| 摘要 |
PROBLEM TO BE SOLVED: To provide a transformer resetting circuit and a power supply circuit which can releave breakdown voltage required for a switching device, when a transformer is reset and regenerate power at the resetting to a power supply output. SOLUTION: While drive power is supplied to a 1st winding 11a, a part of transformed power outputted from a 2nd winding 11b is accumulated. While drive power supplied to the 1st winding 11a is cut off, a part of the accumulated transformed power is regenerated to a transformer 11 through a 3rd winding 11c. A part of the transformed power is accumulated in an electrical energy accumulating means 32 and also supplied to the 3rd winding 11c by a switching means 42. The electrical energy accumulating means 32 is an inductance device, and a part of the rectified transformed power is accumulated in it. |
