G05F - CPC Classification

• G05F1/00 » Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems 104
• G05F3/02 » Regulating voltage or current 407
• G05F5/00 » Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output 350
• G05F7/00 » Regulating magnetic variables 17