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Chapter 8

Chapter 8. DC Circuits. Objectives. After completing this chapter, you will be able to: Solve for all unknown values (current, voltage, resistance, and power) in a series, parallel, or series-parallel circuit Understand the importance of voltage dividers

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Chapter 8

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  1. Chapter 8 DC Circuits

  2. Objectives • After completing this chapter, you will be able to: • Solve for all unknown values (current, voltage, resistance, and power) in a series, parallel, or series-parallel circuit • Understand the importance of voltage dividers • Design and solve for all unknown values in a voltage-divider circuit

  3. Series Circuits • In a series circuit:

  4. Series Circuits (cont’d.) Figure 8-1. Series circuit.

  5. Series Circuits (cont’d.) • In a series circuit:

  6. Parallel Circuits • In a parallel circuit:

  7. Parallel Circuits (cont’d.) • In a parallel circuit (cont’d.):

  8. Series-Parallel Circuits • Series formulas are applied to the series part of the circuit • Parallel formulas are applied to the parallel part

  9. Voltage Dividers • Sets the bias or operating point of active electronic components • Also used in scaling

  10. Voltage Dividers (cont’d.) Figure 8-11. Simple circuit.

  11. Voltage Dividers (cont’d.) Figure 8-12. Simple voltage divider.

  12. Voltage Dividers (cont’d.) Figure 8-13. Voltage divider.

  13. Voltage Dividers (cont’d.) Figure 8-14. Voltage divider application.

  14. Voltage Dividers (cont’d.) Figure 8-16. Real-world voltage divider.

  15. Figure 8-17. Analyzing the circuit.

  16. Voltage Dividers (cont’d.) Figure 8-18. Determining the resistor values.

  17. Wheatstone Bridge Figure 8-19. A Wheatstone bridge consists of two voltage dividers.

  18. Summary • The most commonly used circuits are the series, parallel, and series-parallel circuits • Voltage dividers sets the bias of active electronic components • A Wheatstone bridge measures unknown electrical resistance

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