"Uninterruptible power supply" Essays and Research Papers

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    Advance Energy Meter

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    METER” prepared by us can be used to find out how much electricity appliances in our house are using and how much they cost to run. INTRODUCTION If we want to save power and reduce costs‚ we need to know how much power each appliance uses over a period of time. Most appliances don’t run all the time‚ so we need to know the power they use while

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    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 turn on /off if required. Most of the time‚ it was done manually. Now it is a necessity to control devices more effectively and efficiently at anytime from anywhere. Take an instant when we are going to office

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    Rfid Based Attendance System

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    HBeonLabs Off. No. 46‚ 1st Floor‚ Kadamba Complex Gamma-I‚ Greater Noida (India) - 201308 Contact us: +91-120-4298000 +91-9212314779 info@hbeonlabs.com training@hbeonlabs.com www. hbeonlabs.com RFID BASED ATTENDANCE CUM SECURITY SYSTEM INTRODUCTION Our final year project is RFID based Attendance cum Security System. This idea came to my mind when I saw our lecturers taking the attendance of 100s of students very hardly. We thought we can integrate the RFID based Security System with

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    Automatic Punching Machine

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    CONTENTS CONTENTS 1. Introduction 2. Synopsis 3. Block Diagram 4. Block Diagram Description 5. Circuit diagram 6. Circuit description 7. Component details 8. Working of project 9. Fabrication of PCB 10. Application 11. Future development 12. Cost estimation 13. Conclusion 14. Bibliography INTRODUCTION Introduction: The automation is now carried on not only industries but also houses. The automation of a particular system avoids

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    AUTOMATIC RAILWAY SIGNAL A PROJECT REPORT Submitted by VAHALUWALA SUHEL R. SHETH HARSHIL R. PATEL KASHYAP A. TANDEL JAY S. TANDEL RAJ B. In fulfillment for the award of the degree of BACHELOR OF ENGINEERING in ELECTRICAL ENGINEERING Mahatma Gandhi Institute Of Technical Education And Research Center‚ NAVSARI Gujarat Technological University‚ Ahmedabad May‚ 2012 ELECTRICAL ENGINEERING DEPARTMENT 2012 Certificate This is to certify that the dissertation entitled

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    Circuit Design

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    27‚ 2000 http://amsc.tamu.edu/ Texas A&M University Analog and Mixed-Signal Center Low Voltage Analog Circuit Design Techniques: Roadmap Low voltage (LV) power supply circuit design techniques are addressed in this tutorial. In particular: (i) Introduction; (ii) Transistor models capable to provide performance and power consumption tradeoffs; (iii) Low voltage implementation techniques‚ such as floating gates and bulk driven; (iv) Basic building blocks not involving cascode structures

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    closely monitor and control the power imbalance‚ this system gives the constant supply of voltage to the load for the distribution system to show this we design the circuit where we show that how we make the constant voltage by changing the voltage using tap changer‚ we use instruments for making the constant voltage is micro controller. The equipment used for this project are two transformers‚ one for power supply and another for tap changing

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    Bibliography: http://www.ehow.com/info_8070052_trivia-electricity.html. Justin Schamotta‚ not mentioned. http://www.ehow.com/how_7867088_add-system-wired-alarm-system.html. Sam Kessler‚ not mentioned. http://www.ehow.com/how-does_4910633_dc-power-supply-work.html. Isaiah David‚ not mentioned. http://www.abs-cbnnews.com/lifestyle/10/12/09/scientists-inventing-flood-warning-systems. TJ Manotoc‚ October 12‚ 2009. Basha‚ E. et al.2008. Model-Based Monitoring for Early Warning Flood Detection. Cambridge

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    Why use regulated power supplies? The ideal voltage-regulated power supply would have the following features: 1. Zero output impedance at DC and at all frequencies 2. Zero regulation (constant DC output voltage) for a wide range of AC line voltages and over the entire range of load currents that are required by the powered circuitry. 3. Zero power dissipation. 4. Instantaneous recover from changes in line voltage and load current. 5. Overload protection so that normal operation is automatically

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    Visitor counting is simply a measurement of the visitor traffic entering and exiting offices‚ malls‚ sports venues‚ etc. Counting the visitors helps to maximize the efficiency and effectiveness of employees‚ floor area and sales potential of an organization .Visitor counting is not limited to the entry/exit point of a company but has a wide range of applications that provide information to management on the volume and flow of people throughout a location. A primary method for counting the visitors

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