Fabrication and Testing of a Frequency Modulated Dimming Electronic Ballast

• Main Authors: Jiun-Liang Su, 蘇峻良
• Other Authors: Dan Chen
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/10665540121093626487

碩士 === 國立臺灣大學 === 電機工程學研究所 === 97 === In recent years, the dimming capability of a fluorescent ballast has become an important feature for the energy-conscious consumers. In this thesis, a brief review was given to standard electronic ballast circuits and the various dimming schemes reported. An experimental prototype was fabricated based on SGS-Thomson Company''s integrated circuit L6574. The power circuit configuration used was a half-bridge parallel resonant inverter and frequency- modulation scheme was used for dimming capability. Design details and experimental waveforms were given and dimming capability was demonstrated.