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IPC 7
G05F-G05F00700

SECTION G – PHYSICS


G 05CONTROLLING; REGULATING


G 05 FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES (regulating the timing or recurrence frequency of pulses in radar or radio navigation systems G01S; regulation of current or voltage, specially adapted for use in electronic time-pieces G04G 19/02; closed-loop systems for regulating non-electric variables by electric means G05D; regulating power supply of digital computers G06F 1/26; for obtaining desired operating characteristics of electromagnets with armatures H01F 7/18; regulating electric power distribution networks H02J; regulating the charging of batteries H02J 7/00; regulating of the output of static converters, e.g. switching regulators, H02M; regulation of the output of electric generators H02N, H02P 9/00; controlling transformers, reactors or choke coils H02P 13/00; regulating frequency response, gain, maximum output, amplitude or bandwidth of amplifiers H03G; regulating tuning of resonant circuits H03J; controlling generators of electronic oscillations or pulses H03L; regulating characteristics of transmission lines H04B; controlling electric light sources H05B 37/02, H05B 39/04, H05B 41/36; electric control of X-ray apparatus H05G 1/30) [4,5]


Notes

(1)This subclass covers:

 systems only;

 use of hydraulic, 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 essential characteristic resides in the combination.  [4]

(2)This subclass does not cover elements per se, which are covered by the relevant subclasses.



1/

00Automatic 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

1/

02.Regulating electric characteristics of arcs (arrangements for feeding or moving of electrodes for spot or seam welding or cutting B23K 9/12; arrangements for feeding electrodes for electric heating or electric lighting H05B 7/109, H05B 31/18; automatic control of power for heating by discharge H05B 7/148)  [2]

1/

04..by means of saturable magnetic devices

1/

06..by means of discharge tubes

1/

08..by means of semiconductor devices

1/

10.Regulating voltage or current (G05F 1/02 takes precedence; for electric railways B60M 3/02)

1/

12..wherein the variable is actually regulated by the final control device is ac (G05F 1/625 takes precedence)  [4]

1/

13...using ferroresonant transformers as final control devices  [4]

1/

14...using tap transformers or tap changing inductors as final control devices  [4]

1/

147....with motor driven tap switch  [4]

1/

153.....controlled by discharge tubes or semiconductor devices  [4]

1/

16....combined with discharge tubes or semiconductor devices

1/

20.....semiconductor devices only

1/

22....combined with separate magnetic control devices having a controllable degree of saturation

1/

24...using bucking or boosting transformers as final control devices

1/

247....with motor in control circuit  [4]

1/

253....the transformers including plural windings in series between source and load (G05F 1/247 takes precedence)  [4]

1/

26....combined with discharge tubes or semiconductor devices

1/

30.....semiconductor devices only

1/

32...using magnetic devices having a controllable degree of saturation as final control devices

1/

325....with specific core structure, e.g. gap, aperture, slot, permanent magnet  [4]

1/

33....with plural windings through which current to be controlled is conducted  [4]

1/

335.....on different cores  [4]

1/

34....combined with discharge tubes or semiconductor devices

1/

38.....semiconductor devices only

1/

40...using discharge tubes or semiconductor devices as final control devices

1/

42....discharge tubes only

1/

44....semiconductor devices only

1/

445.....being transistors in series with the load  [3]

1/

45.....being controlled rectifiers in series with the load  [3]

1/

455......with phase control  [3]

1/

46..wherein the variable actually regulated by the final control device is dc (G05F 1/625 takes precedence)  [4]

1/

52...using discharge tubes in series with the load as final control devices

1/

54....additionally controlled by the unregulated supply

1/

56...using semiconductor devices in series with the load as final control devices

1/

563....including two stages of regulation, at least one of which is output level responsive, e.g. coarse and fine regulation  [4]

1/

565....sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor (G05F 1/563 takes precedence)  [4]

1/

567.....for temperature compensation  [4]

1/

569.....for protection  [4]

1/

571......with overvoltage detector  [4]

1/

573......with overcurrent detector  [4]

1/

575....characterised by the feedback circuit  [4]

1/

577....for plural loads  [4]

1/

585.....providing voltages of opposite polarities  [4]

1/

59....including plural semiconductor devices as final control devices for a single load  [4]

1/

595.....semiconductor devices connected in series  [4]

1/

607...using discharge tubes in parallel with the load as final control devices  [3]

1/

61....including two stages of regulation, at least one of which is output level responsive  [4]

1/

613...using semiconductor devices in parallel with the load as final control devices  [3]

1/

614....including two stages of regulation, at least one of which is output level responsive  [4]

1/

618...using semiconductor devices in series and in parallel with the load as final control devices  [4]

1/

62...using bucking or boosting dc sources

1/

625..wherein it is irrelevant whether the variable actually regulated is ac or dc  [4]

1/

63...using variable impedances in series with the load as final control devices  [4]

1/

635....being Hall effect devices, magnetoresistors or thermistors  [4]

1/

644....being pressure-sensitive resistors  [4]

1/

648....being plural resistors among which a selection is made  [4]

1/

652...using variable impedances in parallel with the load as final control devices  [4]

1/

656...using variable impedances in series and in parallel with the load as final control devices  [4]

1/

66.Regulating electric power

1/

67..to the maximum power available from a generator, e.g. from solar cell  [4]

1/

70.Regulating power factor; Regulating reactive current or power  [3]


3/

00Non-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

3/

02.Regulating voltage or current

3/

04..wherein the variable is ac

3/

06...using combinations of saturated and unsaturated inductive devices, e g. combined with resonant circuit

3/

08..wherein the variable is dc

3/

10...using uncontrolled devices with non-linear characteristics  [4]

3/

12....being glow discharge tubes

3/

16....being semiconductor devices  [3]

3/

18.....using Zener diodes  [3]

3/

20.....using diode-transistor combinations (G05F 3/18 takes precedence)  [3]

3/

22......wherein the transistors are of the bipolar type only (G05F 3/26, G05F 3/30 take precedence)  [4]

3/

24......wherein the transistors are of the field-effect type only (G05F 3/26, G05F 3/30 take precedence)  [4]

3/

26......Current mirrors  [4]

3/

28.......combined with a non-linear current amplifier  [4]

3/

30......Regulators using the difference between the base-emitter voltages of two bipolar transistors operating at different current densities (G05F 3/26 takes precedence)  [4]


5/

00Systems 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

5/

02.Phase controlled switching using electronic tubes or three or more terminal semiconductive devices  [4]

5/

04.using a transformer or inductor as the final control device  [4]

5/

06..saturable  [4]

5/

08.using a linearly acting final control device  [4]


7/

00Regulating magnetic variables (details of apparatus for measuring magnetic variables involving magnetic resonance G01R 33/28) [5]


  
 

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