starting and stopping of induction motors with no beyond high maximum currents‚ motor heating or mechanical shocks. However this is more vital for most of large machines because there is entirely reduced starting torque and reduced impacts on mechanical parts‚ however this result in an increase in the equipment lifespan. Also the soft starting and soft stopping result in mass energy saving the power supply since the starting currents and voltages are low‚ meaning the amount of power dissipated at the
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Figure 1. Mask set design. Shown is a single “mask unit cell” and its contents. Each completed 2 inch wafer contains roughly forty whole mask cells. ECE 4752 Wafer Test Procedures In order to evaluate the electrical characteristics of the CMOS devices fabricated in ECE/ChBE 4752‚ a probe station is used to connect test equipment to the devices on-wafer. This is accomplished by positioning probes with mechanical manipulators such that their tips rest on metal pads on the wafer. Care must be
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Pilot trolley method for trains AIM: To design a auto pilot trolley method for trains. Base Technology: EMBEDDED Abstract: It is a very useful project. By using this we can reduce the more train accident. The trolley is communicating with the train using ISM based RF signal. 432.92 MHz frequency signal is used for communication. As we do the project we use this frequency. It will sense the object using the IR signal‚ bomb is detected using metal detector‚ track open is sensed using limit
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Resistors act to reduce current flow‚ and‚ at the same time‚ act to lower voltage levels within circuits. In electronic circuits‚ resistors are used to limit current flow‚ to adjust signal levels‚ bias active elements‚ and terminate transmission lines among other uses. High-power resistors that can dissipate many watts of electrical power as heat
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1488 IEEE TRANSACTIONS ON POWER ELECTRONICS‚ VOL. 25‚ NO. 6‚ JUNE 2010 Space Vectors Modulation for Nine-Switch Converters Seyed Mohammad Dehghan Dehnavi‚ Student Member‚ IEEE‚ Mustafa Mohamadian‚ Member‚ IEEE‚ Ali Yazdian‚ Member‚ IEEE‚ and Farhad Ashrafzadeh‚ Senior Member‚ IEEE Abstract—Recently‚ nine-switch inverter and nine-switch-zsource inverter have been proposed as dual output inverters. In this paper‚ the space vector modulation (SVM) of nine-switch inverter and nine-switch-z-source
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CHAPTER 1 INTRODUCTION This project “DTMF REMOTE APPLIANCE CONTROL SYSTEM USING MOBILE PHONE” is used to control appliances which are far away from the user using mobile phone. The aim of the proposed system is to develop a cost effective solution that will provide controlling of home appliances remotely and enable home security against intrusion in the absence of homeowner. The devices connected as home and office appliances consume electrical power and they should be controlled as well as
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Project Model No: 164 ABSTRACT PRECISE KILLOMETER CALCULATION BY UNDERGROUND CABLE FAULT DETECTOR The project uses the simple concept of OHMs law where a low DC voltage is applied at the feeder end through a series resistor. The current would vary depending upon the length of fault of the cable in case there is a short circuit of LL or 3L or LG etc. The series resistor voltage drop changes accordingly which is then fed to an ADC to develop precise digital data which the programmed microcontroller
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Advanced Railway Gate Control & Track Switching system 2013 A THESIS SUBMITTED TO THE DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING Specialization in Industrial Control & Instrumentation Engineering In fulfillment for the award of the degree Of BACHELOR OF ENGINEERING In Department of Electrical & Computer Engineering ETHIOPIAN INSTITUTE OF TECHNOLOGY – MEKELLE EIT-M MEKELLE‚ ETHIOPIA JUNE‚ 2013 Mekelle University Page i Advanced Railway Gate Control & Track Switching
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NAME OF THE STUDENT: DASARI VENKATA SIDDARTHA PROGRAM SOUGHT : MS IN ELECTRICAL ENGINEERING SEMESTER SOUGHT : FALL - 2012 STATEMENT OF PURPOSE It is with a sincere sense of gratitude towards the opportunity given to me‚ I pen down this statement. Education not only expands the horizons of one’s knowledge but also simultaneously implants an insatiable desire to acquire more and more knowledge. The most prominent inspirational factor for my further studies as my natural
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Parts: Breadboard Handheld DMM DC power supply Test leads Resistor kit 1. List the functions available on the DM717 handheld digital multimeter (DMM). This meter can measure three basic electrical properties voltage‚ current and resistance. 2. What is the function of the COM connection? What color lead is placed in this connection? It’s the common ground and is used in all measurements. Black lead is placed in this connection. 3. What is the function of the “VWmA”
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