Patents-Review.com
ClassID:

201742 ⎘

H01F30/02 - CPC Classification

Classification description:

Fixed transformers not covered by group Auto-transformers

Recent Application in this class:
#1
20260121416
2026-04-30

HVDC TRANSFORMER CONFIGURATION FOR SPLIT PCCs

 #2
20260056564
2026-02-26

IOT-BASED AUTOMATED VOLTAGE CONTROLLER SYSTEM FOR MOTOR OPERATED THREE-PHASE AUTOTRANSFORMER

 #3
20250202353
2025-06-19

POWER CONVERTER WITH MULTI-TAPPED AUTOTRANSFORMER

 #4
20250047255
2025-02-06

NEW BROADBAND BALUN STRUCTURES AND APPLICATIONS THEREOF

 #5
20240274350
2024-08-15

TRANSFORMER AND METHOD OF GENERATING MULTIPLE MULTIPHASE OUTPUT SIGNALS

 #6
20240120148
2024-04-11

Integrated auto-transformer based zero or 180 degrees phase shifter

 #7
20230395313
2023-12-07

HEAT TRANSFER FROM TRANSFORMER WINDINGS

 #8
20230274877
2023-08-31

Autotransformer, autotransformer-rectifier unit and method for connecting a piece of electrical equipment to a three-phase grid by means of an autotransformer-rectifier unit

 #9
20220399162
2022-12-15

PHASE-SHIFT AUTOTRANSFORMER, MULTI-PULSE RECTIFIER SYSTEMS AND FAST CHARGING

 #10
20220208444
2022-06-30

Asymmetric 24-pulse autotransformer rectifier unit for turboelectric propulsion, and associated systems and methods

 #11
20210319949
2021-10-14

Autotransformer rectifier unit system

 #12
20210319945
2021-10-14

AUTOTRANSFORMER RECTIFIER UNIT WINDING ARRANGEMENT

 #13
20210304958
2021-09-30

Phase-shift autotransformer, multi-pulse rectifier systems and fast charging

 #14
20210218340
2021-07-15

Power system architecture with reduced common mode voltage

 #15
20210098188
2021-04-01

Ten-phase auto transformer rectifier unit

 #16
20200343040
2020-10-29

Power supply multi-tapped autotransformer

 #17
20200335271
2020-10-22

Transformer and method of generating multiple multiphase output signals

 #18
20200287475
2020-09-10

Power converters, power distribution systems and methods of converting power

 #19
20200244179
2020-07-30

Power converters, power distribution systems and methods of converting power

 #20
20200052574
2020-02-13

72-pulse AC-DC converter for power quality improvement

 #21
20190334489
2019-10-31

Power amplifier

 #22
20190035545
2019-01-31

Voltage step-up autotransformer, and AC-to-DC converter comprising such an autotransformer

 #23
20190013140
2019-01-10

Winding module, hybrid transformer, module and circuit for DC-DC power conversion

 #24
20180358161
2018-12-13

Toroidal hand-held autotransformer assembly

 #25
20180337612
2018-11-22

AC/DC CONVERTER OF NESTED STRUCTURE

 #26
20180145444
2018-05-24

X-ray tube high voltage connector with integrated heating transformer

 #27
20180006626
2018-01-04

Impedance matching circuit for radio-frequency amplifier

 #28
20170303375
2017-10-19

AN ELECTRIC FENCE ENERGISER SYSTEM AND METHODS OF OPERATION AND COMPONENTS THEREOF

 #29
20170250023
2017-08-31

Autotransformer rectifier unit

 #30
20170148566
2017-05-25

Symmetrical step-up and step-down autotransformer delta topology

 #31
20170141696
2017-05-18

T-CONNECTED AUTOTRANSFORMER BASED CONVERTER PROVIDING REDUCED RATING FOR RETROFIT APPLICATIONS

 #32
20160294346
2016-10-06

Printed circuit board assembly for filtering noise of network signal transmission

 #33
20160276099
2016-09-22

Multi-phase autotransformer

 #34
20160257412
2016-09-08

Cooling assembly for an aircraft provided with a fan

 #35
20160012960
2016-01-14

Symmetrical step-up and step-down autotransformer delta topology

 #36
20150287526
2015-10-08

Single-phase electric furnace transformer

 #37
20150244054
2015-08-27

Directional coupler

 #38
20140320205
2014-10-30

Autotransformer-based impedance matching circuits and methods for radio-frequency applications

 #39
20140266557
2014-09-18

Inherently Balanced Phase Shifting AutoTransformer

 #40
20140265955
2014-09-18

Autotransformer system reducing total harmonic distortion

 #41
20140119073
2014-05-01

Composite AC-to-DC power converter with boosting capabilities

 #42
20130272040
2013-10-17

Dual-input 18-pulse autotransformer rectifier unit for an aircraft AC-DC converter

 #43
20130187741
2013-07-25

AUTO-TRANSFORMER RECTIFIER UNIT CORE

 #44
20130181643
2013-07-18

Power converter with asymmetric phase shift autotransformer for alternating current (AC) motor

 #45
20130170257
2013-07-04

COMPOSITE AC-TO-DC POWER CONVERTER USING WYE ARCHITECTURE

 #46
20130128634
2013-05-23

COMPOSITE AC TO DC CONVERTER WITH BOOSTING CAPABILITIES

 #47
20130088017
2013-04-11

Generator

 #48
20130083574
2013-04-04

Dual-input nine-phase autotransformer for electric aircraft AC-DC converter

 #49
20120293142
2012-11-22

PHASE-CONTROLLED AC VOLTAGE STABILIZING CIRCUIT

 #50
20120092908
2012-04-19

Multi-level parallel power converters

 #51
20120013428
2012-01-19

STEP-DOWN AUTOTRANSFORMER FOR A POWER DISTRIBUTION SYSTEM WITH NON-LINEAR LOADS

 #52
20110148556
2011-06-23

POWER QUALITY IMPROVEMENT DEVICE AND POWER SUPPLY SYSTEM

 #53
20110121796
2011-05-26

Voltage regulation system

 #54
20110051480
2011-03-03

20º PHASE-SHIFTING AUTOTRANSFORMER

 #55
20100219923
2010-09-02

Zigzag autotransformer apparatus and methods

 #56
20100148900
2010-06-17

Symmetrical auto transformer wye topologies

 #57
20100148899
2010-06-17

Symmetrical auto transformer delta topologies

 #58
20100148898
2010-06-17

Zigzag autotransformer apparatus and methods

 #59
20100117776
2010-05-13

Cooling system for a dry-type air-core reactor

 #60
20100001824
2010-01-07

Autotransformer using printed wireboard

 #61
20090034305
2009-02-05

Power conversion device and power conversion system

 #62
20080278967
2008-11-13

AC to DC Power converter for aerospace applications

 #63
20080186749
2008-08-07

AC/DC converter for aeronautics

 #64
20080130320
2008-06-05

40° phase-shifting autotransformer

 #65
20080088466
2008-04-17

System and method to zero-sequence verify ground return path integrity by comparing measured zero-sequence current in an autotransformer with a second zero-sequence current source

 #66
20070103125
2007-05-10

Reduced rating T-connected autotransformer for converting three phase AC voltages to nine/six phase shifted AC voltages

 #67
20060055248
2006-03-16

Apparatus and method for control of high intensity discharge lighting

 #68
20050248324
2005-11-10

Power supply for measuring the line impedance of underground cable

 #69
20050077887
2005-04-14

Rectification system for improving power quality of electrical power systems

 #70
20050035838
2005-02-17

Auto-transformer for use with multiple pulse rectifiers