GB528940A - Improvements relating to magnetic electric relays - Google Patents
Improvements relating to magnetic electric relaysInfo
- Publication number
- GB528940A GB528940A GB1477539A GB1477539A GB528940A GB 528940 A GB528940 A GB 528940A GB 1477539 A GB1477539 A GB 1477539A GB 1477539 A GB1477539 A GB 1477539A GB 528940 A GB528940 A GB 528940A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heater
- permeability
- effected
- heating coil
- armature
- 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)
- Relay Circuits (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
528,940. Electric selective signalling. PRICE, D. R., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. May 17, 1939, No. 14775. [Class 40 (i)] [Also in Group XXXVII] Operation of a relay is effected by the reduction of permeability of an armature when heated by a heating coil, and the heating coil is itself controlled by a frequency responsive relay energized by the superimposition of a ripple of predetermined frequency on a supply system. In the form shown, a contact-carrying member 1 formed of Jae metal has two portions 5, 6 forming armatures attracted respectively by permanent magnets 3, 4. When current passes through a heater 9, the loss of permeability of the armature allows the magnet 3 to rotate the member 1 about its axis 2 to close contacts 10, 11. The return movement is effected by passing current through a heater 8. The heaters 8, 9 are selectively energized by selectively operating one or other of two frequencyresponsive relays 12, 13 of the type described in Specification 517,971, [Group XXXVII], thereby removing a short-circuit from the appropriate heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1477539A GB528940A (en) | 1939-05-17 | 1939-05-17 | Improvements relating to magnetic electric relays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1477539A GB528940A (en) | 1939-05-17 | 1939-05-17 | Improvements relating to magnetic electric relays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB528940A true GB528940A (en) | 1940-11-11 |
Family
ID=10047260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1477539A Expired GB528940A (en) | 1939-05-17 | 1939-05-17 | Improvements relating to magnetic electric relays |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB528940A (en) |
-
1939
- 1939-05-17 GB GB1477539A patent/GB528940A/en not_active Expired
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