| 摘要 |
<p>PURPOSE:To prevent the noise of a ballast and the damage of a bobbin flange by providing a thin projection which absorbs the dispersion of an H dimension, i.e., the thickness of a core on the bobbin flange and always maintaining appropriately the contact of a cover and the bobbin flange. CONSTITUTION:A thin projection 42 is provided on the part facing against a cover 2 of a bobbin flange 41. The height (h) of the thin projection 42 is set slightly higher than the dispersed dimension of the thickness H of a core. By enclosing a coil 3 using such a coil bobbin 4 and the core 5 with a base 1 and the cover 2 and clamping, the dispersion of the thickness of the core is absorbed by the degree of transformation of the thin projection 42 and the cover 2 and the bobbin flange 41 are always kept contact appropriately by the thin projection 42.</p> |
