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 474
Fig. 265.—Practical forms of three-electrode electron tubes.470 PRACTICAL FORMS. 471 tended to operate on short wave lengths, the idea of the con-struction being to keep the connections to the grid and plate … Fig. 266.—Large transmitting tubes. as widely separated as possible to minimize the capacity be-tween them. In all these French tubes the filament is straight,the grid is a spiral wire surrounding the filament, and the plate 472 ELECTRON TUBES. is a cylinder surrounding both. Tubes Nos. 17 and 18…
Telegraph, Wireless · Radio
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