BNC connector

Probably the most common coaxial connector design is the BNC (Bayonet Neill Concelman ), named after the developers Paul Neill ( Bell Labs) and Carl Concelman, the end of the 1940s were as a scaled down version of the C connector, based on a patent Octavio Salati, designed.

The interpretation of the acronym is controversial. Also Bayonet Nail Connector, Bayonet Navy Connector, British Naval Connector, Bayonet Nut Connector, Bayonet Naur Connector or Bayonet Connector standard are often called.

BNC connectors are coaxial connectors with a bayonet closure for high frequencies up to about 1 GHz, some up to 4 GHz, with a defined characteristic impedance of either 50 or 75 Ω.

The 50 - and the 75-ohm types are mutually pluggable. There are also reverse type. They are mainly used for radio and video technology.

An early version of Ethernet ( 10BASE2 ) used in the 80s and early 1990s BNC T-connector and a bus topology, which had to be provided at both ends with a 50 -ohm BNC terminator ( terminator).

A special form also BNC connectors with a characteristic impedance of 93 Ω for certain network applications ( ARCNET ) were produced.

The BNC technique has also been used for the transmission of weak DC and low AC currents and impulses in the laboratory, because the outer conductor shields electrical interference. The coaxial design also offers this protection against interference. For this reason, the connections of instruments such as oscilloscopes, frequency counters and function generators are normally executed in BNC Technology.