ClassID:

201779

H01F38/32 - CPC Classification

Classification description:

Adaptations of transformers or inductances for specific applications or functions; Instruments transformers for single phase ac; Current transformers Circuit arrangements

Recent Application in this class:
#1
20250322988
2025-10-16

CURRENT TRANSFORMER POLARITY VERIFICATION

#2
20250132089
2025-04-24

UNIVERSAL AC/DC CURRENT SENSOR AND ISOLATOR

#3
20250111992
2025-04-03

SWITCH CURRENT SENSORS

#4
20230181047
2023-06-15

MEDICAL DEVICE PROVIDED WITH SENSORS

#5
20220246350
2022-08-04

Current Transformer with Optic Fiber Mode Electronic Circuit

#6
20220165490
2022-05-26

Bus bar for minimizing AC loss in transformer and method of designing the same

#7
20200243256
2020-07-30

Transformer arrangement, circuit arrangement and method for operating a transformer arrangement

#8
20200176931
2020-06-04

Or relating to protection relays

#9
20200116762
2020-04-16

Current sensing device

#10
20200051738
2020-02-13

Current Transformer with Current Branches on Primary Conductor

#11
20190159684
2019-05-30

Medical device provided with sensors

#12
20190156998
2019-05-23

Current transformer module and power supply device including the same

#13
20190094287
2019-03-28

High-fidelity voltage measurement using resistive divider in a capacitance-coupled voltage transformer

#14
20190033345
2019-01-31

Current measuring device protected against electrical surges when opening the circuit

#15
20180330865
2018-11-15

Gapped resonant current transformer

#16
20180261368
2018-09-13

Demagnetization device and method for demagnetizing a transformer core

#17
20180090267
2018-03-29

Current transformer and direct current source based on current transformer

#18
20180076616
2018-03-15

Power cable assembly having a circuit protection device

#19
20170279228
2017-09-28

Plug

#20
20170212152
2017-07-27

Circuit for sampling current and system for sampling current of Totem-Pole bridgeless circuit

#21
20170179732
2017-06-22

Dynamic Tuning for Harvesting Energy from Current Transformers

#22
20170077827
2017-03-16

Portable electrical generator system for providing temporary distribution of single-phase and three-phase power

#23
20170047734
2017-02-16

Docking module for a current transformer for preventing overvoltages and a current transformer having a docking module

#24
20160231361
2016-08-11

Apparatus and methods thereof for power consumption measurement at circuit breaker points

#25
20160209451
2016-07-21

Apparatus and methods thereof for power consumption measurement at circuit breaker points

#26
20160209446
2016-07-21

CURRENT TRANSFORMER SYSTEM WITH CHARACTERIZATION

#27
20150112618
2015-04-23

Apparatus and methods thereof for power consumption measurement at circuit breaker points

#28
20140361761
2014-12-11

AC/DC current transformer

#29
20140028287
2014-01-30

Current transformer

#30
20130285645
2013-10-31

Apparatus and methods thereof for power consumption measurement at circuit breaker points

#31
20130207638
2013-08-15

Combination converter arrangement and switching device

#32
20130027818
2013-01-31

Transformer instrumentation and metering system

#33
20120299573
2012-11-29

AC/DC current transformer

#34
20120268100
2012-10-25

Error compensation for current transformer sensors

#35
20120063055
2012-03-15

Direct-current current transformer

#36
20120020121
2012-01-26

CURRENT DETECTION CIRCUIT AND SWITCHING REGULATOR CIRCUIT

#37
20110279942
2011-11-17

Surge current sensor and surge protection system including the same

#38
20100315095
2010-12-16

CURRENT TRANSFORMER AND ELECTRICAL MONITORING SYSTEM

#39
20100264906
2010-10-21

Apparatus and Methods Thereof for Power Consumption Measurement at Circuit Breaker Points

#40
20100253318
2010-10-07

HIGH VOLTAGE TO LOW VOLTAGE INDUCTIVE POWER SUPPLY WITH CURRENT SENSOR

#41
20100157490
2010-06-24

LEAKAGE CURRENT PROTECTION DEVICE

#42
20100148907
2010-06-17

CURRENT TRANSFORMER AND ELECTRICAL MONITORING SYSTEM

#43
20100109648
2010-05-06

Current sensing inductor and a circuit thereof

#44
20090237066
2009-09-24

CURRENT TRANSFORMER WITH IMPEDANCE COMPENSATION AND ASSOCIATED METHOD

#45
20090186504
2009-07-23

Locking system to keep movable contacts apart from fixed contacts of a short circuit

#46
20090146771
2009-06-11

Apparatus for Generating Secondary Electricity from an Electromagnetic Field Around a Wire

#47
20080232007
2008-09-25

Leakage current protection device

#48
20070126411
2007-06-07

Current transformer with impedance compensation and associated methods

#49
20050001706
2005-01-06

Low power consuming current measurements for high currents

#50
13154149
2015-05-19

Startup circuit