"Uninterruptible power supply" Essays and Research Papers

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    ENROLLMENT SYTEM

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    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 voltage from an rms value‚ and how to use half-wave and full-wave rectification methods to change a.c. into variable value d.c. The next stage is to smooth out the pulses

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    CHAPTER 1 INTRODUCTION This project is mainly used to save power automatically instead of doing manual by using IR sensors The main consideration in the present field technologies are Automation‚ Power consumption and cost effectiveness. Automation is intended to reduce man power with the help of intelligent systems. Power saving is the main consideration forever as the source of the power(Thermal‚ Hydro etc.‚)are getting diminished due to various reasons. Wireless communication

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    IR based street light

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    in Intelligent IR & LDR based automatic High way light control system Technical Specifications: Title of the project : Intelligent IR based automatic highway lighting Domain : Embedded Systems Design Power Supply : +5V‚ 500mA Regulated Power Supply Sensors : IR pair‚ LDR Load : Highway lighting system Applications : Street lights‚ Industrial and House Hold Applications Developed By : M/S Wine Yard Technologies Phone : 040-

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    CHAPTER I INTRODUCTION This chapter outlines the background to the study‚ the statement of the problem‚ objectives and the justification of the research. . 1.1Background Public utilities need a parking infrastructure that can function efficiently and be integrated with the other urban city utilities

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    Ultrasonics

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    stage (40dB) and 10 times (20dB) at the next stage. As for the dB (decibel)‚ refer to "Logarithm Table". Generally‚ the positive and the negative power supply are used for the operational amplifier. The circuit this time works with the single power supply of +9 V. Therefore‚ for the positive input of the operational amplifiers‚ the half of the power supply voltage is appied as the bias voltage. Then the alternating current signal can be amplified on 4.5V central voltage. When using the operational

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    Data Acquisition System

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    line of nomenclature blurs even more. Physically‚ embedded systems ranges from portable devices such as digital watches and MP3 players‚ to large stationary installations like traffic lights‚ factory controllers‚ or the systems controlling nuclear power plants. In terms of complexity embedded systems can range from very simple with a single microcontroller chip‚ to very complex with multiple units‚ peripherals and networks mounted inside a large chassis or enclosure.

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    The home appliances control system with an affordable cost was thought to be built that should be mobile providing remote access to the appliances and allowing home security. Though devices connected as home and office appliances consume electrical power. These devices should be controlled as well as turn on/off if required. Most of the times it was done manually. Now it is a necessity to control devices more effectively and efficiently at

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    Thyristor Switch Application

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    EE3092 – Laboratory Practice V Thyristor Switch Application Instructed by: Name : K.P.A.I.Perera Index No. : 100385H Course : BSc. Engineering Group : Group 09 Date of Per : 26/06/2013 Date of Sub : 17/07/2013 OBSERVATION SHEET Name : K.P.A.I.Perera Index No. : 100385H Course : BSc. Engineering Group : Group 09 Date of Per : 26/06/2013 Date of Sub : 17/07/2013 Instructed By : a) DC switch opening and closing by means of

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    Light Fidelity (Li-Fi)

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    INTRODUCTION For years‚ infrared LED has been merely a system for piping light around corners and into the inaccessible places to allow the hidden to be lighted. But now‚ infrared LED has evolved into a system of significantly greater importance and use. Throughout the world‚ it is now being used to transmit voice‚ television and data signals as light waves. Its advantages as compared with conventional coaxial cable or twisted wire pairs are manifold. As a result‚ millions of dollars are being spent

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    Manus

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    Chapter 1 Introduction 1.1 Introduction: Wireless communication has announced its arrival on big stage and the world is going mobile. We want to control everything and without moving an inch. This remote control of appliances is possible through Embedded Systems. The use of “Embedded System in Communication” has given rise to many interesting applications that ensures comfort and safety to human life. The project mainly focuses on transmission of textual data through air interface by the use

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