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SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
Definition statement
This subclass/group covers:

Systems only;

Use of hydraulics, pneumatic, mechanical and electrical motors for varying electric characteristics of devices which restore the quantity regulated;

The combination of static converters and current or voltage regulators, if the invention resides in the combination.

References relevant to classification in this subclass
This subclass/group does not cover:
Regulating the timing or recurrence frequency of pulses in radar or radio navigation systems
Closed-loop systems for regulating non-electric variables by electric means
Controlling transformers, reactors or choke coils
Electric control of X-ray apparatus
Regulating characteristics of transmission lines
Regulating electric power distribution networks
Regulating frequency response, gain, maximum output, amplitude or bandwidth of amplifiers
Regulating power supply of digital computers
Regulating the charging of batteries
Regulating tuning of resonant circuits
Regulation of the output of electric generators
Regulation of the output of static converters, e.g. switching regulators
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 characteristics of arcs (arrangements for feeding electrodes B23K 9/12, H05B 7/109, H05B 31/18; automatic control of power for heating by discharge H05B 7/148)
References relevant to classification in this group
This subclass/group does not cover:
Arrangements for feeding electrodes
Automatic control of power for heating by discharge
Regulating voltage or current (G05F 1/02 takes precedence; for electric railways B60M 3/02)
References relevant to classification in this group
This subclass/group does not cover:
Regulating voltage or current for electric railways
Wherein the variable actually regulated by the final control device is dc (G05F 1/625 takes precedence)
References relevant to classification in this group
This subclass/group does not cover:
Voltage to current converters for amplifiers
Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties. [N: (current generators specially designed for use in phase-locked loops H03L 7/0891 )]
References relevant to classification in this group
This subclass/group does not cover:
Current generators specially designed for use in phase-locked loops
Regulating voltage or current wherein the variable is dc
References relevant to classification in this group
This subclass/group does not cover:
Regulation using uncontrolled devices with non-linear characteristics
Substrate bias-voltage generators for static stores
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
Regulating magnetic variables (details of apparatus for measuring magnetic variables involving magnetic resonance G01R 33/28)
References relevant to classification in this group
This subclass/group does not cover:
Details of apparatus for measuring magnetic variables involving magnetic resonance
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Last Modified: 10/11/2013