Note that all capacitors are large so that their impedance is negligible at signal frequencies of interest. npn equations active Ic Ise VBE/VT = IB = (Is/B)eVB VBE/VT IE = (Is/α)еVB VBE/VT Ic=ẞIB_IС = αIE B α α = B = B+1 1-α Ic α Im Υπ re To= VT 9m Im 550 VA 3. BJT amplifier The transistor in the circuit below has ẞ Early effect and use VT = 25 mV. 6 V = 100 and VBE = 0.7 V in forward bias. Ignore the Vsig 10 k 180 k w 009 1 k 6 V Vout a) Is this amplifier a common-emitter, common-base, or common-collector configuration? Determine the collector current and show that the transistor is biased in the active mode. b) Calculate the amplifier's small-signal gain A, the input resistance Rin, and the output resistance Rout. Don't include the 10 k resistance of the signal source or the 1 k load resistor. But do include the effect of the 180 k biasing resistor. c) Calculate the system gain; G = Vout/Usig.

Note that all capacitors are large so that their impedance is negligible at signal frequencies of interest. npn equations active Ic Ise VBE/VT = IB = (Is/B)eVB VBE/VT IE = (Is/α)еVB VBE/VT Ic=ẞIB_IС = αIE B α α = B = B+1 1-α Ic α Im Υπ re To= VT 9m Im 550 VA 3. BJT amplifier The transistor in the circuit below has ẞ Early effect and use VT = 25 mV. 6 V = 100 and VBE = 0.7 V in forward bias. Ignore the Vsig 10 k 180 k w 009 1 k 6 V Vout a) Is this amplifier a common-emitter, common-base, or common-collector configuration? Determine the collector current and show that the transistor is biased in the active mode. b) Calculate the amplifier's small-signal gain A, the input resistance Rin, and the output resistance Rout. Don't include the 10 k resistance of the signal source or the 1 k load resistor. But do include the effect of the 180 k biasing resistor. c) Calculate the system gain; G = Vout/Usig.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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