“SE SEUS PROJETOS FOREM PARA UM ANO,SEMEIE O GRÂO.SE FOREM PARA DEZ ANOS,PLANTE UMA ÁRVORE.SE FOREM PARA CEM ANOS,EDUQUE O POVO.”

“Sixty years ago I knew everything; now I know nothing; education is a progressive discovery of our own ignorance. Will Durant”

OBRIGADO DEUS PELA VIDA,PROTEGENOS E GUARDANOS DE TODO MAL


AUTOR DO BLOG ENG. ARMANDO CAVERO MIRANDA SAO PAULO BRASIL

sexta-feira, 31 de janeiro de 2014

CONVERSOR DE ALTO GANHO ASSOCIADO A UM INVERSOR PARA APLICAÇÃO EM SISTEMA AUTÔNOMO DE ENERGIA ELÉTRICA ENG.Luiz Daniel S. Bezerra

Eng. Luiz Daniel S. Bezerra
CONVERSOR DE ALTO GANHO ASSOCIADO A UM INVERSOR
PARA APLICAÇÃO EM SISTEMA AUTÔNOMO DE ENERGIA
ELÉTRICA
Dissertação submetida à Universidade Federal
do Ceará como parte dos requisitos para
obtenção do grau de Mestre em Engenharia
Elétrica.
Orientador: Prof. Dr. René Pastor Torrico
Bascopé.
FORTALEZA-CEARA-BRASIL
https://www.mediafire.com/?mhk9o3f2qgg58jo

sábado, 25 de janeiro de 2014

PROJETO INVERSOL DESENVOLVIMENTO DE UMA FONTE ININTERRUPTA DE ENERGIA COM POSSIBILIDADE DE USO EM SISTEMA FOTOVOLTAICO -LUCAS MACIEL MENEZES

PROJETO INVERSOL
DESENVOLVIMENTO DE UMA FONTE ININTERRUPTA DE ENERGIA COM POSSIBLIDADE DE USO EM SISTEMA FOTOVOLTAICO
AUTOR: ENG. LUCAS MACIEL MENEZES
DISSERTAÇÃO SUBMETIDA A UNIVERSIDADE FEDERAL DE CEARA COMO PARTE DOS REQUISITOS PARA OBTENÇÃO DO GRAU DE MESTRE EM EMGENHARIA ELETRICA
ORIENTADOR DR. CICERO MARCOS TAVARES CRUZ
FULL THESIS
https://www.mediafire.com/?ccuoczi9gau7scc

SISTEMA FOTOVOLTAICO PARA ILUMINAÇÃO E ALIMENTAÇÃO DE PEQUENOS EQUIPAMENTOS EM CORRENTE CONTÍNUA FELINTO SÉRGIO FIRMEZA E SILVA- UNIVERSIDADE FEDERALDE CEARA BRASIL


 SISTEMA FOTOVOLTAICO PARA ILUMINAÇÃO E ALIMENTAÇÃO DE PEQUENOS EQUIPAMENTOS EM CORRENTE CONTÍNUA
 Dissertação de mestrado apresentada ao Programa de Pós-Graduação em Engenharia Elétrica do Centro de Tecnologia da Universidade Federal do Ceará, como parte dos requisitos para obtenção do grau de mestre. Prof. PhD Fernando Luiz Marcelo Antunes – Orientador Fortaleza Junho 2010


RESUMO: Este trabalho apresenta o desenvolvimento de um sistema fotovoltaico para alimentar cargas em corrente contínua, sendo aplicado para suprir com energia elétrica uma escola rural típica do estado do Piauí. O sistema composto por painel fotovoltaico, banco de baterias, carregador do banco de baterias e conversor CC/CC elevador para alimentar as cargas em corrente contínua, foi projetado para suprir a escola por dois dias, mesmo em condições mínimas de radiação solar. A energia solar é convertida em energia elétrica pelo painel solar e armazenada em um banco de baterias do tipo estacionária de chumbo ácido. O carregador de baterias possibilita a carga das mesmas no ponto de máxima potência (MPP) do painel. A topologia escolhida para o carregador foi um boost intercalado, a qual seu funcionamento pode ser comparado a dois conversores boost clássicos, trabalhando em paralelo, com defasamento de 180º entre os comandos dos interruptores. A carga é suprida através de um conversor CC/CC elevador de alto ganho. O projeto completo do sistema e seu controle são expostos. Finalmente são apresentados os resultados de simulação e os principais resultados experimentais do protótipo montado em laboratório e instalado em
FULL THESIS
https://www.mediafire.com/?s330ipbs6fs54cg

Centro Espacial de Kourou está entre os três melhores do mundo base francesa , na Guiana Francesa, LANÇAMENTO DE FOGUETES SOYUZ E ARIANE

PASSO A PASSO DA PRODUÇÃO DE TRANSFORMADORES DE ENERGIA

TESTE DE CONTROLE DE QUALIDE EM TRANSFORMADORES ELETRICOS

quarta-feira, 22 de janeiro de 2014

Los transformadores de potencia Autores: Lizunov SD, AK Lohani


El libro describe los principales aspectos prácticos de los transformadores modernos de alta tensión. Los autores han preparado y organizado los libros de consulta de materiales basado en su amplia experiencia y numerosas publicaciones en revistas nacionales y extranjeras. El libro está dirigido a los especialistas en el campo de los equipos de energía eléctrica, la ingeniería y personal técnico de las fábricas de transformación, personal de sistemas de energía asociados con la operación de los transformadores y también se pueden utilizar como un manual para los estudiantes de instituciones de educación superior del poder.
 Título: Los transformadores de potencia (Referencia de libros)
Autores: Lizunov SD, AK Lohanin etcétera Editorial: Energoizdat
 Año de publicación: 2004
Páginas: 616 Formato: DjVu Tamaño: 29.15 MB ISBN: 5-98073-004-4
 Calidad: Excelente
 Lenguaje: Ruso

ORIGINAL LINK
http://www.radiofiles.ru/news/silovye_transformatory_spravochnaja_kniga/2010-07-09-664
LINK
http://turbobit.net/ypdgitm2gn8p.html

Switch-Mode Power Supplies: SPICE Simulations and Practical Designs Christopher Basso



 Switch-Mode Power Supplies: SPICE Simulations and Practical Designs was released in 2008. Another book on power electronics you say? Not really. In the technical literature, you either have books that are purely academicals and offer in-depth analysis of converters, unfortunately without the essential links to the market reality. You also have purely practical books that pull equations out of thin air without any theoretical grounds. This book bridges both approaches and will hopefully please the power electronics student and the design engineer, both looking for analytical explanations but also for practical solutions when facing customer demands. This book is really about power supplies designs, with SPICE as a design companion. It covers dc-dc but also ac-dc converters. By the way, the ac-dc conversion in offline converters is made by the diodes bridge and the capacitor, the downstream converter is always a dc-dc, isn't it? Press release for the book announcement in French, English, German, Mandarin and Japanese!!
ORIGINAL LINK
http://cbasso.pagesperso-orange.fr/Spice.htm

Christophe Basso Christophe Basso - Engineering Director at ON Semiconductor (France)

Featured Engineer

Interview with Christophe Basso

Christophe Basso

Christophe Basso - Engineering Director at ON Semiconductor (France)
How did you get into electronics/ engineering and when did you start?
I started electronics when I was around 14. At that time, there was a plethora of hobbyist magazines describing how to build light-show stuff (so-called psychedelic modulators), power amplifiers, radio emitters etc. Friends were also bringing me things to repair and that’s how I started to learn electronics. I was also collecting antic radios from which I remember the glowing magic eye tube UM34. Trying to fix them was a funny exercise and I was tripping the breaker several times a week as these radios were poorly isolated. My first soldering iron was an Engel-Loeter, a quick heating type, having a pistol shape. I still have it but could no longer use it to solder SMD types! I bought my single-trace oscilloscope at 15, it was a Hameg HM307 that is still working.
What are your favorite hardware tools that you use?
The are several instruments that I use. The first one is an isolated high-voltage dc supply from Xantrex, a XHR600-1.7. This is really a simple and efficient tool if you are in the offline power conversion business. To test my converters, I team this power source with an electronic load from Agilent, an HP6063B. Unlike other instruments that we have, you don’t need to open the manual every time you need them. I also run a LeCroy Waverunner oscilloscope but I confess that I sometimes miss CRT-based devices for their speed and ease of use .
 What are your favorite software tools that you use?
I extensively use simulation tools such as Intusoft ICAPS but also mathematical tools such as Mathcad. Mathcad may not be the best of the available solvers, but it is easy to use and well spread among the engineers world-wide. At ON Semiconductor, where I work in France, we write a lot of design sheets with this software.
FULL INTERVIEW
http://www.eeweb.com/spotlight/christophe-basso

Switchmode Power Supply Handbook 3rd Edition By Keith H. Billings

Published In: United States, 01 February 2011 The most comprehensive book on power supply design - fully updated with the latest techniques. "Switchmode Power Supply Handbook, Third Edition" is a thoroughly overhauled edition of the industry-leading, practical guide for power supply designers. The book now addresses the new design techniques required for powering the small, high-performance electronic devices in use today. Based on the author's 45 years of experience, the book is filled with real-world solutions and avoids unnecessarily complicated mathematical derivations and theory.

terça-feira, 21 de janeiro de 2014

Eletrônica de Potência Zinoviev GS - Силовая электроника Зиновьев Г. С.


Descreve os princípios de conversão de energia elétrica em circuitos básicos retificação, inversão, a frequência de transformação e de tensão. Apresenta os fundamentos de métodos diretos para a análise dos processos de energia nos sistemas. As principais características de todos os circuitos básicos conversor. Os métodos de controle do conversor.
ORIGINAL LINK
http://www.radiofiles.ru/news/silovaja_ehlektronika/2013-03-21-2624
BOOK LINK
http://dfiles.ru/files/sv5u3eo5r

Cálculo e otimização de transformadores toroidal



O livro apresenta uma nova abordagem para o cálculo de transformadores toroidais, com base num modelo matemático desenvolvido pelos autores do transformador. Os problemas de otimização de transformadores toroidal sobre os critérios de peso mínimo, o custo, a eficiência máxima. Dada fórmulas de projeto para o cálculo da corrente de carga e irrupção de comutação atual. Com base em cálculos, tabelas compiladas principais transformadores de parâmetros ótimos. Dada programa de cálculo. Aplicado nas abordagens do livro e as conclusões podem ser estendidas para transformadores com nenhum projeto magnético toroidal.
ORIGINAL LINK
http://www.radiofiles.ru/news/raschet_i_optimizacija_toroidalnykh_transformatorov/2013-05-19-2736
BOOK LINK
https://www.mediafire.com/?n0gw0hv99dd3jti

Power Supply Devices and Systems of Relay Protection


ORIGINAL LINK
http://www.radiofiles.ru/news/power_supply_devices_and_systems_of_relay_protection/2013-10-04-2960
BOOK
http://dfiles.ru/files/4d4fbzzyh

Power Converters and AC Electrical Drives with Linear Neural Networks (Energy, Power Electronics, and Machines)


 ENCONTRE ESTE LIBRO SURFANDO EN LA WEB EN LA SIGUIENTE DIRECCION
http://www.radiofiles.ru/news/power_converters_and_ac_electrical_drives_with_linear_neural_networks_energy_power_electronics_and_machines/2013-10-01-2952
LINK
http://dfiles.ru/files/d1no8jo09

domingo, 19 de janeiro de 2014

Principles of transformer design - Still, Alfred



ORIGINAL LINK
https://archive.org/details/principlesoftran00stilrich

Electrodynamics - Yu. V. Novozhilov, Yu. A. Yappa.




 Electrodynamics - Yu. V. Novozhilov, Yu. A. Yappa. This book originated from our experience in teaching electrodynamics as part of a series of lectures in theoretical physics. The lectures were read at the Leningrad State University for all students of the physics faculty, both future theoreticians and experimenters.
ORIGINAL LINK
https://archive.org/details/NovozhilovYappaElectrodynamics

sexta-feira, 17 de janeiro de 2014

THE IMPLEMENTATION OF SINGLE-STAGE PFC SCHEME FOR THE LED POWER LIGHT APPLICATION Jen-Fu Chung


THE IMPLEMENTATION OF SINGLE-STAGE PFC SCHEME FOR THE LED POWER LIGHT APPLICATION Jen-Fu Chung Thesis for Master of Science Department of Electrical Engineering Tatung University
LINK
http://www.mediafire.com/view/86vatb3vvvnp3jr/PFC-LEDES.pdf

A Contact-Less Power Transfer System for the Elevator's Car Power Supply - Eung-Kyu Lim -Dept. of Electronics & Electrical Eng. Graduate School, Chung-Ang University



Abstract
A Contact-Less Power Transfer System for the Elevator's Car Power Supply Eung-Kyu Lim Dept. of Electronics & Electrical Eng. Graduate School, Chung-Ang University Supervised by Professor Yoon-Ho Kim, Ph.D Most elevators have hoisting ropes attached to the elevator car, which moves up and down in the hoist way on its guiderails. Each car requires power and signal lines. But, these lines tend to hang from elevator car like tail-code, which may result in crack and disconnection of power. In this research, by eliminating the tail code, the new approach for contact-less power transfer system is taken for safety. The contact-less power transfer system consist of contact-less transformer and inverter. The contact-less transformer is capable of providing power without actual mechanical contact as its structure is unique due to two winding wires separated by air gap. The high frequency inverter uses power resonance type to minimize its loss. Also, to maximize the effectiveness of contact-less inverter, core is installed below the first winding wire to minimize resistance increase of the second wire. The resonance inverter, which is capable of tracking changes in resonance inductance, was used to minimize any possible loss in power. This helped to control inverter to switch at zero current always. Then, the designed system is verified through simulation using Maxwell and ICAP4. Based on simulation analysis result, 1[KW] high frequency inverter and transformer are designed and used in the experiment.
LINK
https://www.mediafire.com/?x0q08a4t3rvdhe2

Семинар «Решения ANSYS для радиоэлектронной промышленности» 2013, Alain Michel-Seminario "Soluciones de ANSYS para la industria electrónica" en 2013, Alain Michel



"Visión general de la línea de productos de software ANSYS Electronic Solution»
21 de febrero 2013
Alain Michel, ANSYS Inc.

quinta-feira, 16 de janeiro de 2014

PID CONTROLLER IMPLEMENTATION BASED ON FPGA KIM YOUNG JUNG HONAM UNIVERSITY KWAN JU KOREA


PID CONTROLLER IMPLEMENTATION BASED ON FPGA KIM YOUNG JUN Directed by Prof. Choi Jong woon Dep. of information and Communication Engineering Graduate School,Honam University Kwan Ju,Korea
LINK DOWNLOAD
https://www.mediafire.com/?n5cmpiubrm46chh

segunda-feira, 6 de janeiro de 2014

Power Electronics Circuit Simulation - GeckoCIRCUITS


GeckoCIRCUITS



swiss rectifier-smallGeckoCIRCUITS is a circuit simulator that allows a power electronic system to be described on a system level. Besides its fast circuit simulation capability, GeckoCIRCUITS combines control modelling and thermal simulations via equivalent networks in an easy-to-use software package. GeckoCIRCUITS has its strengths in the extremely high simulation speed and its open interface. The software can be integrated into MATLAB/Simulink or other programming environments.

GeckoCIRCUITS is distributed as an open-source project for free use without additional cost. Additionally, we offer high-quality support and service contracts to GeckoCIRCUITS users and companies. Our commercial support package includes phone or email support, more detailed documentation as well as the implementation of customer specific software solutions. Please contact us, if you are interested in a service contract for GeckoCIRCUITS.

You can freely download the program here!
WEBSITE
http://www.gecko-research.com/geckocircuits.html

domingo, 5 de janeiro de 2014

Design and Implementation of High Efficiency, High Power Density Front-End Converter for High Voltage Capacitor Charger by Yonghan Kang


Design and Implementation of High Efficiency, High Power Density Front-End Converter for High Voltage Capacitor Charger by Yonghan Kang Thesis submitted to the Faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering Dr. Fred C. Lee, Chairman Dr. J. D. van Wyk Dr. Fred Wang April 15, 2005 Blacksburg, Virginia.
LINK THESIS
https://www.mediafire.com/?p7exycdv9mc4mo7

sábado, 4 de janeiro de 2014

Design of Inverter for LCD TV Backlight with Flat Fluorescent Lamp Jeongwook Hur


Design of Inverter for LCD TV Backlight with Flat Fluorescent Lamp Jeongwook Hur Department of Electronic and Computer Engineering Graduate School Dankook University Advisor : Professor Sungkyoo Lim ABSTRACT The liquid crystal display(LCD) TV market has been growing continuously and cost reduction is one of the biggest issues to increase its market share. The LCD needs backlight because it belongs to non emissive displays. The cold cathode fluorescent lamp (CCFL) and external electrode fluorescent lamp (EEFL) are widely used in backlight system for LCDs. But assembly of CCFL and EEFL backlight system is very complex. The flat fluorescent lamp (FFL) is a newly developed light source and it has a very simple structure. The LCD backlight can have a simple structure if the newly delvelop FFL is used as a light source. The backlight with FFL can be more cost effective than that of the backlights with CCFL or EEFL light sources. But the temperature behaviour of FFL backlights are different from the backlight with CCFL or EEFL light sources, which prohibits FFL backlight from being accepted as the backlight for commercial application. In this paper, the FFL inverter with level control block(LCB) circuit was proposed to overcome the operation of FFL at low temperature. The inverter using LCB was developed to drive LCD TV backlight system using FFL light source with reliability at all temperature range of operation. The electro-optical characteristics of the FFL backlight showed substantial improvement by driving FFL backlight with inverter adapting LCB circuit. The FFL striking time, the time for brightness stabilization, and FFL lamp current were able to adjusted so that it was possible to operate the LCD TV backlight using FFL light source with stability at wide temperature range.
TESIS COMPLETA
https://www.mediafire.com/?g0x499gjk29qt09
FUENTE ORIGINAL
http://lib.dankook.ac.kr/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000030783

A HIGH EFFICIENCY SINGLE STAGE FLYBACK CONVERTER FOR PLAMA DISPLAY PANEL PDP SUSTAINING POWER MODULE


A High Efficiency Single-Stage Flyback Converter for PDP Sustaining Power Module Kwang Min Yoo Dept.of Electronics and Computer Engineering Graduate School 
Dankook University  Advisor:Prof.Sung KyooLim 
ABSTRACT
Since AC PDP was invented atthe University ofIllinois in 1964,thePDP technology hasbeen developed remarkably and itsuccessfully entered FlatPanelDisplay(FPD)marketthanks toitsattractivemeritssuch aswideview angle,largescreen, high brightness,and thinness.PDP market-share becomes to bewiden in largesizedisplay marketbutitscostisstillhigh to compete with other FPDs,which is the most important issue left in PDP to be solved. The operation of PDP is divided into threeperiodsofsetup,addressing,and sustaining and its brightness information is defined by sustain pulse number.The sustaining power module takes charge of total power over 80% for sustaining operation. PDP power consumption is controlled by changing the total sustain number according to displayed images due to the low panel efficiency, which causes that the load current drawn by driving circuitis varying according to subfield changes and displayedimages.Consequently itisrequiredthatPDP sustain power supply should have good voltage regulations under dynamic load changes because the image qualities and discharge margins are seriously affected by the sustain voltage.To meet the requirements,one of the most widely used methods is two-stage method.Ithas cascade structure comprised of harmonic preregulator to reduce input current harmonics and DC/DC converterto regulate a outputvoltage. In this paper, a low cost PDP sustain power supply is proposed based on flyback topology. By using Boundary Conduction Mode(BCM) to control input current regulation, DCM condition can be metunderallload conditions.
LINK
https://www.mediafire.com/?pv8q5s38f1bcblb

sexta-feira, 3 de janeiro de 2014

Experimental and Numerical Analysis of a Simple Core Loss Calculation for AC Filter Inductor in PWM DC-AC Inverters

Experimental and Numerical Analysis of a Simple Core Loss Calculation for AC Filter Inductor in PWM DC-AC Inverters Kyoung-Jun Lee*, Honnyong Cha**, Jong-Pil Lee***, Dong-Wook Yoo***, and Hee-Je Kim† †*Dept. of Electrical Eng., Pusan National University, Busan, Korea **School of Energy Engineering, Kyungpook National University, Daegu, Korea ***Power Conversion & Control Research Center, KERI, Changwon, Korea
LINK
http://www.koreascience.or.kr/search/articlepdf_ocean.jsp?url=http://ocean.kisti.re.kr/downfile/volume/kipe/E1PWAX/2013/v13n1/E1PWAX_2013_v13n1_113.pdf

A Continuous Conduction mode/Critical Conduction Mode Active Power Factor Correction Circuit with Input Voltage Sensor-less Control


Abstract An active power factor correction (PFC) circuit is presented which employs a newly proposed input voltage sensor-less control technique operated in continuous conduction mode (CCM) and critical conduction mode (CRM). The conventional PFC circuit with input voltage sensor-less control technique degrades the power factor (PF) under the light load condition due to DCM operation. In the proposed PFC circuit, the switching frequency is basically 70KHz in CCM operation. In light load condition, however, the PFC circuit operates in CRM and the switching frequency is increased up to 200KHz. So CCM/CRM operation of the PFC circuit alleviates the decreasing of the PF in light load condition. The proposed PFC controller IC has been implemented in a 0.35μm BCDMOS process and a 240W PFC prototype is built. Experimental results shows the PF of the proposed PFC circuit is improved up to 10% from the one employing the conventional CCM/DCM dual mode control technique. Also, the PF is improved up to 4% in the light load condition of the IEC 61000-3-2 Class D specifications.
DOWNLOAD FULL PAPER LINKS
https://www.mediafire.com/?21j1gpjbrm9tki6

http://www.koreascience.or.kr/search/articlepdf_ocean.jsp?url=http://ocean.kisti.re.kr/downfile/volume/ieek/DHJJQ3/2013/v50n8/DHJJQ3_2013_v50n8_151.pdf

quinta-feira, 2 de janeiro de 2014

H-BRIDGE CONVERTER WITH ADDITIONAL SWITCH LEGS AND ITS APPLICATION TO AC-DC AND DC-AC CONVERSIONS


Abstract This dissertation proposes a new topology H-bridge converter with additional switch legs (HA converter). The proposed topology has simple circuit structure with expandability and flexibility. With six semiconductor devices and single inductor, the topology is capable of operating as buck, boost, and buck-boost converter. Theoretically, it demonstrates low common mode current and electromagnetic interference (EMI) by solidly connecting grounds of input and output terminals. The proposed topology is advantageous not only in grid-connected power conversion application but also in standalone power system such as electric vehicle, because these systems include large parasitic capacitances and are prone to high common mode EMI due to the wide mechanical structure of the conductor.
LINK THESIS
https://www.mediafire.com/?cmoqphbgd384328

Mercado de iluminação em desenvolvimento no BRASIL REVISTA O SETOR ELETRICO


Edição 93 - Outubro de 2013 Mercado de iluminação em desenvolvimento De acordo com a pesquisa publicada a seguir, o grau de satisfação dos consumidores com a qualidade dos produtos de iluminação disponíveis no mercado é baixo ou regular. A boa notícia é que, no caso dos Leds, a certificação compulsória já está a caminho Mais do que iluminar, os sistemas de iluminação devem prezar por requisitos que ganham cada vez mais importância no mundo moderno: qualidade e eficiência energética. Para se ter uma ideia, a pesquisa publicada, a seguir, consultou fabricantes e consumidores de equipamentos para iluminação e identificou que os usuários estão mais preocupados com a qualidade dos produtos que estão sendo disponibilizados no mercado. Na opinião dos consumidores, os equipamentos de iluminação encontrados não atendem plenamente às exigências do mercado. 69% dos entrevistados deram nota 6 ou 7 para o grau de satisfação com este setor. A pesquisa apurou ainda que, na opinião dos consumidores, garantia do fabricante, disponibilidade de informações técnicas e ter o selo Inmetro são os principais critérios considerados na hora de comprar ou especificar um produto de iluminação. Questionados quanto à tendência deste mercado, o Led, 59% dos usuários que participaram do levantamento afirmaram que esta será a principal fonte luminosa em até dez anos.
Clique aqui para fazer o download da pesquisa na íntegra.
LINK ARTIGO COMPLETO
http://www.osetoreletrico.com.br/web/documentos/guias_setoriais/ed-93_Pesquisa-Equipamentos-para-iluminacao.pdf

Reduction of Radiated Electromagnetic Interference in 4-Phases Pulse Width Modulation Converter System Hee-Jung Kim Yonsei University Department of Electrical and Electronic Engineering


Reduction of Radiated Electromagnetic Interference in 4-Phases Pulse Width Modulation Converter System A Master’s Thesis Submitted to the Department of Electrical and Electronic Engineering and the Graduate School of Yonsei University in partial fulfillment of the requirements for the degree of Master of Electrical and Electronic Engineering
LINK THESIS
https://www.mediafire.com/?wyilxbll1skbos9

GRANDE DATA CENTER BANCO SANTANDER CONQUISTA PRIMEIRA CERTIFICAÇÃO TIER IV DA AMÉRICA LATINA





FONTE ORIGINAL
http://www.arandanet.com.br/midiaonline/rti/2013/novembro/index.html