| 摘要 |
<p>PURPOSE:To provide the polarities of coils in the same direction by a continuous winding and to obtain a choke transformer having excellent productivity and quality by inverting its winding direction with the end of winding as a starting point. CONSTITUTION:Collars 2, 3 are provided at the upper and lower ends of a spool 1 in which a core 12 is passed. A pair of guide ribs 4 for guiding the core 12 and a directional determining rib 5 are provided at the collar 2. A large part 6 is provided at the collar 3, and a plurality of guide grooves 7 of leads 11 of a coil 10B are provided. A pin terminal 8 is planted on the lower surface of the part 6 to form a bobbin 9. In the spool 1, the leads 11 are wound at the terminal 8 through the grooves 7, and a first layer coil 10B is wound. The leads of the end of a winding are wound at the other pin through the grooves 7, a second layer is reversely wound, and a coil 13 is then similarly formed. An EI-shaped core is inserted into the coil to form an air gap 14. According to the structure, winding and wiring can be automated, and a choke transformer having high performance and high reliability can be inexpensively produced by a magnetic path by three layer laminated coil and a suitable air gap.</p> |
