Applying KVL in the loop in the circuit of Figure 5.110,
we get the following form:
100
0105100
∠°−−−−=
jiiji()
.
or
i
jj
=
+−
==
100
10510
100
5
20
A
V
Th
= (5 −j10) i
= (5 −j10) 20
= 100 −j200 V
To find Z
Th
, we consider the circle across open-circuited
terminals A and B by short-circuiting the voltage source as
shown in Figure 5.111.
Zjj
jj
jj
jj
j
Th
=−
=
−
+−
=
−
=
+
=+
10
51
0
10
51
0
10
51
0
50100
5
10050
5
20
2
()
()
jj10
Therefore, Thevenin’s equivalent circuit is shown in
Figure 5.112.
Now, accord-
ing to the maximum power transfer theorem,
Z
L
= Complex conjugate of Z
Th
= (20 −j10) Ω
Example 5.29 Determine the maximum power
delivered to the load ...
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