sábado, 18 de maio de 2024
sexta-feira, 17 de maio de 2024
Pspice Simulation Power Supply with Current Type Single-Ended Flyback Output with UC3845
FLYBACK CONVERTER
The single-ended flyback switching power supply has been widely used in the power supply of automatic control and intelligent instrument because of its advantages of simple structure and few components . The duty cycle of the power MOSFET is regulated by pulse width modulation (PWM) technology to stabilize the output voltage. This circuit used a high-performance integrated control chip UC3845 as a pulse width modulation device. Its main features are an internal oscillator, high-precision error comparator, cycle-by-cycle current sampling-comparison, low start-up current, high-current totem pole output, etc., which are ideal devices for driving MOSFETsquarta-feira, 15 de maio de 2024
VYSOKÉ UČENÍ TECHNICKÉ V BRNĚ BRNO UNIVERSITY OF TECHNOLOGY FAKULTA ELEKTROTECHNIKY A KOMUNIKAČNÍCH TECHNOLOGIÍ FACULTY OF ELECTRICAL ENGINEERING AND COMMUNICATION ÚSTAV RADIOELEKTRONIKY DEPARTMENT OF RADIOENGINEERING -DC-DC MĚNIČ PRO MATRIX BEAM- MODUL DC-DC CONVERTER FOR MATRIX BEAM MODULE DIPLOMOVÁ PRÁCE MASTER'S THESIS AUTOR PRÁCE AUTHOR Bc. Roman Sikora
VYSOKÉ UČENÍ TECHNICKÉ V BRNĚ BRNO UNIVERSITY OF TECHNOLOGY FAKULTA ELEKTROTECHNIKY A KOMUNIKAČNÍCH
TECHNOLOGIÍ
FACULTY OF ELECTRICAL ENGINEERING AND COMMUNICATION
ÚSTAV
RADIOELEKTRONIKY
DEPARTMENT OF RADIOENGINEERING
DC-DC MĚNIČ PRO MATRIX BEAM MODUL
ABSTRACT
The master thesis deals with the development of buck-boost DC-DC converter which
supplies matrix beam module. The design is focused on testing two-phase boost converter
and three channel buck converter manufactured by NXP Semiconductors. Part of the
design is implementation of microcontroller for converter control and communication
with computer. Part of the thesis is also to design user interface on Windows platform
for easy system configuration. Next thing the thesis deals with is designing load for
DC-DC converter that is variable and can make different current consumption. One part
of this thesis is focused to achieve the lowest conducted emissions and to maximize
conducted immunity. Part of this project is production of a prototype and prototype
testing.
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terça-feira, 14 de maio de 2024
domingo, 5 de maio de 2024
Developing inexpensive and 40% improved lithium-ion batteries-KAIST-NEWS-Korea Advanced Institute of Science and Technology
Professor Seo Dong-hwa, Department of Materials Science and Engineering
In this study, Professor Jinhyuk Lee of McGill University participated as a co-corresponding author , and Eunryeol Lee, a postdoctoral researcher at UC Berkeley ( Ph.D. candidate in the Department of Energy and Chemical Engineering at UNIST at the time of the study ), and Daehyeong Lee , a doctoral candidate in the Department of Materials Science and Engineering at KAIST , participated as co- first authors . In addition , doctoral student Sangwook Park and master's student Hojun Kim of the Department of Materials Science and Engineering at KAIST participated as co-authors . The research was carried out with support from the National Research Foundation of Korea's basic research project in the field of science and technology , nano and material technology development project , original technology development project, and the energy human resources training project of the Ministry of Trade, Industry and Energy , and with the support of a supercomputer from the Korea Institute of Science and Technology Information. It was received and carried out .
The research results were published online on March 27th in the international energy journal ' Energy & Environmental Science ' and are scheduled to be published as the cover paper for the June issue . ( Paper title : Nearly all-active-material cathodes free of nickel and cobalt for Li-ion batteries).
ORIGINAL SOURCE: https://www.kaist.ac.kr/news/html/news/?mode=V&mng_no=36490
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