Digital data transmission
US5210519A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | May 20, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2203/5483
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for transmitting data over a power line (2) and having particular application for flight control networks. The method enables bi-directional transmission of data over either DC or AC power lines. Transformers (T.sub.3, T.sub.4) used for coupling data onto and from the power lines (2) comprise three windings (L.sub.1, L.sub.2 and L.sub.3) and a ferrite core. Saturation of the core is avoided by arranging for the load current to flow in opposite senses through two (L.sub.1 and L.sub.2) of the windings. By choosing the number of turns of the two windings to be equal, complete cancellation of DC flux inside the core is possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.