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arc-back



Pronunciation: (ärk'bak"), [key]
n. Electronics.
an undesirable phenomenon, occurring in rectifier tubes, in which current flows in the reverse direction, from anode to cathode, as a result of arcing, limiting the usable voltage of the tube.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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