| 摘要 |
<p>A three or four terminal noise filter and a method of making the same are disclosed. A pair of conductive bands (6, 9) are wound in a spiral manner with a thin insulating separator (11) therebetween. One (6) of the conductive bands (6, 9) is made of either electrically or electromagnetically conductive foil to form an inductance between terminals (7, 8) coupled to both ends of such foil (6) and also providing capacitance distributed over the entire length between the foil, and the other conductive band (9) is made of electromagnetically conductive foil such as an iron foil. The noise filter can be made essentially in the same manner and using essentially the same facilities as for conventional tubular capacitors.</p> |
