Patent ID: 6483412
Filing Date: 2002-11-19
Classification: H01F

Abstract:
An electrical device for mounting on a circuit board, said device comprising a magnetic core and at least one coil wound around the core, which device comprises(1) a first core half comprising (a) a first outer skirt comprising first and second side walls connected by a top wall, (b) a first back-plane connected to the first outer skirt to form a semi-enclosed housing, said first outer skirt and said first back-plane comprising a first magnetic material, and (c) a first center core component which (i) has a primary axis and a secondary axis, the secondary axis having a smaller dimension than the primary axis, (ii) has a cross-section with a ratio of length of primary axis to length of secondary axis of 1.1:1 to 3.5:1 (iii) extends perpendicularly from the first back-plane so that the primary axis is perpendicular to the circuit board when the device is mounted, and (iv) comprises a second magnetic material, (2) a second core half is matable with the first core half, and which comprises (a) a second outer skirt comprising first and second side walls connected by a top wall, (b) a second back-plane connected to the second outer skirt to form a semi-enclosed housing, said second outer skirt and said second back-plane comprising the first magnetic material, and (c) a second center core component which (i) has a primary axis and a secondary axis, the secondary axis having a smaller dimension than the primary axis, (ii) has a cross-section with a ratio of length of primary axis to length of secondary axis of 1.1:1 to 3.5:1, (iii) extends perpendicularly from the second back-plane so that the primary axis is perpendicular to the circuit board when the device is mounted, and (iv) comprises the second magnetic material, (3) a bobbin which (a) comprises an exterior surface and a hollow center section having a cross-section of similar shape to the cross-section of the first and second core components and sized for receiving the first and second core components, and (b) is attached to first and second flanges, each of which flanges comprises wire mounting posts on its bottom edge; and (4) at least one coil which is wound around the exterior surface of the bobbin, the first and second core halves being mated so that the first and second core components are inserted into the center section of the bobbin to form the magnetic coil and the coil is attached to at least one pair of wire mounting posts.