Telecommunication line protection current surge protection having identical circuit each wire series placed with limiting resistance parallel frequency selection capacitors.

摘要

The current limiter has a module (1) connected to a telephone wire network and apparatus. The module has two identical circuits one for each wire (2). Each circuit has a resistance (R3) limiting the power in series on the wire in parallel with capacitors (C3,C4,C5). The capacitors select the frequency of signal on the line.