JPS57193007A - Magnetic core - Google Patents

Magnetic core

Info

Publication number
JPS57193007A
JPS57193007A JP17030181A JP17030181A JPS57193007A JP S57193007 A JPS57193007 A JP S57193007A JP 17030181 A JP17030181 A JP 17030181A JP 17030181 A JP17030181 A JP 17030181A JP S57193007 A JPS57193007 A JP S57193007A
Authority
JP
Japan
Prior art keywords
magnetic
gap
magnetic core
magnetic substance
current
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
JP17030181A
Other languages
Japanese (ja)
Inventor
Yoshiaki Akachi
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP17030181A priority Critical patent/JPS57193007A/en
Publication of JPS57193007A publication Critical patent/JPS57193007A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps

Landscapes

  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

PURPOSE:To control an unusual increase in output voltage or frequency at the time of light load when a magnetic core is used as the magnetic core for coil superimposing direct current by arranging a magnetic substance around the gap in the magnetic core haing the gap at a part of the magnetic core. CONSTITUTION:Two E shaped cores 3, 4 are combined and air gap Ga is formed between both the cores 3a-4a and a magnetic substance 5 is arranged around the air gap Ga. In this composition, when a choke coil or the like is composed by using the magnetic core, resultant magnetic permeability at the coupling part of the gap Ga and a magnetic substance 5 is decided by depending on the permeability of the magnetic substance 5 at a low current region where the magnetic substance 5 does not magnetically saturate and the value becomes extremely high. Therefore, inductance at a low current region of discontinuous choke current becomes extremely high and an increase in output voltage and frequency is controlled. Meanwhile, when a choke current reaches a fixed value or over, the magnetic substance 5 magnetically saturates. Therefore, flat current-inductance characteristics similar to the case of gap Ga only is obtained.
JP17030181A 1981-10-23 1981-10-23 Magnetic core Pending JPS57193007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17030181A JPS57193007A (en) 1981-10-23 1981-10-23 Magnetic core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17030181A JPS57193007A (en) 1981-10-23 1981-10-23 Magnetic core

Publications (1)

Publication Number Publication Date
JPS57193007A true JPS57193007A (en) 1982-11-27

Family

ID=15902423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17030181A Pending JPS57193007A (en) 1981-10-23 1981-10-23 Magnetic core

Country Status (1)

Country Link
JP (1) JPS57193007A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
CN110176347A (en) * 2019-06-21 2019-08-27 上海理工大学 A kind of magnet controlled reactor

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7849586B2 (en) 2003-07-16 2010-12-14 Marvell World Trade Ltd. Method of making a 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
US7218197B2 (en) 2003-07-16 2007-05-15 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
US7489219B2 (en) 2003-07-16 2009-02-10 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
US7023313B2 (en) 2003-07-16 2006-04-04 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US7868725B2 (en) 2003-07-16 2011-01-11 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US7987580B2 (en) 2003-07-16 2011-08-02 Marvell World Trade Ltd. Method of fabricating conductor crossover structure for power inductor
US7882614B2 (en) 2003-07-16 2011-02-08 Marvell World Trade Ltd. Method for providing a power inductor
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
US8299763B2 (en) 2003-08-21 2012-10-30 Marvell World Trade Ltd. Digital low dropout regulator
CN110176347A (en) * 2019-06-21 2019-08-27 上海理工大学 A kind of magnet controlled reactor

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