Title :
Development of operating circuit for LED lamp composed of diodes and capacitors
Author :
Nakamura, Yuta ; Wei, Cixin ; Yamaguchi, Tomohiro ; Watanabe, Yoshio
Author_Institution :
Kanagawa Univ., Yokohama, Japan
Abstract :
The operating circuit for a LED lamp composed of diodes and d.c. capacitors only is proposed. The proposed circuit idea is based on a double-voltage rectifier circuit and a Cockcroft-Walton circuit. The proposed circuits can operate LED without flicker, and is free from R-F noise since high frequency operating circuit is not used. To replace an a.c. capacitor by a d.c. capacitor for the ballast, a diode is connected across the capacitor in parallel, and its operating voltage of LED unit is kept at the value greater than the peak voltage of the input power source.
Keywords :
LED lamps; capacitors; lamp accessories; power semiconductor diodes; rectifying circuits; AC capacitor; Cockcroft-Walton circuit; DC capacitors; LED lamp; RF noise; ballast; diodes; double-voltage rectifier circuit; high frequency operating circuit; power source; Capacitance; Capacitors; Converters; Electronic ballasts; LED lamps; Rectifiers;
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-61284-969-0
DOI :
10.1109/IECON.2011.6120082
