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The thermionic vacuum tube and its applications (1920)

Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 74

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he lower voltages. If the applied voltage is raised to excessive values gascan be liberated from the electrodes and then the current may again increaserapidly with increase in the plate voltage. (See Chapter V.) 50 PHYSICS OF THE THERMIONIC VALVE 51 various values of the voltage applied between the… … Anoble Vol+age Fig. 17. this line is seldom horizontal but usually slopes upward. Thispart of the curve corresponds to the condition when all the emittedelectrons are drawn to the anode as fast as they are emitted fromthe cathode. The corresponding current is, therefore, the satura-

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