ClassID:

216664

H02H3/003 - CPC Classification

Classification description:

Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to reversal of power transmission direction

Recent Application in this class:
#1
20250372999
2025-12-04

POTENTIAL GENERATING CIRCUIT, REVERSE FLOW PREVENTING CIRCUIT, AND CONTROL METHOD OF POTENTIAL GENERATING CIRCUIT

#2
20250246915
2025-07-31

ELECTRICAL POWER SUPPLY SYSTEM, MOVING OBJECT, AND METHOD OF CONTROLLING ELECTRICAL POWER SUPPLY SYSTEM

#3
20230378950
2023-11-23

LOAD SWITCH AND POWER SYSTEM

#4
20230048562
2023-02-16

Surge-immune DC input supply apparatus

#5
20220352706
2022-11-03

Fault-protected analog and digital input/output interface

#6
20210210944
2021-07-08

Reverse polarity protection device

#7
20210109555
2021-04-15

Power supply module

#8
20210091558
2021-03-25

SECTIONALIZING SEQUENCE ORDER

#9
20210091557
2021-03-25

Locating and isolating grid faults utilizing a fast close-open operation

#10
20200366278
2020-11-19

Load drive circuit configured to prevent a flyback current

#11
20200007037
2020-01-02

High efficiency power regulator and method

#12
20190393692
2019-12-26

Backflow prevention circuit and power supply circuit

#13
20190393661
2019-12-26

Infrastructure for mobile devices and electronic loose equipment

#14
20190372452
2019-12-05

Voltage converting circuit and control circuit thereof

#15
20180331093
2018-11-15

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

#16
20180102636
2018-04-12

Reverse current protection circuit for switch circuit

#17
20180090922
2018-03-29

Method and Apparatus for Automatic Electricity Backfeed Protection

#18
20170353025
2017-12-07

Method and Apparatus for Automatic Electricity Backfeed Protection

#19
20170288392
2017-10-05

Electronic device with reverse voltage protection circuitry for multiple control lines

#20
20170213642
2017-07-27

Earth surface potential and harmonic mitigating transformers

#21
20170013694
2017-01-12

Circuit device, lighting device, and vehicle using the same

#22
20160254751
2016-09-01

High efficiency power regulator and method

#23
20160248208
2016-08-25

Infrastructure for mobile devices and electronic loose equipment

#24
20160079747
2016-03-17

Back power protection circuit

#25
20160049783
2016-02-18

Backflow preventing device, power conversion device, and refrigeration air-conditioning apparatus

#26
20150349510
2015-12-03

REVERSE BLOCKING APPARATUS FOR ELECTRONIC DEVICE AND SWITCH APPARATUS INCLUDING THE SAME

#27
20150333500
2015-11-19

Energizing system and method

#28
20150326002
2015-11-12

PROTECTIVE CIRCUIT

#29
20150303696
2015-10-22

Power generation and control system

#30
20140226246
2014-08-14

High efficiency power regulator and method

#31
20140160600
2014-06-12

Reverse voltage condition protection in a power supply system

#32
20140002936
2014-01-02

Protection circuit

#33
20130342946
2013-12-26

PARALLEL PROTECTION CIRCUIT FOR SOLAR MODULE

#34
20130242444
2013-09-19

Protective device for protection of an electrical circuit against reversal of polarity, method, circuit arrangement and vehicle system

#35
20130234434
2013-09-12

Overvoltage clipping device for a wind turbine and method

#36
20130169068
2013-07-04

Device and system for reducing overvoltage damange

#37
20130141025
2013-06-06

Motor drive circuit

#38
20130070372
2013-03-21

Protection circuit, resonant converter including the protection circuit, and protecting method of the resonant converter

#39
20130033786
2013-02-07

High efficiency power regulator and method

#40
20120081819
2012-04-05

Leakage protection outlet

#41
20120075043
2012-03-29

CIRCUIT BREAKER WITH A DIGITAL DATA PROCESSING DEVICE

#42
20120002335
2012-01-05

Protection circuit and electronic device using the same

#43
20100226050
2010-09-09

Protection circuit, resonant converter including the protection circuit, and protecting method of the resonant converter

#44
20100052429
2010-03-04

Power generation and control system

#45
20070110111
2007-05-17

Power system for ultraviolet lighting

#46
20060126241
2006-06-15

AC power backfeed protection based on phase shift

#47
20060126240
2006-06-15

AC power backfeed protection based on voltage

#48
17480853
2025-06-17

Electricity interrupter vehicle safety device, system and method