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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 402

An illustration from The thermionic vacuum tube and its applications, 1920, leaf 402
ial with respect to the plate. The electrons passingthrough the grid and striking the plate cause the emission ofsecondary electrons from the plate and these are then drawnover to the positive grid. The circuit arrangement for this case isshown in Fig. 230. If ro is a resistance placed in the plate… … Fig. 230. the origin of coordinates, the sloping part ABC of the character-istic can be represented by the equation Iv= —mEn= (3) where Vp is the plate resistance of the tube. Substituting equation(2) into this equation we obtain, Eb rr,— rr (4) Differentiating Ip with respect to Eb, and…

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