| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a highly efficient load drive.SOLUTION: A load drive 1 comprises a rectifier circuit 2 generating a first voltage V1 by rectifying an AC voltage Vin from an AC power supply Vac; a first converter 3 for converting the first voltage V1 outputted from the rectifier circuit 2 into a second voltage V2; a second converter 4 performing constant current driving of the load 100 on the basis of the second voltage V2 converted by the first converter 3; and a voltage adjustment circuit 5 generating a feedback voltage Vf on the basis of the output voltage Vo when the second converter 4 performs constant current driving of the load 100. The first converter 3 converts the first voltage V1 into the second voltage V2 on the basis of the feedback voltage Vf obtained from the voltage adjustment circuit 5.</p> |
