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RFI and EMI - Contacts, Fingerstock and Gaskets

Radio-Frequency and Electromagnetic Interference (RFI/EMI) shielding is an integral part of any modern electronic system. Electro-magnetic interference, or EMI, is a form of interference caused by changes in the electromagnetic environment. RFI is a type of EMI that is caused by a malfunction or electrical interference caused by an external/nearby source. In order to prevent EMI/RFI interference, contact surfaces such as contacts, finger stocks and gaskets are used to shield the system or device.

Contacts

Contacts are conductive surfaces that have been designed to make a reliable electrical connection. In the context of RFI/EMI shielding, contacts help to reduce or eliminate the transmission of interference from one part of the system to another. This is achieved by controlling the flow of electrons through the contact, allowing it to reduce interference between components. Contacts are typically constructed from materials such as brass, copper or stainless steel and are available in a variety of shapes and sizes.

Fingerstock

Fingerstock is a type of flexible contact that is used to protect electrical circuits from static charges and EMI/RFI interference. It is typically made from materials such as copper, brass or steel and is designed to be used in a variety of different applications. Fingerstock can be easily installed into existing systems and provides a reliable, low-cost solution for interfacing with the equipment.

Fingerstock is ideal for applications where there is a need to reduce static interference as it easily conforms to awkward shapes and requires minimal maintenance. It can also be formed into a variety of shapes such as conductive gaskets or contact springs, allowing it to be integrated into a wide range of designs.

Gaskets

Gaskets are used in a wide range of applications to provide a secure and reliable seal that prevents the transmission of EMI/RFI interference and static charges. They are typically constructed from materials such as conductive elastomers, neoprene, PTFE and polytetrafluoroethylene (PTFE) and are designed to be used in combination with other components such as contacts and finger stocks.

Gaskets are available in a variety of shapes and sizes and can be custom designed to suit the individual needs of the application. For example, they can be designed to fit into awkward spaces or to provide a more efficient seal than standard components. Additionally, they provide an effective solution for reducing noise in high frequency applications.

In conclusion, contacts, fingerstocks and gaskets are integral components when it comes to ensuring the reliable operation of any modern electronic system. By providing a secure connection and shielding the system from EMI/RFI interference, they help to improve the performance and reliability of the system.

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