FIELD: electricity.
SUBSTANCE: device comprises bidirectional units of digital signals and supply voltage isolation, including transformers, the first windings of which are connected serially into DC supply line, and the second ones are connected to devices for reception and transfer of digital signals arranged with the possibility to mutually block their operation. Device for reception of digital signals comprises, in particular serially connected amplifier, rectifier or demodulator, filter and threshold device, and transfer device includes controlled pulse generator. Any of composite parts of board system may include its own multiplex communication line. Separate composite parts of board system by means of combined supply and information exchange line are connected along physical network topology of "star" or "tree" type.
EFFECT: reduced level of electromagnet noise developed by device, reduced sensitivity to action of pulse noise, reduced level of supply voltage pulsations and increased stability of operation of electronic information control devices of board system for control, protection and monitoring of the machine.
11 cl, 1 dwg
