1.7: Exercises
- Page ID
- 94047
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2.7.1: Analysis Problems
1. For the circuit of Figure \(\PageIndex{1}\) determine the circulating current if the supply is 6 volts and the resistor is 10 k\(\Omega\).
Figure \(\PageIndex{1}\)
2. Repeat Problem 1 if the diode is inserted in the opposite orientation.
3. Given the circuit of Figure \(\PageIndex{2}\), determine the voltage drops across the resistors. The source is 12 volts, \(R_1\) = 4.7 k and \(R_2\) = 3.3 k.
Figure \(\PageIndex{2}\)
4. In Figure \(\PageIndex{3}\) determine the voltage drops across the resistors.
Figure \(\PageIndex{3}\)
5. Determine the LED current in Figure \(\PageIndex{4}\). Assume the LED barrier is 2.1 volts, the source is 5 volts and the resistor is 330 \(\Omega\).
Figure \(\PageIndex{4}\)
6. Repeat Problem 5 if the LED is inserted in reverse orientation.
7. Determine the resistor currents in Figure \(\PageIndex{5}\). The source is 15 volts, \(R_1\) = 8.2 k and \(R_2\) = 3.9 k.
Figure \(\PageIndex{5}\)
8. For the circuit of Figure \(\PageIndex{6}\), determine the resistor voltage. The source is 9 volts, the Zener potential is 5.1 volts and the resistor is 1 k.
Figure \(\PageIndex{6}\)
9. For the circuit of Figure \(\PageIndex{7}\), determine the resistor voltage. The source is 8 volts, the Zener potential is 3.3 volts and the resistor is 10 k.
Figure \(\PageIndex{7}\)
10. Determine the voltage across \(R_2\) in Figure \(\PageIndex{8}\) if the source is 9 volts, the Zener is 6.8 volts, \(R_1\) = 5.1 k and \(R_2\) = 33 k.
Figure \(\PageIndex{8}\)
2.7.2: Challenge Problems
11. Determine the resistor voltage in Figure \(\PageIndex{9}\) if \(E_1\) = 5 volts, \(E_2\) = 9 volts and \(R\)= 1 k.
Figure \(\PageIndex{9}\)
12. Determine the voltage across \(R_2\) in Figure \(\PageIndex{8}\) if the source is 9 volts, the Zener is 5.6 volts, \(R_1\) = 5.1 k and \(R_2\) = 3.9 k.
2.7.3: Design Problems
13. Determine a value for \(R\) in Figure \(\PageIndex{1}\) to set the current to 10 mA if the source is 5 volts.
14. Determine a value for \(R\) in Figure \(\PageIndex{4}\) that will set the LED current to approximately 20 mA if the source is 9 volts and the LED is a standard red type. Use a standard resistor value.
2.7.4: Computer Simulation Problems
15. Simulate Problem 9.
16. Simulate the circuit designed in Problem 14 for verification.