| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress the high-frequency noises of a charged circuit without providing a noise filter to the input power supply line (AC line) of a charging circuit. SOLUTION: This power supply unit is equipped with a first coil and a second coil which are each composed of a U-shaped magnetic core, and windings each wound on the two legs of the core, the two legs of the U-shaped core of the first coil and the two legs of the U-shaped core of the second coil are arranged so as to confront each other through the intermediary of their cases, and an electrostatic shield plate is provided on each winding surface of the first coil that confronts the winding surfaces of the second coil.</p> |
