[go: up one dir, main page]

GB303085A - Improvements in or relating to electromagnetic devices operated by alternating or oscillatory currents - Google Patents

Improvements in or relating to electromagnetic devices operated by alternating or oscillatory currents

Info

Publication number
GB303085A
GB303085A GB2542327A GB2542327A GB303085A GB 303085 A GB303085 A GB 303085A GB 2542327 A GB2542327 A GB 2542327A GB 2542327 A GB2542327 A GB 2542327A GB 303085 A GB303085 A GB 303085A
Authority
GB
United Kingdom
Prior art keywords
winding
alternating
relating
devices operated
electromagnetic devices
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
GB2542327A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2542327A priority Critical patent/GB303085A/en
Publication of GB303085A publication Critical patent/GB303085A/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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control Of Linear Motors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

303,085. Kofmann,J. Sept. 26, 1927. Solenoids.-A solenoid is provided with an exciting winding OW carrying an alternating current, a polarizing winding IW carrying a continuous current, and an armature MC controlled by a spring HS or otherwise so as to have a natural period of vibration considerably greater than that of the alternating current; the external circuit of the winding IW is of low impedance, or a separate short-circuited winding is provided. In the arrangement shown, the armature MC carries a brush A moving over a rheostat, or it may operate an indicator or a switch. For the polarizing winding a permanent magnet may be substituted.
GB2542327A 1927-09-26 1927-09-26 Improvements in or relating to electromagnetic devices operated by alternating or oscillatory currents Expired GB303085A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2542327A GB303085A (en) 1927-09-26 1927-09-26 Improvements in or relating to electromagnetic devices operated by alternating or oscillatory currents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2542327A GB303085A (en) 1927-09-26 1927-09-26 Improvements in or relating to electromagnetic devices operated by alternating or oscillatory currents

Publications (1)

Publication Number Publication Date
GB303085A true GB303085A (en) 1928-12-27

Family

ID=10227421

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2542327A Expired GB303085A (en) 1927-09-26 1927-09-26 Improvements in or relating to electromagnetic devices operated by alternating or oscillatory currents

Country Status (1)

Country Link
GB (1) GB303085A (en)

Similar Documents

Publication Publication Date Title
GB309409A (en) Improvements in vibrators
GB303085A (en) Improvements in or relating to electromagnetic devices operated by alternating or oscillatory currents
GB517001A (en) Improvements relating to electromagnetic relays
GB299360A (en) Improvements in or relating to electromagnetic relays
GB347726A (en) Improvements in electromagnetic interrupter apparatus
GB424795A (en) Improvements in or relating to electromagnetic relays
GB477661A (en) Improvements in or relating to flushing devices
GB208567A (en) Improvements in and relating to electric switches
GB385346A (en) An improved resonance relay according to the ferraris principle
US1825238A (en) Electrical relay
GB478110A (en) Improvements in or relating to electrical relays
GB185100A (en) A new or improved electric relay
GB253328A (en) Improvements in electromagnetic relays
GB371432A (en) Improvements in oscillatory electric motors
GB630531A (en) Improvements in or relating to instrument type relays
GB196362A (en) Improvements in and relating to electric relays and the like
GB417311A (en) Improvements in and relating to electromagnetic devices
GB234425A (en) Improved method of and means for preserving the magnetism in permanent magnets
GB517431A (en) Improved electromagnetic transport device
GB358070A (en) Improvements in or relating to electric relays
GB705342A (en) Alternating current ringers
GB159260A (en) Improvements in means for controlling the operative field of magnets
GB424400A (en) Improvements in or relating to devices for testing the armatures of electric motors
GB176126A (en) Improvements in or relating to electromagnetic relays
GB208073A (en) Improvements in electromagnetic interrupters and like apparatus