| 摘要 |
PURPOSE:To facilitate an easy production of a demagnetizing coil and at the same time to eliminate the magnetization in case an iron wire is used for the coil, by forming a coil with a lead wire coated with an insulator and bundling the coil with the lead wire connected to the coil. CONSTITUTION:A coil 8 is formed with a lead wire 7a coated with an insultor 6, and at the same time the coil 8 is bundled with lead wire 7b connected to the coil 8. In such way, the coil 8 is bundled conveniently at the same point where the coil 8 is formed. When a demagnetizing coil is in working, a part of the magnetic flux caused by the bundling lead wire 7b passes through the lead wire 7a forming the coil 8. Thus the wire 7a can be demagnetized by itself. Accordingly the magnetization can be eliminaed to a demagnetizing coil using an iron wire. |
