Noise Suppression Model

Installing EMI filters on the Clock Line
Installing EMI filters on Oscillator Output
Installing EMI filters on Bus Lines
Installing EMI filters on the DC Power Supply Input and Lines
Installing EMI filters on Interface Cable Ports
Installing EMI filters on Signal Lines to the Handset
Installing EMI filters on Motor Signal Lines