The study of optical power control for driving circuit using the 650 nanometer low power semiconductor laser

2013 ◽  
Author(s):  
Zhen Zhou ◽  
Fengshuang Wang ◽  
Zhen Yang ◽  
Xiangrui Teng ◽  
Yong Qin
Keyword(s):  
Low Power ◽  
Power Control ◽  
Semiconductor Laser ◽  
Optical Power ◽  
Power Semiconductor ◽  
Driving Circuit

scholarly journals Basic Study of Photodynamic Therapy Using a Low Power Semiconductor Laser

1994 ◽  
Vol 15 (Supplement) ◽  
pp. 5-8
Author(s):  
Masahiko Kuroki ◽  
Hisao Tajiri ◽  
Takuya Hayashi ◽  
Masahiko Kobayashi ◽  
Shigeaki Nagao ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Low Power ◽  
Semiconductor Laser ◽  
Basic Study ◽  
Power Semiconductor

Imaging the near-field intensity gradients of a low-power semiconductor laser

1999 ◽  
Author(s):  
Nien H. Lu ◽  
Din Ping Tsai ◽  
Wei Y. Lin ◽  
H. J. Huang
Keyword(s):  
Low Power ◽  
Semiconductor Laser ◽  
Field Intensity ◽  
Near Field ◽  
Power Semiconductor

Analysis on High Temperature Characteristic of High Power Semiconductor Laser Array

2020 ◽  
Vol 41 (9) ◽  
pp. 1158-1164
Author(s):  
Bo LI ◽  
◽  
Zhen-fu WANG ◽  
Bo-cang QIU ◽  
Guo-wen YANG ◽  
...  
Keyword(s):  
High Temperature ◽  
Semiconductor Laser ◽  
High Power ◽  
Temperature Characteristic ◽  
Laser Array ◽  
Power Semiconductor

A Novel Two-phase Soft Starter Used for Three-phase Asynchronous Motors

2020 ◽  
Vol 13 (8) ◽  
pp. 1175-1182
Author(s):  
Jingwen Chen ◽  
Hongshe Dang
Keyword(s):  
Pulse Generation ◽  
Power Module ◽  
Two Phase ◽  
Power Semiconductor ◽  
Starting Current ◽  
Semiconductor Switches ◽  
Soft Starter ◽  
Three Phase ◽  
And Control ◽  
Driving Circuit

Background: Traditional thyristor-based three-phase soft starters of induction motor often suffer from high starting current and heavy harmonics. Moreover, both the trigger pulse generation and driving circuit design are usually complicated. Methods: To address these issues, we propose a novel soft starter structure using fully controlled IGBTs in this paper. Compared to approaches of traditional design, this structure only uses twophase as the input, and each phase is controlled by a power module that is composed of one IGBT and four diodes. Results: Consequently, both driving circuit and control design are greatly simplified due to the requirement of fewer controlled power semiconductor switches, which leads to the reduction of the total cost. Conclusion: Both Matlab/Simulink simulation results and experimental results on a prototype demonstrate that the proposed soft starter can achieve better performances than traditional thyristorbased soft starters for Starting Current (RMS) and harmonics.

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