b) Determine the input impedance of the transistor amplifier using the small signal equivalent model for the circuit above. i) Sketch the small signal model. i) Calculate the value of the input impedance. iii) Evaluate the influence of the coupling capacitor and the equivalent input impedance if they serve as a filter.

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b)
Determine the input impedance of the transistor amplifier using the small
signal equivalent model for the circuit above.
i)
Sketch the small signal model.
ii)
Calculate the value of the input impedance.
i)
Evaluate the influence of the coupling capacitor and the equivalent
input impedance if they serve as a filter.
RU
RC
C2
Vout
01
tu
C1
Vin
1u
RLOAD
75k
RE1
V1 VOFF = 0
VAMPL 10m
FREQ= 1000
AC = 10m
RL
RE2
CE
10u
Figure A2 Common Emitter Amplifier design
Transcribed Image Text:b) Determine the input impedance of the transistor amplifier using the small signal equivalent model for the circuit above. i) Sketch the small signal model. ii) Calculate the value of the input impedance. i) Evaluate the influence of the coupling capacitor and the equivalent input impedance if they serve as a filter. RU RC C2 Vout 01 tu C1 Vin 1u RLOAD 75k RE1 V1 VOFF = 0 VAMPL 10m FREQ= 1000 AC = 10m RL RE2 CE 10u Figure A2 Common Emitter Amplifier design
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