| 摘要 |
A discharge lamp lighting control device ( 100 ) having a DC power converter, a power factor improving power converter ( 1 ), a polarity reversing circuit ( 2 ), a starter circuit ( 3 ), and a controller ( 4 ). The power factor improving power converter 1 includes a switching device S, a power factor improver, and a power converter. The power factor improver operates to smooth a rectified voltage by storing energy in a first inductive device L 1 and by discharging energy from a second inductive device L 2 , in which the first and second inductive devices are magnetically coupled together. The storing and discharging is performed by turning ON and OFF the switching device S. A predetermined DC voltage is converted by energy stored and discharged by a third inductive device L 3 in response to the turning ON and OFF of the switching device S.
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