1

Exercise 1 In Fig. 1, run the analysis, and verify that

the overall voltage gain Av=V0/Vs=-25.74, input resistance at VS = 15.44K, output resistance at Vo = 9.752K

Fig. 1 CE amplifier with emitter resistor

2

PSpice BJT Model

PSpice CE amplifier with emitter resistor

3

Circuit Description by PSpice

4

Question What is the curve of Vo vs Vs when Vs

value increases from 0mV to 1mV with 0.01mV.

5

Exercise 2 In Fig. 2, run the analysis, and verify

that the overall voltage gain Av=V0/Vi=-1.939, output resistance at Vo = 1.95K

Fig.2 CS FET with Rs

6

PSpice FET Model

7

Circuit Description by PSpiceCommon-Source FET with RSVI 1 0 1mVG 2 3 1 3 2mSRD 2 3 40KRL 2 0 2KRS 3 0 500RG 1 2 10MEG.OP.OPT nopage.TF V(2) VI.END

8

Question What is the curve of IL vs Vi when Vi val

ue increases from 0mV to 1mV with 0.01mV?

9

Thinking….. What is the simulation results when the

Fig. 1 and Fig. 2 circuits are using real part for BJT and FET?