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    • 1. 发明申请
    • POWER FACTOR CORRECTING CIRCUIT
    • 功率因数校正电路
    • WO1996009741A1
    • 1996-03-28
    • PCT/SG1995000007
    • 1995-04-21
    • POWER IMAGE PTE LTD.LIM, Kee Liew, VictorTAO, Kuang, Zheng
    • POWER IMAGE PTE LTD.
    • H05B41/29
    • H02M1/425H05B41/28Y02B70/126
    • A fluorescent lamp power supply circuit is disclosed which includes a square wave switching power supply (110), a low current smoothing capacitor (160), a fluorescent tube (100) connected between the switching power supply (110) and the capacitors, means for linking the switching power supply (110) to a mains supply (120) including a rectifier (130) and first and second mains inputs connected to the rectifier (130), a first diode (154) connected between the capacitor (160) and the connecting means (150 and 152), a second diode (156) connected between the capacitor (160) and the load, whereby a single current path to the capacitor (160) is defined through the second diode (154) and a single current discharge path from the capacitor (160) is defined through the first diode (154), first and second capacitors (150 and 152) connected for duty cycle stabilization across the connecting means, the load being connected therebetween; and an inductor (134) connected between the rectifier (130) and one of the mains inputs (120), for smoothing switching noise.
    • 公开了一种荧光灯电源电路,其包括方波开关电源(110),低电流平滑电容器(160),连接在开关电源(110)和电容器之间的荧光管(100),用于 将所述开关电源(110)连接到包括整流器(130)的主电源(120)和连接到所述整流器(130)的第一和第二电源输入端,连接在所述电容器(160)和所述电容器 连接装置(150和152),连接在电容器(160)和负载之间的第二二极管(156),由此通过第二二极管(154)限定到电容器(160)的单个电流路径,并且单个电流放电 通过第一二极管(154)限定来自电容器(160)的路径,第一和第二电容器(150和152)连接在连接装置上用于占空比稳定,负载连接在它们之间; 以及连接在整流器(130)和电源输入端(120)之一的电感器(134),用于平滑开关噪声。