ClassID:

201784

H01F38/42 - CPC Classification

Classification description:

Adaptations of transformers or inductances for specific applications or functions Flyback transformers

Sub-classes:
Recent Application in this class:
#1
20260018989
2026-01-15

Optimized Snubber

#2
20250293584
2025-09-18

Two-Transistor Flyback Topology With Rompower High Efficiency Passive Clamp

#3
20250196665
2025-06-19

INTEGRATED POWER MODULE FOR ELECTRIC VEHICLE

#4
20250105723
2025-03-27

Totem Pole, Zero Voltage Switching Power Factor Correction Operating At Constant Frequency

#5
20240387096
2024-11-21

RESONANT TRANSFORMERS WITH CALIBRATABLE FLUX-SHUNT

#6
20240250602
2024-07-25

Energy Extraction From The Parasitic Elements In Power Converters

#7
20240145163
2024-05-02

TRANSFORMER

#8
20240128019
2024-04-18

WINDING, TRANSFORMER AND SWITCHING POWER SUPPLY

#9
20240022165
2024-01-18

Energy Extraction And Utilization From The Parasitic Elements In Power Converters

#10
20240022162
2024-01-18

Energy extraction from the parasitic elements in power converters

#11
20230402912
2023-12-14

Energy Injection In A Resonant Circuit With Initial Conditions

#12
20220209677
2022-06-30

Energy recovery from the leakage inductance of the transformer

#13
20220029523
2022-01-27

Energy injection in a resonant circuit with initial conditions

#14
20220018181
2022-01-20

Control circuitry for dynamic shade with electrostatic holding, and/or associated methods

#15
20220006317
2022-01-06

Hybrid battery charger

#16
20210376744
2021-12-02

Energy recovery from the leakage inductance of the transformer

#17
20210344202
2021-11-04

Device for suppressing potential induced degradation and system

#18
20200251278
2020-08-06

High-voltage transformer and electronic power apparatus

#19
20200033931
2020-01-30

High speed / low power server farms and server networks

#20
20190115845
2019-04-18

Energy recovery from the leakage inductance of the transformer

#21
20180241299
2018-08-23

Energy injection in a resonant circuit with initial conditions

#22
20180201300
2018-07-19

Dual usage of inductor core in power supplies

#23
20180192486
2018-07-05

FLYBACK BIFILAR/MULTIFILAR SYMMETRIC TRANSFORMER

#24
20180109115
2018-04-19

Electronic device

#25
20180061566
2018-03-01

Trans inductor and power converter using the same

#26
20170331294
2017-11-16

Device for suppressing potential induced degradation and system

#27
20170330678
2017-11-16

Matrix planar transformer

#28
20170222563
2017-08-03

Power supply module and mounting structure therefor

#29
20170210234
2017-07-27

Hybrid battery charger

#30
20170047848
2017-02-16

Transformer, flyback converter and switching power supply with the same

#31
20160181008
2016-06-23

Transformer

#32
20150221432
2015-08-06

Electronic device

#33
20150162127
2015-06-11

TRANSFORMER USED FOR STORING AND FILTERING

#34
20150117064
2015-04-30

Transformer and high voltage power supply apparatus having the same

#35
20130308348
2013-11-21

Converter

#36
20120119676
2012-05-17

FLYBACK POWER CONVERTER WITH DIVIDED ENERGY TRANSFER ELEMENT

#37
20110074532
2011-03-31

Low cost charger transformer

#38
20100026440
2010-02-04

Method of manufacture of a variable inductance inductor

#39
20090295530
2009-12-03

Multi-chamber transformer

#40
20090278648
2009-11-12

Integrated magnetic device and conductive structure thereof

#41
20090278646
2009-11-12

Structure of transformer

#42
20090108975
2009-04-30

HIGH-VOLTAGE TRANSFORMER

#43
20090096562
2009-04-16

HIGH-VOLTAGE TRANSFORMER

#44
20080024261
2008-01-31

High Voltage Transformer

#45
20080007381
2008-01-10

Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components

#46
20070241851
2007-10-18

Method and apparatus for substantially reducing electrical displacement current flow between input and output circuits coupled to input and output windings of an energy transfer element

#47
20070230221
2007-10-04

Method and apparatus for three-dimensional integration of embedded power module

#48
20070222549
2007-09-27

Co-fired ceramic inductors with variable inductance, and voltage regulator having same

#49
20070222548
2007-09-27

Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components

#50
20070080771
2007-04-12

Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components

#51
20070030109
2007-02-08

Wound-rotor type transformer and power source utilizing wound-rotor type transformer

#52
20060284717
2006-12-21

Flyback transformer wire attach method to printed circuit board

#53
20060244398
2006-11-02

Transformer

#54
20060092673
2006-05-04

Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components

#55
20060072348
2006-04-06

Method and apparatus for substantially reducing electrical displacement current flow between input and output circuits coupled to input and output windings of an energy transfer element

#56
20060034101
2006-02-16

Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components

#57
20050280492
2005-12-22

Wound-rotor type transformer and power source utilizing wound-rotor type transformer

#58
20050258925
2005-11-24

Flyback transformer wire attach method to printed circuit board

#59
20050174210
2005-08-11

Step-up transformer

#60
20050146902
2005-07-07

Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components

#61
20050017054
2005-01-27

Flyback transformer wire attach method to printed circuit board

#62
20050012584
2005-01-20

Method and apparatus for substantially reducing electrical displacement current flow between input and output windings of an energy transfer element

#63
20050007231
2005-01-13

High voltage bobbin of fly-back transformer

#64
20050002206
2005-01-06

Method and apparatus for substantially reducing electrical displacement current flow between input and output windings of an energy transfer element