| 摘要 |
PURPOSE:To attenuate noise between lines, and between line and earth, by a method wherein a coil of bifilar winding is installed to one leg of a core, and independent coils are installed to other two legs and connected in series. CONSTITUTION:Two lead wires of such as film-insulated copper wire are wound in bifilar to one leg of a core 13 thereby coils 14, 15 are formed. Independent coils 16, 17 are formed on other two opposed legs of the core 13. The coil 16 and 17 are connected in series respectively to the coils 14 and 15 in bifilar winding. The coils 14-17 are connected so as to cancel the magnetic flux each other. In this constitution, leakage flux increases thereby noise between lines may be attenuated. Inductance of the coils 14, 15 in bifilar winding acts on noise between the line and the earth, thus both noises may be attenuated significantly. |
