GB1466215A - Electric circuit arrangement for operating a high pressure sodium discharge lamp - Google Patents

Electric circuit arrangement for operating a high pressure sodium discharge lamp

Info

Publication number
GB1466215A
GB1466215A GB2184675A GB2184675A GB1466215A GB 1466215 A GB1466215 A GB 1466215A GB 2184675 A GB2184675 A GB 2184675A GB 2184675 A GB2184675 A GB 2184675A GB 1466215 A GB1466215 A GB 1466215A
Authority
GB
United Kingdom
Prior art keywords
high pressure
discharge lamp
pressure sodium
operating
electric circuit
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
GB2184675A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2184675A priority Critical patent/GB1466215A/en
Publication of GB1466215A publication Critical patent/GB1466215A/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
    • H05B41/20—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 no starting switch
    • H05B41/23—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 no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/231—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 no starting switch for lamps not having an auxiliary starting electrode for high-pressure lamps

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1466215 Supply systems for discharge lamps J CATES 21 May 1975 21846/75 Heading H2H In order to enhance the operation of a high pressure sodium discharge lamp 1, having a ballast device comprising a serially connected inductor 2 and a capacitor 2, the ratio of the impedance of the inductor 3 at the frequency of the A.C. supply 4 to the total impedance of the inductor 3 and the capacitor 2 at the supply frequency is arranged to fall in the range of 1À45-1À75 and preferably 1À6. The ballast device is predominantly capacitive.
GB2184675A 1975-05-21 1975-05-21 Electric circuit arrangement for operating a high pressure sodium discharge lamp Expired GB1466215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2184675A GB1466215A (en) 1975-05-21 1975-05-21 Electric circuit arrangement for operating a high pressure sodium discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2184675A GB1466215A (en) 1975-05-21 1975-05-21 Electric circuit arrangement for operating a high pressure sodium discharge lamp

Publications (1)

Publication Number Publication Date
GB1466215A true GB1466215A (en) 1977-03-02

Family

ID=10169797

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2184675A Expired GB1466215A (en) 1975-05-21 1975-05-21 Electric circuit arrangement for operating a high pressure sodium discharge lamp

Country Status (1)

Country Link
GB (1) GB1466215A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340844A (en) * 1978-03-10 1982-07-20 Mitsubishi Denki Kabushiki Kaisha Lighting equipment
GB2140229A (en) * 1983-05-17 1984-11-21 Emi Plc Thorn Discharge lamp start and supply circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340844A (en) * 1978-03-10 1982-07-20 Mitsubishi Denki Kabushiki Kaisha Lighting equipment
GB2140229A (en) * 1983-05-17 1984-11-21 Emi Plc Thorn Discharge lamp start and supply circuit

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Legal Events

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