GB781119A - Improvements in or relating to electro-magnetic relays - Google Patents
Improvements in or relating to electro-magnetic relaysInfo
- Publication number
- GB781119A GB781119A GB1396755A GB1396755A GB781119A GB 781119 A GB781119 A GB 781119A GB 1396755 A GB1396755 A GB 1396755A GB 1396755 A GB1396755 A GB 1396755A GB 781119 A GB781119 A GB 781119A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- core
- length
- equation
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
781,119. Electromagnetic relays. PETTERSSON, G. A., and KORNFELDT, P. May 13, 1955, No. 13967/55. Class 38 (5). [Also in Group XXXV] A relay comprises a magnet core with at least two branches 1, 2, at least one coil (not shown), a pivoted armature comprising a main body 4 and at least one arm portion 5, groups of contact springs and lifting studs to lift the moving springs, the relay dimensions satisfying the equation:- where R is the length of the arm portion of the armature, L the length of the main body of the armature, (R+l) the distance between the pivot axis of the armature and the point of engagement between the armature and the lifting studs, # the maximum air gap between the armature and the core, Á the permeability of the magnetic material, Aj the cross-sectional area (b x h) of the core, b the width of the core, and (D+L 1 ) half the length of the paths of lines of force in the iron (equals a- L+C+h/2 + d/2 +L 1 ). The Specification develops the equation together with others by mathematical analyses. A relay constructed according to the equation produces a maximum contact operating force for a minimum number of ampere turns. Two examples of relays having E-shaped cores are described with reference to Figs. 7-9 and 12, 13 (not shown).
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE538144D BE538144A (en) | 1955-02-19 | ||
DEP14101A DE1023823B (en) | 1955-02-19 | 1955-05-12 | Electromagnetic relay |
FR1131997D FR1131997A (en) | 1955-02-19 | 1955-05-12 | Electro-magnetic relays |
GB1396755A GB781119A (en) | 1955-05-13 | 1955-05-13 | Improvements in or relating to electro-magnetic relays |
CH341230D CH341230A (en) | 1955-02-19 | 1955-05-13 | Electromagnetic relay |
US518872A US2858488A (en) | 1955-02-19 | 1955-06-29 | Electromagnetic relay |
US737182A US2918611A (en) | 1955-02-19 | 1958-03-27 | Electromagnetic relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1396755A GB781119A (en) | 1955-05-13 | 1955-05-13 | Improvements in or relating to electro-magnetic relays |
Publications (1)
Publication Number | Publication Date |
---|---|
GB781119A true GB781119A (en) | 1957-08-14 |
Family
ID=10032628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1396755A Expired GB781119A (en) | 1955-02-19 | 1955-05-13 | Improvements in or relating to electro-magnetic relays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB781119A (en) |
-
1955
- 1955-05-13 GB GB1396755A patent/GB781119A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB980203A (en) | Improved electro-magnetic actuator | |
GB661471A (en) | Improvements in electromagnetic relays | |
GB1099081A (en) | Improvements in or relating to electro-magnetic contact making relays | |
GB781119A (en) | Improvements in or relating to electro-magnetic relays | |
GB473589A (en) | Improvements in or relating to electric contact making relays | |
GB1182044A (en) | Electro Magnetic Holding Relay | |
GB727968A (en) | Improvements in or relating to electric calculating machines | |
GB999636A (en) | Improvements in relays | |
GB1013789A (en) | Improvements in and relating to magnetic reed relay constructions | |
GB1057780A (en) | Electromagnetic relays | |
GB1187884A (en) | Improvements relating to Electromagnetic Relays. | |
ES223390U (en) | Magnetic actuator with retention magnet. (Machine-translation by Google Translate, not legally binding) | |
GB1294186A (en) | Magnet structure and magnet support structure in an electromagnetically operated switch | |
GB935023A (en) | Improvements in or relating to electromagnetic relays | |
JPS6436298A (en) | Movable coil actuator | |
SU452873A1 (en) | Electromagnetic relay | |
GB1006791A (en) | Improved electromagnetic actuator | |
GB793825A (en) | Improvements relating to polarised electromagnetic devices | |
GB1361938A (en) | Electromagnetic relay | |
GB288125A (en) | Improvements in frequency relays | |
GB778189A (en) | Improvements in or relating to electric amplifiers | |
GB539773A (en) | Means for varying the permeability of magnetic conductors for induction coils, transformers and the like | |
GB568457A (en) | Improvements in or relating to instrument type electrical relays | |
GB1199417A (en) | A Lifting Magnet. | |
ES437272A1 (en) | Electromagnetic relays operable with alternating current |