GB972249A - Improvements in or relating to the supply of direct current - Google Patents

Improvements in or relating to the supply of direct current

Info

Publication number
GB972249A
GB972249A GB3493961A GB3493961A GB972249A GB 972249 A GB972249 A GB 972249A GB 3493961 A GB3493961 A GB 3493961A GB 3493961 A GB3493961 A GB 3493961A GB 972249 A GB972249 A GB 972249A
Authority
GB
United Kingdom
Prior art keywords
supply
energization
circuit
sept
stand
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
GB3493961A
Inventor
Laurence James Nolder
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.)
Walter Kidde Ltd
Original Assignee
Walter Kidde 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 Walter Kidde Ltd filed Critical Walter Kidde Ltd
Priority to GB3493961A priority Critical patent/GB972249A/en
Publication of GB972249A publication Critical patent/GB972249A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

972,249. Stand-by arrangements for D.C. supply. WALTER KIDDE CO. Ltd. Sept. 28, 1962 [Sept. 28, 1961], No. 34939/61. Heading H2H. A D.C. supply, suitable for the fire detection system of Specification 972,248, is normally provided from the A.C. mains through a transformer 1 and rectifier bridge 2, the consequent energization of a relay coil B5 completing a circuit through contact B2 to the output terminals 3, 4. Failure of the A.C. main supply or members 1, 2 and subsequent de-energization of coil B5 completes a circuit through contact B1 from a stand-by battery 8 to the terminals 3, 4, such de-energization also closing normallyopen contacts B3, B4 to operate a buzzer 10 and lamps 11. These alarms are also operated by closure of contacts A1, A2 upon de-energization of a relay coil A3 connected in the battery charging circuit from a rectifier bridge 9.
GB3493961A 1961-09-28 1961-09-28 Improvements in or relating to the supply of direct current Expired GB972249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3493961A GB972249A (en) 1961-09-28 1961-09-28 Improvements in or relating to the supply of direct current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3493961A GB972249A (en) 1961-09-28 1961-09-28 Improvements in or relating to the supply of direct current

Publications (1)

Publication Number Publication Date
GB972249A true GB972249A (en) 1964-10-14

Family

ID=10371824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3493961A Expired GB972249A (en) 1961-09-28 1961-09-28 Improvements in or relating to the supply of direct current

Country Status (1)

Country Link
GB (1) GB972249A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185646A (en) * 1986-01-21 1987-07-22 Hubbell Inc Harvey Emergency lighting circuits
DE4213838A1 (en) * 1991-11-01 1993-05-06 Samsung Electronics Co., Ltd., Suwon, Kr FAST CHARGER FOR A BATTERY

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185646A (en) * 1986-01-21 1987-07-22 Hubbell Inc Harvey Emergency lighting circuits
GB2185646B (en) * 1986-01-21 1990-04-18 Hubbell Inc Harvey Emergency lighting circuits
DE4213838A1 (en) * 1991-11-01 1993-05-06 Samsung Electronics Co., Ltd., Suwon, Kr FAST CHARGER FOR A BATTERY
GB2261124B (en) * 1991-11-01 1996-01-17 Samsung Electronics Co Ltd Battery charging and power supply device
DE4213838B4 (en) * 1991-11-01 2006-04-27 Samsung Electronics Co., Ltd., Suwon Battery charger for the battery of a system

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