High Voltage CCFL Control Circuit

• Main Authors: Hsih-Hsiu Yeh, 葉時修
• Other Authors: Hung-Wei Chiu
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/h6mtdq

碩士 === 國立臺北科技大學 === 電子工程系碩士班（碩士在職專班） === 105 === Cold cathode fluorescent lamp (CCFL) used in lighting and corresponding application control are in many ways, it use in voltage converters (Inverter) which produce high voltages to meet CCFL gas discharge request usually, due to high voltage relative to low current, therefore lower temperature will extend the life cycle in working situation. CCFL is a mercury discharge lamp, it will be coated with powder within glass tube then inject of inert gas and a little mercury, once the power in, it give high voltage from both ends of the lamp, and impact of the electrode will release electrons, as result it need higher voltage to drive, according to different components and the proportion can adjust the CCFL wavelength and color. Using the Transistors and Pulse Width Modulation (PWM) to drive Direct Current voltage (DC) upgrade and adjust CCFL brightness, Through Push-Pull and Transformer to produce high voltage, these integration what we call Inverter is driver circuit conversion energy, the DC voltage is converted to Alternating Current voltage (AC) to achieve high voltage and low current performance.