Patent ID: 11943009
Assignee: nan
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A communication barrier arrangement for connection between a first and a second process control system device, the communication barrier arrangement comprising:
a first driving stage having a first interface for receiving first signals from the first process control system device that are destined for the second process control system device;
an isolation barrier comprising a first transformer having a primary winding connected to the first driving stage and a secondary winding, where the first transformer is provided for transfer of the first signals;
a second driving stage connected to the secondary winding of the first transformer and having a first connection terminal for output of the first signals towards the second process control system device;
a first signal conditioner having a second connection terminal for receiving the first signals from the second driving stage and a second interface for delivering the first signals to the second process control system device; and
a protection circuit including a resistor in parallel with a first capacitor, said protection circuit being connected between the first and second connection terminals.