21124373 RF/IF and RFID

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Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI) are environmental problems that can affect electronic equipment if not properly controlled. This type of interference can cause erratic equipment operation, distorted data, and poor performance. Contacts, Fingerstock and Gaskets are components that are designed to control RFI and EMI. When used in combination, these components provide an effective method to protect a circuit against the effects of environmental interference.

Contacts

Contacts are metal components designed specifically to provide electrical continuity between two surfaces. They provide physical separation between electrical components or ground potentials. In the case of RFI and EMI, contacts provide an electrical shield or barrier that helps prevent interference from entering or exiting the equipment. Common materials used for contacts are: silver, copper, brass, aluminum, nickel and stainless steel. The proper selection of contact materials depends on the particular application and the environment in which the contacts will be used.

Fingerstock

Fingerstock is a metal strip designed to create an EMI or RFI barrier. The strip is typically made of a metal such as copper, steel, or aluminum and is often bent into a U-shape in order to provide more surface area. It is typically mounted around the perimeter of a circuit board or between two components. Fingerstock helps to prevent the spread of interference by absorbing or reflecting electrical energy.

Gaskets

Gaskets are rubber or plastic components designed to form a barrier and reduce the effects of RFI and EMI. They are typically used in combination with a metal fingerstock in order to provide greater shielding effectiveness. Gaskets are commonly found on electronic equipment such as computer enclosures, telephones, and other precision instruments. They are available in a variety of sizes and shapes and are designed to fit a variety of applications. Gaskets help prevent electrical signals from entering or leaving the equipment and can also be used to absorb vibration.

The use of contacts, fingerstock and gaskets provide an efficient way to control RFI and EMI. When used together, they provide an effective method to protect sensitive electronic components from the harmful effects of environmental interference. It is important to select the proper materials for each application in order to ensure optimum performance. When used properly, these components can help extend the life of your equipment and provide reliable operation.

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