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G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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
G05F1/10—Regulating voltage or current
G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is AC
G05F1/24—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using bucking or boosting transformers as final control devices
Verfahren zum durchführen einer umschaltung von mindestens einem schaltmittel eines betriebsmittels und antriebssystem für mindestens ein schaltmittel eines betriebsmittels
Verfahren zur Regelung der Spannung oder des Stromes an elektrischen Apparaten, insbesondere Transformatoren, mit stufenweiser Regelung ueber Anzapfungen und Stufenschalter unter Verwendung einer nichtregelbaren Wicklung und einer mittels Anzapfungen bis Nul herab regelbaren Wicklung