ClassID:

216874

H02H11/003 - CPC Classification

Classification description:

Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection using a field effect transistor as protecting element in one of the supply lines

Recent Application in this class:
#1
20260121537
2026-04-30

POWER SUPPLY CIRCUIT FOR PREVENTING INTERNAL BREAKDOWN

#2
20250379442
2025-12-11

Power Access System, Power Supply Apparatus, and Power-Consuming Apparatus

#3
20250343409
2025-11-06

SYSTEM INCLUDING AN IDEAL DIODE CIRCUIT FOR NEGATIVE TRANSIENT PROTECTION

#4
20250286368
2025-09-11

ELECTRICAL WIRING DEVICE WITH WIRING DETECTION AND CORRECTION

#5
20250219398
2025-07-03

AUTOMOTIVE-GRADE CHIP, PROTECTION CIRCUIT, AND VEHICLE-MOUNTED CIRCUIT

#6
20250079823
2025-03-06

SUBSTRATE PARASITE REDUCTION TECHNIQUE

#7
20250038679
2025-01-30

LOAD DRIVING DEVICE

#8
20250007302
2025-01-02

REVERSE POLARITY TURN-ON CIRCUIT FOR FLOATING FET DRIVER

#9
20240421617
2024-12-19

AUTOMOTIVE INTEGRATED CIRCUIT

#10
20240222952
2024-07-04

ELECTRONIC PROTECTION DEVICE FOR AN ELECTRICAL LOAD, POWER SUPPLY SYSTEM FOR AN ELECTRICAL LOAD AND METHOD FOR CONTROLLING SUCH A DEVICE

#11
20240106329
2024-03-28

POWER SUPPLY CIRCUIT

#12
20240030700
2024-01-25

Polarity protection for a converter

#13
20230283067
2023-09-07

Soft turn-off active clamp protection circuit and power system

#14
20230045908
2023-02-16

Electrical wiring device with wiring detection and correction

#15
20220344931
2022-10-27

Direct-current power supply parallel-machine input reverse connection prevention circuit and server system

#16
20220247189
2022-08-04

Reverse polarity protected battery module

#17
20220239096
2022-07-28

LOAD DRIVING DEVICE

#18
20220029415
2022-01-27

Method and apparatus for protecting a load against an overcurrent

#19
20220006374
2022-01-06

Reverse polarity protection circuit for a DC-DC converter

#20
20210391715
2021-12-16

Polarity reversal protection circuit

#21
20210159694
2021-05-27

Multi-line supply unit for a vehicle control unit

#22
20210091642
2021-03-25

CIRCUIT SUBSTRATE AND ELECTRIC OIL PUMP

#23
20210050340
2021-02-18

Electrostatic discharge protection circuit and structure thereof

#24
20210044206
2021-02-11

POWER SOURCE, LOAD AND METHODS FOR PROVIDING AND RECEIVING POWER

#25
20200343722
2020-10-29

Electrical wiring device with wiring detection and correction

#26
20200262309
2020-08-20

Electronic control unit

#27
20200259327
2020-08-13

Polarity-reversal protection arrangement, method for operating the polarity-reversal-protection arrangement and corresponding use

#28
20200212672
2020-07-02

Protection circuit with bidirectional surge protection

#29
20200091714
2020-03-19

Semiconductor device

#30
20200076190
2020-03-05

Supply protection circuit that protects power transistor from a supply signal of an incorrect polarity

#31
20200013319
2020-01-09

Protective circuit and display device

#32
20190305569
2019-10-03

Decorative portable power charger

#33
20190288506
2019-09-19

Battery reverse voltage prevention system and method

#34
20190027945
2019-01-24

Reverse current prevention for FET used as reverse polarity protection device

#35
20180331093
2018-11-15

Protection circuit and operational method of the protection circuit, and semiconductor integrated circuit apparatus

#36
20180287379
2018-10-04

Negative voltage tolerant IO circuitry for IO pad

#37
20180278042
2018-09-27

Fall-off protection and reverse-connection protection system and method for connecting clamp of automobile starting power supply

#38
20180248355
2018-08-30

Reverse connection protection circuit and load system

#39
20180149694
2018-05-31

Failure diagnosis circuit and failure diagnosis method

#40
20180102636
2018-04-12

Reverse current protection circuit for switch circuit

#41
20170366004
2017-12-21

Semiconductor integrated circuit device

#42
20170317490
2017-11-02

Enablement of device power-on with proper assembly

#43
20170264280
2017-09-14

Semiconductor device, charge pump circuit, semiconductor system, vehicle, and control method of semiconductor device

#44
20170222455
2017-08-03

Decorative portable power charger

#45
20170163033
2017-06-08

Power switch capable of preventing reverse connection

#46
20170126004
2017-05-04

Apparatus to provide reverse polarity protection

#47
20170013694
2017-01-12

Circuit device, lighting device, and vehicle using the same

#48
20170005491
2017-01-05

Receptacle for monitoring and controlling parallel batteries

#49
20160301235
2016-10-13

Power switch device and system using same

#50
20160241015
2016-08-18

Reverse battery protection for battery-powered devices

#51
20160241013
2016-08-18

Apparatus and method for reverse battery protection

#52
20160218499
2016-07-28

Self-sensing reverse current protection switch

#53
20160142002
2016-05-19

Controller of an electric motor

#54
20160072274
2016-03-10

Protection device and method for electronic device

#55
20150349514
2015-12-03

MULTIFUNCTIONAL ELECTRICAL POWER OUTPUT PROTECTION DEVICE

#56
20150280589
2015-10-01

DC-DC converter with polarity reversal protection

#57
20150214722
2015-07-30

Reverse battery protection device and operating method thereof

#58
20140362484
2014-12-11

Load driving device

#59
20140352705
2014-12-04

Electronic cigarette battery reverse connection protection device and method for using the same

#60
20140268455
2014-09-18

Reverse battery protection for battery-powered devices

#61
20140257632
2014-09-11

In-vehicle electronic control unit and power feeding control method of the same

#62
20140239713
2014-08-28

Power supply branching control apparatus and method for supplying power to electric loads

#63
20140029146
2014-01-30

Electronic device for protecting against a polarity reversal of a DC power supply voltage, and its application to motor vehicles

#64
20130229738
2013-09-05

Circuit for protecting against reverse polarity

#65
20130193754
2013-08-01

Electronic control unit for automobile

#66
20130181693
2013-07-18

Switching circuit and power supply device including switch circuit

#67
20130107406
2013-05-02

Process control field device with circuitry protection

#68
20130033181
2013-02-07

Lamp assembly and circuits for protection against miswiring in a lamp controller

#69
20110273018
2011-11-10

High-efficiency DC ballast arrangement with automatic polarity protection and emergency back-up for lighting fixture in a suspended DC-powered ceiling system

#70
20110204728
2011-08-25

Battery backup protection circuit

#71
20110195744
2011-08-11

Reverse voltage protection circuit

#72
20110102956
2011-05-05

Load driving device

#73
20110026171
2011-02-03

Electronic device for protecting against a polarity reversal of a DC power supply voltage, and its application to motor vehicles

#74
20100208401
2010-08-19

INDUCTIVE LOAD DRIVING CIRCUIT

#75
20100118459
2010-05-13

System and method for protection against loss of battery in reverse battery protected devices

#76
20100109588
2010-05-06

Motor drive circuit and electric power steering apparatus

#77
20100046132
2010-02-25

Fan system and power reverse protection apparatus thereof

#78
20100033012
2010-02-11

Motor Vehicle Controller With Polarity-Reversal Protection

#79
20090310270
2009-12-17

Fast-responding short circuit protection system with self-reset for use in circuit supplied by DC power

#80
20090219659
2009-09-03

Motor control circuit with malfunction monitoring

#81
20090190278
2009-07-30

ELECTRONIC DEVICE HAVING REVERSE CONNECTION PROTECTION CIRCUIT

#82
20090066403
2009-03-12

EMC protection circuit

#83
20080285191
2008-11-20

Backflow preventing circuit capable of preventing reverse current efficiently

#84
20080247108
2008-10-09

Load drive device

#85
20070268048
2007-11-22

Power supply control circuit, and electronic control device, power supplying circuit, and power control integrated circuit equipped with power supply control circuit

#86
20070139836
2007-06-21

Backflow preventing circuit capable of preventing reverse current efficiently

#87
20070064362
2007-03-22

Method of forming an integrated voltage protection device and structure

#88
20060227475
2006-10-12

Direct current motor control circuit and wiper system using said circuit

#89
20060202746
2006-09-14

NMOS reverse battery protection

#90
20050127859
2005-06-16

32V H-bridge driver with CMOS circuits

#91
16133706
2019-11-19

Fast-acting power protection system incorporating discrete MOSFETs and control IC on hybrid substrates and method of operating thereof

#92
14929181
2018-11-06

Power supply charge pump and protection circuit