GB194117A - Improvements in and relating to electromagnets - Google Patents

Improvements in and relating to electromagnets

Info

Publication number
GB194117A
GB194117A GB494422A GB494422A GB194117A GB 194117 A GB194117 A GB 194117A GB 494422 A GB494422 A GB 494422A GB 494422 A GB494422 A GB 494422A GB 194117 A GB194117 A GB 194117A
Authority
GB
United Kingdom
Prior art keywords
armature
core
magnetic
shading coil
divided
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
GB494422A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Priority to GB494422A priority Critical patent/GB194117A/en
Publication of GB194117A publication Critical patent/GB194117A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/10—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current
    • H01F7/12—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current having anti-chattering arrangements
    • H01F7/1205—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current having anti-chattering arrangements having short-circuited conductors

Abstract

194,117. British Thomson - Houston Co., Ltd., (General Electric Co.). Feb. 20, 1922. Electromagnets.-To prevent chattering and to eliminate residual magnetism in an alternating- current electromagnet, a shading coil is provided on the magnet core or on the armature, and a short section of non-magnetic material is provided near the face of the core, or of the armature, or of both members. Fig. 1 shows a pot magnet in which the armature 3 carries a shading coil 8 in a slotted recess 9 and is divided into long and short portions by non-magnetic material 6. The fixed pole-piece 4 may be divided by a non-magnetic layer 10. In another form, Fig. 3, the non-magnetic portion 19 is provided on the armature 17, and the shading coil 24 is on the core 15; a non-magnetic piece 22 may be provided on the core. Fig. 4 shows a form of armature in which the non-magnetic layer is arranged in another manner.
GB494422A 1922-02-20 1922-02-20 Improvements in and relating to electromagnets Expired GB194117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB494422A GB194117A (en) 1922-02-20 1922-02-20 Improvements in and relating to electromagnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB494422A GB194117A (en) 1922-02-20 1922-02-20 Improvements in and relating to electromagnets

Publications (1)

Publication Number Publication Date
GB194117A true GB194117A (en) 1923-03-08

Family

ID=9786787

Family Applications (1)

Application Number Title Priority Date Filing Date
GB494422A Expired GB194117A (en) 1922-02-20 1922-02-20 Improvements in and relating to electromagnets

Country Status (1)

Country Link
GB (1) GB194117A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1109790B (en) * 1956-11-23 1961-06-29 Telemecanique Electrique AC magnet, in particular for use as a contactor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1109790B (en) * 1956-11-23 1961-06-29 Telemecanique Electrique AC magnet, in particular for use as a contactor

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