H01H47/04 - CPC Classification Index

ClassID:

203227 ⎘

H01H47/04 - CPC Classification

Classification description:

Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current

Sub-classes:

H01H2047/046 » {with measuring of the magnetic field, e.g. of the magnetic flux, for the control of coil current} 6
H01H47/043 » {making use of an energy accumulator } 14
H01H47/06 » by changing number of serially-connected turns or windings 8
H01H47/08 » by changing number of parallel-connected turns or windings 8
H01H47/10 » by switching-in or -out impedance external to the relay winding 13

Recent Application in this class:

20260148920

2026-05-28

RELAY

20260142108

2026-05-21

ECONOMIZING ELECTROMECHANICAL CONTACTORS

20260038757

2026-02-05

RELAY

20230170171

2023-06-01

ELECTROMECHANICAL SWITCHING DEVICE FOR AN ELECTRIC POWER CIRCUIT COMPRISING AT LEAST ONE SYSTEM FOR DETECTING THE CONTACT OR NON-CONTACT POSITION OF A BLADE OF A CONTACTOR

20230146895

2023-05-11

Relay control apparatus and method

20220152641

2022-05-19

Systems and methods for controlling operation of a valve

20220102101

2022-03-31

Relay device and control method of relay device

20220051862

2022-02-17

Relay

20210313131

2021-10-07

RELAY MODULE

#10

20200273649

2020-08-27

Relay and power battery circuit using the same

#11

20200101480

2020-04-02

Systems and methods for controlling operation of a valve

#12

20190368767

2019-12-05

Air conditioner having relay coil abnormality voltage control

#13

20180366288

2018-12-20

Circuit arrangement for operating electromagnetic drive systems

#14

20180294120

2018-10-11

Method for controlling electrical current switchgear, electromagnetic actuator comprising a circuit for implementing this method and electrical switchgear comprising such an actuator

#15

20180274622

2018-09-27

Damper with power drive electronics

#16

20180233312

2018-08-16

Circuit arrangement for operating at least one relay

#17

20180102229

2018-04-12

Contactor having electronic coil control

#18

20180061604

2018-03-01

Controllable tripout for an electrical circuit breaker

#19

20180047535

2018-02-15

Relay control device

#20

20170247917

2017-08-31

Bus configured latching solenoid

#21

20170110274

2017-04-20

Electric switch having an electromagnetic actuator

#22

20170092453

2017-03-30

Contractor with micro-solenoid and device for retention of core of micro-solenoid for motor vehicle starter, and corresponding starter

#23

20170062164

2017-03-02

Micro-solenoid contactor for motor vehicle starter, and corresponding starter

#24

20160293363

2016-10-06

Method for controlling a contactor device, and control unit

#25

20160203931

2016-07-14

Systems and methods for freewheel contactor circuits

#26

20160172138

2016-06-16

Relay with first and second electromagnets for placing and keeping a contact in a closed state

#27

20160129862

2016-05-12

Assistance device and method for a power generation system of an aircraft

#28

20160042899

2016-02-11

Contactor, contactor assembly and control circuit

#29

20150371800

2015-12-24

ELECTROMAGNETIC RELAY

#30

20150357141

2015-12-10

Systems and methods for controlling relays

#31

20150348729

2015-12-03

Systems and methods for controlling relays

#32

20150325396

2015-11-12

Contactor coil current reduction during vehicle battery charging

#33

20150294821

2015-10-15

Drive circuit for n contactors and a method for driving n contactors

#34

20150084723

2015-03-26

Current sensor

#35

20140268474

2014-09-18

METHOD OF CLOSING A RELAY SWITCH AND APPARTUS THEREOF

#36

20140268473

2014-09-18

Electric vehicle support equipment having a smart plug with a relay control circuit

#37

20140145803

2014-05-29

Electromagnetic relay

#38

20140092517

2014-04-03

Electromagnetic relay

#39

20140043872

2014-02-13

Control device for a switching device with separate start-up and holding coils

#40

20140001832

2014-01-02

Driver circuit for an electric vehicle and a diagnostic method for determining when a first voltage driver is shorted to a high voltage and a second voltage driver has a low electrical current flowing therethrough

#41

20130279061

2013-10-24

Drive circuit for an electromagnetic relay

#42

20130083444

2013-04-04

METHOD AND APPARATUS FOR RELAY CONTROL

#43

20130009464

2013-01-10

System and Method for Controlling a Battery Pack Output Contactor

#44

20130003246

2013-01-03

CONDITIONING CIRCUIT FOR AN ELECTROMAGNETIC SWITCHING DEVICE

#45

20120106021

2012-05-03

Methods and apparatus for improved relay control

#46

20120068477

2012-03-22

Starter solenoid with rectangular coil winding

#47

20110292558

2011-12-01

Driving circuit for AC contactor

#48

20110273811

2011-11-10

Starter for thermal engine equipped with electronic control device

#49

20110273250

2011-11-10

Double contact electromagnetic contactor and starter for thermal engine incorporating it

#50

20100309600

2010-12-09

Apparatus for determining and/or monitoring a process variable

#51

20100165535

2010-07-01

Method and device for operating a switching device

#52

20100127808

2010-05-27

Coil configuration having a coil brace of an electromagnetic drive

#53

20090262480

2009-10-22

Electromagnetic actuating device with coils capable of holding electrification in series connection after being actuated in parallel connection

#54

20090128979

2009-05-21

System and method for protecting a coil structure in a controlled switch

#55

20080238594

2008-10-02

Low-power numerically controlled contactor and control system made of the contactors

#56

20080170348

2008-07-17

Constant current relay driver with controlled sense resistor

#57

20070230084

2007-10-04

Electrical circuit for a self-retaining relay

#58

20070229204

2007-10-04

MICRO-MECHANICAL MODULATING ELEMENT, MICRO-MECHANICAL MODULATING ELEMENT ARRAY, IMAGE FORMING APPARATUS, AND METHOD OF DESIGNING A MICRO-MECHANICAL MODULATING ELEMENT

#59