“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

quinta-feira, 18 de fevereiro de 2016

A Design and Fabrication of PWM Power Amplifier for Digital Audio signal Jun-Sung, Lee Dept. of Electronical and Computer Engineering The Graduate School SungKyunKwan University




A Design and Fabrication of PWM Power
Amplifier for Digital Audio signal

Jun-Sung, Lee
Dept. of Electronical and Computer Engineering
The Graduate School
SungKyunKwan University

Amplifiers in electronics are used in a wide variety of applications in audio, video and telecommunications. Conventional amplifiers such as Class-A, Class-B, Class-AB based on linear circuit technology have good distortion characteristics, but yield poor efficiency and need large size of cooling material. On the other hand, the Class-D amplifier has good efficiency and small size, but relatively bad Total Harmonic Distortion(THD) and Signal to Noise Ratio(SNR) because of a switching mode operation. Recent researches have demonstrated the feasibility of realizing an almost complete digital audio system. The characteristics of THD and SNR of the Class-D amplifier depend on the duty ratio, rising falling and settling time of output PWM(Pulse Width Modulation) signals. This paper presents a one-chip monolithic integrated circuit(IC) of the two-channel Class-D audio power amplifier with high efficiency and lower THD using a 0.65[㎛], 40[V] bCDMOS process. Each channel can drive 50[W] power and a single channel power of 100[W] can be obtained through the external control signal. The Class-D amplifier at the output stage is controlled by generating a PWM signal. The conversion of the digital audio data to PWM pulse stream is performed by using PCM to PWM converter and results in the elimination of the THD. The results of the study are as follows: 1. The design and implementation of a 2-channel Class-D amplifier using 40[V] bCDMOS technology and the evaluation on the performance of designed class-D amplifier through fabricated wafer. ① The size of die is 3,700[㎛]×5,100[㎛]. The output power transistor occupies 60[%] of the die area. The output current driving capability and on-resistance are mainly considered features. ② The THD is 0.07[%] at 1[W] output power. ③ The Efficiency is 92[%] at 20[W] output power. The efficiency is getting worse when the output power is below 5[W] and above 35[W]. At a lower power consumption mode, the internal power takes up a larger portion of the total power. On the other hand, at a high power mode, power consumed by the resistance of bonding wire, routing metal and on-resistance of the MOS transistor are more dominant. These results are obtained by measuring selected samples out of packaged products. But, Some parts of the circuit need improvement before the mass production.
LINK
http://www.mediafire.com/view/ci41jtvncuyxdd0/PWM_POWER_AMPLIFIER.pdf

quarta-feira, 17 de fevereiro de 2016

TEORIA DE CIRCUITOS ELÉCTRICOS LINEALES CON EJERCICIOS Y TAREAS Autor: MR Shebes -Теория линейных электрических цепей в упражнениях и задачах Автор: Шебес М. Р.-1967




Descripción:
 El libro proporciona un material y fórmulas teórica breve, problemas típicos con soluciones y explicaciones detalladas, para la solución de tareas independientes. Un gran número de ejemplos muestra el uso de los métodos básicos de cálculo, tal como un circuito eléctrico en las condiciones estables y transitorias. Con un número significativo de problemas resueltos con diagramas vectoriales. Las técnicas que se muestran de su construcción. El manual está dirigido a los estudiantes de las escuelas eléctrica  y facultades de Ingeniería.
LINK
http://www.mediafire.com/view/krl6nzz34r0p4ie/TEORIA_DE_CIRCUITOS_LINEALES-SHEBA-1967.pdf

COLECCION DE PROBLEMAS DE INGENIERIA ELECTRICA Y ELECTRONICA -GERASIMOV-Сборник задач по электротехнике и основам электроники Герасимов В.Г. Зайдель X.Э. Коген-Далин В.В. -1987





LINK

TEORIA DE INGENIERA ELÉCTRICA MANZUROV-1966-Теоретическая электротехника Мансуров Н.Н. Попов В.С.


LINK
http://www.mediafire.com/view/s11i1u9i2iw1zau/TEORIA_INGENIERIA_ELECTRICA-MANZUROV-1966.pdf

PROBLEMAS DE MAQUINAS ELECTRICAS-M.M.KATZMAN-Сборник задач по электрическим машинам М.М. Кацман



LINK
http://www.mediafire.com/view/bnmq41j2999dd6h/PROBLEMAS_DE_MAQUINAS_ELECTRICAS-_KATZMAN.pdf

Design and Implementation of an SMPS for UPS Charging and Discharging System using the DC-DC buck converter method by Kim dong-Rok Department of Electronics & Mechatronics Engineering Graduate School of Industrial Technology and Management Korea Polytechnic University

Design and Implementation of an SMPS for UPS Charging and Discharging System using the DC-DC buck converter method by Kim dong-rok Advisor : Prof. Lee Sang-ho, Ph.D. Department of Electronics & Mechatronics Engineering Graduate School of Industrial Technology and Management Korea Polytechnic University
 The purpose of this paper is to develop the SMPS(Switched Mode Power Supply) for the implementation of the charge-discharge system of the UPS(Uninterruptible Power System) with the DC-DC buck converter. The proposed SMPS is designed to be able to switch two different output voltage levels and it has provided a circuit configuration for the two output voltage. This SMPS operated the generator circuit of the output voltage in response to the state of the High/Low of the output selected signal. As the rest of the circuit groups are not driven, unnecessary power consumption is minimized. The equipment with a high battery power is possible to charge by using the 2 fuse-2 outlet cable on the 12~70V DC area. The equipment with a low battery power is possible to charge by using the 8Fuse-8prong cable on the 12V DC area. Eventually, the developed SMPS system is capable of controlling by a simple switch as well as efficient.
LINK http://www.mediafire.com/view/hyxxmty5avzwr32/Design_and_Implementation_of_an_SMPS_for_UPS.pdf

sábado, 6 de fevereiro de 2016

XII-7-10 Power of A.C.Circuit(2015) Pradeep Kshetrapal Physics

XII_102.Transistor as Amplifier-Classroom lecture by Pradeep Kshetrapal. Language : English mixed with Hindi.

XII_100.Semiconductor, Transistor-Physics, Class XII Chapter : Semiconductor Topic : Transistor, Introduction Classroom lecture by Pradeep Kshetrapal. Language : English mixed with Hindi.

Lecture - 20 Bipolar Junction Transistor-Prof.K.Radhakrishna Rao, Department of Electrical Engineering,IIT Madras-INDIA



 Lecture Series on Electronics For Analog Signal Processing I by Prof.K.Radhakrishna Rao, Department of Electrical Engineering,IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in

Eletrônica Analógica aula 2-LABORATORIO AMPLIFICADOR OPERACIONAL-OPAMP

Eletrônica Analógica aula 1

Transistores BJT 03 Polarizacion y capacitador de acoplo y desacoplo



Electrónicos I con el profesor Sarmiento de la UNMSM-FACULTAD DE INGENIERIA ELECTRÓNICA

Transistores BJT 11 Tipos de Configuración- ING. SARMIENTO-FACULTAD ING. ELECTRÓNICA-UNMSM-LIMA-PERÚ




 CLASE DE CIRCUITOS ELECTRÓNICOS I -ING. SARMIENTO-FACULTAD DE INGENIERIA ELECTRÓNICA-UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOS- LIMA- PERÚ

sexta-feira, 5 de fevereiro de 2016

PSPICE Introdução a Simulação Eletrônica R.Heinemann -Визуальное моделирование электронных схем в PSPICE Хайнеманн Р. -PSPICE Einführung in die Elektroniksimulation-Carl Hanser Verlag München



  PSPICE Robert Heinemann software de simulação electrónica (quase) sem fronteiras: PSpice Este site contém as informações mais recentes sobre PSpice, que representa o padrão da indústria no software eléctricos e electrónicos por muitos anos. Você vai encontrar aqui todos os tipos de dicas e truques para a simulação com PSpice e exemplos selecionados de simulações de engenharia elétrica e eletrônica. A página destina-se principalmente a fornecer os leitores do meu livro PSpice, Introdução à simulação da eletrônica com material que foi encontrado no livro nenhum lugar, ou ainda não tinham disponíveis no momento da impressão.
Este  livro PSpice, Introdução à simulação Eletrônica inclui o OrCAD demonstração versão 16.0, com a simulação de Circuitos com um máximo de 60 componentes é possível. capa de livro PSPICE Introdução a Eletrônica Simulation 7, atualizada e ampliada edição de 2011 400 páginas, capa dura. Com o software de simulação em CD. Carl Hanser Verlag, Munique  O software funciona em Windows XP, Vista, 7; não com o Windows 8.
LINK VERSÃO ALEMÃO
http://www.spicelab.de/
LINK VERSÃO RUSA FORMAT DJVU
Визуальное моделирование электронных схем в PSPICE
Хайнеманн Р.
http://mexalib.com/download/15315