Title :
Power supply system for fiber-optic subscriber loop transmission systems
Author :
Uno, Takayuki ; Fukuda, Yoshifumi ; Suzuki, Noboru ; Yamashita, Takashi
Author_Institution :
NTT Network Syst. Dev. Dept., Chiba, Japan
Abstract :
NTT has developed a small, lightweight, high-efficiency, and high-power-factor power supply system for fiber-optic subscriber loop transmission systems. The AC-DC converter in the power supply is a flyback converter that can correct the power factor and convert 100 V AC to -48 V DC in only one stage. The power supply has a volume of about 3700 cc, which is one-third that of the conventional power supply. The efficiency of the AC-DC converter is 90.4% at full load and the power factor is 0.995
Keywords :
AC-DC power convertors; optical fibre subscriber loops; power factor correction; telecommunication power supplies; -48 V; 100 V; 90.4 percent; AC-DC converter; NTT; fiber-optic subscriber loop transmission systems; flyback converter; high-efficiency; high-power-factor power supply system; power factor correction; power supply system; AC-DC power converters; Batteries; Central office; Circuits; Optical fiber subscriber loops; Power supplies; Reactive power; Regulators; Subscriber loops; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 1995. INTELEC '95., 17th International
Conference_Location :
The Hague
Print_ISBN :
0-7803-2750-0
DOI :
10.1109/INTLEC.1995.499010
