If you don't have this three-way isolation, then an additional ground loop can develop between the isolator's power supply and the process input and/or output signal. Isolators, like most other ...

This simple circuit provides better than 1% accuracy in optically coupling a DC voltage signal ... loop. To further enhance stability, both optical isolators are located inside the same IC. Both the ...

In addition to the actual signal isolator components, multiple floating power supplies are typically required. The current-loop transmitter in the figure employs an unusual trick to inexpensively ...

External to the transmitter are spurious paths in the outside loop wiring and its power supply. Internal to the transmitter, shunt paths and ground loops are usually created at the point where you ...