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logo Examples of Noise Suppression in Printers


Installing EMI filters on Motor Control Lines

Noise generated from the motor is conducted to the main board and other cables via the motor cable and radiated.

EMI filters are installed on the motor side to suppress the noise.

When EMI filters cannot be installed on the motor side, NFM21C Series (Chip Solid "EMIFIL®") are installed on the motor cable connections. However, the noise suppression effect is lower than that obtained by installing EMI filters on the motor side.
Noise Emission Status
Noise Suppression Model
   
Improving the GND
Installing EMI filters on the Parallel Interface
Installing EMI filters on the
DC Power Supply Input and Lines
Installing EMI filters on Motor Control Lines
Installing EMI filters on the Clock Line
Installing EMI filters on Bus Lines
Installing EMI filters on the IC Power Supply Line
   
Examples of Noise Suppression for USBs

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