Insulation and integrated heat sink for high frequency, low output voltage toroidal inductors and transformers
US7142085B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 2003 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Dec 26, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Toroidal transformer and inductor configurations are described that allow for greater heat transfer away from internal device components. The inventive transformer allows for higher thermal and electrical efficiency, as well as for more efficient use of expensive components, such as copper wire. In one embodiment, a toroidal transformer provides access for cooling air by forming the primary winding from a single layer of thick wire and a secondary winding of few turns such that most of the primary winding is exposed to air flow. In another embodiment, a heat sink is positioned between the core and primary windings to conduct heat away from the transformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.