| 摘要 |
PURPOSE:To realize a delay line with small size and small coupling between coils, by meshing recessed parts of a bobbin having the recessed parts between windings with each other. CONSTITUTION:Two coils 4 are closed together toward the axis center, and by adjusting the interval between the axis center alightly, the coupling of the coils can be adjusted. The axial center distance of a bobbin 3 for the coils 4 is constituted slightly shifted for the adjacent coils 4. Thus, the bobbin 3 is constituted as sectional combination. In the bobbin 3 having the axis center A, a recessed part is formed so that coils L2 and L4 having the axis center B can just be fitted among coils L1, L3 and L5 wound around the axis center A. As a result, the coupling among the coils can be adjusted suitably. |
