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grid bias

American  

noun

Electronics.
  1. the potential difference applied between a grid and the cathode of a vacuum tube.


grid bias British  

noun

  1. the fixed voltage applied between the control grid and cathode of a valve

"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

Etymology

Origin of grid bias

First recorded in 1925–30