GB2049317B - Keep-alive circuit for gas discharge lamp - Google Patents

Keep-alive circuit for gas discharge lamp

Info

Publication number
GB2049317B
GB2049317B GB8012040A GB8012040A GB2049317B GB 2049317 B GB2049317 B GB 2049317B GB 8012040 A GB8012040 A GB 8012040A GB 8012040 A GB8012040 A GB 8012040A GB 2049317 B GB2049317 B GB 2049317B
Authority
GB
United Kingdom
Prior art keywords
keep
discharge lamp
gas discharge
alive circuit
alive
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
GB8012040A
Other languages
English (en)
Other versions
GB2049317A (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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB2049317A publication Critical patent/GB2049317A/en
Application granted granted Critical
Publication of GB2049317B publication Critical patent/GB2049317B/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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • 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
    • H05B41/288—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 and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/2881—Load circuits; Control thereof
    • 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
    • H05B41/288—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 and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2928—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
GB8012040A 1979-04-12 1980-04-11 Keep-alive circuit for gas discharge lamp Expired GB2049317B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2932079A 1979-04-12 1979-04-12

Publications (2)

Publication Number Publication Date
GB2049317A GB2049317A (en) 1980-12-17
GB2049317B true GB2049317B (en) 1983-04-27

Family

ID=21848430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8012040A Expired GB2049317B (en) 1979-04-12 1980-04-11 Keep-alive circuit for gas discharge lamp

Country Status (5)

Country Link
JP (1) JPS55139798A (enExample)
DE (1) DE3013803A1 (enExample)
FR (1) FR2454248A1 (enExample)
GB (1) GB2049317B (enExample)
NL (1) NL8002141A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI65524C (fi) * 1982-04-21 1984-05-10 Helvar Oy Foerfarande och anordning foer matning av hoegfrekvent vaexelstroem till en fluorescenslampa

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3644818A (en) * 1971-03-10 1972-02-22 Gte Sylvania Inc Electronic flashlamp power supply
GB1529824A (en) * 1975-10-24 1978-10-25 Gen Electric Ballast circuit for gaseous discharge lamps

Also Published As

Publication number Publication date
NL8002141A (nl) 1980-10-14
FR2454248B1 (enExample) 1984-10-19
GB2049317A (en) 1980-12-17
FR2454248A1 (fr) 1980-11-07
JPS55139798A (en) 1980-10-31
DE3013803A1 (de) 1980-10-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee