The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 175
100 150 Anode Volts Fig. 73. the operating range of the characteristic, when the tube functionsas an amplifier, the plate current can be expressed by the equation.^ I^^a{^ZE,+ ^Eg-{-e^ .... (3) where SJSp and llEg are the filament-plate and filament-grid1 H. J. VAN DER BiJL, Phys. Rev., Vol. 12, p.… … Ond VoltbFig. 74 This equation was determined empirically and is subject tocertain limitations. In the first place, it does not apply to thehorizontal part of the characteristic which gives the saturationcurrent, but only to that part which obtains when the filament ishot enough to emit more…
Telegraph, Wireless
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