GB623199A - Improvements in and relating to electric discharge tube circuits - Google Patents

Improvements in and relating to electric discharge tube circuits

Info

Publication number
GB623199A
GB623199A GB22707/46A GB2270746A GB623199A GB 623199 A GB623199 A GB 623199A GB 22707/46 A GB22707/46 A GB 22707/46A GB 2270746 A GB2270746 A GB 2270746A GB 623199 A GB623199 A GB 623199A
Authority
GB
United Kingdom
Prior art keywords
transformer
condenser
electrode
primary winding
series
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
GB22707/46A
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
Publication of GB623199A publication Critical patent/GB623199A/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
    • H05B41/232—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 low-pressure lamps
    • H05B41/2325—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 low-pressure lamps provided with pre-heating electrodes

Landscapes

  • Treatment Of Fiber Materials (AREA)
  • Discharge Heating (AREA)

Abstract

623,199. Supply systems for space-discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. July 30, 1946, No. 22707. Convention date, July 31, 1945. [Class 38 (iv)] An electric discharge device having filamentary electrodes has at least one electrode heated by a transformer 4 with magnetic leakage which has its primary winding 5, in series with a condenser 9, connected to an A.C. source, and the discharge path of the device L, in series with a high inductance 2 is connected in parallel with the primary winding and condenser. The magnetic leakage of the transformer raises the impedance of the arrangement to high frequencies such as may be used for remote-controlled relays. The heating transformer may have two secondary windings to supply current to the two electrodes and the inductance 2 may form the secondary winding of an auto-transformer 1, 2 with a magnetic shunt 3. The primary winding 5 and condenser may have an electrode 7 in series therewith. According to Fig. 1, the electrode 7 carries a current comprising two components which, after the discharge has begun, vary so as to effect a saving in power. All the circuit arrangements may be provided with a striking strip 10 to reduce the starting period.
GB22707/46A 1945-07-31 1946-07-30 Improvements in and relating to electric discharge tube circuits Expired GB623199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR623199X 1945-07-31

Publications (1)

Publication Number Publication Date
GB623199A true GB623199A (en) 1949-05-13

Family

ID=8986314

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22707/46A Expired GB623199A (en) 1945-07-31 1946-07-30 Improvements in and relating to electric discharge tube circuits

Country Status (1)

Country Link
GB (1) GB623199A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683240A (en) * 1949-09-20 1954-07-06 Thorn Electrical Ind Ltd Electric lamp circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683240A (en) * 1949-09-20 1954-07-06 Thorn Electrical Ind Ltd Electric lamp circuits

Similar Documents

Publication Publication Date Title
GB716891A (en) Improvements in or relating to high-frequency electric furnaces
GB623199A (en) Improvements in and relating to electric discharge tube circuits
GB594626A (en) Improvements in and relating to circuits for electric discharge lamps
GB574980A (en) Improvements in combinations of electric discharge lamps with means for operating them
US2334587A (en) Starting and ballasting apparatus for electric discharge devices
GB616049A (en) Improvements in circuits for electric discharge apparatus
GB589571A (en) Improvements in and relating to circuits for electric discharge lamps
GB622799A (en) Improvements relating to fluorescent electric lighting systems
GB525133A (en) Improvements in circuit arrangements for operating electric discharge devices
GB848548A (en) Starting circuit for electric discharge lamps
GB595697A (en) Improved apparatus for electric arc welding
GB657072A (en) Improvements in or relating to electric circuit arrangements for operating electric discharge lamps on a.c.
GB641194A (en) Devices for the heating of work-pieces by induced high frequency currents
GB760674A (en) Improvements relating to starting circuits for electric discharge lamps
GB680362A (en) Improvements relating to the operation of electric discharge lamps
GB612958A (en) Improvements relating to starting arrangements for electric fluorescent lamps and other discharge devices
GB498107A (en) Improvements in circuit arrangements for operating electric discharge devices
GB614509A (en) Improvements in and relating to starting arrangements for electric discharge devices
GB639295A (en) Improvements in supply circuits for electric discharge tubes
GB650992A (en) Improvements in or relating to circuit arrangements for electric discharge lamps
GB594486A (en) Improved apparatus for electric arc welding
GB624430A (en) Improvements in high frequency ignition systems
ES237335A1 (en) Improvements in high frequency arc welding appliances (Machine-translation by Google Translate, not legally binding)
GB1146320A (en) An arrangement for the high frequency starting of an electrical discharge lamp
GB683894A (en) Improvements in and relating to high frequency generators