| Summary: | 碩士 === 建國科技大學 === 電機工程系暨研究所 === 103 === In this thesis, Flyback converters are used in indoor Light-Emitting Diode (LED) lighting. In recent years, due to the characteristics of LED is good and has been widely replaced traditional luminous lighting to become an integral part of modern life source. LED cannot driver by supply mains and need to supply through convert to work, so anti-held high-frequency circuit design a high efficiency converter to replace the traditional low-frequency, low-efficiency power conversion circuit, to reduce the size and weight and even promote efficiency function. Supply mains step down to a fixed voltage mains via Flyback converter and limit into LED lighting modules with current limit circuit to be protect LED lighting modules, thereby protecting LED lighting module. This thesis proposed LED driver circuit works, circuit design and simulation, and finally produced an output 30W, input AC 90 ~ 264 V, output DC 30 V, the constant current power supply circuit and via experiments confirmed its characteristics.
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