| 摘要 |
<p>PURPOSE:To reduce cost and achieve compactness by providing a winding at the drum part having different thickness between flanges of a multiple-type drum core. CONSTITUTION:A coil 11 is wound around a series of drum cores 30 comprising drum parts having different diameters between flanges, in series, two or more drum parts 31 having different diameters are provided as a magnetic body, and a flange 32 is provided at the opposite ends and the intermediate part. As a result, a non-linear DC superposition characteristic can be obtained and a large inductance can be obtained for a light-load current, thus reducing the number of circuit parts and achieving compactness and reduced cost.</p> |
