JPH02251107A - Choke coil - Google Patents

Choke coil

Info

Publication number
JPH02251107A
JPH02251107A JP7361689A JP7361689A JPH02251107A JP H02251107 A JPH02251107 A JP H02251107A JP 7361689 A JP7361689 A JP 7361689A JP 7361689 A JP7361689 A JP 7361689A JP H02251107 A JPH02251107 A JP H02251107A
Authority
JP
Japan
Prior art keywords
magnetic
permeability
core
choke coil
magnetic flux
Prior art date
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.)
Pending
Application number
JP7361689A
Other languages
Japanese (ja)
Inventor
Toru Harada
Original Assignee
Murata Mfg Co Ltd
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.)
Filing date
Publication date
Application filed by Murata Mfg Co Ltd filed Critical Murata Mfg Co Ltd
Priority to JP7361689A priority Critical patent/JPH02251107A/en
Publication of JPH02251107A publication Critical patent/JPH02251107A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a choke coil characterized by high saturation magnetomotive force, less magnetic flux leakage and high permeability by inserting a spacer which is formed with a magnetic material whose permeability is lower than that of a core material and whose saturation magnetic flux density is higher than that of the core material into a gap.
CONSTITUTION: In a choke coil A, a part of a toroidal core 1 which is formed with a high permeability magnetic material such as an amorphous material is cut out, and a gap 2 is provided. A spacer 3 comprising a magnetic material characterized by low permeability and high saturation magnetic flux density is inserted into the gas 2. A conductor wire 4 such as polyurethane coated copper wire and the like is wound around the core 1 many number of turns, and the coil is formed. When a large current is made to flow through the conductor wire 4 until the magnetic flux density in the core 1 is saturated, the choke coil having highly saturated magnetomotive force is obtained. As the gap 2, the magnetic material whose permeability is relatively low is used. In this way, the saturation magnetomotive force of the choke coil having the high permeability can be made high, and the leaking magnetic flux at the gap part is made less. Magnetic interference with surrounding electric parts can be suppressed.
COPYRIGHT: (C)1990,JPO&Japio
JP7361689A 1989-03-24 1989-03-24 Choke coil Pending JPH02251107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7361689A JPH02251107A (en) 1989-03-24 1989-03-24 Choke coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7361689A JPH02251107A (en) 1989-03-24 1989-03-24 Choke coil

Publications (1)

Publication Number Publication Date
JPH02251107A true JPH02251107A (en) 1990-10-08

Family

ID=13523443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7361689A Pending JPH02251107A (en) 1989-03-24 1989-03-24 Choke coil

Country Status (1)

Country Link
JP (1) JPH02251107A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6346336B1 (en) 1998-05-27 2002-02-12 Matsushita Electrical Industrial Co., Ltd. Soft magnetic film soft magnetic multilayer film method of manufacturing the same and magnetic device
EP1498915A1 (en) * 2003-07-16 2005-01-19 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US7023313B2 (en) 2003-07-16 2006-04-04 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US7218197B2 (en) 2003-07-16 2007-05-15 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
JP2008099713A (en) * 2006-10-17 2008-05-01 Nipro Corp Medical tube and medical device set
JP2008140838A (en) * 2006-11-30 2008-06-19 Matsushita Electric Ind Co Ltd Inductor component and electronic apparatus using the same
US7760525B2 (en) 2003-08-21 2010-07-20 Marvell World Trade Ltd. Voltage regulator
US7872454B2 (en) 2003-08-21 2011-01-18 Marvell World Trade Ltd. Digital low dropout regulator
JP2012253264A (en) * 2011-06-06 2012-12-20 Toyota Industries Corp Magnetic core
WO2015098579A1 (en) * 2013-12-25 2015-07-02 アイシン精機株式会社 Reactor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934610A (en) * 1982-08-20 1984-02-25 Nippon Kinzoku Kk Iron core
JPS6124211A (en) * 1984-07-13 1986-02-01 Hitachi Metals Ltd Magnetic core for polarized choke coil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934610A (en) * 1982-08-20 1984-02-25 Nippon Kinzoku Kk Iron core
JPS6124211A (en) * 1984-07-13 1986-02-01 Hitachi Metals Ltd Magnetic core for polarized choke coil

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6346336B1 (en) 1998-05-27 2002-02-12 Matsushita Electrical Industrial Co., Ltd. Soft magnetic film soft magnetic multilayer film method of manufacturing the same and magnetic device
US7868725B2 (en) 2003-07-16 2011-01-11 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
EP1498915A1 (en) * 2003-07-16 2005-01-19 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
JP2005039229A (en) * 2003-07-16 2005-02-10 Marvell World Trade Ltd Power inductor reduced in dc current saturation
US7023313B2 (en) 2003-07-16 2006-04-04 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US7307502B2 (en) 2003-07-16 2007-12-11 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US8028401B2 (en) 2003-07-16 2011-10-04 Marvell World Trade Ltd. Method of fabricating a conducting crossover structure for a power inductor
US7987580B2 (en) 2003-07-16 2011-08-02 Marvell World Trade Ltd. Method of fabricating conductor crossover structure for power inductor
US7489219B2 (en) 2003-07-16 2009-02-10 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US7882614B2 (en) 2003-07-16 2011-02-08 Marvell World Trade Ltd. Method for providing a power inductor
US7218197B2 (en) 2003-07-16 2007-05-15 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US7849586B2 (en) 2003-07-16 2010-12-14 Marvell World Trade Ltd. Method of making a power inductor with reduced DC current saturation
US7872454B2 (en) 2003-08-21 2011-01-18 Marvell World Trade Ltd. Digital low dropout regulator
US7760525B2 (en) 2003-08-21 2010-07-20 Marvell World Trade Ltd. Voltage regulator
JP2008099713A (en) * 2006-10-17 2008-05-01 Nipro Corp Medical tube and medical device set
JP2008140838A (en) * 2006-11-30 2008-06-19 Matsushita Electric Ind Co Ltd Inductor component and electronic apparatus using the same
JP2012253264A (en) * 2011-06-06 2012-12-20 Toyota Industries Corp Magnetic core
US9041500B2 (en) 2011-06-06 2015-05-26 Kabushiki Kaisha Toyota Jidoshokki Magnetic core
WO2015098579A1 (en) * 2013-12-25 2015-07-02 アイシン精機株式会社 Reactor
JP2015122456A (en) * 2013-12-25 2015-07-02 アイシン精機株式会社 Reactor

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