Autotransformer using printed wireboard
US7859381B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2008 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Jan 2, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/2804
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An autotransformer for use in low frequency, high power applications that uses a stack of printed wire boards constructed of a top, inner, and bottom layer including electrical trace windings circumventing the transformer core and formed in the inner layer for direct thermal contact with a heat sink interface providing a uniform and consistent heat path down to the heat sink plate. The autotransformer further includes a board to board connection employing solder cups to electrically connect between predetermined printed wire board traces. The printed wire board autotransformer also may use a non-planar interface for thermal interface with a non-planar heat sink plate surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.