| 摘要 |
PURPOSE: A light-emitting circuit and a driving method thereof are provided to improve a power factor by using an AC direct driving type LED driver. CONSTITUTION: A plurality of groups(G1,G2) in at least one pn junction light-emitting device. The plurality of groups are serially connected. A bridge diode is prepared in a rectification circuit(120). A rectification device(171) is prepared in a circulation wiring(172). The rectification device is rectified in the forward direction. |
