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.

screen grid

noun

1. See suppressor grid
   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 toscreen See also suppressor grid

Word History and Origins

Origin of screen grid¹

First recorded in 1925–30