120220-0202 RF/IF and RFID

RFI and EMI - Contacts, Fingerstock and Gaskets

RF interference (RFI) and electromagnetic interference (EMI) can cause a lot of problems in today\'s high-tech world. They can interfere with the operation of electronic devices, as well as affecting the data they transmit. To reduce the risk of RFI and EMI, special contacts, fingerstock and gaskets are used.

Contacts

Contacts are the devices used to establish a connection between two electric circuits. They can be used to connect two pieces of equipment, or to connect to ground or any other reference point. The material used for contacts must be able to withstand a significant amount of current. Copper is one of the most common materials used, and is generally very reliable.

Fingerstock

Fingerstock is a type of contact that is mechanically compressed to form a conductive path between two electrical contacts. It is similar to a spring, and is often configured to form a circular gap that allows for the passage of current. The gap is filled with a conductive material, usually silver or gold, and the contact is then compressed to provide the connection. Fingerstock contacts are commonly used on printed wiring boards (PWB), as well as in many other applications.

Gaskets

Gaskets are used to protect and insulate electrical connections from the environment. They provide a barrier between the air and the contact, reducing the risk of RFI and EMI interference. Gaskets can be made from a variety of materials, including rubber, foam, plastic, or metal. In general, they should be able to withstand both heat and cold, as well as any chemicals used in the vicinity.

Application Field and Working Principle

Contacts, fingerstocks and gaskets are widely used in today\'s technology. They can be found in computers, cell phones, medical equipment, and industrial machines. In computer systems, the contacts are typically used to connect the circuit board to the case, while the fingerstocks and gaskets are used to isolate the circuit board from the case, reducing RFI and EMI interference. In cell phones, the contacts are used to connect between the internal components, while the gaskets help protect against the environmental conditions. In medical equipment, the contacts are generally used to connect the instruments to the patient, while the fingerstocks and gaskets protect them from external interference. Finally, in industrial equipment, the contacts are generally used to connect electrical components, while the gaskets provide protection from heat, moisture, and other environmental factors.