Title :
A Novel Dimming Technique for Cold Cathode Fluorescent Lamp
Author :
Hwu, K.I. ; Chen, Y.H.
Author_Institution :
Dept. of Electr. Eng., Nat. Taipei Univ. of Technol., Taipei, Taiwan
Abstract :
In this paper, a simple dimming control is presented and applied to a cold cathode fluorescent lamp (CCFL). Traditionally, the digital dimming takes back-and-fro start and cutoff of the CCFL, thereby causing current spike and hence reducing the life of the CCFL. Consequently, to overcome these problems, a dimming strategy is presented according to the frequency shift. Moreover, a full-bridge phase-shift resonant inverter is utilized to power the CCFL. Some experimental results are provided to demonstrate the effectiveness of the proposed scheme.
Keywords :
cold-cathode tubes; fluorescent lamps; resonant invertors; CCFL; back-and-fro start; cold cathode fluorescent lamp; current spike; dimming technique; frequency shift; resonant inverter; Capacitance; Capacitors; Chromium; RLC circuits; Resonant frequency; Switching frequency; Cold cathode fluorescent lamp (CCFL); dimming; frequency shift;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2010.2071050
