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screen grid

noun, Electronics.
1.
a grid placed between the anode and the control electrode in a vacuum tube, usually maintained at a fixed positive potential.
Origin
1925-1930
1925-30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for screen grid

screen grid

noun
1.
(electronics) an electrode placed between the control grid and anode of a valve and having a fixed positive potential relative to the grid. It acts as an electrostatic shield preventing capacitive coupling between grid and anode, thus increasing the stability of the device Sometimes shortened to screen See also suppressor grid
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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