. The Bell System technical journal . C <fR. -R>-[!^ i-C ,R2RpC L R2 r\ p (e) (f; Fig. 15— Impedance inversion. THE TRANSISTOR AS A NIOTWOKK KLEMENT 351 parameters of the transistor and the associatinl oxtcnial ciicuil willsatisfy the following cciuatioii 2ro Rp ^ 1\) eliminate non-essentials it will he assumed that r^ and /c are neg-hgibly small, and Ha « >,.. Then by a straightforward, hut lengthy,analysis the driving point impedance is found to be Z = R, p==LC + p| + l where L = XL Rf R + 4ro R = \Rp ^ X ro = Vc — Tm The circuit representing this impedance is shown in Fig. 15(e). S
. The Bell System technical journal . C <fR. -R>-[!^ i-C ,R2RpC L R2 r\ p (e) (f; Fig. 15— Impedance inversion. THE TRANSISTOR AS A NIOTWOKK KLEMENT 351 parameters of the transistor and the associatinl oxtcnial ciicuil willsatisfy the following cciuatioii 2ro Rp ^ 1\) eliminate non-essentials it will he assumed that r^ and /c are neg-hgibly small, and Ha « >,.. Then by a straightforward, hut lengthy,analysis the driving point impedance is found to be Z = R, p==LC + p| + l where L = XL Rf R + 4ro R = \Rp ^ X ro = Vc — Tm The circuit representing this impedance is shown in Fig. 15(e). Sincenegative elements are not convenient a final transformation is made tothe circuit shown in Fig. 15(f). COXCLUSION The distinctive properties of the transistor suggest careful considera-tion of a philosophy which regards the transistor as a circuit element tobe introduced at strategic points within a network. Initial work indicatesthat the judicious interspersion of transistors in a transmission networkmakes possible performance otherw
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
