| 摘要 |
<p>PURPOSE:To improve withstand voltage characteristics by forming a winding groove portion for constituting a secondary winding on a collar located at the start side of winding disposed in high-tension bobbin section. CONSTITUTION:A high-tension bobbin unit 11 constitutes a high-tension bobbin 3 and high-tension bobbin section 12a, 12b and 12c are coupled by means of coupling arms 13a and 13b. These sections 12a, 12b and 12c are formed in the same dimension and shape. Then, each of winding grooves 15 for constituting a coil section is formed between collars 14a and 14b disposed at both ends, and a through- hole 16 passing through a low-tension bobbin is provided at the center thereof. Withstand voltage characteristics can be improved by providing a groove portion for the secondary winding in the collar 14a located at the start-side of winding and preventing contact of the side of the coil section and the start portion of winding.</p> |
