Electricity and electronics for HVAC

Electricity and electronics for HVAC

[...]... Companies, Inc Click here for terms of use This page intentionally left blank Electricity and Electronics for HVAC This page intentionally left blank Chapter 1 Introduction to Electricity Performance Objectives ■ Understand how matter and electricity are related ■ Understand how liquids, solids, and gases are similar, yet different ■ Understand how atoms, electrons, protons, and neutrons are all related... production of electricity ■ Understand how electricity is put to work in the electric circuit ■ Understand how switches control the flow of electricity Introduction to Electricity Electricity is as old as the universe But knowledge about it is relatively new Early humans were aware of electricity in the form of lightning They learned of its power when they saw it starts fires and kills people and animals... greatest uses of electricity is in the production of ice and cooling for human comfort Refrigeration and air conditioning rely exclusively on the ability of electricity to pump a fluid or gas through a system Electricity is also used to control the temperature in heating, air-conditioning, and refrigeration systems Matter and Electricity The name electricity implies the importance of the almost weightless,... Delta and Wye Delta connection (⌬) Wye connection (Y) Delta and wye summarized Review Questions 123 124 124 126 126 126 126 127 Chapter 8 Inductors and Transformers 129 Performance Objectives Changing Inductance Self-Inductance Mutual Inductance Inductive Reactance Measuring XL Power in an Inductive Circuit Uses for Inductive Reactance Transformers Mutual inductance in a transformer Iron-core transformer... Iron-core transformer Construction Types of iron-core transformers Voltage Transfer Step up, step down Turns ratio Power Transformers Audio Frequency and Radio Frequency Transformers Autotransformers Transformer Losses Inductive Circuits Special handling Utilizing the Inductive Delay Review Questions Chapter 9 Capacitors and Capacitive Reactance Performance Objectives The Capacitor How the Capacitor Works... ends of a permanent magnet Note the north and south poles shown as N and S experiments, Benjamin Franklin is credited with forming the theory of positive and negative charges It was another 80 years, though, before someone discovered that there is a relationship between magnetism and electron flow Electricity s Future The effects of the knowledge and use of electricity were profound Difficult tasks became... chip both for sequencing and for protection from accidental damage Most of these programmable controllers provide instructions and technical bulletins They are numerous, and each has its own approach to solving a given problem This book will make it possible for you to understand these instructions and improvements Future technicians need to deal with the fact that change is inevitable, and that they... Greeks for the province of Magnesia in Asia Minor, where the stones were first found Today, the power of this stone is called magnetism These discoveries led to extensive studies of magnetism and static electricity (see Figs 1-1 and 1-2) Other people studied electricity and magnetism during the sixteenth century and later in the nineteenth century Some of these people have electrical terms named for them... Conditioning and Refrigeration Performance Objectives Industries that Employ Air-Conditioning and Refrigeration Mechanics Job Qualifications The Future Pay and Benefits Teaching as a Career Sources of Additional Information Review Questions Index 371 355 355 359 361 361 361 364 365 365 367 367 369 Preface This book is intended to provide an introduction to the basic principles of electricity and electronics. .. machines and robots Automation is the use of machines that are controlled by other machines and devices instead of people It is another step in technical progress It makes possible more things faster and better Automation and robots create more jobs and a need for more skilled people Trained people are needed to design, build, and maintain electrical equipment One of the greatest uses of electricity . Welding Licensing Exam Study Guide and Air Conditioning and Refrigeration. Copyright © 2007 by The McGraw-Hill Companies, Inc. Click here for terms of use. Electricity and Electronics for HVAC Rex Miller Professor. to Electricity 1 Static Electricity and Magnetism 2 Electricity 2 Electricity s Future 3 Matter and Electricity 4 Solids, gases, and liquids 4 Atom 5 Electrons, protons, and neutrons 6 Properties. 139 Turns ratio 139 Power Transformers 140 Audio Frequency and Radio Frequency Transformers 140 Autotransformers 141 Transformer Losses 142 Inductive Circuits 144 Special handling 145 Utilizing the