The transistor amplifier in Fig. P7.48 is biased with a current source I and has a very

Chapter 7, Problem 7.48

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The transistor amplifier in Fig. P7.48 is biased with a current source I and has a very high . Find the dc voltage at the collector, VC. Also, find the value of re. Replace the transistor with the T model of Fig. 7.26(b) (note that the dc current source I should be replaced with an open circuit). Hence find the voltage gain vc/vi . 10 k I 0.2 mA 3 Figure P7.48

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