GB463877A - Improvements in and relating to circuits including electric discharge devices - Google Patents

Improvements in and relating to circuits including electric discharge devices

Info

Publication number
GB463877A
GB463877A GB2778235A GB2778235A GB463877A GB 463877 A GB463877 A GB 463877A GB 2778235 A GB2778235 A GB 2778235A GB 2778235 A GB2778235 A GB 2778235A GB 463877 A GB463877 A GB 463877A
Authority
GB
United Kingdom
Prior art keywords
condenser
supply
choke
parallel
relating
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
GB2778235A
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 GB2778235A priority Critical patent/GB463877A/en
Publication of GB463877A publication Critical patent/GB463877A/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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/40—Controlling the intensity of light discontinuously
    • H05B41/42—Controlling the intensity of light discontinuously in two steps only

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

463,877. Supply systems for discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., MITCHELL, J. H., and SCOTT, W. J. Oct. 8, 1935, No. 27782. [Class 38 (iv)] An arrangement for reducing the supply to a luminous discharge lamp 2 including a choke 1 in series in the supply circuit and a condenser 3 across the supply for power factor correction comprises switching means for connecting a condenser in parallel with the choke to increase the impedance of the combination. In the form shown, the -condenser 3 normally in parallel with the supply is connected across the choke. In a modification a separate condenser is connected in parallel by a switch. In other modifications of this, the switch is arranged to connect the condenser 3 in series or in parallel with a further condenser across the choke. Specifications 428,084 and 448,783, [both in Group XL], are referred to.
GB2778235A 1935-10-08 1935-10-08 Improvements in and relating to circuits including electric discharge devices Expired GB463877A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2778235A GB463877A (en) 1935-10-08 1935-10-08 Improvements in and relating to circuits including electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2778235A GB463877A (en) 1935-10-08 1935-10-08 Improvements in and relating to circuits including electric discharge devices

Publications (1)

Publication Number Publication Date
GB463877A true GB463877A (en) 1937-04-08

Family

ID=10265209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2778235A Expired GB463877A (en) 1935-10-08 1935-10-08 Improvements in and relating to circuits including electric discharge devices

Country Status (1)

Country Link
GB (1) GB463877A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010009894A1 (en) * 2008-07-25 2010-01-28 Koennecke Tilo Circuit arrangement and method for controlling the power consumption of illumination systems having an alternating current supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010009894A1 (en) * 2008-07-25 2010-01-28 Koennecke Tilo Circuit arrangement and method for controlling the power consumption of illumination systems having an alternating current supply

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