Title :
Impedance matching operation for the backlight of external electrode fluorescent lamps
Author :
Jeong, Jongmun ; Kim, Junghyun ; Jin, Dongjun ; Bong, Jaehwan ; Koo, Jehuan ; Hong, Byeonghee ; Choi, Eunha ; Cho, Guangsup
Author_Institution :
Dept. of Electrophys., Kwangwoon Univ., Seoul
Abstract :
The electric circuit of backlight operation has been analyzed with respect the impedance matching between the backlight of external electrode fluorescent lamps and a transformer of inverter. The resistance and capacitance of the system has been determined from phase difference between current and voltage and a Q-V Lissajous´ graph from oscilloscope signals. The coupling coefficient and inductance of the primary and secondary coils of the transformer has been introduced using LRC meter. Analytic solution of the impedance matching frequency are well in agreement with the experimental results.
Keywords :
capacitance; electric resistance; fluorescent lamps; impedance matching; inductance; invertors; transformers; LRC meter; Q-V Lissajous graph; backlight; capacitance; coupling coefficient; current; external electrode fluorescent lamps; impedance matching operation; inductance; inverter; oscilloscope signals; primary coils; resistance; secondary coils; transformer; voltage; Capacitance; Circuits; Coils; Electric resistance; Electrodes; Fluorescent lamps; Impedance matching; Inductance; Inverters; Oscilloscopes;
Conference_Titel :
Plasma Science, 2008. ICOPS 2008. IEEE 35th International Conference on
Conference_Location :
Karlsruhe
Print_ISBN :
978-1-4244-1929-6
Electronic_ISBN :
0730-9244
DOI :
10.1109/PLASMA.2008.4591089
