On August 27th, 2013 East China LED Lighting Supply Chain Good Product Tour Seminar and High-tech Golden Globe Awards Annual LED Good Product Recruitment Activities gathered in Hangzhou West Lake. On this day, nearly 200 LED industry insiders in Hangzhou and surrounding areas gathered in Hangzhou Wan Hua International Hotel will discuss how to grasp the positioning of LED lighting companies.
This seminar invited Gong Wen, general manager of Jingtai Optoelectronics, Li Zhaohua, deputy general manager of Mingwei Electronics, Lu Dawei, chief engineer of Zhejiang Yuanda Electronics, Hua Shunxiang, general manager of Zhongheng Paiwei Power Sales Department, and Qi Kaitai, general manager of Likoda Optoelectronics. Liu Yanfeng, deputy general manager of the inductive testing, made a wonderful keynote speech and discussed in depth the positioning and optimization of the supply chain for the positioning of small and medium-sized enterprises.
Li Zhaohua, deputy general manager of Mingwei Electronics, compared the advantages and disadvantages of the LED driver circuit topology:
This seminar invited Gong Wen, general manager of Jingtai Optoelectronics, Li Zhaohua, deputy general manager of Mingwei Electronics, Lu Dawei, chief engineer of Zhejiang Yuanda Electronics, Hua Shunxiang, general manager of Zhongheng Paiwei Power Sales Department, and Qi Kaitai, general manager of Likoda Optoelectronics. Liu Yanfeng, deputy general manager of the inductive testing, made a wonderful keynote speech and discussed in depth the positioning and optimization of the supply chain for the positioning of small and medium-sized enterprises.
Li Zhaohua, deputy general manager of Mingwei Electronics, compared the advantages and disadvantages of the LED driver circuit topology:
| advantage | Disadvantage | |
| Isolated (PSR Flyback ) | No requirements for the safety of the luminaire | High cost, low efficiency |
| Non-isolated (buck-boost ) (buck ) | Low cost, high efficiency | High safety requirements for lamps |
| Linear constant current Linear | High production efficiency and easy integration | Need high voltage LED light and COB basic cooperation |
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