| 摘要 |
PURPOSE:To improve both electric characteristics and productivity, by providing an attenuating pole at both low and high frequency regions respectively and at the same time adding an attenuating pole to the intermediate frequency region. CONSTITUTION:An attenuating pole of a low frequency region is formed by the resonance of a capacitor C2 and the coupling inductance between coils L11 and L12. An attenuating pole is formed at a high frequency region with the resonance of an inductance L2 and a capacitor C4. Then an attenuating pole is formed at an intermediate frequency region with the resonance of a capacitor C1 and the sum inductance of the coils L11 and L12. In such a way, a sufficient amount is secured for the attenuating poles. This can improve the charactersitcs. As a result, the number of defective products can be reduced greatly to increase the productivity. |
