| 摘要 |
PURPOSE: A power supply apparatus for plasma display panel is provided to secure some power factor by eliminating a high-capacity coil and condenser through remove of passive power factor correction function. CONSTITUTION: A rectifier(110) outputs an input of AC power supply through full-wave rectification. A power switching unit(120) includes a transformer(121) and rectification smoothing unit(122) providing DC power supply to a plasma display panel. A control unit(130) controls a switching operation through the open and close of a switching element(140) connected to a first side of power switching unit. The control unit corrects power factor by controlling output phase of a rectification unit in switching operation. The control unit maximizes power efficiency by switching reactive power to active power. |
