IPC 6 English version G05F !A-G05F 7/00

G05F-G05F00700

SECTION G– PHYSICS

G 05

CONTROLLING; REGULATING (specially adapted to a particular field of use, see the relevant place for that field, e.g. A 62 C 37/00, B 03 B 13/00, B 23 Q)

G 05 F

SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES (regulating the timing or recurrence frequency of pulses in radar or radio navigation systems G 01 S; closed-loop systems for regulating non-electric variables by electric means G 05 D; regulating power supply of digital computers G 06 F 1/26; regulating electric power distribution networks H 02 J; regulating the charging of batteries H 02 J 7/00; regulating of the output of static converters, e.g. switching regulators, H 02 M; regulation of the output of electric generators H 02 N, H 02 P 9/00, H 03 L; controlling transformers, reactors or choke coils H 02 P 13/00; regulating frequency response, gain, maximum output, amplitude or bandwidth of amplifiers H 03 G; regulating tuning of resonant circuits H 03 J; regulating characteristics of transmission lines H 04 B; electric control of X-ray apparatus H 05 G 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.

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 or moving of electrodes for spot or seam welding or cutting B 23 K 9/12; arrangements for feeding electrodes for electric heating or electric lighting H 05 B 7/109, H 05 B 31/18; automatic control of power for heating by discharge H 05 B 7/148) [2]

by means of saturable magnetic devices

by means of discharge tubes

by means of semiconductor devices

Regulating voltage or current (G 05 F 1/02 takes precedence; for electric railways B 60 M 3/02)

wherein the variable is actually regulated by the final control device is ac (G 05 F 1/625 takes precedence) [4]

using ferroresonant transformers as final control devices [4]

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

147

with motor driven tap switch [4]

153

controlled by discharge tubes or semiconductor devices [4]

combined with discharge tubes or semiconductor devices

semiconductor devices only

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

using bucking or boosting transformers as final control devices

247

with motor in control circuit [4]

253

the transformers including plural windings in series between source and load (G 05 F 1/247 takes precedence) [4]

combined with discharge tubes or semiconductor devices

semiconductor devices only

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

325

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

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

335

on different cores [4]

combined with discharge tubes or semiconductor devices

semiconductor devices only

using discharge tubes or semiconductor devices as final control devices

discharge tubes only

semiconductor devices only

445

being transistors in series with the load [3]

being controlled rectifiers in series with the load [3]

455

with phase control [3]

wherein the variable actually regulated by the final control device is dc (G 05 F 1/625 takes precedence) [4]

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

additionally controlled by the unregulated supply

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

563

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

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 (G 05 F 1/563 takes precedence) [4]

567

for temperature compensation [4]

569

for protection [4]

571

with overvoltage detector [4]

573

with overcurrent detector [4]

575

characterised by the feedback circuit [4]

577

for plural loads [4]

585

providing voltages of opposite polarities [4]

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

595

semiconductor devices connected in series [4]

607

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

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

613

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

614

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

618

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

using bucking or boosting dc sources

625

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

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

635

being Hall effect devices, magnetoresistors or thermistors [4]

644

being pressure-sensitive resistors [4]

648

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

652

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

656

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

Regulating electric power

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

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

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

Regulating voltage or current

wherein the variable is ac

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

wherein the variable is dc

using uncontrolled devices with non-linear characteristics [4]

being glow discharge tubes

being semiconductor devices [3]

using Zener diodes [3]

using diode-transistor combinations (G 05 F 3/18 takes precedence) [3]

wherein the transistors are of the bipolar type only (G 05 F 3/26, G 05 F 3/30 take precedence) [4]

wherein the transistors are of the field-effect type only (G 05 F 3/26, G 05 F 3/30 take precedence) [4]

Current mirrors [4]

combined with a non-linear current amplifier [4]

Regulators using the difference between the base-emitter voltages of two bipolar transistors operating at different current densities (G 05 F 3/26 takes precedence) [4]

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

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

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

saturable [4]

using a linearly acting final control device [4]

Regulating magnetic variables (details of apparatus for measuring magnetic variables involving magnetic resonance G 01 R 33/28) [5]