Control circuits    

Xem 1-20 trên 119 kết quả Control circuits    
  • The control system for a star delta contactor is sequence circuit. The star contactor and delta contactor are interlocked relative to each other with a ‘either - or’ condition. Switching from ‘star’ to ‘delta’ is done automatically by means of a time relay. In the circuit above, the star contactor is energised first, then the mains contactor. Circuits in which the mains contactor is energised first, followed by the star contactor, are also common.

    ppt14p vanquynh261 09-10-2010 112 31   Download

  • There is a large gap between the theory of electron flow, magnetic fields and that of troubleshooting electrical equipment and control circuits in the plant. In this book, we try to avoid or at least minimize discussions on the theory and instead focus on showing you how to troubleshoot electrical equipment and control circuits. The book helps to increase your knowledge and skills in improving equipment productivity whilst reducing maintenance costs. Reading this book will help you identify, prevent and fix common electrical equipment and control circuits.

    pdf248p nguyenthai_thinh 16-03-2013 55 26   Download

  • For your electronics hobby entertainment; ENJOY! It is assumed that you have AT LEAST the equivalent of a Basic Electronics certificate for the electronics projects listed on this page. Other projects require more advanced electronics. A lot of these circuits assume the latter so I will no longer answer the tons of emails in regards to that. If you wish to learn more about electronics there is enough of that available on the internet. Circuits' Message Board Ask your questions here. Someone may answer them....

    pdf124p portalix 05-04-2011 228 87   Download

  • Intended Audience: Individuals with an interest in learning about electric motors and how they are controlled A simple understanding of magnetics is assumed Topics Covered: What is an electric motor? What are some common types of electric motors? How do these electric motors work? How these motors are controlled.

    ppt89p viet82vp 16-08-2012 68 26   Download

  • Ebook Electric Motor Control provides beginning students with a practical approach to motor control. The textbook discusses electrical and mechanical components and how they are connected to control different types of motors. Many different types of control circuit and illustrations are discussed. The text contains a wealth of practical information that will apply to almost any industrial application.

    pdf473p phanliem94 29-12-2015 19 5   Download

  • A control system is a collection of components working together under the direction of some machine intelligence. In most cases, electronic circuits provide the intelligence, and electromechanical components such as sensors and motors provide the interface to the physical world. A good example is the modern automobile. Various sensors supply the on-board computer with information about the engine’s condition. The computer then calculates the precise amount of fuel to be injected into the engine and adjusts the ignition timing. T...

    doc661p hoanglong89hui 24-06-2010 196 99   Download

  • John A. Shaw is a process control engineer and president of Process Control Solutions. An engineering graduate of N. C. State University, he previously worked for Duke Power Company in Charlotte, N. C. and for Taylor Instrument Company (now part of ABB, Inc.) in, N. Y. Rochester He is the author of over 20 articles and papers and continues to live in Rochester.

    pdf68p cusonson 21-01-2010 170 86   Download

  • There is often felt to be something odd about negative components, such as negative resistance or inductance, an arcane aura setting them apart from the real world of practical circuit design.This text is aimed at technicians, hobbyists, and students and provides complete circuit diagrams and building instructions for a wide range of creative sleuthing applications. The designs are fully tested and proven effective in real-world alarm,...

    pdf352p haidang1 17-12-2009 153 71   Download

  • Computers now form an integral part of most real-time control systems.With the advent of the microprocessors and microcontrollers in the last few decades the use of computers in control applications has been ever growing. Microcontrollers are single-chip computers which can be used to control real-time systems. Such controllers are also referred to as embedded real-time computers. These devices are low-cost, single-chip and easy to program.

    pdf313p cusonson 21-01-2010 137 62   Download

  • Today’s control system designers face an ever-increasing “need for speed” and accuracy in their system measurements and computations. New design approaches using microcontrollers and DSP are emerging, and designers must understand these new approaches, the tools available, and how best to apply them. This practical text covers the latest techniques in microcontroller-based control system design, making use of the popular MSP430 microcontroller from Texas Instruments.

    pdf329p nhulan0908 30-09-2012 105 61   Download

  • This text is aimed at technicians, hobbyists, and students and provides complete circuit diagrams and building instructions for a wide range of creative sleuthing applications. The designs are fully tested and proven effective in real-world alarm, sensor, and security equipment. Among the circuits highlighted are a multi-purpose high-gain amplifier, temperature and pressure sensors, vibration and pyroelectric sensors, smoke and toxic gas detectors, tachometer/speed gauges, a remote video and control system, door and window alarms, motion and impact detectors and tone signalling sensors.

    pdf296p ndkhuong177 20-06-2012 150 59   Download

  • The amount of knowledge an electrician must possess to be able to install and troubleshoot control systems in today’s industry has increased dramatically in recent years. A continuous influx of improved control components allows engineers and electricians to design and install even more sophisticated and complex control systems. Industrial Motor Control presents the solidstate devices common in an industrial environment.

    pdf570p nguyenthai_thinh 16-03-2013 84 39   Download

  • Control problems arise in the plant and must be solved in the plant. Until plant engineers and control designers are able to communicate with each other, their mutual problems await solution. I do not mean to imply that abstract mathematics is not capable of solving control problems, but it is striking how often the same solution can be reached by using good common sense. High-order equations and high-speed computers can be manipulated to the point where common sense is dulled

    pdf376p chipmoon 19-07-2012 56 25   Download

  • Conventional servo systems, to ensure machine performance, smoothness, positional error and low servo noise, require the adjustment of its servo’s gains as an initial crucial step. Even systems that employ auto-tuning require manual tweaking after the system is installed, especially if more that one axis are interdependent. Ezi-SERVO® employs the best characteristics of stepper and closed loop motion controls and algorithms to eliminate the need of tedious gain tuning required for conventional closed loop servo systems.

    pdf16p dienvietnam 09-10-2012 63 20   Download

  • Tham khảo sách 'digital logic circuit analysis and design', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf801p vanmanh1008 24-06-2013 45 16   Download

  • Automatic Water Supply and Drainage Control Ideal for level control of any conductive liquid. Both general-purpose and panel-use models available. Incorporates an arrester for surge and induced lightning protection. Wide range of models: Long-distance, high- and low-sensitivity, two-wire, etc. LED indicator for quick operation check.

    pdf76p 104103067 29-11-2010 93 15   Download

  • WE CASUALLY ACCEPT ELECTRONICS in our everyday world. Those who don’t understand how it works are casually obedient. Those who take the time to learn electronics are viewed as geniuses. Do you want to learn how to control the power of electronics?

    pdf317p nguyenthai_thinh 16-03-2013 41 14   Download

  • While coverage has improved in the provision of education, health and sanitation services, concerns remain with regard to quality and sustainability as well as equitable access, both geographically and socially. Under the NDP, the Government proposes to increase the involvement of local community organisations to ensure that, through “social control”, social services are more accountable to end-users. In addition, the Government plans a critical review of existing reform processes in the social sectors.

    pdf32p doiroimavanchuadc 19-02-2013 17 3   Download

  • Lecture "Radio Communication Circuits: Chapter 5&6" presents the following contents: RF Filters, Oscillators and Frequency Synthesizers (RF Oscilators, Voltage-Controlled Oscillators (VCO); Phase-Locked Loops (PLLs) and Applications). Invite you to consult.

    pdf65p doinhugiobay_12 15-01-2016 4 2   Download

  • This chapter introduces two-inductance, T and T', per-phase equivalent circuits of the induction motor for explanation of the scalar control meth-ods. The open-loop, Constant Volts Hertz, and closed-loop speed control methods are presented, and field weakening and compensation of sup and stator voltage drop are explained. Finally, scalar torque control, based on decomposition of the stator current into the flux-producing and torque-producing components, is described.

    pdf13p gaugau1905 09-12-2015 5 0   Download

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