GB884431A - Improvements in or relating to magnetic devices - Google Patents

Improvements in or relating to magnetic devices

Info

Publication number
GB884431A
GB884431A GB20217/58A GB2021758A GB884431A GB 884431 A GB884431 A GB 884431A GB 20217/58 A GB20217/58 A GB 20217/58A GB 2021758 A GB2021758 A GB 2021758A GB 884431 A GB884431 A GB 884431A
Authority
GB
United Kingdom
Prior art keywords
pulse
magnetization
winding
pulses
windings
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
GB20217/58A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB884431A publication Critical patent/GB884431A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/45—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/06—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element
    • G11C11/06007—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element using a single aperture or single magnetic closed circuit
    • G11C11/06014—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element using a single aperture or single magnetic closed circuit using one such element per bit
    • G11C11/0605—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element using a single aperture or single magnetic closed circuit using one such element per bit with non-destructive read-out
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/80—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Measuring Magnetic Variables (AREA)
  • Discharge By Other Means (AREA)

Abstract

884,431. Magnetic storage devices. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 24, 1958 [June 24, 1957], No. 20217/58. Class 38 (2). [Also in Group XXXIX] A magnetic storage device comprises a crystal K (Fig. 1) of ferroxplana material (such as Ba 2 M e F 12 O 22 where Me comprises one or more divalent metals including cobalt) having three directions of easy magnetization linked with windings 1, 2 and 3 current in which can produce remanent states of magnetization in directions I, II and III respectively. The crystal K may be disc shaped and may be enclosed within a ferrite ring S or provided with a ring 15 (Fig. 5) of soft magnetic material having slots 16, 17, 18 for windings 19, 20, 21. In non- destructive reading-out of the direction of remanent magnetization application of a weak pulse to winding 1 produces equal low pulses in windings 2 and 3 if the direction of remanent magnetization is I, a higher pulse in 3 than in 2 if the direction is II and a higher pulse in 2 than in 3 if the direction is III. Windings 2 and 3 can be replaced by a single winding arranged at right angles to winding 1. Reading out can be done by a strong pulse so that the magnetization assumes a direction determined by the winding carrying the pulse. The device may be used as an adding element by arranging for the direction of remanent magnetization to be reversed only by pulses in two windings jointly. The device can be used for a coincidence circuit, pulses in windings 2 and 3 producing a greater pulse in winding 1 when they coincide. Two such devices 7 and 8 may be used in a pulsedifferentiating circuit as shown in Fig. 4 in which 10 is the source of the pulses to be tested and 9 is a clock-pulse generator. While pulses in 9 and 10 coincide the magnetization direction in device 7 will remain at II and the magnetization direction in device 8 will remain at - III<SP>1</SP>, no pulse being produced in output winding I<SP>1</SP>. If a pulse is then received only from 9 the direction of magnetization of 7 is shifted to - III. The next coincidence of pulses then produces a pulse in winding 2 which results in the production of a pulse in output winding 1<SP>1</SP>. On subsequent coincidence of pulses magnetization of device 8 returns to - III<SP>1</SP> and an opposite pulse is produced in output winding 1<SP>1</SP>.
GB20217/58A 1957-06-24 1958-06-24 Improvements in or relating to magnetic devices Expired GB884431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE558662 1957-06-24

Publications (1)

Publication Number Publication Date
GB884431A true GB884431A (en) 1961-12-13

Family

ID=3845006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20217/58A Expired GB884431A (en) 1957-06-24 1958-06-24 Improvements in or relating to magnetic devices

Country Status (5)

Country Link
US (1) US3123807A (en)
BE (1) BE558662A (en)
DE (1) DE1067863B (en)
FR (1) FR1197397A (en)
GB (1) GB884431A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160966A (en) * 1977-09-06 1979-07-10 Inductotherm Corp. Stabilized reactor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712572A (en) * 1947-03-27 1955-07-05 Int Electronics Co Superimposed plural recording
US2736708A (en) * 1951-06-08 1956-02-28 Henry L Crowley & Company Inc Magnetic compositions
US2692978A (en) * 1951-10-05 1954-10-26 Bell Telephone Labor Inc Ferrite inductor
US2783207A (en) * 1952-05-22 1957-02-26 Electro Chimie Metal Preparation of powders suitable for the manufacture of permanent magnets
US2778803A (en) * 1953-02-06 1957-01-22 Aerovox Corp Magnetically hard materials
US2781503A (en) * 1953-04-29 1957-02-12 American Mach & Foundry Magnetic memory circuits employing biased magnetic binary cores
US2906979A (en) * 1954-10-01 1959-09-29 Bell Telephone Labor Inc Method of making single crystal cores of a ferrite including cobalt and cores so made
US2811652A (en) * 1955-03-17 1957-10-29 Sperry Rand Corp Pulse type transverse magnetic amplifier
ES230262A1 (en) * 1955-08-10 1957-03-01 Philips Nv Ferromagnetic material
US2938183A (en) * 1956-11-09 1960-05-24 Bell Telephone Labor Inc Single crystal inductor core of magnetizable garnet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160966A (en) * 1977-09-06 1979-07-10 Inductotherm Corp. Stabilized reactor

Also Published As

Publication number Publication date
FR1197397A (en) 1959-11-30
US3123807A (en) 1964-03-03
DE1067863B (en) 1959-10-29
BE558662A (en)

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