利用變壓器實現電子鎮流器的局部整流效應保護功能

摘要：采用高光效的熒光燈并匹配低能耗的電子鎮流器，目前仍是室內照明的首先產品。燈管管徑的適當變細，使燈的光效得到提高，但也造成了當制作不良或在燈壽命后期發生局部整流效應時造成的危害。本文提出了利用變壓器檢測異常時的信號，實現電子鎮流器在熒光燈出現局部整流效應時的保護功能。 敘詞：熒光燈 電子鎮流器 局部整流效應 變壓器 Abstract：Fluorescent lamps having high luminous efficacy equipped with electronic ballast having low power consumption is still the first choice among the indoor illuminating products at present. Proper thinning of the tube not only increases luminous efficacy of the lamp but also bring damage when the lamp is poorly made or at the end of the life. A way of detecting the signal in abnormal condition by transformer, thus realize protection function for electronic ballast when lamp meet rectifying effect situation is given in this paper. Keyword：Fluorescent, Electronic ballast, Rectifying effect, Transformer