Filter assembly and method
First Claim
1. An electronic filter assembly comprising:
- a magnetically conductive outer annular body extending around a center axis;
a magnetically conductive inner annular body extending around the center axis between the outer annular body and the center axis;
a first set of magnetically conductive prongs radially extending from the inner annular body toward the outer annular body, wherein the prongs in the first set are directly coupled with the inner annular body but are separated from the outer annular body by one or more first separation gaps;
a second set of magnetically conductive prongs radially extending from the outer annular body toward the inner annular body, wherein the prongs in the second set are directly coupled with the outer annular body but are separated from the inner annular body by one or more second separation gaps; and
conductive windings extending around the prongs in the first set.
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Accused Products
Abstract
An electronic filter assembly includes a magnetically conductive annular body extending around a center axis, a set of magnetically conductive prongs radially extending from the center axis toward the annular body, and conductive windings extending around the prongs. The conductive windings can be disposed around the prongs instead of the annular body to assist in conduction of common mode magnetic flux, to reduce impedance of the filter assembly, and/or to more evenly distribute temperature in the filter assembly. A method for forming an electronic filter assembly includes forming an electronic filter assembly having a magnetically conductive annular body extending around a center axis and a set of magnetically conductive prongs radially extending from the center axis toward the annular body. The annular body and the prongs can be formed by coupling plural layers of magnetically conductive bodies together.
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Citations
24 Claims
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1. An electronic filter assembly comprising:
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a magnetically conductive outer annular body extending around a center axis; a magnetically conductive inner annular body extending around the center axis between the outer annular body and the center axis; a first set of magnetically conductive prongs radially extending from the inner annular body toward the outer annular body, wherein the prongs in the first set are directly coupled with the inner annular body but are separated from the outer annular body by one or more first separation gaps; a second set of magnetically conductive prongs radially extending from the outer annular body toward the inner annular body, wherein the prongs in the second set are directly coupled with the outer annular body but are separated from the inner annular body by one or more second separation gaps; and conductive windings extending around the prongs in the first set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 19, 20)
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10. An electronic filter assembly comprising:
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a magnetically conductive outer annular body extending around a center axis; a magnetically conductive inner annular body extending around the center axis between the center axis and the outer annular body; a first set of magnetically conductive prongs radially extending from the center axis toward the outer annular body, the prongs in the first set being separated from the outer annular body by first separation gaps but directly coupled with the inner annular body; and a second set of magnetically conductive prongs radially extending from the center axis toward the outer annular body, the prongs in the second set being directly coupled with the outer annular body but separated from the inner annular body by second separation gaps, and wherein the first set of the magnetically conductive prongs are positioned to magnetically conduct a magnetic flux during a differential mode of operation of the filter assembly and the second set of the magnetically conductive prongs are positioned to magnetically conduct the magnetic flux during a common mode of operation of the filter assembly. - View Dependent Claims (11, 12, 13, 21, 22, 23, 24)
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14. An electronic filter assembly comprising:
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a magnetically conductive outer annular body extending around a center axis; a magnetically conductive inner annular body extending around the center axis between the outer annular body and the center axis; a first set of magnetically conductive prongs radially extending from the center axis toward the outer annular body, the first set of prongs directly coupled with the inner annular body but not directly coupled with the outer annular body; and a second set of magnetically conductive prongs radially extending from the center axis toward the outer annular body, the second set of prongs directly coupled with the outer annular body but not directly coupled with the inner annular body, wherein the first set of the magnetically conductive prongs is positioned to magnetically conduct a magnetic flux during a differential mode of operation of the filter assembly and the second set of the magnetically conductive prongs is positioned to magnetically conduct the magnetic flux during a common mode of operation of the filter assembly; and wherein the magnetically conductive prongs in the first set are symmetrically separated from each other around the center axis and the magnetically conductive prongs in the second set are symmetrically separated from each other around the center axis. - View Dependent Claims (15, 16)
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Specification