188690 ⎘
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 voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices
Sub-classes:Flexible voltage transformation system
#2Methods and systems for using a tapped transformer to generate voltage sags
#3System and method for regulation of voltage on an electrical network
#4Voltage monitoring control device and voltage monitoring control method
#5Apparatus and methods for power regulation of electrical loads to provide reduction in power consumption with reversing contactors
#6Highly survivable and rugged computer assembly