GB1498093A - Variable intensity warning light - Google Patents

Variable intensity warning light

Info

Publication number
GB1498093A
GB1498093A GB9784/75A GB978475A GB1498093A GB 1498093 A GB1498093 A GB 1498093A GB 9784/75 A GB9784/75 A GB 9784/75A GB 978475 A GB978475 A GB 978475A GB 1498093 A GB1498093 A GB 1498093A
Authority
GB
United Kingdom
Prior art keywords
lamp
battery
solar cell
regulator
voltage
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
GB9784/75A
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering 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 Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of GB1498093A publication Critical patent/GB1498093A/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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

1498093 Lighting system EXXON RESEARCH & ENG CO 10 March 1975 [11 March 1974] 9784/75 Heading G1A A gas discharge flash-lamp is powered by a battery and by solar cell(s) so that the intensity of the lamp above the level due to the battery is maintained at a substantially constant contrast with respect to the ambient light level. Battery Vs which can be replenished during daytime by solar cell(s) 10, is coupled to voltage regulator 4 via a D.C. - D.C. converter comprising oscillator Os and transformer Tr. The output of the solar cell(s) 1 is applied to regulator 4 via current to voltage converter 2 and a circuit 3 which takes the square root of the voltage. The regulator 4 supplies the lamp 9, through low loss charging circuit comprising inductor 6L and capacitor 6C. Flashing of the lamp is controlled by pulse generator 7 via trigger transformer 8.
GB9784/75A 1974-03-11 1975-03-10 Variable intensity warning light Expired GB1498093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44977874A 1974-03-11 1974-03-11

Publications (1)

Publication Number Publication Date
GB1498093A true GB1498093A (en) 1978-01-18

Family

ID=23785453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9784/75A Expired GB1498093A (en) 1974-03-11 1975-03-10 Variable intensity warning light

Country Status (1)

Country Link
GB (1) GB1498093A (en)

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Legal Events

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