GB849264A - Bistable state magnetic core device - Google Patents

Bistable state magnetic core device

Info

Publication number
GB849264A
GB849264A GB37994/56A GB3799456A GB849264A GB 849264 A GB849264 A GB 849264A GB 37994/56 A GB37994/56 A GB 37994/56A GB 3799456 A GB3799456 A GB 3799456A GB 849264 A GB849264 A GB 849264A
Authority
GB
United Kingdom
Prior art keywords
conductors
read
circuits
array
conductor
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
GB37994/56A
Inventor
Douglas Cary Wendell
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.)
Unisys Corp
Original Assignee
Burroughs 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
Priority claimed from US533987A external-priority patent/US3005977A/en
Application filed by Burroughs Corp filed Critical Burroughs Corp
Publication of GB849264A publication Critical patent/GB849264A/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
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49069—Data storage inductor or core

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

849,264. Circuits employing bi-stable magnetic elements. BURROUGHS CORPORATION. Dec. 12, 1956, No. 37994/56. Class 40 (9). [Also in Group XXXV] A magnetic storage element comprises a plurality of conductors 11, 12, 13, linking a core 16 formed by winding a strip of magnetic material with a square hysteresis loop around the conductors. The conductors may be ordinary enamel-coated or plastic-coated insulated wire, or may be platinum insulated with vitreous material to permit the magnetic strip to be annealed after winding. The magnetic strip may be iron containing 5% silicon or Permalloy. Storage arrays.-A storage array is formed by a plurality of elements connected between terminal areas 42, 43, 44, etched on an insulating base 41 by printed circuit technique. As shown in Fig. 4, a three-by-three array has column read-in conductors 12, row read-in conductors 13, and a read-out conductor 11. Each conductor may be connected to adjacent terminal areas, or a row or column may be threaded by a one long conductor as for example the conductor 12, 45, 46, 51 in the first column. Alternatively the areas 42, 43, 44 may be replaced by soldering lugs. In a 16 x 16 array the rows are divided into two sets of eight, and the readout conductors instead of being diagonally connected are arranged vertically alongside the column read in conductors, and connections are made to minimize noise current. In manufacture a number of cores are wound at intervals along parallel arranged conductors and cuts are made where necessary for connections (Fig. 5). Fig. 4 shows in block diagram form circuit arrangements for use with the array, wherein an address selecting device 76 determines the effective positions of switches 63, 71 in the switching circuits 61, 68 and the timing read-in circuits 77 control pulses from pulsing circuits 62, 69 to the selected core. Read-out gating circuits 83 and utilization device 82 are included and gated open through conductors 83 by the timing unit 77 during a read-out period, and read-out pulses are supplied from pulsing circuits, 62, 69. Conventional circuit arrangements (not shown) may be provided to restore a switched core and so make the reading out non-destructive.
GB37994/56A 1955-09-13 1956-12-12 Bistable state magnetic core device Expired GB849264A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US533987A US3005977A (en) 1955-09-13 1955-09-13 Bistable state magnetic elements and coupled circuitry
US146629A US3210828A (en) 1955-09-13 1961-10-20 Fabricating electrical circuit matrix including magnetic elements

Publications (1)

Publication Number Publication Date
GB849264A true GB849264A (en) 1960-09-21

Family

ID=26844109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37994/56A Expired GB849264A (en) 1955-09-13 1956-12-12 Bistable state magnetic core device

Country Status (2)

Country Link
US (1) US3210828A (en)
GB (1) GB849264A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307245A (en) * 1963-07-02 1967-03-07 Univ Florida Atlantic Method of making a memory matrix

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2041147A (en) * 1931-09-25 1936-05-19 Siemens Ag Signaling system
US2457806A (en) * 1946-06-11 1949-01-04 Eugene R Crippa Inductance coil
NL198419A (en) * 1954-09-13
US3058097A (en) * 1955-03-01 1962-10-09 Schlumberger Well Surv Corp Information handling system
US2901736A (en) * 1955-08-23 1959-08-25 Steatite Res Corp Printed circuit for array of toroidal cores
NL209920A (en) * 1955-08-26

Also Published As

Publication number Publication date
US3210828A (en) 1965-10-12

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