Transformer formed in conjunction with printed circuit board
US6188305A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1995 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Dec 8, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/1476
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transformer comprises a printed circuit board having elongated conductors printed thereon, a ferrite core having a bottom mounted onto the printed circuit board and a flex circuit. The flex circuit comprises a dielectric sheet and elongated conductors printed on both faces of the sheet. The flex circuit is contoured around a top and sides of the core. The conductors of the flex circuit are surface bonded to respective conductors of the printed circuit board to form a series of primary windings and a series of secondary windings around the core. Provision of the upper portions of the windings by means of the flex circuit is economical because it does not require handling of discrete conductor portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.