| 摘要 |
A lamp driving circuit is provided to minimize a circuit and to shorten a manufacturing process by using a transformer to implement a current balance of a driving voltage. A lamp driving circuit includes a rectifying unit(110), a PFC(Power Factor Correction) unit(120), a switching unit(130), and a transformer unit(140). The rectifying unit rectifies an input voltage. The PFC unit corrects a power factor of a voltage rectified by the rectifying unit, and converts the rectified voltage into DC voltage. The switching unit converts the DC voltage of the PFC unit into a square wave by switching the DC voltage of the PFC unit. The transformer unit has a transformer having a first input terminal and a second output terminal which are opposite to each other. The transformer receives the square wave voltage outputted from the switching unit, and outputs a plurality of driving voltages for driving the lamps. |
