GB889849A - Improvements in road danger lamps - Google Patents

Improvements in road danger lamps

Info

Publication number
GB889849A
GB889849A GB17474/60A GB1747460A GB889849A GB 889849 A GB889849 A GB 889849A GB 17474/60 A GB17474/60 A GB 17474/60A GB 1747460 A GB1747460 A GB 1747460A GB 889849 A GB889849 A GB 889849A
Authority
GB
United Kingdom
Prior art keywords
tube
transistor
transferred
extinguishing
choke
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
GB17474/60A
Inventor
George William Underdown
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.)
ALEXANDER KENYON AND Co L
Original Assignee
ALEXANDER KENYON AND Co L
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 ALEXANDER KENYON AND Co L filed Critical ALEXANDER KENYON AND Co L
Priority to GB17474/60A priority Critical patent/GB889849A/en
Publication of GB889849A publication Critical patent/GB889849A/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
    • H05B41/26—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
    • 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
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/34—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp to provide a sequence of flashes
    • 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

Abstract

889,849. Visible signalling apparatus. KENYON & CO. Ltd., ALEXANDER. Oct. 11, 1960 [May 18, 1960], No. 17474/60. Class 118. The normal paraffin lamp of a road danger lamp A (Fig. 1) is replaced by an electric glow tube b which is flashed by the circuit arrangement of Fig. 2, which comprises a ringing choke transistor oscillator. During conduction of transistor 6 energy is transferred to the transformer 7, so that when the transistor is cut off, the stored energy is transferred to capacitor 5, this cycle being continued until the voltage across the tube b reaches the striking value. As soon as the tube b is lit the voltage thereacross falls to the extinguishing value, a shock wave from choke 3 effectively extinguishing the tube. Flashing rates up to 300 flashes per minute may be obtained.
GB17474/60A 1960-05-18 1960-05-18 Improvements in road danger lamps Expired GB889849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB17474/60A GB889849A (en) 1960-05-18 1960-05-18 Improvements in road danger lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17474/60A GB889849A (en) 1960-05-18 1960-05-18 Improvements in road danger lamps

Publications (1)

Publication Number Publication Date
GB889849A true GB889849A (en) 1962-02-21

Family

ID=10095803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17474/60A Expired GB889849A (en) 1960-05-18 1960-05-18 Improvements in road danger lamps

Country Status (1)

Country Link
GB (1) GB889849A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135756A1 (en) * 1983-08-08 1985-04-03 Life Light Systems High voltage flash lamp circuit and emergency signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135756A1 (en) * 1983-08-08 1985-04-03 Life Light Systems High voltage flash lamp circuit and emergency signal

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