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Ferrite beads and chips are components in many electronic designs and products. In particular, ferrite beads are used to suppress electromagnetic interference (EMI). This type of component is commonly used in mobile devices, computers, and other electronic equipment and systems. The main application field and working principle of the ferrite chips and beads are discussed in this article.

What is Ferrite?

Ferrite is an oxide material comprising three components, iron oxide, nickel and cobalt. It has an electrical resistivity and magnetic permeability that make it well suited to its application in electronic circuits. The term ferrite derives from ferrica dura, meaning “hard steel”.

Application and Working Principle of Ferrite Beads

Ferrite beads are components that can be used to filter undesirable EMI, such as conducted and other types of emissions, including radio-frequency interference (RFI). These beads act as both a conductor and an absorber of electromagnetic waves. By connecting a ferrite bead between a source and an amplifier, the bead can act as an inductor or resistor, or a combination of both. The major application area of the beads is in radio frequency (RF) devices, such as radio receivers and transmitters. The beads can also be used to filter out high-frequency signals in computer systems and consumer electronics, such as TVs, digital satellite receivers, and others.

Working Principle of Ferrite Chips

Ferrite chips are an important component in electronic equipment and are used to reduce interference and distribute current evenly. The chips are composed of non-metallic ferrite material, which has magnetic permeability and electrical resistance. This helps to reduce the electromagnetic radiation generated from electronic components. In addition, the ferrite chips can also act as an inductor, capacitor, filter, amplifier, or transformer. They can be used in antennas to reduce signal loss and noise, by providing impedance matching. They can also be used as a potentiometer to control the amplitude and phase of the signal.

Conclusion

Ferrite beads and chips are widely used in the production of many different electronic equipment and systems. They are used to suppress EMI, filter out high-frequency signals, and to act as inductors, capacitors, filters, amplifiers, or transformers. Ferrite chips are also used to reduce interference and distribute current evenly. As a result, they are essential components in today’s electronic devices.

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