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Vcc in figure 13.18 is changed from 12V to 15V. If Vi = 1 mV, calculate vo & io. Let β0- 100 Vcc 12 V 300 kΩ 100 k- 22 kQ 100k Signal 160kΩ 13 k2 Ub Smube Rt U SmUbe Figure 13.18 (a) Common-emitter amplifier circuit employing a bipolar transistor. (b) ac Equivalent circuit for the common- emitter amplifier in part (a). The common-emitter connection should now be evident. (e) ac Equivalent circuit with the bipolar transistor replaced by its small-signal model. (d) Final equivalent circuit for ac analysis of the common-emitter amplifier

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