PRACTICAL MATLAB® FOR ENGINEERS PRACTICAL MATLAB

Direct Current and Transient Analysis 203

FIGURE 2.102

Transient overdamped plot (t > 0) of the source-free series RLC of Example 2.30.

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

0

0.2

0.4

0.6

0.8

1

time (sec)

i(t) versus t (overdamped case; R = 75 ohms)

current i(t) in amps

FIGURE 2.103

Transient critical damped plot (t > 0) of the source-free series RLC of Example 2.30.

0 1 2 3 4 5 6

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

time (sec)

i(t) versus t (critical damped case; R = 36 ohms)

current i(t) in amps

FIGURE 2.104

Transient underdamped plot (t > 0) of the source-free series RLC of Example 2.30.

− 6 − 4 − 2 0 2 4 6

− 10

− 5

0

5

10

time (sec)

i(t) versus t (underdamped case; R = 3 ohms)

current i(t) in amps