Question: 7.8 (a) In a BJT, we increase the base doping by a factor of 10 and halve the base width. Calculate approximately by what factor

7.8 (a) In a BJT, we increase the base doping by a factor of 10 and halve the base width. Calculate approximately by what factor the collector current changes in the normal active mode, assuming that everything else stays the same. (b) In a certain BJT, the emitter doping is 100 times greater than the base doping, the emitter width is 0.1 times the base width, and we can assume both base and emitter widths to be much shorter than the carrier diffusion lengths Ln and Lp. What is the emitter injection efficiency? What is the base transport factor? (c) Suppose Ln = Lp. Now assuming that both emitter and base are much wider than the diffusion lengths, what is the emitter injection efficiency and base transport factor

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