The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 269
designing the tube to operate on high voltages. This, however,requh-es ordinarily a d-c. source of high voltage. Tliis can be /S .-16 ~ J6 … obtained either by using a valve rectifjdng sj-stem, as explained inChapter VI, or by using d-c. generators. Such sources of high volt-age, direct current are usually not efficient. But the power obtain-able from a tube can, of course, also be increased by increasingthe space current; that is, by…
Telegraph, Wireless
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