chapter 1 [pic] 1.1 Objectives of the Study Prepaid energy meter are being used worldwide to improve the collection of funds for the energy used. Weather it is developed nation or developing nation all electricity boards are facing two major issues 1. Power Theft 2. Collection of funds In the existing system the above two problems are non predictable and time consuming process respectively. To overcome these things in the proposed system Cal cards has developed and implemented
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end of this topic you will be able to; describe‚ by drawing a graph‚ the effect of a capacitor on the output waveform from a rectifier; know that the size of the ripple voltage is dependent on the method of rectification‚ the values of capacitance and load resistance; describe‚ by drawing graphs‚ the effect of loading on the output waveform of a smoothed rectifier. Capacitive smoothing. In our work on power supplies so far we have determined how to calculate the peak value of the output
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design of the laptop charger would require the use simulation software. In this project we will bee using PSIM software. IV- Theory of the Design The laptop charger would be designed using a single phase transformer and a rectifier circuit with filter. 1. Transformer We will use a step down transformer with the specification listed in the table below. The transformer is designed to connect in series for AC-DC converter design. It is needed to input at 120
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6.152J/3.155J SpringTerm 2005 Lecture 12 -- Etch and Pattern Transfer I (Wet Etch) Etching and Pattern Transfer (1) OUTLINE • Basic Concepts of Etching • Wet Etching • Specific Wet Etches – Silicon – Silicon Dioxide – Aluminum • Dry (Plasma) Etch – Review of Plasmas Reading Assignment: 6.152J / 3.155J -- Spring Term 2005 Plummer‚ Chapter 10 1 Lecture 12 - Etch and Pattern Transfer I (Wet Etch) Introduction • Etching is selective removal of thin film(s) resulting in a desired
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Wind Energy System based on Buck-boost Controller Abstract – In this edge most of the countries are facing energy related problem therefore researchers are now try to find such a system which should not create any environment issues. In nature there is various non-conventional resources use for the generation of electricity such as water‚ sunlight‚ geothermal energy. But there is disadvantage of solar energy is that we can’t generate power using solar energy in rainy season and in night time
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CHAPTER-1 INTRODUCTION TO HOME AUTOMATION 1.1 What is Home Automation? Home automation is the residential extension of "building automation". It is automation of the home‚ housework or household activity. Home automation may include centralized control of lighting‚ HVAC (heating‚ ventilation and air conditioning)‚ appliances‚ and other systems‚ to provide improved convenience‚ comfort‚ energy efficiency and security. Home automation for the elderly and disabledcan provide increased quality of
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CHAPTER 1 INTRODUCTION 1.1 INTRODUCTION: 1.1.1 EMBEDDED SYSTEM: An embedded system is a special-purpose system in which the computer is completely encapsulated by or dedicated to the device or system it controls. Unlike a general-purpose computer‚ such as a personal computer‚ an embedded system performs one or a few predefined tasks‚ usually with very specific requirements. Since the system is dedicated to specific tasks‚ design engineers can optimize it‚ reducing
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Corrosion Control and Monitoring ABC Company ABC Chemical Complex Engineering Specification ABC Chemical Complex 1 Corrosion Control & Monitoring SCOPE – This Engineering Specification includes external and internal corrosion control and monitoring for DOT regulated pipelines. – Design‚ construction‚ construction inspection‚ construction acceptance‚ operation‚ and maintenance of DOT regulated pipelines are covered by this Engineering Specification. ABC Chemical Complex 2 Corrosion Control
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DC-DC Converter Design for Battery-Operated Systems Harry Arbetter. Robert Erickson. and Dragan Maksimovid Power Electronics Group Department of Electrical and Computer Engineering University of Colorado‚ Boulder‚ CO 80309-0425 USA Abstrurt - This paper describes performance‚ design and optimization of de-dc converters for energy limited‚ battery operated systems. Variable-frequency operation is used to achieve voltage regulation and high efficiency for an extremely wide range of load currents
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ABSTRACT Capacitance measurement is of immense importance in the field of electronics. An instrument that measures capacitance to accuracy better than 0.5% has been improvised and rendered auto-ranging by means of an 89c51 circuit. The principle is that of a “direct” or fundamental principle of the time constant of the component. For e.g.‚ the time taken to charge a capacitor to 50% of the applied voltage is given by 0.5 V = V (1- exp (-t/τ) ) The value of t is determined as 0.69314718τ. Knowing
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