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Practice Problem 7.5 Determine i, i.. and v, for all i in the circuit shown in Fig. 7.22. Assume that the switch was closed for a long time. It should be noted that opening a switch in series with an ideal current source creates an infinite voltage at the current source terminals. Clearly this is impossi- ble. For the purposes of problem solving, we can place a shunt resis- tor in parallel with the source (which now makes it a voltage source in series with a resistor). In more practical circuits, devices that act like curent sources are, for the most part, electronic circuits. These circuits 18 A will allow the source to act like an ideal current source over its oper- ating range but voltage-limit it when the load resistor becomes too large (as in an open circuit). 3 2 www 1=0 IH Figure 7.22 For Practice Proh 75

Practice Problem 7.5 Determine i, i.. and v, for all i in the circuit shown in Fig. 7.22. Assume that the switch was closed for a long time. It should be noted that opening a switch in series with an ideal current source creates an infinite voltage at the current source terminals. Clearly this is impossi- ble. For the purposes of problem solving, we can place a shunt resis- tor in parallel with the source (which now makes it a voltage source in series with a resistor). In more practical circuits, devices that act like curent sources are, for the most part, electronic circuits. These circuits 18 A will allow the source to act like an ideal current source over its oper- ating range but voltage-limit it when the load resistor becomes too large (as in an open circuit). 3 2 www 1=0 IH Figure 7.22 For Practice Proh 75

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Practice Problem 7.5 Determine i, i.. and v, for all i in the circuit shown in Fig. 7.22. Assume that the switch was closed for a long time. It should be noted that opening a switch in series with an ideal current source creates an infinite voltage at the current source terminals. Clearly this is impossi- blc. For the purposes of problem solving, we can place a shunt resis- tor in parallel with the source (which now makes it a voltage source in series with a resistor). In more practical circuits, devices that act like curent sources are, for the most part, electronic circuits. These circuits 18 A will allow the source to act like an ideal current source over its oper- ating range but voltage-limit it when the load resistor becomes too large (as in an open circuit). 3 2 www 1=0 IH Figure 7.22 For Practice Proh 75.
Transcribed Image Text:Practice Problem 7.5 Determine i, i.. and v, for all i in the circuit shown in Fig. 7.22. Assume that the switch was closed for a long time. It should be noted that opening a switch in series with an ideal current source creates an infinite voltage at the current source terminals. Clearly this is impossi- blc. For the purposes of problem solving, we can place a shunt resis- tor in parallel with the source (which now makes it a voltage source in series with a resistor). In more practical circuits, devices that act like curent sources are, for the most part, electronic circuits. These circuits 18 A will allow the source to act like an ideal current source over its oper- ating range but voltage-limit it when the load resistor becomes too large (as in an open circuit). 3 2 www 1=0 IH Figure 7.22 For Practice Proh 75.
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