PRACTICAL MATLAB® FOR ENGINEERS PRACTICAL MATLAB

182 Practical MATLAB® Applications for Engineers

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vr _ 1 =

10 - 10*exp(-t)

********************************************

vr _ 2 =

10 - 10*exp(-2*t)

********************************************

vr _ 5 =

10 - 10*exp(-5*t)

********************************************

********************************************

The voltages across L=1

for R=1,2 and 5 (in Ohms) are:

********************************************

********************************************

vlr _ 1 =

10*exp(-t)

********************************************

vlr _ 2 =

10*exp(-2*t)

********************************************

vlr _ 5 =

10*exp(-5*t)

********************************************

See Figures 2.83 and 2.84.

FIGURE 2.83
Transient voltage plots across L of Example 2.24.

0 0.5 1 1.5 2 2.5 3

0

1

2

3

4

5

6

7

8

9

10

11

time t / sec

Voltages across L=1, for R=1, 2, and 5

voltage

R = 1 ohm

R = 2 ohms

R = 5 ohms