| 摘要 |
<p>PURPOSE:To improve voltage regulation by providing secondary windings which are magnetically coupled with a plurality of split primary windings, providing resonance capacitors to be added, and mutually shifting resonance frequencies with each primary winding and the resonance capacitor. CONSTITUTION:A flyback transformer 10 has split windings PC1 and PC2. Film winding bodies 12 as resonance capacitors Cp1 and Cp2 are added to the primary windings. Secondary windings SC1-SC4 are sequentially laminated and arranged thereon. For example, when the attaching positions of terminals 24a1 and 24b1 are changed in the film winding body 12a, the magnitude of the inductance of the primary winding PC1 is adjusted. An insulating film 16 is provided between conductor foils 18 and 20, and a capacitance CP1 is formed. Said capacitor can be appropriately adjusted by the facing areas of the conductor foils 18 and 20 and the dielectric constant of the insulating sheet 16. The resonance frequencies of the primary windings PC1 and PC2 can be shifted mutually by the combinations of said values. In this way, a peak current Ip flowing through the secondary winding becomes small, and voltage regulation is improved.</p> |
