juillet 2026
Guide sur l'isolation électrique : isolation galvanique, isolateur numérique vs optocoupleur, caractéristiques techniques et applications
When should a circuit use isolation, and which isolation method is the right choice? Isolation is needed when increased voltage, noise, fault current, or ground-reduced problems can affect a reduced-voltage control circuit. This article explains how galvanic isolation works, compares digital isolators, optocouplers, transformers, relays, and isolated DC-DC converters, and shows how to choose the