| 摘要 |
PROBLEM TO BE SOLVED: To obtain a compact high frequency switching power supply.SOLUTION: An AC current applied, as an input IN, between L phase and N phase is subjected to full-wave rectification and pulsation by means of a bridge rectifier circuit 10 consisting of four rectifier elements, before being applied to an inductor. An inductor 11 is connected with one terminal of an output capacitor 30 via a current sensor 12, and a diode 14. The other terminal of the output capacitor 30 is connected with the ground. A first switch element 21 and a second switch element 22 are subjected to operation control by a control circuit 18 via a driver 20, so that the timing of switch-on does not overlap. |
