boylistad

1182 ⏐⏐⏐ SYSTEM ANALYSIS: AN INTRODUCTION
+
E1 = 1 V ∠0°
–
I 1
h i
+
4 × 10
–
–4
1 k�
E2 hrE2 50I 1
h f I 1
1
h o
40 k�
FIG. 26.54
Hybrid equivalent model to be investigated under loaded conditions using PSpice.
E 2
VL and Av ���� E1 E1
so that VL � AvE1 � (�99.01)(1 V �0°)
� 99.01 V �180°
The schematic representation has been established as shown in Fig.
26.55. Note that both a CCCS and a VCVS must be used along with
the ac source VSIN. Most of the construction and setting up of the various
components through the Property Editor dialog box is quite
straightforward. However, you must be very careful when setting up the
connections for the controlling variables. When you cross a line, be
absolutely sure that a small circular dot does not appear where you
cross the line; otherwise, a connection is being made. Simply click the
wire in place before crossing the line, and then click the wire construction
again after crossing the line.
FIG. 26.55
Using PSpice to analyze the network of Fig. 26.54.
+
E 2
–
R L = 2 k�
+
V L
–