The principles underlying radio communication (1922)
United States. National Bureau of Standards, Ould, Richard Sheldon, 1889-, United States. Army. Signal Corps · Washington, Govt. Print. Off. · leaf 460
Electron Tube.—Between the filamentand plate of a tube we may insert another piece of metal. Thisthird electrode inteiT>osed in the stream of electrons betweenfilament and grid is usually in the form of a metallic gauze ora grid of fine wires, and is generally called the grid. Atube which… … Fig. 256.—Construction of the three-electrode electron tube. 458 ELECTRON TUBES. three-electrode tube of American manufacture. The additionof the third electrode makes it possible to increase or decreasethe current between plate and filament through wide limits. Ifa voltage is impressed upon the…
Telegraph, Wireless · Radio
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