78083099

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RFI and EMI – Contacts, Fingerstock and Gaskets

EMI and RFI shielding, also known as electromagnetic noise reduction or electronic countermeasures, is a must-have for many industries ranging from defense to consumer electronics. In order for electrical components to reliably operate, they must be protected from uncontrolled and unpredictable electromagnetic interference. In order to block such interference, engineers use a range of shielding technology including EMI contacts, fingerstock and gaskets. The 78083099 application field and working principle of these three technologies differ in many ways.

Contacts are used mainly to reduce the amount of RFI that can be picked up via conductive paths on objects. These are typically strips of metal, known as a turnofthe centuryring or braided wire, that are formed into an electrical contact. The contact can either be soldered onto a PCB – usually found on the power supply line of electronic components - or it can be placed in some mechanical or electrical form of connection such as a screw terminals, relay, or other form of interconnection. The contact itself acts as a barrier, blocking out RFI. The contact also acts as an electrical path, allowing the object or component to draw power from the contact or send data through it.

Fingerstock is a common form of EMI shielding material used in many industries. It consists of a metal or plastic sheet that is cut to fit around a component or object. The sheet is then placed around the object in order to block out external EMI and keep internal signals secure. The shape of the fingerstock can vary but the main component of it remains the same; the sheet is designed to fit tightly around the object so that it does not allow any interference to reach or escape the object.

Gaskets are another form of EMI shielding. Gaskets are strips of material that are used to create an enclosed space between two objects or components. This space acts as a barrier, blocking out EMI waves. Gaskets are generally used in devices that require a high level of protection from external signals, such as when a computer is working with sensitive data. Gaskets are usually made from a rubber or plastic material and must be compressed against the objects in order to form a complete seal.

The 78083099 application field and working principles of RFI, EMI and contacts, fingerstock and gaskets are all used to reduce and control the effects of unpredictable and uncontrolled EMI radiation on electrical components and objects. They are designed to create a physical barrier that acts as an insulator, preventing the passage of EMI from one component or object to another. By using these technologies, engineers can ensure that their devices and equipment remain safe and secure from interference.

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