GB1221853A - Magnetic transducers - Google Patents

Magnetic transducers

Info

Publication number
GB1221853A
GB1221853A GB06879/68A GB1687968A GB1221853A GB 1221853 A GB1221853 A GB 1221853A GB 06879/68 A GB06879/68 A GB 06879/68A GB 1687968 A GB1687968 A GB 1687968A GB 1221853 A GB1221853 A GB 1221853A
Authority
GB
United Kingdom
Prior art keywords
body sections
sections
flat tip
tip faces
magnetic
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
GB06879/68A
Inventor
Leonard E Kronfeld
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.)
NORTRONICS CO
Original Assignee
NORTRONICS CO
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 NORTRONICS CO filed Critical NORTRONICS CO
Publication of GB1221853A publication Critical patent/GB1221853A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
    • G11B5/295—Manufacture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R11/12—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Magnetic Heads (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

1,221,853. Magnetic heads. NORTRONICS CO. Inc. 8 April, 1968, No. 16879/68. Heading G5R. A magnetic transducer comprises a plurality of body sections containing respective core pieces having flat tip faces arranged to be held together by first and second U-shaped spring clamps. As shown, two body sections 11, 12 containing core halves 14a, 15a and 14b, 15b are clamped together by springs 20 located by shoulders 40-43. The sections 11, 12 may be aligned and secured by adhesive then the assembly potted in a screening can. A terminal board 35 is located and held by lugs 34. In the case of three or more body sections, the Specification states that the adjacent flat tip faces may each define magnetic flux gaps.
GB06879/68A 1966-09-21 1968-04-08 Magnetic transducers Expired GB1221853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58098166A 1966-09-21 1966-09-21

Publications (1)

Publication Number Publication Date
GB1221853A true GB1221853A (en) 1971-02-10

Family

ID=24323408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB06879/68A Expired GB1221853A (en) 1966-09-21 1968-04-08 Magnetic transducers

Country Status (5)

Country Link
US (1) US3484562A (en)
BE (1) BE735030A (en)
CH (1) CH501292A (en)
DE (1) DE1763241C3 (en)
GB (1) GB1221853A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156138A (en) * 1983-12-02 1985-10-02 Alps Electric Co Ltd Magnetic head

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864752A (en) * 1973-12-10 1975-02-04 Shugart Associates Inc Magnetic head assembly having a slotted body portion of elastic material for clamping a transducer and method of manufacture therefor
US4152742A (en) * 1977-10-31 1979-05-01 Nortronics Company, Inc. Back bar retainer for magnetic head
DE3615529A1 (en) * 1986-05-07 1987-11-12 Bosch Gmbh Robert IGNITION COIL FOR IGNITION SYSTEMS FOR INTERNAL COMBUSTION ENGINES
US7280026B2 (en) 2002-04-18 2007-10-09 Coldwatt, Inc. Extended E matrix integrated magnetics (MIM) core
US7876191B2 (en) 2005-02-23 2011-01-25 Flextronics International Usa, Inc. Power converter employing a tapped inductor and integrated magnetics and method of operating the same
US7675759B2 (en) 2006-12-01 2010-03-09 Flextronics International Usa, Inc. Power system with power converters having an adaptive controller
US9197132B2 (en) 2006-12-01 2015-11-24 Flextronics International Usa, Inc. Power converter with an adaptive controller and method of operating the same
US7468649B2 (en) 2007-03-14 2008-12-23 Flextronics International Usa, Inc. Isolated power converter
US7906941B2 (en) 2007-06-19 2011-03-15 Flextronics International Usa, Inc. System and method for estimating input power for a power processing circuit
US8488355B2 (en) 2008-11-14 2013-07-16 Power Systems Technologies, Ltd. Driver for a synchronous rectifier and power converter employing the same
CN102342007B (en) 2009-01-19 2015-01-07 伟创力国际美国公司 Controller for a power converter
CN102342008B (en) 2009-01-19 2016-08-03 伟创力国际美国公司 Controller for power converter
CN102356438B (en) 2009-03-31 2014-08-27 伟创力国际美国公司 Magnetic device formed with u-shaped core pieces and power converter employing the same
US8643222B2 (en) 2009-06-17 2014-02-04 Power Systems Technologies Ltd Power adapter employing a power reducer
US9077248B2 (en) 2009-06-17 2015-07-07 Power Systems Technologies Ltd Start-up circuit for a power adapter
US8514593B2 (en) 2009-06-17 2013-08-20 Power Systems Technologies, Ltd. Power converter employing a variable switching frequency and a magnetic device with a non-uniform gap
US8638578B2 (en) 2009-08-14 2014-01-28 Power System Technologies, Ltd. Power converter including a charge pump employable in a power adapter
US8976549B2 (en) 2009-12-03 2015-03-10 Power Systems Technologies, Ltd. Startup circuit including first and second Schmitt triggers and power converter employing the same
US8520420B2 (en) 2009-12-18 2013-08-27 Power Systems Technologies, Ltd. Controller for modifying dead time between switches in a power converter
US9246391B2 (en) 2010-01-22 2016-01-26 Power Systems Technologies Ltd. Controller for providing a corrected signal to a sensed peak current through a circuit element of a power converter
US8787043B2 (en) 2010-01-22 2014-07-22 Power Systems Technologies, Ltd. Controller for a power converter and method of operating the same
WO2011116225A1 (en) 2010-03-17 2011-09-22 Power Systems Technologies, Ltd. Control system for a power converter and method of operating the same
US8792257B2 (en) 2011-03-25 2014-07-29 Power Systems Technologies, Ltd. Power converter with reduced power dissipation
US8792256B2 (en) 2012-01-27 2014-07-29 Power Systems Technologies Ltd. Controller for a switch and method of operating the same
US9190898B2 (en) 2012-07-06 2015-11-17 Power Systems Technologies, Ltd Controller for a power converter and method of operating the same
US9379629B2 (en) 2012-07-16 2016-06-28 Power Systems Technologies, Ltd. Magnetic device and power converter employing the same
US9106130B2 (en) 2012-07-16 2015-08-11 Power Systems Technologies, Inc. Magnetic device and power converter employing the same
US9214264B2 (en) 2012-07-16 2015-12-15 Power Systems Technologies, Ltd. Magnetic device and power converter employing the same
US9099232B2 (en) 2012-07-16 2015-08-04 Power Systems Technologies Ltd. Magnetic device and power converter employing the same
US9240712B2 (en) 2012-12-13 2016-01-19 Power Systems Technologies Ltd. Controller including a common current-sense device for power switches of a power converter
US9300206B2 (en) 2013-11-15 2016-03-29 Power Systems Technologies Ltd. Method for estimating power of a power converter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB794978A (en) * 1955-01-13 1958-05-14 Emi Ltd Improvements in or relating to magnetic transducing heads for use in magnetic recording or reproducing apparatus
US2920149A (en) * 1957-11-21 1960-01-05 Sonotone Corp Magnetic record transducing heads
NL131637C (en) * 1958-01-13
GB882042A (en) * 1959-09-03 1961-11-08 Philips Electrical Ind Ltd Improvements in or relating to core holders for use in multitrack erasing heads
US3156919A (en) * 1960-12-30 1964-11-10 Ibm Electromagnetic transducer head
US3211843A (en) * 1962-03-29 1965-10-12 Nortronics Co Multi-channel electromagnetic head structures
GB1036001A (en) * 1963-01-07 1966-07-13 Rank Bush Murphy Ltd Electromagnetic transducer head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156138A (en) * 1983-12-02 1985-10-02 Alps Electric Co Ltd Magnetic head

Also Published As

Publication number Publication date
US3484562A (en) 1969-12-16
DE1763241A1 (en) 1972-04-20
CH501292A (en) 1970-12-31
DE1763241C3 (en) 1974-05-16
BE735030A (en) 1969-12-01
DE1763241B2 (en) 1973-10-04

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