| 摘要 |
<p>A demagnetising coil (1) e.g. for a colour television receiver tube comprises insulation covering the conductors (3) which is formed by at least two sleeves (6, 5) one inside the other, each sleeve being formed by a channel-section extrusion, the ends (7b, 8b, 10b, 11b) of which are folded over each other, and sealed together by heat treatment or by an adhesive. <IMAGE></p> |
