| 摘要 |
<p>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 (T3, T4) used for coupling data onto and from the power lines (2) comprise three windings (L1, L2 and L3) and a ferrite core. Saturation of the core is avoided by arranging for the load current to flow in opposite senses through two (L1 and L2) of the windings. By choosing the number of turns of said two windings to be equal, complete cancellation of DC flux inside the core is possible. <IMAGE></p> |
