.~ With respect to a reference or master device or quantity
DEFINITION
Classification: 322/36
(under subclass 17) Subject matter wherein the automatic control arrangement includes means for setting up a reference standard with means for comparing the condition to be controlled with the reference standard. The control system is usually responsive to the difference between the reference standard and the condition.
(1) Note. The particular condition set up by the standard is not material in this subclass. If the particular condition (e.g., voltage, frequency, etc.) is significant, the preceding subclasses under subclass 17 relating to the particular condition should be searched.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37, for systems under subclass 17 having the automatic control means controlled in accordance with electrical conditions in a circuit other than the circuit in which the generator is connected.
SEE OR SEARCH CLASS
318, Electricity: Motive Power Systems,
449+, for electric motor control having automatic control with respect to a standard, master or reference device.
