GB8505404D0 - Lighting systems - Google Patents

Lighting systems

Info

Publication number
GB8505404D0
GB8505404D0 GB858505404A GB8505404A GB8505404D0 GB 8505404 D0 GB8505404 D0 GB 8505404D0 GB 858505404 A GB858505404 A GB 858505404A GB 8505404 A GB8505404 A GB 8505404A GB 8505404 D0 GB8505404 D0 GB 8505404D0
Authority
GB
United Kingdom
Prior art keywords
lighting systems
lighting
systems
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.)
Granted
Application number
GB858505404A
Other versions
GB2171858B (en
GB2171858A (en
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.)
British Steel Corp
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Priority to GB08505404A priority Critical patent/GB2171858B/en
Publication of GB8505404D0 publication Critical patent/GB8505404D0/en
Publication of GB2171858A publication Critical patent/GB2171858A/en
Application granted granted Critical
Publication of GB2171858B publication Critical patent/GB2171858B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/18—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having a starting switch
GB08505404A 1985-03-02 1985-03-02 Fluorescent lighting systems Expired GB2171858B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08505404A GB2171858B (en) 1985-03-02 1985-03-02 Fluorescent lighting systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08505404A GB2171858B (en) 1985-03-02 1985-03-02 Fluorescent lighting systems

Publications (3)

Publication Number Publication Date
GB8505404D0 true GB8505404D0 (en) 1985-04-03
GB2171858A GB2171858A (en) 1986-09-03
GB2171858B GB2171858B (en) 1988-12-29

Family

ID=10575340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08505404A Expired GB2171858B (en) 1985-03-02 1985-03-02 Fluorescent lighting systems

Country Status (1)

Country Link
GB (1) GB2171858B (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971126A (en) * 1958-12-29 1961-02-07 Gen Electric Transistor inverter circuits
US3320549A (en) * 1962-11-20 1967-05-16 Philips Corp Alternating current generator having plural switchable loads in resonant output circuit
GB2065997A (en) * 1979-10-19 1981-07-01 Chung Nam Kim Fluorescent lamp circuit
US4348615A (en) * 1980-07-01 1982-09-07 Gte Products Corporation Discharge lamp operating circuit
JPS57110084A (en) * 1980-12-26 1982-07-08 Toshiba Electric Equip Corp Transistor inverter
HU181323B (en) * 1981-05-08 1983-07-28 Egyesuelt Izzolampa High-frequency system of additional resistor for electric discharge lamp
GB2104319A (en) * 1981-08-25 1983-03-02 Home Electric Company Limited Fluorescent lamp starter apparatus
EP0108815A1 (en) * 1982-11-13 1984-05-23 Peter Georg Stolzenberg High-frequency circuit for gas discharge paths
EP0113855A1 (en) * 1982-12-16 1984-07-25 NILSSEN, Ole Kristian Limited-power fluorescent ceiling lighting system
US4587463A (en) * 1983-09-22 1986-05-06 Isco, Inc. Absorbance monitor

Also Published As

Publication number Publication date
GB2171858B (en) 1988-12-29
GB2171858A (en) 1986-09-03

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970302