| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a common mode noise filter enabling attenuation to be increased and attenuation band to be broadened against common mode noise. <P>SOLUTION: A common mode noise filter of the invention is realized by connecting common mode choke coils 2a, 2b, of which impedances are low for differential mode signal and high for common mode noise, to signal lines 1a, 1b in series, as well as by connecting differential mode choke coils 7a, 7b, of which impedances are high for differential mode signal and low for low common mode noise, with signal lines 1a and 1b in parallel. <P>COPYRIGHT: (C)2012,JPO&INPIT |
