CONTENTS 1. INTRODUCTION 2. DESIGN PRINCIPLE 3. CIRCUIT DESCRIPTION a. Power supply b. Under voltage/over voltage detector c. NOR Gate (OR and NOT gate) d. Bi-stable / Latch e. Relay driver f. Buzzer Driver 4. FUTURE EXPANSION 5. CONCLUSION INTRODUCTION The protection system is one o the important aspect on which major manufacturers is concentrating. The companies like L&T‚ SIMENS etc. The protection system not only provides durability
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Republic of the Philippines Department of Education Eastern Samar National Comprehensive High School Borongan City‚ Eastern Samar PET-Reinforced CHB An Investigatory Project Requirement for Research II Ralph Adrian T. Ramos Kiwanis M. Abunda Researchers Mrs. Alexandra S. Parena Adviser Acknowledgment The researchers would like to extend their profound gratitude and appreciation to all who have contributed to the
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Engineering and Information Sciences Course Number: ECET210 ProfessorLaboratory Number: 7 Laboratory Title: Voltage Rectifier and Voltage Regulation Circuits Submittal Date: Objectives: 1. To analyze the characteristics of rectifying diode using theoretical‚ simulation‚ and physical construction of the circuit. 2. To analyze the characteristics of voltage regulation (zener diode and voltage regulator) using theoretical‚ simulation‚ and physical construction of the circuit. Results:
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regulate the voltage supply‚ given to electronic circuits. This project‚ namely VARIABLE VOLTAGE REGULATOR‚ aims at fulfilling such small goals‚ using the 3-terminal voltage regulator LM317. The circuit consists of an IC LM317 and a set of resistors and capacitors‚ in addition to the transformer and the rectifying element. The AC voltage‚ from the mains supply is initially stepped down to the desired voltage‚ which is then rectified to be applied to the input terminal of the voltage regulator
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Group 9 Investigatory Project JH 7 – St. Leopold of Castelnuovo Chapter 2 Review of Related Studies The rinds of orange and other citrus fruits contain flavonoid phytonutrients. John A. Manthey‚ a chemist of the USDA Agricultural Research Service‚ discovered that these flavonoids can lower LDL‚ “bad”‚ cholesterol levels and triglyceride levels at a significant level. They also have potential anti-inflammatory properties. All these benefits can help reduce the risk of heart disease
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a=er a power cut your lamp glows automa4cally. The following circuit based project can help to make your own automa4c night lamp. When the circuit is taken into light‚ the resistance of LDR decreases due to which the base voltage decreases. The voltage becomes so low that the base emiGer junc4on is not forward biased due to
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Table of Contents I. Background of the Study …………………………………………………2 II. Statement of the Problem ………………………………………………...4 III. Significance of the Project …………………………………………….....5 IV. Review of the Related Literature ………………………………………...6 V. Material and Equipments …………………………………………………9 VI. Analysis of the Data………………………………………………………11 VII. Observation and Findings ………………………………………………...13 VIII. Generalization ………………………………………………………….....14 IX. Doctors’ Point of View…………………………………………………
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HOMEMADE BOUNCY POLYMER An Entry for the 2009 DIVISION SCIENCE FAIR TEAM CATEGORY CHINKEE MAE M. ALANZALON Grade VI – Jose Rizal DAN ALFONSO VALENTIN V. SORIA TRISHA KATE E. GENERAL Grade V – E. Aguinaldo Researchers Mr. MARK ANTHONY R. CUA Research Adviser Marcela Marcelo Elementary School Pasay City October 2009 CHAPTER 1 INTRODUCTION One might think that chemists are a bunch of boring scientists who wear lab coats and look at beakers all day‚ but did you know that many toys you play with
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Bataan National High School City of Balanga Oregano and Mayana Extract as an Eggplant Shelf Life Enhancer By: Mary Faith C. Delas Alas Submitted To: Mrs. Analyn J. Dabu Table of Contents Title . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Abstract. . . . . .
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HOLY CHILD EDUCATIONAL CENTER‚ INC. SAN JOSE‚ IRIGA CITY JUNIOR HIGH SCHOOL Researchers: Marvin Sayson Angelika Princess Zagada Chelsea Cleofe Samar Lloyd Raymond Florece Acknowledgement: We would like to extend our heartfelt gratitude to the people who have inspired us and who encourage us to continue this investigation. To our parents‚ for their invaluable support‚ for the trust‚ the loyalty and the understanding they have given to us during the conduct
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