Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2003.07c
- /
- Pages.1710-1712
- /
- 2003
Luminous efficacy according to operating voltages of high flux RGB LEDs
고출력 RGB 발광다이오드의 구동전압에 따른 발광효율 비교
-
Song, Sang-Bin
(The Korea Association of Aids to Navigation)
;
- Kwon, Yong-Seok (Chonnam National University.HECS-RRC.POTRI) ;
- Im, Sung-Mu (Chonnam National University.HECS-RRC.POTRI) ;
-
Yeo, In-Seon
(Chonnam National University.HECS-RRC.POTRI)
-
송상빈
(한국항로표지기술협회)
;
- 권용석 (전남대학교.HECS-RRC.POTRI) ;
- 임성무 (전남대학교.HECS-RRC.POTRI) ;
-
여인선
(전남대학교.HECS-RRC.POTRI)
- Published : 2003.07.21
Abstract
This paper analyzes the effects of various operating voltages on the luminous efficacy of high flux RGB LEDs. At first, their equivalent diode model are established from measurements of the V-I characteristics. Operating voltages of three types are applied to a simple LED circuit: DC, square-wave, and full-wave-rectified sine wave. As the result, DC voltage driving gives the hightest efficiency, but invokes much greater variation in the luminous flux and more shift in the peak wavelength.
Keywords