GB1319153A - Laminated ferrite sheet memory - Google Patents

Laminated ferrite sheet memory

Info

Publication number
GB1319153A
GB1319153A GB4993870A GB4993870A GB1319153A GB 1319153 A GB1319153 A GB 1319153A GB 4993870 A GB4993870 A GB 4993870A GB 4993870 A GB4993870 A GB 4993870A GB 1319153 A GB1319153 A GB 1319153A
Authority
GB
United Kingdom
Prior art keywords
tunnels
sections
oct
magnetic storage
flux path
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
GB4993870A
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.)
FDK Corp
Original Assignee
FDK 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 FDK Corp filed Critical FDK Corp
Publication of GB1319153A publication Critical patent/GB1319153A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11C11/06085—Multi-aperture structures or multi-magnetic closed circuits, each aperture storing a "bit", realised by rods, plates, grids, waffle-irons,(i.e. grooved plates) or similar devices

Landscapes

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

Abstract

1319153 Magnetic storage devices FUJI DENKI KAGAKU KK 21 Oct 1970 [27 Oct 1969] 49938/70 Heading H3B A magnetic storage device comprises a laminated ferrite body having two orthogonal sets of parallel tunnels containing removable drive conductors, the tunnels each having a flat face of width l and having a height h such that h #0À5l. Fig. 2b shows two orthogonal tunnels 5, 6 whose cross-sections are a segment of a circle. The requirement that h # 0À5l produces an optimum ratio of the length of the flux path around the crossing point of the tunnels, L 1 , to the distance around one tunnel, L 2 . This optimum ratio of L 2 : L 1 , which is about 0À68, reduces back voltages, speeds switching, and reduces output waveform distortion. The device may be made by pressing wires into two green ferrite sheets and laminating the sheets together. Suitable tunnel cross-sections are rectangular, triangular, segmental and trapezoidal; flux path lengths for these sections are given, Fig. 5 (not shown).
GB4993870A 1969-10-27 1970-10-21 Laminated ferrite sheet memory Expired GB1319153A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8620669A JPS5028139B1 (en) 1969-10-27 1969-10-27

Publications (1)

Publication Number Publication Date
GB1319153A true GB1319153A (en) 1973-06-06

Family

ID=13880284

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4993870A Expired GB1319153A (en) 1969-10-27 1970-10-21 Laminated ferrite sheet memory

Country Status (4)

Country Link
JP (1) JPS5028139B1 (en)
CA (1) CA919815A (en)
DE (1) DE2052711A1 (en)
GB (1) GB1319153A (en)

Also Published As

Publication number Publication date
CA919815A (en) 1973-01-23
DE2052711A1 (en) 1971-05-13
JPS5028139B1 (en) 1975-09-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee