Transient Response of Circuits Using Laplace Transform 353
Taking the Laplace transform, the equation is written as follows:
or
4
1
10
80
4
1080
6
6
Is
Is
ss
s
Is
s
()
()
()
+=
+
=
-
or
4100000080s
s
Is
s
+
=()
or
450000080
()
()
sI
s
+=
or
Is
s
Is
s
()
()
()
=
+
=
+
80
4500000
20
500000
Taking the inverse Laplace transform, we get the following form:
it
L
s
it
e
t
()
()
=
+
=
-
-
20
1
500000
20
1
500000
A
Example 8.17 Determine the current in the circuit given
below at t≥ 0. The initial current i(0) = 1.
Solution: Given at t= 0 and i(0) = 1
Applying KVL, we get the following equation for the given
circuit.
VR
itL
di
dt
ti
=×
+-
()()
()
0
Taking Laplace transform, we obtain the equation as follo ...
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