| 摘要 |
PROBLEM TO BE SOLVED: To significantly reduce the cost of a power supply for driving a fluorescent lamp, to greatly improve its efficiency, and to significantly improve the stability of its system, at the same time. SOLUTION: This power supply for driving the fluorescent lamp is composed of a multi-switch conversion circuit, a power transformer T1, a resonance inductor L1, a resonance capacitor C4, a boosting transformer T2, and rectifying circuits D1, D2. The primary side coil of the power transformer T1 is connected to the AC output of the multi-switch conversion circuit, the resonance inductor L1 is connected to the secondary side coil of the power transformer T1 through the primary side coil of the boosting transformer T2, after passing through the resonance capacitor C4. The secondary side coil of the power transformer T1 is also connected to the rectifying circuits. The secondary side coil of the boosting transformer T2 is connected to a load output. Two of the power supply for driving the fluorescent lamp and the power supply of its control system are organized into a single body. As a result of this, output from a power factor correcting circuit to a lamp tube can be performed with only one-time energy conversion. COPYRIGHT: (C)2009,JPO&INPIT |
