ClassID:

217811

H02M3/08 - CPC Classification

Classification description:

Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes without control electrode or semiconductor devices without control electrode

Recent Application in this class:
#1
20250379516
2025-12-11

APPARATUS AND OPTIONAL UNIT

#2
20250364894
2025-11-27

DC-DC BOOST CIRCUIT AND DRIVING CIRCUIT BOARD

#3
20250239932
2025-07-24

DIRECT CURRENT CONVERSION CIRCUIT AND PHOTOVOLTAIC INVERTER

#4
20250167591
2025-05-22

WIDE-RANGE POWER-REGULATION METHOD FOR WIRELESS POWER RECEIVING UNITS BY USING HYBRID MULTI-LEVEL TOPOLOGIES

#5
20240332434
2024-10-03

Refined Solar Panel String Converter Topology

#6
20230261586
2023-08-17

Booster circuit and voltage generator

#7
20230082916
2023-03-16

DC-DC conversion

#8
20230052209
2023-02-16

Modulation in a contact hearing system

#9
20220379746
2022-12-01

DC LINK CHARGING OF CAPACITOR IN A WIRELESS POWER TRANSFER PAD

#10
20220352394
2022-11-03

Solar panel power conversion circuit

#11
20220255313
2022-08-11

Disconnection arc prevention in cable-supplied power connection

#12
20210160631
2021-05-27

Modulation in a contact hearing system

#13
20210152957
2021-05-20

Demodulation in a contact hearing system

#14
20210152956
2021-05-20

Quality factor in a contact hearing system

#15
20210152952
2021-05-20

Intermodulation distortion reduction in a contact hearing system

#16
20210152951
2021-05-20

Inductive coupling coil structure in a contact hearing system

#17
20210152950
2021-05-20

Nearfield inductive coupling in a contact hearing system

#18
20210152948
2021-05-20

Eartip venting in a contact hearing system

#19
20210066885
2021-03-04

Laser diode driver circuit techniques

#20
20200343388
2020-10-29

DC power conversion circuit

#21
20200153334
2020-05-14

DC-DC converter for a low voltage power source

#22
20200021147
2020-01-16

Inductor device, non-contact power charging/supplying system and electric vehicle

#23
20190296730
2019-09-26

SEMICONDUCTOR DEVICE AND POWER CONVERTOR

#24
20190238001
2019-08-01

DC link charging of capacitor in a wireless power transfer pad

#25
20190066907
2019-02-28

Electronic Component and Process for Producing Same

#26
20190027105
2019-01-24

DC voltage conversion circuit, DC voltage conversion method and liquid crystal display device

#27
20180374965
2018-12-27

DC power conversion circuit

#28
20180337543
2018-11-22

Constant-current charging circuit, energy storage power source and constant-current charging method

#29
20180205315
2018-07-19

SWITCHED-CAPACITOR POWER CONVERTERS

#30
20180175639
2018-06-21

ELECTRICAL EQUIPMENT AND ELECTRONIC CIRCUIT FOR ANTI CORROSION TREATMENT ON METAL SURFACES

#31
20180166984
2018-06-14

Voltage regulator having boost and charge pump functionality

#32
20170279351
2017-09-28

STABILIZED NON-INDUCTIVE VOLTAGE BOOST CONVERTER OPERATING AT MOS SUB-THRESHOLD VOLTAGE FROM ANALAGOUS MICROPOWER PYROELECTRIC DEVICE

#33
20170229957
2017-08-10

THD IN OFF-LINE CONVERTERS

#34
20170163278
2017-06-08

Semiconductor device, power supply device and control method for semiconductor device

#35
20170150860
2017-06-01

Power supply apparatus, and electric apparatus and vacuum cleaner having the same

#36
20170063220
2017-03-02

State space-based multi-level voltage regulator system

#37
20170040889
2017-02-09

Dynamic threshold generator for use in adaptive body biasing of a MOS

#38
20170008415
2017-01-12

Power supply system

#39
20160294192
2016-10-06

Power control apparatus and power conditioner

#40
20160268809
2016-09-15

DC power conversion circuit

#41
20160056715
2016-02-25

Power conversion apparatus and refrigeration air-conditioning apparatus

#42
20150288277
2015-10-08

Switch power converter and frequency response characteristic testing and adjusting method thereof

#43
20150280551
2015-10-01

Booster apparatus for a direct current voltage generator

#44
20150137881
2015-05-21

High-voltage-tolerant pull-up resistor circuit

#45
20150022179
2015-01-22

VOLTAGE TRANSFORMER HAVING A FIRST PARALLEL CONNECTION

#46
20150002119
2015-01-01

Power supply regulator

#47
20120223584
2012-09-06

Solar panel string converter topology

#48
20090102543
2009-04-23

NEGATIVE VOLTAGE GENERATING CIRCUIT

#49
20080067980
2008-03-20

Method and Apparatus for Using Momentary Switches in Pulsed Power Applications

#50
20070291514
2007-12-20

DC-DC converter for low voltage power source

#51
15425195
2017-12-05

Control method to avoid capacitive mode switching for resonant converters

#52
14839592
2017-01-24

Protection circuit

#53
13373662
2019-12-03

Sub-circuit with cyclically swapped standby circuits