| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a single-structure transformer capable of balancing current flowing to three loads while reducing the number of parts, the mounting area, and the cost. <P>SOLUTION: The transformer uses a bobbin 20 having a plurality of winding frames on the same winding axis, and using coils wound on the respective winding frames of the bobbin 20 in combination with a magnetic core. The bobbin 20 has two winding regions P and Q divided by a groove for arranging the magnetic core at one place of intermediate portions. Each of the winding regions has two winding frames. A current dividing coil of the first stage is wound on the both winding frames of one of the winding regions by a turn ratio of 2:1 substantially, and a current dividing coil of the second stage is wound on the both winding frames of the other winding region by a turn ratio of 1:1 substantially. The magnetic core 24 is arranged so that coils of the both winding regions form a closed magnetic path. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
