Pentagrid

pentagrid

[′pen·tə‚grid]
(electronics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pentagrid

 

a seven-electrode electron tube with five grids: two are control grids, two are screen grids, and one grid acts as an auxiliary anode. The pentagrid is similar to a heptode. Pentagrids were used between 1930 and 1950 mainly for frequency conversion in superheterodyne receivers.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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