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arc-back

[ ahrk-bak ]
/ ˈɑrkˌbæk /
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noun 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.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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