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US-2015372655-A1 · Dec 24, 2015 · US
Vehicle-mounted noise filter
US8994475B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8994475-B2 |
| Application number | US-99441909-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 20, 2009 |
| Priority date | May 27, 2008 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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- Title
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Abstract
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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 should originally be provided to a noise filter circuit, to be exhibited even in the FM radio band. The vehicle-mounted noise filter comprises a coil ( 1 ) obtained by winding a conductive wire around a magnetic core, input and output terminals ( 2, 3 ) electrically connected to both terminals of the coil, and a shielding member ( 4 ). The shielding member ( 4 ) is made 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 having one terminal electrically connected to the coil ( 1 ) and the other terminal grounded.
First claim
Opening claim text (preview).
What is claimed is: 1. A vehicle-mounted noise filter comprising: a coil having two terminals and obtained by winding a conductive wire around a magnetic core; input and output terminals of the vehicle-mounted noise filter electrically connected to the two terminals of the coil, respectively; a pair of capacitors, each capacitor having one terminal electrically connected to a respective terminal of the coil and the other terminal grounded; and a shielding member made of a co…
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Classifications
Electricity · mapped topic
- H03H1/0007Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8994475B2 cover?
- 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 should originally be provided to a noise filter circuit, to be exhibited even in the FM radio band. The vehicle-mounted noise filter comprises a coil ( 1 ) obtained by winding a conductive wire around a magnetic co…
- Who is the assignee on this patent?
- Nishioka Yasuhiko, Harada Ind Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H03H1/0007. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).