Electronic inductive device and method for manufacturing
First Claim
Patent Images
1. A ferromagnetic device comprising:
- (a) an assembly of at least outer conductive first and second elements and an inner insulated non-magnetic third element,(b) said conductive first elements forming conductive first traces on the inner third element,(c) said conductive second elements forming conductive second traces on the inner third element,(d) a discrete ferromagnetic element having an annular body with a hole positioned in a cavity in the inner third element with insulating filler material encapsulating the ferromagnetic element in the cavity and filling the hole,(e) conductive first vias extending through said assembly along the outer side of and through the filled hole of the ferromagnetic element and between and connected to the conductive first and second traces,(f) said conductive vias forming with its connected conductive first and second traces at least an electrical first winding constituted of at least a single winding turn surrounding the annular body of the ferromagnetic element,(g) terminal connections to at least the ends of the electrical first winding.
2 Assignments
0 Petitions
Accused Products
Abstract
Inductive electrical components fabricated by PWB techniques of ferromagnetic core or cores are embedded in an insulating board provided with conductive layers. Conductive through-holes are provided in the board on opposite sides of a core. The conductive layers are patterned to form with the conductive through-holes one or more sets of conductive turns forming a winding or windings encircling the core. The conductive layers can also be patterned to form contact pads on the board and conductive traces connecting the pads to the windings.
-
Citations
12 Claims
-
1. A ferromagnetic device comprising:
-
(a) an assembly of at least outer conductive first and second elements and an inner insulated non-magnetic third element, (b) said conductive first elements forming conductive first traces on the inner third element, (c) said conductive second elements forming conductive second traces on the inner third element, (d) a discrete ferromagnetic element having an annular body with a hole positioned in a cavity in the inner third element with insulating filler material encapsulating the ferromagnetic element in the cavity and filling the hole, (e) conductive first vias extending through said assembly along the outer side of and through the filled hole of the ferromagnetic element and between and connected to the conductive first and second traces, (f) said conductive vias forming with its connected conductive first and second traces at least an electrical first winding constituted of at least a single winding turn surrounding the annular body of the ferromagnetic element, (g) terminal connections to at least the ends of the electrical first winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An electronic component for use as an inductor, transformer or choke, comprising:
-
(a) an assembly of at least outer conductive first and second elements and an inner insulated non-magnetic third element, (b) said conductive first element forming conductive first traces on the inner third element, (c) said conductive second element forming conductive second traces on the inner third element, (d) at least one discrete ferromagnetic element embedded in the inner third element, (e) conductive first vias extending through said assembly on opposite sides of the ferromagnetic element and between and connected to the conductive first and second traces, (f) said conductive first vias forming with its connected conductive first and second traces at least an electrical first winding surrounding the ferromagnetic element, (g) terminal connections to at least the ends of the electrical first winding, (h) at least insulating fourth and fifth elements on, respectively, the conductive first and second elements, (i) at least conductive third and fourth traces formed on the insulating fourth and fifth elements, respectively, (j) conductive second vias extending on opposite sides of the ferromagnetic element and connected between the conductive third and fourth traces and forming therewith at least an electrical second winding surrounding the ferromagnetic element, (k) terminal connections to at least the ends of the electrical second winding. - View Dependent Claims (10, 11, 12)
-
Specification