| 摘要 |
<p>PURPOSE:To relax the restriction in the arrangement of parts and to make thin the device and improve the heat radiation property by using a plurality of transformers small in all of length, width, and height. CONSTITUTION:Noise components of AC voltage are removed by a filter 11, and then full-wave rectification is performed with a rectifier 12, and it is accumulated as charge in a capacitor 13 for smoothing. Next, by the driving of a switching element 14, it becomes a current and flows to the primary winding of a transformer 15. Next, electromotive force is induced in the secondary winding of the transformer 15, and it is rectified with a rectifying diode 16, and is smoothed with a capacitor 17, and is supplied to a load. And this transformer 15 is composed of three pieces of transformers T1, T2, and T3, and the number of windings and the current to flow are made approximately one third, respectively. Hereby, the compactification of a device is realized and the transformer breakdown by temperature rise can be prevented.</p> |
