In August of 1980, George Pontis (of HP) described a “floating” and “cross-coupled” output stage. (A few months later, Tom Hay of MCI described a similar circuit in an AES preprint.) Pontis' design took feedback from both output ports, effectively allowing the circuit's outputs to “float” much like a transformer. This also avoided the large ground currents into the short, so long as the output remained unclipped. The main drawback to this approach was the need for precision resistors to maintain stability.
发表于 2023-10-28 17:25
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