| 摘要 |
An inverter circuit (1) that drives a lamp (LAMP), includes a buck filter network (L1 and C1), an ignition network including at least an ignition capacitive device (C2), a bridge circuit including at least one pair of switching devices (Q1 and Q4, Q2 and Q3), and a controller (CTLR) that controls an ON time and an OFF time of each switching devices (Q1-Q4) to effect a polarity transition of at least one of a lamp voltage and a lamp current. The controller (CTLR) controls a length of a dead time such that the dead time ends just before the polarity transition. |
