Part 4

Beyond Direct Current

Contents at a Glance

1. Chapter 1: Getting into Alternating Current
   1. What Is Alternating Current?
   2. Measuring Alternating Current
   3. Understanding Alternators
   4. Understanding Motors
   5. Understanding Transformers
   6. Working with Line Voltage
   7. Using Line Voltage in Your Projects
   8. Wires and Connectors for Working with Line Voltage
   9. Using Fuses to Protect Line-Voltage Circuits
   10. Using Relays to Control Line-Voltage Circuits
2. Chapter 2: Building Power Supplies
   1. Using a Power Adapter
   2. Understanding What a Power Supply Does
   3. Transforming Voltage
   4. Turning AC into DC
   5. Filtering Rectified Current
   6. Regulating Voltage
3. Chapter 3: Understanding Radio
   1. Understanding Radio Waves
   2. Transmitting and Receiving Radio
   3. Understanding AM Radio
   4. Understanding FM Radio
   5. Building a Crystal Radio
4. Chapter 4: Working with Infrared
   1. Introducing Infrared Light
   2. Detecting Infrared Light
   3. Project 25: A Simple IR Detector
   4. Creating Infrared Light
   5. Building a Proximity Detector
   6. Building a Common-Emitter Proximity Detector
   7. Project 26: A Common-Emitter Proximity Detector
   8. Building a Common-Collector Proximity Detector
   9. Project 27: A Common-Collector Proximity Detector