本文分析與設計單級高功因螢光燈電子式安定器電路，此單級電路架構結合升壓型功因修正電路和半橋串聯諧振並聯負載諧振式轉換器，升壓型功因修正電路的電感電流操作在不連續導通模式，使輸入電流能追隨輸入電壓達到高功率因數；半橋串聯諧振並聯負載諧振式轉換器提供螢光燈啟動時所需的高壓脈衝及穩態時燈管所需的功率。本文之單級高功因電子式安定器具有高功因的功能，可減少元件使用數，達到低成本的優點，並使熱能平均分散在兩個功率開關上。最後實際製作一組36W 單級高功因螢光燈電子式安定器電路，將實測結果與電腦模擬波形作比較與分析，以驗證電路的設計理論。

A single-stage high-power-factor electronic ballast used to drive fluorescent lamps is analyzed and designed in the thesis. The circuit configuration of the single-stage ballast is a combination of a boost-type power-factor-corrector and a series-resonant parallel-loaded inverter. The boost-type converter operated in discontinuous nduction mode (DCM) has the functionality of input current shaping, therefore, high power factor can be achieved. The series-resonant parallel-loaded inverter provides a sufficient high voltage to the lamp during startup period and rated power at steady state. The features of the ballast are low cost, high power factor, acceptable crest factor, zero-voltage switching, and identical current stress imposed on each power switch. Finally, a prototype of 36W electronic ballast is built and tested. The performance of the ballast circuit is demonstrated by simulation and experimental
sults.

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