4207-001

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EMI/RFI Filters are essential components in the current electrical systems. 4207-001 is one component type in the filter network that boasts a wide range of applications and robust working principle.

The nature of the 4207-001 filter is a combination of a Ferrite core inductor, wire-winding resistor and an IEC connector. Usually used in the power supply and signal lines, the components are suitable for both EMI/RFI noise suppression and signal integrity control.

In terms of application, the 4207-001 filter mainly targets in the field of electronic products, such as consumer electronics, communications equipment, medical devices, automotive systems, and even aerospace equipment, to name a few.

When connected in the circuit, 4207-001 filter operates at a relatively high frequency to achieve the desired attenuation level, or signal resistance, as required by the application. It works in a basic type of EMI/RFI filter network, where an inductor is connected in series with the signal line and a capacitor in parallel.

The current flowing in the circuit experiences transformer action at the ferrite core inductor, due to the magnetic flux across the core. This flux weighs down the amplitude of the current, thereby reducing the amount of EMI generated. Additionally, the ferrite core inductor and wire-winding resistor functions together as an inductor-resistor (LR) filter network where a capacitor is connected in parallel with the signal line to reject high-frequency noise.

In conclusion, 4207-001 is a reliable EMI/RFI filter component that has a wide range of applications and a robust working principle. It combines the transformer action of the ferrite core inductor with inductor-resistor (LR) filter network to achieve proper performance.

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