GB2248984B - An emergency light circuit - Google Patents

An emergency light circuit

Info

Publication number
GB2248984B
GB2248984B GB9022732A GB9022732A GB2248984B GB 2248984 B GB2248984 B GB 2248984B GB 9022732 A GB9022732 A GB 9022732A GB 9022732 A GB9022732 A GB 9022732A GB 2248984 B GB2248984 B GB 2248984B
Authority
GB
United Kingdom
Prior art keywords
emergency light
light circuit
circuit
emergency
light
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 - Lifetime
Application number
GB9022732A
Other versions
GB9022732D0 (en
GB2248984A (en
Inventor
Brendan Walsh
Brian Ford
Michael Brennan
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.)
POWER STANDBY SYSTEMS Ltd
Original Assignee
POWER STANDBY SYSTEMS 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 POWER STANDBY SYSTEMS Ltd filed Critical POWER STANDBY SYSTEMS Ltd
Priority to GB9022732A priority Critical patent/GB2248984B/en
Priority to BE9001096A priority patent/BE1002444A6/en
Publication of GB9022732D0 publication Critical patent/GB9022732D0/en
Publication of GB2248984A publication Critical patent/GB2248984A/en
Application granted granted Critical
Publication of GB2248984B publication Critical patent/GB2248984B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H02J9/062—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 for AC powered loads
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2853—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
GB9022732A 1990-10-19 1990-10-19 An emergency light circuit Expired - Lifetime GB2248984B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9022732A GB2248984B (en) 1990-10-19 1990-10-19 An emergency light circuit
BE9001096A BE1002444A6 (en) 1990-10-19 1990-11-20 EMERGENCY LIGHTING CIRCUIT.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9022732A GB2248984B (en) 1990-10-19 1990-10-19 An emergency light circuit

Publications (3)

Publication Number Publication Date
GB9022732D0 GB9022732D0 (en) 1990-12-05
GB2248984A GB2248984A (en) 1992-04-22
GB2248984B true GB2248984B (en) 1994-05-04

Family

ID=10683984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9022732A Expired - Lifetime GB2248984B (en) 1990-10-19 1990-10-19 An emergency light circuit

Country Status (2)

Country Link
BE (1) BE1002444A6 (en)
GB (1) GB2248984B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1304279A (en) * 1969-04-08 1973-01-24
GB1307366A (en) * 1969-06-11 1973-02-21 Bardic Systems Ltd Emergency electric lighting units
GB1401552A (en) * 1972-02-23 1975-07-16 Accumulateurs Fixes Emergency supply circuit
GB1422486A (en) * 1973-04-16 1976-01-28 Philips Corp Emergency system for operating an electric load
US4144462A (en) * 1977-04-28 1979-03-13 Dual-Lite, Inc. Emergency lighting fluorescent pack
WO1989007855A1 (en) * 1988-02-22 1989-08-24 Bavco Manufacturing Company Backup electrical system for lamps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1304279A (en) * 1969-04-08 1973-01-24
GB1307366A (en) * 1969-06-11 1973-02-21 Bardic Systems Ltd Emergency electric lighting units
GB1401552A (en) * 1972-02-23 1975-07-16 Accumulateurs Fixes Emergency supply circuit
GB1422486A (en) * 1973-04-16 1976-01-28 Philips Corp Emergency system for operating an electric load
US4144462A (en) * 1977-04-28 1979-03-13 Dual-Lite, Inc. Emergency lighting fluorescent pack
WO1989007855A1 (en) * 1988-02-22 1989-08-24 Bavco Manufacturing Company Backup electrical system for lamps

Also Published As

Publication number Publication date
GB9022732D0 (en) 1990-12-05
BE1002444A6 (en) 1991-02-12
GB2248984A (en) 1992-04-22

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20101018