GB275728A - Improvements in electro-magnetic relays - Google Patents

Improvements in electro-magnetic relays

Info

Publication number
GB275728A
GB275728A GB1230426A GB1230426A GB275728A GB 275728 A GB275728 A GB 275728A GB 1230426 A GB1230426 A GB 1230426A GB 1230426 A GB1230426 A GB 1230426A GB 275728 A GB275728 A GB 275728A
Authority
GB
United Kingdom
Prior art keywords
winding
core
armature
effecting
relay
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
GB1230426A
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.)
Automatic Telephone Manufacturing Co Ltd
Original Assignee
Automatic Telephone Manufacturing Co 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 Automatic Telephone Manufacturing Co Ltd filed Critical Automatic Telephone Manufacturing Co Ltd
Priority to GB1230426A priority Critical patent/GB275728A/en
Publication of GB275728A publication Critical patent/GB275728A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Abstract

275,728. Automatic Telephone Manufacturing Co., Ltd., and Adams, H. May 12, 1926. Contact-making relays.- A two-step relay has the winding for effecting the partial operation mounted on a portion of the core of small cross-section as compared with the core surrounded by the winding for effecting the full operation so that a considerable increase in the current through the first winding will not appreciably increase the pull on the armature. As shown in the Figure the winding 3 for effecting partial operation of the armature 5 is wound on a portion of the core 2 of smaller diameter than that surrounded by the main winding 4 so that the constricted portion is normally approaching saturation and variations of the applied voltage make little difference on the pull of the armature. The constricted portion of the core may be formed by turning down a portion of a standard core iron. The relay may be used to operate as a marginal relay over junction telephone lines and the second winding may be energized by operation of x springs by the partial attraction of the armature.
GB1230426A 1926-05-12 1926-05-12 Improvements in electro-magnetic relays Expired GB275728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1230426A GB275728A (en) 1926-05-12 1926-05-12 Improvements in electro-magnetic relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1230426A GB275728A (en) 1926-05-12 1926-05-12 Improvements in electro-magnetic relays

Publications (1)

Publication Number Publication Date
GB275728A true GB275728A (en) 1927-08-12

Family

ID=10002054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1230426A Expired GB275728A (en) 1926-05-12 1926-05-12 Improvements in electro-magnetic relays

Country Status (1)

Country Link
GB (1) GB275728A (en)

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