REDUCING INTERFERENCE IN TELECOMMUNICATION LINES

摘要

An amplifier that reduces interference from strong electric-fields in a telecommunication line has two inputs(2,11) in its preliminary amplifier(3). One input(2) is connected to a pilot cable(1) and the other input(11) is connected to the primary coil(7) of the coupling transformer(6) through an output amplifier(4). The output of the amplifier(4) returns to the input(11) and an auxillary amplifier(12) is connected to the secondary coil(9) of the couplng transformer.