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GB966903A - Demagnetising means - Google Patents

Demagnetising means

Info

Publication number
GB966903A
GB966903A GB3124859A GB3124859A GB966903A GB 966903 A GB966903 A GB 966903A GB 3124859 A GB3124859 A GB 3124859A GB 3124859 A GB3124859 A GB 3124859A GB 966903 A GB966903 A GB 966903A
Authority
GB
United Kingdom
Prior art keywords
switch
transformer
sept
demagnetizing
positions
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
GB3124859A
Inventor
Frank Cecil Connelly
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.)
SOLUS SCHALL Ltd
Original Assignee
SOLUS SCHALL 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 SOLUS SCHALL Ltd filed Critical SOLUS SCHALL Ltd
Priority to GB3124859A priority Critical patent/GB966903A/en
Publication of GB966903A publication Critical patent/GB966903A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/006—Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Induction Heating (AREA)

Abstract

966,903. Control systems for demagnetizing magnetic materials. SOLUS-SCHALL Ltd. Sept. 14, 1960 [Sept. 14, 1959], No. 31248/59. Heading H2H. Apparatus for demagnetizing magnetic materials provides for the gradual reduction of the excitation of the material by operation of a switch 17 which firstly, varies the transformation ratio of the transformer 12 by movement over the positions 1-5; secondly, inserts portions 14, 15 of an impedance in series with the transformer 12 on positions 6, 7 and finally in position 8 of the switch places a thermistor 16 in parallel with the transformer 12, the resistance of which falls as it heats. A plurality of ther- .mistors 16 are provided to allow adequate cooling time for the thermistors when successive demagnetizing operations are made, the selector switch 18 being associated with the switch 17 by a Geneva mechanism.
GB3124859A 1959-09-14 1959-09-14 Demagnetising means Expired GB966903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3124859A GB966903A (en) 1959-09-14 1959-09-14 Demagnetising means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3124859A GB966903A (en) 1959-09-14 1959-09-14 Demagnetising means

Publications (1)

Publication Number Publication Date
GB966903A true GB966903A (en) 1964-08-19

Family

ID=10320257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3124859A Expired GB966903A (en) 1959-09-14 1959-09-14 Demagnetising means

Country Status (1)

Country Link
GB (1) GB966903A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521160A (en) * 1967-04-22 1970-07-21 Hans Nix Method of making a magnetic gauge for measuring thickness of non-magnetic layers on ferromagnetic supports
CN112398379A (en) * 2019-08-12 2021-02-23 南京南瑞继保电气有限公司 Starting system and starting method of synchronous motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521160A (en) * 1967-04-22 1970-07-21 Hans Nix Method of making a magnetic gauge for measuring thickness of non-magnetic layers on ferromagnetic supports
CN112398379A (en) * 2019-08-12 2021-02-23 南京南瑞继保电气有限公司 Starting system and starting method of synchronous motor
CN112398379B (en) * 2019-08-12 2022-06-28 南京南瑞继保电气有限公司 Starting system and starting method of synchronous motor

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