The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 142
see equation (24), Chapter IV).For example, for tungsten C has the value 1.8X 10~^ and for a typeof Western Electric filament the value 2.15X10^. It is therefore seen that the optimum voltage drop in therectifier depends upon the thermionic efficiency of the cathode,the power per cm.^ used for… … Anode Vol+cnge Fig. 45. rectifier but also in designing the three-electrode type of ther-mionic tube. We shall therefore make the above relationshipsomewhat clearer by considering the current-voltage character-istic. Let us start with a tube having certain values for theparameters appearing in…
Telegraph, Wireless
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