High-Power LED Constant Current Dimming Circuit Design

2012 ◽  
Vol 182-183 ◽  
pp. 411-415
Author(s):  
Jun Sun ◽  
Bo Xiang ◽  
Ping Zhou ◽  
Xiu Ying Wang
Keyword(s):  
Circuit Design ◽  
Software Design ◽  
High Power ◽  
Design Method ◽  
Design Approach ◽  
Constant Current ◽  
Design Requirement ◽  
Digital Potentiometer ◽  
Hardware Circuit ◽  
Electronic Design

In this paper, an adjustable constant current circuit is designed by combining the digital potentiometer X9312 and the microcontroller 89C52. We first introduce the overall component and structure of the constant current dimming circuit which needs to be designed. Then, the hardware circuit design and the software design are discussed in detail. Based on the proposed design method, the manufacturing and the testing of the prototype machine are taken at last. The testing results are satisfactory, and meet the design requirement. The proposed design approach has won award in 2009 National Undergraduate Electronic Design Contest.

Design method for high power and low noise intelligent adjustable constant current source

2018 ◽  
Vol 33 (9) ◽  
pp. 778-786
Author(s):  
季志博 JI Zhi-bo ◽  
王辉 WANG hui ◽  
王磊 WANG lei ◽  
董兴法 DONG Xin-fa ◽  
王军 WANG Jun
Keyword(s):  
High Power ◽  
Design Method ◽  
Current Source ◽  
Low Noise ◽  
Constant Current ◽  
Constant Current Source

Software Design Method for Small Real Time Systems Using Modified Pro-Nets

1992 ◽  
Vol 25 (25) ◽  
pp. 263-265
Author(s):  
B.R. Andrievsky ◽  
A.A. Vasiljev ◽  
V.N. Utkin
Keyword(s):  
Real Time ◽  
Software Design ◽  
Design Method ◽  
Real Time Systems ◽  
Time Systems

Cleaning Robot Design and its Application in Electronic Course Group Training

2014 ◽  
Vol 1079-1080 ◽  
pp. 1045-1048
Author(s):  
Dan Li ◽  
Wei Xu
Keyword(s):  
Circuit Design ◽  
General Structure ◽  
Engineering Practice ◽  
Group Training ◽  
Cleaning Robot ◽  
Professional Interest ◽  
Innovation Ability ◽  
Innovative Work ◽  
Autonomous Movement ◽  
Hardware Circuit

This paper describes the design of household intelligent cleaning robot, which is an innovative work of collegiate contest. This paper describes the general structure of system, hardware circuit design and software program design. The robot can achieve autonomous movement, garbage cleaning, obstacle avoidance and other functions. It can work in the home, library, exhibition halls and other indoor environment. This design, which is applied to the training of electronic course group, not only cultivates the students' professional interest but also improves the students' engineering practice ability and innovation ability. This design has been successfully used in the electronic course group training of application-oriented universities

Development of Back-to-Back Flexible HVDC Prototype Based on MMC

2013 ◽  
Vol 397-400 ◽  
pp. 1808-1813
Author(s):  
Cheng Feng ◽  
Da Li Wang ◽  
Jin Li
Keyword(s):  
Circuit Design ◽  
High Power ◽  
Working Condition ◽  
Protection Strategy ◽  
Hvdc System ◽  
Fault Protection ◽  
The World

With the development of flexible HVDC technology in the world, back-to-back HVDC system based on MMC topology have more attention. A high power back-to-back flexible HVDC prototype has been developed to assess performance and reliability of construction of converter valve segment. Valve normal working condition (rated conditions rated voltage, current, temperature), valve transient working condition (temporary overvoltage, overcurrent), valve fault protection and anti-interference ability are accessed. Performance and reliability of control and protection equipment are assessed. The design of control and protection strategy is optimized. The correctness of main circuit design is tested.

A CMOS combinational circuit-design method using mixed logic concepts

1995 ◽  
Vol 38 (3) ◽  
pp. 266-273 ◽  
Author(s):  
W.B. Hudson ◽  
J.S. Beasley ◽  
J.E. Steelman
Keyword(s):  
Circuit Design ◽  
Design Method ◽  
Combinational Circuit

Design of the Half-Bridge Switching and Regulated Power Supply Based on PWM

2012 ◽  
Vol 546-547 ◽  
pp. 352-356
Author(s):  
Jian Wei Liang ◽  
Yin Feng Wu ◽  
Ling Liang
Keyword(s):  
Software Design ◽  
Power Supply ◽  
Pulse Width ◽  
Power Supply System ◽  
Control Unit ◽  
Supply System ◽  
Microprocessor Control ◽  
Modeling Simulation ◽  
Power Simulation ◽  
Hardware Circuit

The article introduces the design of the half-bridge switching and regulated power supply system which is based on PWM. The design mainly consists of regulated power supply’s structure of basic hardware circuit, its working principles and the process of modeling simulation and software design. The control circuit controls SG3525 chip to output PWM wave through the Microprocessor Control Unit (MCU) of AT89C51 and drives IGBT through the chip of EXB841 as well. The MCU is also used to realize the keyboard process and controls of the pulse width and frequency. Taking advantage of Simulink (dynamic simulation Toolbox) and SimPowerSysterm (power simulation Toolbox) of MATLAB, it simulates the designed regulated power supply. According to the simulation result of this design, the system has high stability and good output waveform. The operation of the design is simple and clear with less software operation and higher speed.

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