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

Claim 14:
15. A method of operating a communication barrier arrangement that include an isolation barrier with a first and a second transformer and a protection circuit for the isolation barrier, the protection circuit including a resistor connected in parallel with a first capacitor, the protection circuit having a first side at one end of the parallel components, which first side faces the isolation barrier, and having a second side at an opposite end of the parallel components, the method comprising:
receiving first signals from a first process control system device,
transferring the first signals to a second process control system device via the first transformer and the protection circuit,
detecting a zero-voltage level at the first side of the protection circuit, and
pulling the voltage at the second side of protection circuit to zero in order to discharge the first capacitor.