GB1341038A - Inductors - Google Patents

Inductors

Info

Publication number
GB1341038A
GB1341038A GB1341038DA GB1341038A GB 1341038 A GB1341038 A GB 1341038A GB 1341038D A GB1341038D A GB 1341038DA GB 1341038 A GB1341038 A GB 1341038A
Authority
GB
United Kingdom
Prior art keywords
laminμ
magnetic material
planes
thickness
air gap
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.)
Expired
Application number
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.)
Thorn Automation Ltd
Original Assignee
Thorn Automation 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 Thorn Automation Ltd filed Critical Thorn Automation Ltd
Publication of GB1341038A publication Critical patent/GB1341038A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/341—Preventing or reducing no-load losses or reactive currents

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

1341038 Inductors THORN AUTOMATION Ltd 19 April 1971 [8 May 1970] 22445/70 Heading HIT An inductor, having a core formed from laminµ of magnetic material which are electrically insulated from each other and having an air gap formed between two poles of the core, has the thickness of magnetic material reduced in the pole region in a direction transverse to the planes of the laminµ. This may be achieved by cutting successive outer laminae shorter (Fig. 5) or by cutting each alternate laminµ short (Fig. 8), such arrangements being said to reduce losses in the inductor generated by eddy currents produced near the air gap in the polepieces. The magnetic material may also be additionally reduced in thickness in the planes of the laminµ in the pole region to produce a curved profile (Fig. 7, not shown).
GB1341038D 1970-05-08 1971-04-19 Inductors Expired GB1341038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2244570 1970-05-08

Publications (1)

Publication Number Publication Date
GB1341038A true GB1341038A (en) 1973-12-19

Family

ID=10179474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1341038D Expired GB1341038A (en) 1970-05-08 1971-04-19 Inductors

Country Status (3)

Country Link
DE (1) DE2120287A1 (en)
FR (1) FR2088415A1 (en)
GB (1) GB1341038A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723099A1 (en) * 1977-05-21 1978-11-30 Blum Eisen & Metallind FINED IRON CORE FOR TRANSFORMERS, THROTTLE COILS OR THE LIKE.
US4728918A (en) * 1984-09-24 1988-03-01 Siemens Aktiengesellschaft Storage coil with air gap in core
US5210514A (en) * 1990-08-17 1993-05-11 Tdk Corporation Coil device
US5414401A (en) * 1992-02-20 1995-05-09 Martin Marietta Corporation High-frequency, low-profile inductor
DE102011083549A1 (en) * 2011-09-27 2013-03-28 Endress + Hauser Flowtec Ag Magnetic-inductive flowmeter
DE102011083548A1 (en) * 2011-09-27 2013-03-28 Endress + Hauser Flowtec Ag Coil system of a magnetic-inductive flowmeter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3839771A1 (en) * 1988-11-25 1990-05-31 Vogt Electronic Ag Switching-network transformer having only one core
AUPN495295A0 (en) * 1995-08-23 1995-09-14 Microsystem Controls Pty Ltd Apparatus for obtaining certain characteristics for an article

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723099A1 (en) * 1977-05-21 1978-11-30 Blum Eisen & Metallind FINED IRON CORE FOR TRANSFORMERS, THROTTLE COILS OR THE LIKE.
US4728918A (en) * 1984-09-24 1988-03-01 Siemens Aktiengesellschaft Storage coil with air gap in core
US5210514A (en) * 1990-08-17 1993-05-11 Tdk Corporation Coil device
US5414401A (en) * 1992-02-20 1995-05-09 Martin Marietta Corporation High-frequency, low-profile inductor
DE102011083549A1 (en) * 2011-09-27 2013-03-28 Endress + Hauser Flowtec Ag Magnetic-inductive flowmeter
DE102011083548A1 (en) * 2011-09-27 2013-03-28 Endress + Hauser Flowtec Ag Coil system of a magnetic-inductive flowmeter
US9200934B2 (en) 2011-09-27 2015-12-01 Endress + Hauser Flowtec Ag Coil system of a magneto inductive flow measuring device
US9360356B2 (en) 2011-09-27 2016-06-07 Endress + Hauser Flowtec Ag Magneto inductive flow measuring device having a coil core protruding out from the coil

Also Published As

Publication number Publication date
FR2088415A1 (en) 1972-01-07
DE2120287A1 (en) 1971-11-18

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years