Figure 2.3 shows the circuit diagram of a typical npn BJT common emitter amplifier. The values of RB1-30 kOhm, RB2=10.XY kOhm, Rc-3.XY kOhm, Ic=2.XY mA and Vcc=24 V. If the transistor current gain ß = 50 determine using the full analysis and assuming VBE = 0.7 V the value of RE, hence identify the location of the Q-point (Ic, VCE, IB and VBE). Now sketch the AC circuit model of this amplifier and determine the value of the ac open circuit voltage gain Av and the ac short circuit current gain Ai. (Assume that Vth = 26 mV). Vin R81 Cin RB2 www Rc VB RE + Vcc Vc Cout VE ww HT Vout Ce lout x=1 y=7

Figure 2.3 shows the circuit diagram of a typical npn BJT common emitter amplifier. The values of RB1-30 kOhm, RB2=10.XY kOhm, Rc-3.XY kOhm, Ic=2.XY mA and Vcc=24 V. If the transistor current gain ß = 50 determine using the full analysis and assuming VBE = 0.7 V the value of RE, hence identify the location of the Q-point (Ic, VCE, IB and VBE). Now sketch the AC circuit model of this amplifier and determine the value of the ac open circuit voltage gain Av and the ac short circuit current gain Ai. (Assume that Vth = 26 mV). Vin R81 Cin RB2 www Rc VB RE + Vcc Vc Cout VE ww HT Vout Ce lout x=1 y=7

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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Question

c)
Figure 2.3 shows the circuit diagram of a typical npn BJT common emitter
amplifier. The values of RB1-30 kOhm, RB2=10.XY kOhm, Rc-3.XY kOhm,
Ic=2.XY mA and Vcc=24 V. If the transistor current gain 3 = 50 determine
using the full analysis and assuming VBE = 0.7 V the value of RE, hence
identify the location of the Q-point (Ic, VCE, IB and VBE). Now sketch the AC
circuit model of this amplifier and determine the value of the ac open circuit
voltage gain Av and the ac short circuit current gain Ai. (Assume that Vth =
26 mV).
Vin
RB1
Cin
lin
RB2
-10
Rc
VB
RE
+ Vcc
Vc Cout
VE
www li
Figure 2.3
Vout
Ce
¡out
x=1
y=7

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