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Common Mode Chokes

Common mode chokes are an important class of electronic components used to filter noise, minimize interference, or provide additional AC impedance. Common mode chokes in particular have a wide range of implementations, one of the most common of which is the passive element capacitor-inductor (PLT10HH401100PNL) choke. The application field and working principle of this type of choke is discussed here.

Application Field

The PLT10HH401100PNL common mode choke is typically used to prevent interference between data/signals of different frequencies, a process commonly referred to as noise suppression. Other applications include filtering out unwanted signals, providing additional impedance for circuits, and providing EMI/RFI shielding. Due to its compact size and industry leading characterizations, the PLT10HH401100PNL is particularly well suited for use in today’s compact devices and equipment.

Working Principle

Common mode chokes work by creating an electrical shield through induction. They act as barriers that prevent current from flowing along an undesired path, while still allowing signals that are within the desired criteria to pass through. The inductance created by the choke serves to restrict the flow of undesired current while still allowing desired current to flow. The construction of the PLT10HH401100PNL common mode choke consists of a coil wrapped around a ferrite core, which further enhances the amount of inductance provided and prevents saturation from occurring.

The PLT10HH401100PNL’s inductance and impedance properties also mean that it is capable of providing minimal signal disturbances while still maintaining desirable signal transmission. This makes it an ideal choice for noise reduction and interference suppression applications such as power supplies, AC adapters, and switch mode power supplies.

Conclusion

The PLT10HH401100PNL common mode choke is an effective solution for a variety of specific noise and interference reduction applications. Its small size makes it a great fit for modern equipment, and its working principle ensures that it will properly filter out undesired signals while still allowing desired signals to pass through. For these reasons, the PLT10HH401100PNL will continue to be an important component in the development of equipment and devices.

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