ELECTRONIC DEVICES AND CIRCUIT THEORY BY ROBERT BOYLESTAD 9TH EDITION

Tìm thấy 10,000 tài liệu liên quan tới từ khóa "ELECTRONIC DEVICES AND CIRCUIT THEORY BY ROBERT BOYLESTAD 9TH EDITION":

Silicon Carbide Materials Processing and Applications in Electronic Devices Part 12 docx

SILICON CARBIDE MATERIALS PROCESSING AND APPLICATIONS IN ELECTRONIC DEVICES PART 12 DOCX

now being that the manufacturing of different electronic devices becomes feasible. The wideband-gap semiconductor SiC, with its excellent thermal conductivity, large breakdown fields,and resistance to chemical attack, will be the material of choice for these applications. Realizedprototype power devices of SiC, like rectifier diodes, and junction field-effect transistors,show indeed encouraging performance results under extreme conditions (54)-(66). In theoptical device arena, the ever increasing need for higher density optical storage and fullcolor display technologies are driving researchers to develop wide band-gap semiconductoremitting technologies which are capable of shorter wavelength operation. Since the differentenergy gap values of SiC all happen to lie in the visible range of the spectrum, SiC is aninteresting optical device material. Indeed, blue light emitting diodes were the first electronicSiC devices which found a good sale. Some SiC polytypes are in addition most promisingas photodetective material sensitive to ultraviolet radiation. SiC is a good candidate for ashort wave length diode laser. Prototype transistors have been fabricated from SiC, and themicrowave and high temperature performance of SiC transistors have been studied. Deviceslike field effect transistors, bipolar storage capacitors, and ultraviolet detectors have beenfabricated (57)-(64). SiC has a relatively high atomic bonding energy which is responsible forits mechanical strength and chemical stability at high temperatures. This material can withoutmajor difficulty, be crystallized in several polytypes, primarily due to similar geometricstructures and atomic bonds (1)-(11). The different stacking of C-Si bilayers remarkablyinfluences the properties of SiC. The most pronounced example concerns their electronicstructure. Hence, a controlled epitaxial growth of different polytypes on each other wouldlead to high-quality heterostructures of chemical identical material with a locally adjustableband gap (7)-(14). Meanwhile, growth of heterocrystalline structures seems to be possible (4),but exhibits problems with the reproducibility and the crystal quality. Another possibilityto create a combination of two polytypes is a solid-solid phase transition, which transformsone polytype into another one (6)-(8). However, polytypism also gives some advantages forconstructing electronic devices, for example homo-material heterostructures. Quantum wellscan be made by embedding a SiC polytype in another polytype with a wider gap(55)-(60).Among the SiC polytypes, 6H is most easily prepared and best studied, while the 3C and4H polytypes are attracting more attention for their superior electronic properties. The very
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Tài liệu Analog Electronics with Labview P1 doc

TÀI LIỆU ANALOG ELECTRONICS WITH LABVIEW P1 DOC

formulations, the results from Mathcad and SPICE are identical in the case of the use of basicsimulation levels.Samples of all of the projects have been completed and are included. These provide for eitherdemonstrations or simulated results without actually running the programs with circuits. Themeasured data are stored in LabVIEW graphics and can be extracted to obtain data files in thesame manner as actually making the measurements. In some cases, the simultaneous takingof data, plotting and curve fitting is simulated. Units 13 and 14 are theoretical only but eachhas Mathcad problems on the topic of these respective units.Special features of the lab experience are as follows:• The lab projects are based entirely on computer data acquisition using LabVIEW and aNational Instruments data acquisition card (DAQ) in the computer for interfacing withthe circuit board.• Each device category has an associated project for evaluating SPICE parameters inwhich device model parameters are obtained. Subsequent amplifier projects use theparameters in performance assessment.• No external instrumentation is required. The function generator, voltmeters, andoscilloscopes are virtual and provided by LabVIEW and a DAQ card in the computer. Theprojects on the current-mirror load common-source amplifier and the operationalamplifier require an external power supply.• Circuits are constructed on a special circuit board. The board is connected to thecomputer DAQ card through a National Instruments shielded 68-pin cable. The circuitboard allows expedient, error-free construction of the circuits, as connector strips forthe respective output and input channels and ground are available directly on theboard.Topics included in this course treat many of the most relevant aspects of basic modern analogelectronics without straying into peripheral areas. The course essentially streamlines the studyof analog electronics. There is not a unit on, for example, feedback per se, but most basictypes of feedback are addressed at some point. The role that the device plays in frequencyresponse is omitted. This is consistent with the fact that to a large extent, the intension is thattheory and measurements can be connected.
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Bulk Acoustic Wave Theory and Devices ppt

BULK ACOUSTIC WAVE THEORY AND DEVICES PPT

and Devices and is the sole proprietor of the copyright of said literary work (U.S. Copyright Office registration #TX 2-387-039); and Whereas, the Assignee desires to acquire the entire interest of the Assignor in said literary work, including the copyright thereon; Now, therefore, in consideration of $1 .OO and other valuable consideration, the receipt of which is hereby acknowledged, the Assignor hereby assigns to the Assignee, his successors and assigns, all its literary property right, title and interest of every kind throughout the world, in and to said literary work and in the copyright thereon, including all the profit, benefit and advantage that may arise from printing, publishing and vending the same throughout the world, together with the right to secure renewals, reissues and extensions of such copyright, which interest and right shall be held to the full end of the term for which such copyright or any renewal or extension thereof is or may be granted. In Witness Whereof, the Assignor has executed this instrument. LICENSING AGREEMENT AGREEMENT entered into this 7th dav of Febmarv, 2000, by and between Artech House, Inc., a Massachusetts (U.S.A.) corporation with its usual place of business at 685 Canton Street, Massachusetts 02062 (U.S.A.), hereinafter referred to as the "Assignor" and Joel Rosenbaum whose
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Smart Material Systems and MEMS Design and Development Methodologies Vijay K. Varadan University pot

SMART MATERIAL SYSTEMS AND MEMS DESIGN AND DEVELOPMENT METHODOLOGIES VIJAY K. VARADAN UNIVERSITY POT

by its best fabrication process. Batch processing of suchhybrid silicon and polymer devices thus seems feasible.The combined architecture may also result in sheets ofsmart skins with integrated sensors and actuators at themm to mm scale. For some applications (say airfoilsurfaces), the smart skin substrate has to be flexible toconform to the airfoil shape and at the same time it has tobe compatible with the IC processing for sensor andsmart electronics integration. It has been proposed byCarraway [15] that polyimide is an excellent material foruse as the skin because of its flexibility and IC processingcompatibility. The control loop between the sensors andactuators employs multifunctional materials which pro-vide electrical functionality at selected locations usingconductive polymers and electrodes that are connected toon-site antennas communicating with a central antenna.A related and difficult problem, and one which has beenlargely unaddressed is the method for telemetry of thedata. In some applications, stresses and strains to whichthe structure is subjected to may pose a problem forconventional cabling. In others, environmental effectsmay affect system performance. Advances in conformalantenna technology coupled with MEMS sensors/actua-tors appear to be an efficient solution. The integration ofmicromachining and microelectronics on one chip resultsin so-called smart sensors. In the latter, small sensorsignals are amplified, conditioned and transformed into astandard output format. They may include a microcontroller, digital signal processor, application specificintegrated circuit (ASIC), self test, self-calibration and
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PARMA ENDORION: ESSAYS ON MIDDLE-EARTH

PARMA ENDORION: ESSAYS ON MIDDLE-EARTH

PARMA ENDORION: Essays On Middle-earth Electronic Book Edition by Michael Martinez Edited by Matt Tinaglia The Hunting Party I Copyright © Anke Eissmann. Used by permission. Michael Martinez begins a comprehensive study of Tolkien’s imaginary history by “Browsing the Compleat Middle-earth Library”. His trademark conversational tone and style introduce Tolkien’s readers to new perspectives on Elves, Hobbits, Númenoreans, and other fantastic inhabitants of Middle-earth. Advising that “if you really want to see where it all came from…you first need to see what it all is”, Martinez explores Tolkien’s pseudo-history in detail, analyzing the motivations and values of Middle-earth’s civilizations as described by Tolkien himself. Extensive research on Tolkien’s Second Age, a mysterious era spanning thousands of years, illuminates the second “Fall” of Tolkien’s Elves, who made the dreadful Rings of Power, withheld vital knowledge from their allies, and exposed all of Middle-earth to Sauron’s evil. Finally, Martinez provides a wealth of insightful commentary, quoting Tolkien’s letters and his son Christopher’s extensive documentation, on those of Tolkien’s sources which are often missed by other researchers. You will never look at Middle-earth the same way again after reading Understanding
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Tiếng anh chuyên ngành kế toán part 1 pptx

TIẾNG ANH CHUYÊN NGÀNH KẾ TOÁN PART 1 PPTX

Proven at Today’s Most Successful Companies, Stephen George andArnold WeimerskirchForthcoming:The Portable MBA in Management, Second Edition, Allan CohenPORTABLEMBAinFINANCE ANDACCOUNTINGTHIRD EDITIONEdited byJohn Leslie LivingstoneandTheodore GrossmanJohn Wiley & Sons, Inc.Copyright © 2002 by John Wiley & Sons, Inc., New York. All rights reserved.No part of this publication may be reproduced, stored in a retrieval system or transmitted in any formor by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except aspermitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the priorwritten permission of the Publisher, or authorization through payment of the appropriate per-copyfee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400,fax (978) 750-4744. Requests to the Publisher for permission should be addressed to the PermissionsDepartment, John Wiley & Sons, Inc., 605 Third Avenue, New York, NY 10158-0012, (212) 850-6011,fax (212) 850-6008, E-Mail: PERMREQ@WILEY.COM.This publication is designed to provide accurate and authoritative information in regard to the subjectmatter covered. It is sold with the understanding that the publisher is not engaged in renderingprofessional services. If professional advice or other expert assistance is required, the services of acompetent professional person should be sought.This title is also available in print as Bookz ISBN 0-471-06185-9. Some content that appears in the printversion of this book may not be available in this electronic edition.
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TOYOTA TRAINING BODY ELECTRICAL DIAGNOSIS INTRO

TOYOTA TRAINING BODY ELECTRICAL DIAGNOSIS INTRO

Locate assigned System Circuit Diagrams in the EWD•Identify each of the symbols used on the system diagram, wire color. wireidentification, and pin number location•Locate, How to use the Manual; Abbreviations; Glossary of Terms & Symbols: RelayLocations & JB Inner Circuit Diagram; Relay Blocks; Connector List; Part Numbersof Connectors; Overall Electrical Wiring Diagram; and support sections, SystemOutline & Service Hints•Locate components, ground points, connectors, junction blocks, harness to harnessconnectors; switches; relays; splice points; in the manual and on the vehicle•Power source section and ground point section and describe how each is used whendiagnosing a problem3. Given a 2010 Camry Remote Control Mirror System Circuit Diagram and a Radiator &Condenser Fan System Circuit Diagram the technician will be able to:•Apply basic current flow theory to the diagram by tracing the path of current flowthrough the circuit from B+ to ground
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147 test bank for accounting 9th edition by horngren

147 test bank for accounting 9th edition by horngren

Free Test Bank with Answers for Accounting Information Systems 1st Free Test Bank with Answers for Accounting Information Systems 1st Free Test Bank with Answers for Accounting Information Systems 1st Test Bank with Answers for Intermediate Accounting Principles and Analysis 2nd Test Bank with Answers for Intermediate Accounting Principles and Analysis 2nd Test Bank with Answers for Financial Accounting An Introduction. Free Test Bank with Answers for Auditing and Assurance Services Understandin Test Bank with Answers for Financial Accounting An Introduction to Concepts Methods and Uses Test Bank with Answers for Financial Accounting An Introduction to Concepts Methods and Uses Test Bank with Answers for Advanced Accounting 12th Edition Test Bank with Answers for Auditing A Business Risk Approach 8th Edition Free Test Bank for Management Accounting with Answers Ngân hàng câu hỏi trắc nghiệm Hệ thống thông tin kế toán, Ngân hàng câu hỏi kèm đáp án đề trắc nghiệm Tài chính kế toán, đề trắc nghiệm Quản trị kế toán, kế toán nâng cao, Đề trắc nghiệm có đáp án Tài chính kế toán, Kế toán kiểm toán, kế toán quản trji Test Bank for Managerial Accounting with Answers Đề trắc nghiệm kế toán, trắc nghiệm tài chính, Test bank for Accounting, Test bank with Answer, Test Bank Financial Accounting
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Goat keeping in the tropics - Part 1 pptx

GOAT KEEPING IN THE TROPICS - PART 1 PPTX

ForewordAgromisa’s Question and Answer Service receives many questions on goat keeping. We therefore have written this practical Agrodok on goat keeping. The aim is to provide basic information for those who work directly with the small-scale goat farmers in the tropics. It is not our intention to be comprehensive. For those who wish to know more: a number of good in-depth books are mentioned in the bibliography. In writing this book, we made use of materials of others. We wish to thank all those who have contributed to this Agrodok. We especially wish to thank Peter Hofs of the Tropical Animal Husbandry section of the Wageningen Agricultural University for his useful comments. We hope that this booklet will be useful and interesting for the readers. The Authors, Wageningen, March 1991 Foreword to the second revised edition In this second revised edition the chapter on nutrition and feeding has been improved by Arno Overgaag, one of Agromisa’s animal hus-bandry experts. Dr. M.N.M. Ibrahim of the Department of Animal Sciences, University of Peradeniya, Sri Lanka, reviewed the revised chapter and Robert Corner did the editing work. Barbera Oranje im-proved the pictures throughout the whole Agrodok. We are thankful to all of them, for their time and effort they spent on this. We especially want to acknowledge OXFAM (UK and Ireland) in as-sociation with FARM-Africa, who have granted us permission to use some of the illustrations from their excellent publication: ‘Improving Goat Production in the Tropics’ (1996). We are also grateful to ITDG Kenya and Baobab Newsletter (ALIN) who gave us permission to use an article on making salt licks. Marg Leijdens, co-ordinator Agrodok Publications,
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Báo cáo hóa học: " Electronic and magnetic properties of SnO2/CrO2 thin superlattices" doc

BÁO CÁO HÓA HỌC ELECTRONIC AND MAGNETIC PROPERTIES OF SNO2 CRO2 THIN SUPERLATTICES DOC

potential for high-performance spin-based electronics[1]. A key r equirement in developing most devices basedon spins is that the host material must be ferromagnetic(FM) above 300 K. In addition, it is necessary to have effi-cient spin-polarized carriers. One approach to achievethe spin injection is to create built-up superlattices (SLs)of alternating magnetic and non-magnetic materials. Oneattempt has already been made by Zaoui et al. [2],through ab initio electronic structure calculations for theone monolayer (ZnO)1(CuO)1SL, with the aim of obtain-ing a half-meta llic behavior material, since they are 100%spin polarized at the Fermi level and therefore appearideal for a well-defined carrier spin injection.In this study, the magnetic a nd electronic propertiesof (CrO2)n(SnO2)nSLs with n = 1, 2, , 10 being thenumber of monola yers are investigated. These systemsare good candidates to obtain a half-metallic behaviormaterial since bulk rutile-CrO
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GUIDELINES FOR HANDLING WATER-DAMAGED ELECTRICAL EQUIPMENT doc

GUIDELINES FOR HANDLING WATER DAMAGED ELECTRICAL EQUIPMENT DOC

Power equipment involves low voltage or medium voltage protective devices within an overall switchgear assembly. The assembly may also contain cabling, buswork with appropriate insulators, current transformers, electromechanical or electronic relays, and metering. Reliable operation of the protective devices is vital to system safety; however, these devices can be adversely affected by water. In the case of low voltage and medium voltage circuit breakers and switches, the operation of the mechanism can be impaired by corrosion, by the presence of particles such as silt, and by the removal of lubricants. The dielectric properties of insulation materials and insulators will degrade and, for air circuit breakers, the condition of the contacts can be affected. Further, low voltage power circuit breakers usually incorporate electronic trip units; the functioning of these units will be impaired. Similarly, the functionality of electronic protective relays and meters can be impaired. In the case of fuses, water may affect the filler material. A damaged filler material will degrade the insulation and interruption capabilities of fuses. Power circuit breakers and medium voltage breakers are designed to be maintainable with the possibility, for example, of replacing contacts in air circuit breakers. It may, therefore, be possible to reuse such breakers provided the refurbishing is performed in close consultation with the manufacturer. This would include cleaning and drying techniques, lubrication advice, and thorough testing prior to the reapplication of power. However, the electronic trip units of low voltage power circuit breakers, and electronic protective relays and meters in any power equipment should be discarded and replaced, or at least returned to the manufacturer for inspection and possible refurbishment. In the case of fused equipment, the fusible units should be replaced, and the remainder of the apparatus may be suitable for refurbishing in close consultation with the manufacturer. In all cases, great attention must be paid to the thorough cleaning, drying, and testing of
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Tài liệu Analog Electronics with Labview P1 pdf

TÀI LIỆU ANALOG ELECTRONICS WITH LABVIEW P1 PDF

Muller R., and T. Kamins. Device Electronics for Integrated Circuits, 2nd Ed. Wiley, New York,1986.General textbook on electronics (basic):Sedra, A.S., and K.C. Smith. Microelectronic Circuits, 4th Ed. Oxford University Press, Oxford,1998.General treatment of analog circuits including applications (basic to advanced):Soclof, S. Design and Applications of Analog Integrated Circuits, Prentice Hall, Upper SaddleRiver, N.J., 1991.Hardware and Software RequirementsCircuit connections to the DAQ require a cable and a facility for connecting to individual pins.An efficient system is based on a National Instruments Connector Block (CB-68LP) and a basiccircuit board as shown here.Connections to the circuit board from the connector block are made one time. The tworesistors of the circuit are connected to output channels 0 and 1, respecively. Thus, forexample, Chan0_out, as noted, is dedicated to the top strip on the circuit board. The bottomtop strip is associated with Chan0_in, and so forth.All of the project LabVIEW files are programmed to be consistent with the plus bus (rail),Chan0_out, and the minus bus (rail), Chan1_out. Therefore, it is intuitively helpful to have theoutput channels physically connected in this fashion.The project examples included with the book were conducted on a special circuit box thatconnects directly to the shielded 68-pin connector. This bypasses the connector block. Ashielded cable is strongly recommended in any event. Many of the projects involve themeasurement of relatively low voltage signals.In addition, the lab projects included in the book require the following (or equivalent):• Pentium PC (or equivalent).• National Instruments DAQ PCI-MIO-16E-4.• LabVIEW 6.0i Student Edition or LabVIEW 6.0i or later version.• Mathcad Professional 2001 or later version.• National Instruments Shielded 68-pin Cable.Semiconductor Devices and Components (Recommended)
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Protection and control devices ppt

PROTECTION AND CONTROL DEVICES PPT

Electrical and mechanical durabilityMechanical durabilityThe mechanical durability of an apparatus is expressed by the number of no-load operating cycles (each operating cycle consists of one closing and openingoperation) which can be effected before it becomes necessary to service orreplace any of its mechanical parts (however, normal maintenance may bepermitted).Electrical durabilityThe electrical durability of an apparatus is expressed by the number of on-loadoperating cycles and gives the contact resistance to electrical wear under theservice conditions stated in the relevant product Standard.2.3 Types of releases2.3.1 THERMOMAGNETIC RELEASES AND MAGNETIC ONLY RELEASESThe thermomagnetic releases use a bimetal and an electromagnet to detectoverloads and short-circuits; they are suitable to protect both alternating anddirect current networks.The following table shows the available rated currents and the relevant magneticsettings.A circuit-breaker must control and protect, in case of faults or malfunctioning,the connected elements of a plant. In order to perform this function, afterdetection of an anomalous condition, the release intervenes in a definite timeby opening the interrupting part.The protection releases fitted with ABB SACE moulded-case and air circuit-breakers can control and protect any plant, from the simplest ones to thosewith particular requirements, thanks to their wide setting possibilities of boththresholds and tripping times.Among the devices sensitive to overcurrents, the following can be considered:• thermomagnetic releases and magnetic only releases;• microprocessor-based releases;• residual current devices.
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Fundamentals of Robotic Mechanical Systems: Theory, Methods, and Algorithms doc

FUNDAMENTALS OF ROBOTIC MECHANICAL SYSTEMS THEORY METHODS AND ALGORITHMS DOC

trum of knowledge, the scope of this book being only a narrow band of thisspectrum, as outlined below.Contemporary robotics aims at the design, control, and implementation1Not all thinking processes are algorithmic—translation of the author—p ersonal communication during the Symposium on the Brain-Mind Problem. ATribute to Professor Mario Bunge on His 75th Birthday, Montreal, September30, 1994.TLFeBOOKxii Preface to the First Editionof systems capable of performing a task defined at a high level, in a lan-guage resembling those used by humans to communicate among themselves.Moreover, robotic systems can take on forms of all kinds, ranging from themost intangible, such as interpreting images collected by a space sound, tothe most concrete, such as cutting tissue in a surgical operation. We can,therefore, notice that motion is not essential to a robotic system, for thissystem is meant to replace humans in many of their activities, moving beingbut one of them. However, since robots evolved from early programmablemanipulators, one tends to identify robots with motion and manipulation.Certainly, robots may rely on a mechanical system to perform their in-tended tasks. When this is the case, we can speak of robotic mechanicalsystems, which are the subject of this book. These tasks, in turn, can beof a most varied nature, mainly involving motions such as manipulation,but they can also involve locomotion. Moreover, manipulation can be assimple as displacing objects from a belt conveyor to a magazine. On theother hand, manipulation can also be as complex as displacing these objectswhile observing constraints on both motion and force, e.g., when cuttinglive tissue of vital organs. We can, thus, distinguish between plain manipu-lation and dextrous manipulation. Furthermore, manipulation can involvelocomotion as well.
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state university of new york press after lacan clinical practice and the subject of the unconscious oct 2002

STATE UNIVERSITY OF NEW YORK PRESS AFTER LACAN CLINICAL PRACTICE AND THE SUBJECT OF THE UNCONSCIOUS OCT 2002

does not come easily; it is still a work in progress. For many NorthAmericans, this continuous interrogation within Lacanian thought addsto a confusion already fueled by differences in vocabulary and approach.It is easy to treat a theory that is foreign as both opaque and monolithic,but although Lacanian thought is difficult and is different, it is neitheropaque nor monolithic, and it is far from being a settled, finished dis-course ready for full appropriation. Rather Lacanian thought introducesa discipline, a certain set of inquiries, a way of understanding the stakesof the psychoanalytic process that are unique and viable for theory and,as these chapters indicate, for the clinic. Those who are aligned withLacan bring a certain set of presuppositions to their work and these pre-suppositions run through many strains of Lacanian thinking.Introduction 9The body is conceptualized uniquely in Lacanian thought, where it ismost certainly socially constructed (see Colette Soler 1995).There is in-deed a “bio-logic” of the body, but there is also another logic, introducedby the signifier, that installs a radical break between the biological bodyand the parle-être, thus rendering the subject as a lack in being—and atone level split, unknown to him or herself. Psychoanalysis must concep-tualize this subject through the relationship between jouissance and theOther as the locus of the signifier.Jouissance even as it is translated as “enjoyment,” entails an under-standing of what Lacan called the “death drive.” It is surely fair to saythat Lacanians are more preoccupied with this aspect of psychic struc-ture than are many other schools in the United States, which would in-stead have repetition appear primarily as a pathological effect. Thestructure of jouissance—its effects through fantasy, symptom, transfer-ence, and the signifier—frame the economic question in psychoanaly-sis, the positioning through which the body is given over to being. ForLacanians, the formulations of jouissance are considered a bit more pre-
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Silicon Carbide Materials Processing and Applications in Electronic Devices Part 1 docx

SILICON CARBIDE MATERIALS PROCESSING AND APPLICATIONS IN ELECTRONIC DEVICES PART 1 DOCX

dual disorder, namely chemical and topological disorder, in a-SiC definitely complicates the analysis of amorphous structure and the underlying atomic mechanisms. In general a truly atomistic model of plastic flow in amorphous covalent materials is still lacking. Instead of starting with complete a-SiC where widespread inhomogenities frozen into the entire material, we rather begin with a perfect 3C-SiC, then proceed to gradually increase the concentration of damage until a complete amorphous state is reached. Being a link between perfect crystalline and complete amorphous SiC, partially disordered SiC presents a favorable prototype to discern the role of isolated or clustered defects in the evolution of atomic mechanism, where the deformation defects are comparatively readily to identify. In this chapter, we first outline the studies concerning the c-a transition of irradiation-amorphized SiC, laying the basis for the analysis of SiC amorphous. Then a complete topological description of simulated SiC structures ranging from c-a is presented in both the short – and medium-range with a special focus on the correlation between chemical disorder and the topology of a-SiC. Simulated tensile testing and nanoindentation are carried out on the varying a-SiC to examine the variations of mechanical response with varying concentration of defects. The correlation between some key mechanical properties of a-SiC, such as Young’s modulus, strength, hardness, and the microstructure are quantified by virtue of chemical disorder, an characteristics underpinning the c-a transition. A crossover of atomic mechanisms from c-a are also discussed. This crossover is also embodied in the switch of the fracture . 2. Amorphization mechanism of irradiation-amorphized SiC With regard to the characterization of the varying disordered microstructures of a-SiC, the mechanisms controlling the c-a transformation have been of particular interest. By simulating the accumulation of irradiation damages due to the low energy recoils, Malerba Silicon Carbide – Materials, Processing and Applications in Electronic Devices 6 and Perlado(Malerba, L. & Perlado, J. M., 2001) argued that both Frenkel pairs and antisite
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lessons in electric circuits 3 Semic

LESSONS IN ELECTRIC CIRCUITS 3 SEMIC

AMPLIFIERS AND ACTIVE DEVICES 1 1.1 F rom electric to electronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Active versus passive devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 Ampli¯ers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.4 Ampli¯er gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.5 Decibels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.6 Absolute dB scales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2 SOLIDST ATE DEVICE THEOR Y 15 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.2 Quantum physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.3 Band theory of solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2.4 Electrons and holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2.5 The PN junction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2.6 Junction diodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2.7 Bipolar junction transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 2.8 Junction ¯elde®ect transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 2.9 Insulatedgate ¯elde®ect transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 2.10 Thyristors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 2.11 Semiconductor manufacturing techniques . . . . . . . . . . . . . . . . . . . . . . . . 34 2.12 Superconducting devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 2.13 Quantum devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 2.14 Semiconductor devices in SPICE . . . .
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Tài liệu Thiết kế mạch dùng Protel pdf

TÀI LIỆU THIẾT KẾ MẠCH DÙNG PROTEL PDF

2. - Chemical Process3. - Computer Aided Design4. - Using PROTEL-PCB5. - Example6. - Appendix7. - Library PartsINTRODUCTIONHaving gone through the process and struggle to design an electronic circuit,which should result in the form of a circuit diagram, you have reached the stageof needing to create your circuit at a physical level. Printed circuit board designcould be difficult as well, since you may include mistakes from your circuitdiagram and possibly create some more with this procedure (unless you are verycareful). But relax creating a PCB could (hopefully) be a nice expression of yourtechnical capabilities as well as an expression of your artistic skills.A PCB is the most common, practical, reliable and low cost (in particular forlarger quantities) solution to assemble a cluster of electronics components (see #1other techniques). The aim of PCB design is to physically place and interconnect(using conductive tracks acting as wires) electronic components on an insulatingmaterial according to the plans in the circuit diagram (or schematic).CHEMICAL PROCESSIn practice we do not actually print the physical circuit on a board, this is usuallyachieved by means of a photographic and chemical process (see #2 for othertechniques).The board is usually made of a glass fibre strengthened epoxy based material(sheet) with good electrical and mechanical properties (ie.: good insulator andhigh mechanical strength).The epoxy board is covered with a very thin copper layer either on one (singlesided boards) or on both sides (double sided boards) which we have to configurein such a way so that the copper can be used as individual conductors (see #3 formulti layers). This is usually achieved with the aid of an additional UV light
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circuit analysis theory and practice

CIRCUIT ANALYSIS THEORY AND PRACTICE

3. Substitute the known information into the selected equation(s) and solve forthe unknown. (For complex problems, the solution may require a series ofsteps involving several concepts. If you cannot identify the complete set ofsteps before you start, start anyway. As each piece of the solution emerges, youare one step closer to the answer. You may make false starts. However, evenexperienced people do not get it right on the first try every time. Note also thatthere is seldom one “right” way to solve a problem. You may therefore comeup with an entirely different correct solution method than the authors do.)4. Check the answer to see that it is sensible—that is, is it in the “right ball-park”? Does it have the correct sign? Do the units match?PUTTING IT INPERSPECTIVE1.1 IntroductionTechnology is rapidly changing the way we do things; we now have comput-ers in our homes, electronic control systems in our cars, cellular phones thatcan be used just about anywhere, robots that assemble products on produc-tion lines, and so on.A first step to understanding these technologies is electric circuit theory.Circuit theory provides you with the knowledge of basic principles that youneed to understand the behavior of electric and electronic devices, circuits,and systems. In this book, we develop and explore its basic ideas.Before We BeginBefore we begin, let us look at a few examples of the technology at work.(As you go through these, you will see devices, components, and ideas thathave not yet been discussed.You will learn about these later. For the moment,just concentrate on the general ideas.)As a first example, consider Figure 1–1, which shows a VCR. Its designis based on electrical, electronic, and magnetic circuit principles. For exam-ple, resistors, capacitors, transistors, and integrated circuits are used to con-trol the voltages and currents that operate its motors and amplify the audio
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Tài liệu Lecture 28: Trunks and Multiplexing: pptx

TÀI LIỆU LECTURE 28: TRUNKS AND MULTIPLEXING: PPTX

• Other standards also exists - up to 230000 voice channels together (4x230000 = 920000 kHz Bandwidth) Time Division Multiplexing: (Chapter-3) Time Division Multiplexing is used by the digital system where as FDM is used by the analogue system. In TDM one character is taken from each terminal in turn and transmitted down the circuit. The analog signals are digitized in the end office by a device called a codec (coder-decoder). The codec makes 8000 samples per second because Nyquist theorem says that this is sufficient to Lecture28.doc Page 3 (7) CSN200 Introduction to Telecommunications, Winter 2000 Lecture-28 Multiplexing reproduce the original information back (4 kHz voice signal). The sampling rate should be at least double the frequency of the signal being sampled. • TDM is a digital technique in which different digital signals take turns using the available channel. • Each signal uses the entire bandwidth for a short time and then waits for its turn again. • Data from different signals is interleaved; each signal having its own timeslot, much like boxcars on a train where each car carries freight for one user. The difference is that the sequence of boxcars repeats itself endlessly. • TDM generally more efficient than FDM, because it does not need guard bands. Guard bands could be used to transmit data. • TDM systems may waste bandwidth if all time slots are not unused. North America’s T Carrier Digital Circuits form an interconnected synchronous digital communications system of leased circuits using Time Division Multiplexing. T Carrier Circuit Voice
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