| 摘要 |
<p>PURPOSE:To prevent an offset magnetism from being generated by means of a simple constitution and to efficiently reduce a loss of a transformer in a region of a high-frequency and large electricpower load by a method wherein the transformer is constituted of a magnetic core containing no gap in a magnetic path and a winding which has been wound independently on another magnetic core is connected in parallel with a primary winding of the transformer. CONSTITUTION:A transformer T is constituted of a magnetic core I1 in which no gap is formed in a magnetic path; a winding which has been wound independently on another magnetic core 12 separately from the magnetic core I1 is connected in parallel with a primary winding N1 of the transformer T; the transformer T is excited. Through this constitution, a means to prevent an offset magnetism from being generated in the transformer T is installed. For example, one end of a battery with a voltage Vi is connected to the center of a primary winding N1 of said offset-magnetism preventing transformer T1 the other end of the battery is connected to both ends of the primary winding N1 via parallel connections Q1 and D1 as well as Q2 and D2 of FET switches and diodes; diodes D3, D4 connected to both ends of a secondary winding N2 are connected electrically to a load resistance RL via a smoothing circuit composed of a reactor L and a capacity C; thereby, a push-pull converter is constituted.</p> |
