GB650242A - Improvements in or relating to electromagnetic relays - Google Patents
Improvements in or relating to electromagnetic relaysInfo
- Publication number
- GB650242A GB650242A GB2724148A GB2724148A GB650242A GB 650242 A GB650242 A GB 650242A GB 2724148 A GB2724148 A GB 2724148A GB 2724148 A GB2724148 A GB 2724148A GB 650242 A GB650242 A GB 650242A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- coil
- yoke
- soft iron
- pole
- 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
- H01H51/00—Electromagnetic relays
- H01H51/01—Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
650,242. Electromagnetic relays. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Oct. 20, 1948, No. 27241. [Class 38(v)] The armature of a relay carries a permanent magnet which forms part of two magnetic circuits which hold it firmly in either of its two positions when the coil of the relay is de-energized. The armature is moved to its other position by sending a current through the coil in the reverse direction. In the form shown in Fig. 1, the armature and magnet 25, which is pivoted at 24 is held in the position shown by a magnetic circuit including a soft iron extension 18 of the yoke 10, the effect of this being greater than that of the alternative circuit through the core 12 and yoke 10. On sending a current through the coil 11 so as to produce a N pole at 29, the armature is attracted to the pole 29 and is there held, even after de-energization of the coil 11, by the now greater effect of this second circuit. In a modification, the permanent magnet is fixed to a soft iron member pivoting about a knife edge and lies between two L-shaped arms of soft iron fixed to the yoke, and linked at their lower ends by a crosspiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2724148A GB650242A (en) | 1948-10-20 | 1948-10-20 | Improvements in or relating to electromagnetic relays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2724148A GB650242A (en) | 1948-10-20 | 1948-10-20 | Improvements in or relating to electromagnetic relays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB650242A true GB650242A (en) | 1951-02-21 |
Family
ID=10256394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2724148A Expired GB650242A (en) | 1948-10-20 | 1948-10-20 | Improvements in or relating to electromagnetic relays |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB650242A (en) |
-
1948
- 1948-10-20 GB GB2724148A patent/GB650242A/en not_active Expired
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