| 摘要 |
A device for driving a light source (L<SUB>11</SUB>) including a first lamp (a<SUB>1</SUB>) and a second lamp (a<SUB>2</SUB>) includes two power supply circuits, two transformers ( 12, 12 '), and two current balancing components ( 13, 13 '). Each power supply circuit includes a direct current (DC) power source ( 10 or 10 ') and a DC to alternating current (AC) converter ( 11 or 11 '). The DC/AC converters convert DC signals received from the corresponding DC power sources to AC signals. The transformers correspondingly convert the AC signals to other AC signals. The current balancing components are respectively connected between the transformers and the lamps. The feedback circuits correspondingly feed back current flowing through the lamps to the DC/AC converters.
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