Transformer correction circuit and technique for reducing cross-talk current
US8791687B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 2012 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | Jan 23, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2027/408
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus and technique that reduces induced cross-talk current between transformer windings. The apparatus includes a transformer having a first secondary winding that provides a first voltage relative to earth ground, a second secondary winding that provides a second voltage relative to floating ground, and a shield disposed between the first and second secondary windings. A correction circuit connected to the first secondary winding is configured to generate a correction voltage. The correction voltage drives a shield to induce a correction current into the second secondary winding to reduce cross-talk current induced between the first and second secondary windings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.