DIFF Subgroup
G05F 1/66 Regulating electric power
Introduced: September 1968
Full Title
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 > Regulating electric power
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1985.
Child Classifications
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- G05F 1/67 to the maximum power available from a generator, e.g. from solar cell since 1985 IPC+CPC Available in IPC and CPC