Bidirektional, galvanisk adskilt overføringskanal

摘要

Arrangement and method for electrically isolated transmission of direct-current and alternating-current signals. The signals can be transmitted in both directions via the same and only DC-isolated channel. The arrangement comprises a first transmit-and-receive system (1), a direct-current transmitter (4) in short-circuit mode, an operational amplifier arrangement (5), and a second transmit-and-receive system (2) with a message signal transmitter (9).