balun
(BALanced UNbalanced) A device that connects a balanced line to an unbalanced line; for example, a twisted pair to a coaxial cable. A balanced line is one in which both wires are electrically equal. In an unbalanced line, such as a coax, one line has different properties than the other.
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| Balun |
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| The BNC connector on the left connects to coaxial cable. The screw connectors on the right connect to telephone style twisted wire pairs. (Image courtesy of Black Box Corporation.) |
| (electronics) | balun - A transformer connected between a balanced
source or load and an unbalanced source or load. A balanced
line has two conductors, with equal currents in opposite
directions. The unbalanced line has just one conductor; the
current in it returns via a common ground or earth path. | |