Pressure Switch Troubleshooting and Repair
A pressure switch is a form of switch that operates an electrical contact when a certain fluid pressure is reached at its input. The switch can be designed to make contact either when the pressure increases or when the pressure decreases. Pressure switches are widely used in industry to automatically monitor and control systems that use hydraulic fluids.
Another type of pressure switch detects mechanical force; for example, a pressure-sensitive mat is used to automatically open doors in commercial buildings. Such sensors are also used in security alarm applications such as pressure sensitive floors.
More information about pressure switches
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Electric Motors and Drives: Fundamentals, Types and Applications
Comprehensive reference work on electric motors and drives for non-specialists that closes the gap between mathematics and theory.
Mechanical Design of Electric Motors
The rapid increase in energy consumption and emphasis on environmental protection have posed challenges to the motor industry, as has the design and manufacture of highly efficient, reliable, cost-effective, energy-saving, quiet, precisely controlled and long-lasting electric motors.
The book “Mechanical Design of Electric Motors
Mechanical Design of Electric Motors
The importance of electric motors is well known in various engineering disciplines. The book provides comprehensive coverage of various types of electric motors including DC motors, three-phase and single-phase induction motors, synchronous motors, general purpose motors, AC servo motors, linear induction motors and stepper motors. The book covers all details of DC motors, including torque equation, back electromotive force, characteristics, starter types, speed control methods and applications.
The book also covers various testing methods for DC motors such as Swinburne test, brake test, deceleration test, field test and Hopkinson test. The book also explains three phase induction motors in detail. It covers rotating magnetic field generation, construction, working principle, effect of slip, torque equation, torque ratios, torque-slip characteristics, losses, power flow, equivalent circuit, effects of harmonics on performance, pie chart and applications. This chapter also covers the discussion of the inductor generator. The book teaches various starting methods and speed control methods of three-phase induction motors. The book contains the explanation of various single phase induction motors. The chapter on synchronous motors provides a detailed discussion of construction, working principle, behavior under load, phasor diagram analysis, Vee and inverted-Vee curves, swing, synchronous capacitor and applications. The book also teaches various special machines such as single-phase commutator motors, general purpose motors, AC servo motors, linear induction motors and stepper motors. The book uses clear, understandable language to explain each topic. The book provides a logical method to explain various complicated topics and step-by-step methods to simplify understanding. Each chapter is well supported with necessary illustrations, self-explanatory diagrams and a variety of solved tasks. The book explains the philosophy of the subject, which makes the understanding of the concepts very clear and makes the subject more interesting.
Motor Starting and Control Primer: An introduction to the starting techniques and control of electric motors
Whether you are an electrical engineer looking to refresh your knowledge of engine starters, a time-strapped student new to the subject, or an interested individual with an hour to spare, this book is the right place to start. Steven McFadyen shares his expert knowledge of engine starting in a clear and accessible way, without time-consuming ramblings or self-smiling discussions. Complete with wiring diagrams and thorough explanations of the most common engine starting techniques - and challenges - this book is an essential reference. It offers something for anyone who wants to learn new things while helping practicing electrical engineers design and implement reliable and functional motor starters.
