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GB2209640B - Improvements relating to relays - Google Patents

Improvements relating to relays

Info

Publication number
GB2209640B
GB2209640B GB8721046A GB8721046A GB2209640B GB 2209640 B GB2209640 B GB 2209640B GB 8721046 A GB8721046 A GB 8721046A GB 8721046 A GB8721046 A GB 8721046A GB 2209640 B GB2209640 B GB 2209640B
Authority
GB
United Kingdom
Prior art keywords
relays
improvements relating
relating
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 - Fee Related
Application number
GB8721046A
Other versions
GB2209640A (en
GB8721046D0 (en
Inventor
John Henry Whitehouse
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.)
Crabtree Electrical Industries Ltd
Original Assignee
Crabtree Electrical Industries 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 Crabtree Electrical Industries Ltd filed Critical Crabtree Electrical Industries Ltd
Priority to GB8721046A priority Critical patent/GB2209640B/en
Publication of GB8721046D0 publication Critical patent/GB8721046D0/en
Priority to IE234488A priority patent/IE60357B1/en
Publication of GB2209640A publication Critical patent/GB2209640A/en
Application granted granted Critical
Publication of GB2209640B publication Critical patent/GB2209640B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
    • H01H47/043—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current making use of an energy accumulator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
GB8721046A 1987-09-08 1987-09-08 Improvements relating to relays Expired - Fee Related GB2209640B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8721046A GB2209640B (en) 1987-09-08 1987-09-08 Improvements relating to relays
IE234488A IE60357B1 (en) 1987-09-08 1988-07-29 Improvements relating to relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8721046A GB2209640B (en) 1987-09-08 1987-09-08 Improvements relating to relays

Publications (3)

Publication Number Publication Date
GB8721046D0 GB8721046D0 (en) 1987-10-14
GB2209640A GB2209640A (en) 1989-05-17
GB2209640B true GB2209640B (en) 1992-05-20

Family

ID=10623419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8721046A Expired - Fee Related GB2209640B (en) 1987-09-08 1987-09-08 Improvements relating to relays

Country Status (2)

Country Link
GB (1) GB2209640B (en)
IE (1) IE60357B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2265015B (en) * 1992-03-14 1995-08-23 Ampy Automation Digilog Improvements in and relating to electricity measuring meters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449198A (en) * 1972-12-21 1976-09-15 Square D Co Excitation control circuit for electromagnetic coil
GB2124044A (en) * 1982-07-10 1984-02-08 Lucas Ind Plc Power supply circuit
EP0120258A1 (en) * 1983-02-25 1984-10-03 Siemens Aktiengesellschaft Energy economising circuit
EP0196960A1 (en) * 1985-03-28 1986-10-08 Regie Nationale Des Usines Renault Fast acting control device for electromagnetic devices

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449198A (en) * 1972-12-21 1976-09-15 Square D Co Excitation control circuit for electromagnetic coil
GB2124044A (en) * 1982-07-10 1984-02-08 Lucas Ind Plc Power supply circuit
EP0120258A1 (en) * 1983-02-25 1984-10-03 Siemens Aktiengesellschaft Energy economising circuit
EP0196960A1 (en) * 1985-03-28 1986-10-08 Regie Nationale Des Usines Renault Fast acting control device for electromagnetic devices

Also Published As

Publication number Publication date
IE60357B1 (en) 1994-06-29
GB2209640A (en) 1989-05-17
GB8721046D0 (en) 1987-10-14
IE882344L (en) 1989-03-08

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010908