| 摘要 |
<p>A vehicle-mounted noise filter which suppresses electric field coupling between input and output terminals in the FM radio band, thereby allowing noise attenuation performance, which is originally provided to a noise filter circuit, to be exerted even in the FM radio band. The vehicle-mounted noise filter is composed of a coil (1) obtained by coiling a conductor about a magnetic core, the input and output terminals (2,3) connected respectively and electrically to both of the terminals of the coil, and a shielding means (4). The shielding means (4) consists of a conductive member which is grounded and disposed so as to shield the electric field between the input and output terminals (2, 3). The noise filter can also be configured using a capacitor wherein one terminal is connected electrically to the coil (1) and the other terminal is grounded.</p> |
