Electricity and Controls for HVAC-R

Stephen L. Herman was an electrician and proficient instructor with over 30 years of practical experience, and was known for his reader-friendly approach. A seasoned author, Mr. Herman wrote leading books on electricity and mathematics that are popular with students and instructors alike. For two decades, Mr. Herman served as lead instructor for the Electrical Technology Curriculum at Lee College in Baytown, Texas, where he received an Excellence in Education Award from the Halliburton Education Foundation. He also taught at Randolph Community College in Asheboro, North Carolina, for nine years and helped pioneer an electrical curriculum for Northeast Texas Community College in Mount Pleasant, Texas. His additional publications include "Electric Motor Control," "Electricity and Controls for HVAC/R," "Industrial Motor Controls," "Understanding Motor Controls," "Electronics for Electricians," "Alternating Current Fundamentals," "Direct Current Fundamentals," "Electrical Studies for Trades," "Electrical Principles," "Experiments in Electricity For Use with Lab Volt Equipment," "The Complete Laboratory Manual for Electricity" and "Practical Problems in Mathematics for Electricians."

• Part I: BASIC ELECTRICITY.1. Atomic Structure.2. Electrical Quantities and Ohm's Law.3. Measuring Instruments.4. Electrical Circuits.5. Electrical Services.6. Wire Size and Voltage Drop.7. Inductance.8. Capacitance.Part II: CONTROL CIRCUITS.9. Schematic and Wiring Diagrams.10. Developing Wiring Programs.Part III: MOTORS.11. Split-Phase Motors.12. The Shaded-Pole Induction Motor.13. Multispeed Motors.14. Three-Phase Motor Principles.15. The Squirrel-Cage Induction Motor.16. The Wound Rotor Induction Motor.17. The Synchronous Motor.18. Brushless DC Motors.Part IV: TRANSFORMERS.19. Isolation Transformers.20. Autotransformers.21. Current Transformers.Part V: CONTROL COMPONENTS.22. Overloads.23. Relays, Contactors, and Motor Starters.24. The Solid-State Relay.25. The Control Transformer.26. Starting Relays.27. Variable-Speed Motor Control.28. The Defrost Timer.29. The Thermostat.30. Pressure Switches.31. The Flow Switch.32. The Humidistat.33. Fan-Limit Switches.34. The Oil-Pressure Failure Switch.35. Solenoid Valves.36. The Short-Cycle Timer.37. Methods of Sensing Temperature.38. Gas Burner Controls.39. Oil Burner Controls.Part VI: TROUBLESHOOTING USING CONTROL SCHEMATICS.40. Introduction to Troubleshooting.41. Room Air Conditioners.42. A Commercial Air-Conditioning Unit.43. Heat-Pump Controls.44. Packaged Units: Electric Air Conditioning and Gas Heat.Part VII: ICE MAKER AND REFRIGERATION CONTROLS.45. Household Ice Makers.46. Commercial Ice Makers.47. Refrigeration Controls.Part VIII: SOLID-STATE DEVICES.48. Resistors and Color Codes.49. Semiconductor Materials.50. Diodes.51. Light-Emitting Diodes (LEDs) and Photodiodes.52. The Transistor.53. The Unijunction Transistor.54. The Silicon-Controlled Rectifier and GTO.55. The Diac and SBS.56. The Triac.57. The Operational Amplifier.Part IX: SOLID-STATE CONTROLS.58. Programmable Logic Controllers.59. Programming a PC.60. Analog Sensing for Programmable Controllers.Glossary.Index.

Part I: BASIC ELECTRICITY. 1. Atomic Structure. 2. Electrical Quantities and Ohm's Law. 3. Measuring Instruments. 4. Electrical Circuits. 5. Electrical Services. 6. Wire Size and Voltage Drop. 7. Inductance. 8. Capacitance. Part II: CONTROL CIRCUITS. 9. Schematic and Wiring Diagrams. 10. Developing Wiring Programs. Part III: MOTORS. 11. Split-Phase Motors. 12. The Shaded-Pole Induction Motor. 13. Multispeed Motors. 14. Three-Phase Motor Principles. 15. The Squirrel-Cage Induction Motor. 16. The Wound Rotor Induction Motor. 17. The Synchronous Motor. 18. Brushless DC Motors. Part IV: TRANSFORMERS. 19. Isolation Transformers. 20. Autotransformers. 21. Current Transformers. Part V: CONTROL COMPONENTS. 22. Overloads. 23. Relays, Contactors, and Motor Starters. 24. The Solid-State Relay. 25. The Control Transformer. 26. Starting Relays. 27. Variable-Speed Motor Control. 28. The Defrost Timer. 29. The Thermostat. 30. Pressure Switches. 31. The Flow Switch. 32. The Humidistat. 33. Fan-Limit Switches. 34. The Oil-Pressure Failure Switch. 35. Solenoid Valves. 36. The Short-Cycle Timer. 37. Methods of Sensing Temperature. 38. Gas Burner Controls. 39. Oil Burner Controls. Part VI: TROUBLESHOOTING USING CONTROL SCHEMATICS. 40. Introduction to Troubleshooting. 41. Room Air Conditioners. 42. A Commercial Air-Conditioning Unit. 43. Heat-Pump Controls. 44. Packaged Units: Electric Air Conditioning and Gas Heat. Part VII: ICE MAKER AND REFRIGERATION CONTROLS. 45. Household Ice Makers. 46. Commercial Ice Makers. 47. Refrigeration Controls. Part VIII: SOLID-STATE DEVICES. 48. Resistors and Color Codes. 49. Semiconductor Materials. 50. Diodes. 51. Light-Emitting Diodes (LEDs) and Photodiodes. 52. The Transistor. 53. The Unijunction Transistor. 54. The Silicon-Controlled Rectifier and GTO. 55. The Diac and SBS. 56. The Triac. 57. The Operational Amplifier. Part IX: SOLID-STATE CONTROLS. 58. Programmable Logic Controllers. 59. Programming a PC. 60. Analog Sensing for Programmable Controllers. Glossary. Index.