Noise filter
AssigneeMurata Manufacturing Co., Ltd.
InventorYukio Sakamoto
Life of this patent
Estimating the term…
Abstract
A noise filter includes a capacitor having first and second electrodes, first and second terminal legs extending from the first electrode, and third and fourth terminal legs extending from the second electrode. The first and second terminal legs adapted for the path of electric signal, and the third and fourth terminal legs adapted for the path of ground level. The noise filter further includes first and second tubes mounted on the first and second terminal legs, respectively, and third and fourth tubes mounted on the third and fourth terminal legs, respectively. Each of the first, second, third and fourth tubes is made of a magnetic material, whereby high frequency noise signals can be filtered when signals pass through the noise filter.
Claims23
A noise filter, comprising:
- a capacitor having first and second electrodes;
- first and second terminal legs extending from said first electrode, said first and second terminal legs being electrically coupled to one another;
- third and fourth terminal legs extending from said second electrode, said third and fourth terminal legs being electrically coupled to one another;
- a tube made of magnetic material being mounted on one of said terminal legs whereby when an electric signal is applied to said first terminal leg and said third terminal leg is connected to ground, high frequency noise signals contained in said electric signal are filtered;
- and
- a feed through capacitor having first and second electrodes, said feed through capacitor being mounted on said second terminal leg, said first electrode of said feed through capacitor being electrically connected to said second terminal leg and said second electrode of said feed through capacitor being electrically connected to one of said third and fourth terminal legs.
A noise filter, comprising:
- a capacitor having first and second electrodes;
- first and second terminal legs extending from said first electrode, said first and second terminal legs being electrically coupled to one another;
- third and fourth terminal legs extending from said second electrode, said third and fourth terminal legs being electrically coupled to one another;
- first and second tube means mounted on said first and second terminal legs, respectively, each of said first and second tube means being made of a magnetic material, whereby when an electric signal is applied to said first terminal leg and said third terminal leg is grounded, high frequency noise signals contained in said electric signal are filtered;
- and
- a feed through capacitor having first and second electrodes, said feed through capacitor being mounted on said second terminal leg, said first electrode of said feed through capacitor being electrically connected to said second terminal leg and said second electrode of said feed through capacitor being electrically connected to one of said third and fourth terminal legs.
A noise filter comprising:
- a capacitor having first and second electrodes;
- first and second terminal legs extending from said first electrode, said first and second terminal legs being electrically coupled to one another;
- third and fourth terminal legs extending from said second electrode, said third and fourth terminal legs being electrically coupled to one another;
- first, second and third tube means mounted on said first, second and third terminal legs, respectively, each of said tube means being made of a magnetic material whereby when an electric signal is applied to said first terminal leg and said third terminal leg is grounded, high frequency noise signals contained in said electric signal are filtered;
- and
- a feed through capacitor having first and second electrodes, said feed through capacitor being mounted near said second terminal leg, said first electrode of said feed through capacitor being electrically connected to said second terminal leg and said second electrode of said feed through capacitor being electrically connected to one of said third and fourth terminal legs.
A noise filter according to claim 14, wherein said third terminal leg is grounded.
Dependencies are inferred from the claim text.