Method and device for signal transmission over the screen of high and medium voltage cables

申请公布号：EP0844742(A2)

申请号：EP19970810816

申请日期：1997.10.31

申请公布日期：1998.05.27

申请人：

ABB RESEARCH LTD.

发明人：LEHMANN, JOSEF;RUDOLF, PAUL;SABBATTINI, BRUNO

分类号：H02J13/00;H04B3/56;(IPC1-7):H04B3/54

主分类号：H02J13/00

摘要：<p>The method involves modulating communication signals through transformers on at least one signal conductor (11; R', S', T'), which does not carry any current during normal operation, and which is electrically isolated against at least one adjacent current or adjacent phase conductor (12; R, S, T). These communication signals are simultaneously decoupled from a ground potential. The communication signals are separated from the ground potential in at least one intermediate station (2, 3) with respect to a high frequency (HF) component, and without coupling and/or decoupling. The intermediate station comprises at least one switch (S2, S3) in the current or phase conductor.</p>

Method and apparatus for converting photo slides into motion pictures in a mobile terminal

Wireless transmitter

Communication system and method that reduces interference

Parallel interference cancellation and minimum cost channel estimation

Optimising communication links

Method, arrangement and device for precompensation of crosstalk in a DSL MIMO system

Frequency division multiplexing system with selectable rate

Electronic device and method providing improved management of multiple times from multiple time zones

Nonvolatile memory device and method of operating the same

8T low leakage SRAM cell

Semiconductor memory device

3-level power converter

Gas-insulated switchgear

Reflection type display apparatus

Optical pattern generator using multiple reflective surfaces

Optical device of scanner

Color processing apparatus and control method thereof

Uninterruptible power supply

Standby saver

Single input and dual-output power supply with integral coupling feature