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The purpose of using RFI and EMI-related components such as contacts, fingerstock, and gaskets is to keep out or contain electromagnetic frequencies. RFI and EMI-related components are designed to reduce the transmission of interference between two or more pieces of electronic equipment. The most important factor when determining which components should be used is the environment they will be used in. Contacts, for instance, are used to connect electrical components, and are often designed to fit tightly against each other to prevent electrical leakage and interference.

Fingerstock are used for the same purpose as contacts, but are shaped and bent to produce electrical connections in order to reduce the amount of electromagnetic interference. Fingerstock are made from a variety of materials, including copper, aluminum, and stainless steel. They can also be coated in a variety of compounds such as rubber or plastics to protect against corrosion.

Gaskets are also used in RFI and EMI applications, and are designed to prevent electromagnetic interference from passing through a contact point or two pieces of equipment. Gaskets are usually made from a variety of materials such as rubber, neoprene, or silicone. They are often designed to fit tightly against one another, and are often coated with compounds such as silicone or rubber in order to protect against corrosion and weathering.

Other components used in RFI and EMI applications include filters, shields, and ferrite beads. Filters are used to reduce the amount of electromagnetic interference that passes through a contact point or two pieces of equipment. As there are many different types of filters, the type that should be used will depend on the environment and the particular application.

Shields are used to block out electromagnetic frequencies that are outside of a special frequency range. They are usually made from a variety of materials such as copper, steel, aluminum, or even a special composite material. The type of material and shape of the shield will depend on the application. They can be used individually or in combination.

Ferrite beads are used to absorb electromagnetic interference, and can be used in combination with other components. They are usually made from a variety of materials, such as iron, nickel, or cobalt. The type of ferrite material that should be used will depend on the application. They can be used to block out interference from a particular frequency range, or to absorb it.

In addition to components, other methods may also be used to reduce the transmission of electromagnetic interference such as routing and filtering. Routing is the process of routing the path of the interference in order to reduce its effect. Filtering is the process of reducing the amount of interference by filtering out the frequencies that are causing the interference.

Using the right combination of components and techniques is important in order to reduce the transmission of interference between two or more pieces of electronic equipment. Contacts, fingerstock, gaskets, filters, shields, and ferrite beads are all used in RFI and EMI applications, and should be carefully selected for the best performance.

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