454
Practical MATLAB
® Applications for Engineers
50 V
sw closes at t = 0
R = 2 Ω
I (s)
L = 1 H
C = 0.2 F
FIGURE 4.95
Circuit diagram of P.4.30.
v (t ) = exp(−2t)
sw closes at t = 0
R = 1 Ω
I (s)
C = 1 F
FIGURE 4.96
Circuit diagram of P.4.31.
Write a MATLAB program that returns the following plots:
a. i(t) versus t
b. v R (t) versus t
c. v L (t) versus t
d. v C (t) versus t
P.4.31 Verify that the current i(t) in the circuit diagram shown in Figure 4.96 is given by
i t
I s
s
s
s
( )
( )
ϭ
ϭ ϩ ϩ
£
Ϫ1
2
3
2
{
}
assuming that v c (0) = 0.
Write a MATLAB program that returns the following plots:
a. i(t) versus t
b. v c (t) versus t
c. v R (t) versus t
P.4.32 Write a MATLAB program that returns the expressions and plots for the circuit
diagram shown in Figure 4.97 for
a. i(t) versus t
b. v R (t) versus t
c. v L (t) versus t
CRC_47760_CH004.indd 454
CRC_47760_CH004.indd 454
7/28/2008 12:26:25 PM
7/28/2008 12:26:25 PM