EP3736840A4 - Inductor assembly and speaker - Google Patents

Inductor assembly and speaker Download PDF

Info

Publication number: EP3736840A4
Authority: EP; European Patent Office
Prior art keywords: speaker; inductor assembly; inductor; assembly
Prior art date: 2018-01-24
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP19743230.5A

Other languages

German (de)

French (fr)

Other versions

EP3736840B1 (en

EP3736840C0 (en

EP3736840A1 (en

Inventor

Jingran WANG

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee

Individual

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2018-01-24

Filing date

2019-01-23

Publication date

2021-03-10

2019-01-23 Application filed by Individual filed Critical Individual

2020-11-11 Publication of EP3736840A1 publication Critical patent/EP3736840A1/en

2021-03-10 Publication of EP3736840A4 publication Critical patent/EP3736840A4/en

2023-08-23 Application granted granted Critical

2023-08-23 Publication of EP3736840B1 publication Critical patent/EP3736840B1/en

2023-08-23 Publication of EP3736840C0 publication Critical patent/EP3736840C0/en

Status Active legal-status Critical Current

2039-01-23 Anticipated expiration legal-status Critical

Links

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/12—Variable inductances or transformers of the signal type discontinuously variable, e.g. tapped
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils

EP19743230.5A 2018-01-24 2019-01-23 Inductor assembly and speaker Active EP3736840B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CN201810067576.8A CN108447665A (en)	2018-01-24	2018-01-24	A kind of controllable impedance device assembly and speaker
PCT/CN2019/072866 WO2019144887A1 (en)	2018-01-24	2019-01-23	Inductor assembly and speaker

Publications (4)

Publication Number	Publication Date
EP3736840A1 EP3736840A1 (en)	2020-11-11
EP3736840A4 true EP3736840A4 (en)	2021-03-10
EP3736840B1 EP3736840B1 (en)	2023-08-23
EP3736840C0 EP3736840C0 (en)	2023-08-23

Family

ID=63191298

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19743230.5A Active EP3736840B1 (en)	2018-01-24	2019-01-23	Inductor assembly and speaker

Country Status (3)

Country	Link
EP (1)	EP3736840B1 (en)
CN (2)	CN108447665A (en)
WO (1)	WO2019144887A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN108447665A (en) *	2018-01-24	2018-08-24	北京金科华业测控技术有限公司	A kind of controllable impedance device assembly and speaker
CN110379611A (en) *	2019-06-26	2019-10-25	东南大学	A kind of DC current control inductance tuner with permanent magnet bias
CN112350204A (en) *	2019-11-20	2021-02-09	邹虚	Movable transformer substation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4207530A (en) *	1977-09-12	1980-06-10	Motorola, Inc.	Electrically tunable inductor and method
WO1999028934A2 (en) *	1997-11-28	1999-06-10	Asea Brown Boveri, Ab	Flux control for high power static electromagnetic devices
CN2455028Y (en) *	2000-11-29	2001-10-17	梁耀辉	High-fidelity voice
JP2004140165A (en) *	2002-10-17	2004-05-13	Matsushita Electric Ind Co Ltd	Variable inductor
CN1790565A (en) *	2005-12-23	2006-06-21	清华大学	Non-contact controllable reactor
RU2348998C1 (en) *	2008-01-31	2009-03-10	Александр Васильевич Григорьев	Controllable transformer-type reactor
CN202309082U (en) *	2011-09-28	2012-07-04	武汉伏特克电气工程有限公司	Automatic stepless voltage regulating type reactive power compensator

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH05182837A (en) *	1992-01-07	1993-07-23	Matsushita Electric Ind Co Ltd	Variable inductor
CN201319287Y (en) *	2008-12-03	2009-09-30	上海铁路通信工厂	Heavy-current hollow coil
US20110260819A1 (en) *	2010-04-26	2011-10-27	Taiwan Semiconductor Manufacturing Co., Ltd.	Continuously tunable inductor with variable resistors
CN102682955B (en) *	2012-05-10	2016-09-14	杭州金果科技有限公司	A kind of controllable impedance
CN202759249U (en) *	2012-08-23	2013-02-27	大连第二互感器集团有限公司	Magnetic control parallel reactor
CN203311972U (en) *	2013-07-11	2013-11-27	哈尔滨理工大学	Direct-current magnetic-controlled adjustable reactor with air gap
CN204992589U (en) *	2015-10-10	2016-01-20	张家港市博特圣电气科技有限公司	Three -phase AC intelligent control circuit
CN107509134A (en) *	2017-10-10	2017-12-22	李龙根	A kind of earphone second order passive frequency divider
CN108447665A (en) *	2018-01-24	2018-08-24	北京金科华业测控技术有限公司	A kind of controllable impedance device assembly and speaker

2018
- 2018-01-24 CN CN201810067576.8A patent/CN108447665A/en active Pending
2019
- 2019-01-23 CN CN201980021874.6A patent/CN111954913A/en active Pending
- 2019-01-23 EP EP19743230.5A patent/EP3736840B1/en active Active
- 2019-01-23 WO PCT/CN2019/072866 patent/WO2019144887A1/en unknown

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4207530A (en) *	1977-09-12	1980-06-10	Motorola, Inc.	Electrically tunable inductor and method
WO1999028934A2 (en) *	1997-11-28	1999-06-10	Asea Brown Boveri, Ab	Flux control for high power static electromagnetic devices
CN2455028Y (en) *	2000-11-29	2001-10-17	梁耀辉	High-fidelity voice
JP2004140165A (en) *	2002-10-17	2004-05-13	Matsushita Electric Ind Co Ltd	Variable inductor
CN1790565A (en) *	2005-12-23	2006-06-21	清华大学	Non-contact controllable reactor
RU2348998C1 (en) *	2008-01-31	2009-03-10	Александр Васильевич Григорьев	Controllable transformer-type reactor
CN202309082U (en) *	2011-09-28	2012-07-04	武汉伏特克电气工程有限公司	Automatic stepless voltage regulating type reactive power compensator

Also Published As

Publication number	Publication date
CN111954913A (en)	2020-11-17
CN108447665A (en)	2018-08-24
EP3736840B1 (en)	2023-08-23
EP3736840C0 (en)	2023-08-23
WO2019144887A1 (en)	2019-08-01
EP3736840A1 (en)	2020-11-11

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