GB847417A - Improvements relating to electric discharge lamp circuits - Google Patents

Improvements relating to electric discharge lamp circuits

Info

Publication number
GB847417A
GB847417A GB4272/58A GB427258A GB847417A GB 847417 A GB847417 A GB 847417A GB 4272/58 A GB4272/58 A GB 4272/58A GB 427258 A GB427258 A GB 427258A GB 847417 A GB847417 A GB 847417A
Authority
GB
United Kingdom
Prior art keywords
transistors
winding
discharge lamp
feb
feed back
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
GB4272/58A
Inventor
Kenneth Arthur Eburn Salmon
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 Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB4272/58A priority Critical patent/GB847417A/en
Publication of GB847417A publication Critical patent/GB847417A/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
    • 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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

847,417. Transistor inverter circuits. BRITISH THOMSON-HOUSTON CO. Ltd. Feb. 6, 1959 [Feb. 10, 1958], No. 4272/58. Class 40(6). [Also in Group XXXV] A transistor inverter comprises transistors 4, 5 connected to the centre tapped primary winding 7 and the feed back winding 8 of a high reactance transformer, the secondary winding 12, 14 of which supplies a low pressure discharge lamp 13, 15. Bias to the transistors is provided by a resistor 10 and capacitor 11 connected across a battery 6 and to the centre top of the feed back winding. Closing a switch 6 connects the positive battery terminal to the transistor emitter electrodes producing a bias voltage across the base and emitter electrodes. One of the transistors became conductive before the other thus oscillations commence. The circuit frequency increases with battery voltage and with secondary load.
GB4272/58A 1958-02-10 1958-02-10 Improvements relating to electric discharge lamp circuits Expired GB847417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4272/58A GB847417A (en) 1958-02-10 1958-02-10 Improvements relating to electric discharge lamp circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4272/58A GB847417A (en) 1958-02-10 1958-02-10 Improvements relating to electric discharge lamp circuits

Publications (1)

Publication Number Publication Date
GB847417A true GB847417A (en) 1960-09-07

Family

ID=9773987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4272/58A Expired GB847417A (en) 1958-02-10 1958-02-10 Improvements relating to electric discharge lamp circuits

Country Status (1)

Country Link
GB (1) GB847417A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126031B (en) * 1960-12-28 1962-03-22 Licentia Gmbh Circuit arrangement for low-voltage fluorescent lamps that are fed from a vehicle battery or a similar direct voltage source
US3457457A (en) * 1966-10-19 1969-07-22 Automatic Displays Inc Illuminating control means
US4150323A (en) * 1975-10-01 1979-04-17 Sonca Industries Ltd. Intensity control of fluorescent lamps

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126031B (en) * 1960-12-28 1962-03-22 Licentia Gmbh Circuit arrangement for low-voltage fluorescent lamps that are fed from a vehicle battery or a similar direct voltage source
US3457457A (en) * 1966-10-19 1969-07-22 Automatic Displays Inc Illuminating control means
US4150323A (en) * 1975-10-01 1979-04-17 Sonca Industries Ltd. Intensity control of fluorescent lamps

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