Circuit arrangement for a driver stage with galvanically decoupled differential output

摘要

The invention relates to a circuit arrangement for a driver stage equipped with a galvanically decoupled differential output and intended for the transmission of analog DC voltage signals with superimposed AC voltage signals. The galvanically decoupled AC voltage signals are combined with the DC voltage signal in an adding stage and modulated onto a carrier frequency in an amplitude modulator. The amplitude-modulated signal is then supplied through a broadband high-frequency transmitter referred to zero potential, to a full-wave rectifier, from whose outputs the difference signal which is symmetrical with respect to the reference potential can be picked off. <IMAGE>