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[bal-uh n] /ˈbæl ən/
noun, Electricity
a device for converting a balanced line into an unbalanced line and vice versa.
Origin of balun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for balun
  • The first balun provides common-mode rejection while the second is used in band-reject mode.
British Dictionary definitions for balun


(electronics) a device for coupling two electrical circuit elements, such as an aerial and its feeder cable, where one is balanced and the other is unbalanced
Word Origin
C20: shortened from bal(anced to) un(balanced transformer)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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balun in Technology

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.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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