GB611810A - Improvements in or relating to the control of alternating currents in parallel-connected load-circuits - Google Patents

Improvements in or relating to the control of alternating currents in parallel-connected load-circuits

Info

Publication number
GB611810A
GB611810A GB1395946A GB1395946A GB611810A GB 611810 A GB611810 A GB 611810A GB 1395946 A GB1395946 A GB 1395946A GB 1395946 A GB1395946 A GB 1395946A GB 611810 A GB611810 A GB 611810A
Authority
GB
United Kingdom
Prior art keywords
control
chokes
circuits
parallel
saturation
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
GB1395946A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1395946A priority Critical patent/GB611810A/en
Publication of GB611810A publication Critical patent/GB611810A/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
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/391—Controlling the intensity of light continuously using saturable magnetic devices

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

611,810. Control systems for consumption apparatus. GENERAL ELECTRIC CO., Ltd., and DUNHAM, C. R. May 8, 1946, No. 13959. [Class 38 (iv)] Inductive control.-Stimulaneous control of a plurality of parallel connected A.C. load circuits A, B, C, which may comprise cold cathode discharge lamps 1-6, is effected by passing a variable D.C. or lower frequency A.C. through series connected saturation controlling windings 23, 24, 25 on two-part chokes 17, 18, 19 in each load circuit. The chokes are arranged to avoid feedback into the controlling circuit. In a modified arrangement each discharge lamp is supplied by two transformers connected respectively between each electrode and earth. In a further modification, each transformer has an additional core limb arranged for saturation by a control winding and chokes are not used. Additional control windings on one or more of the chokes or transformers may provide independent control of one or more circuits or determine a fixed current relationship.
GB1395946A 1946-05-08 1946-05-08 Improvements in or relating to the control of alternating currents in parallel-connected load-circuits Expired GB611810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1395946A GB611810A (en) 1946-05-08 1946-05-08 Improvements in or relating to the control of alternating currents in parallel-connected load-circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1395946A GB611810A (en) 1946-05-08 1946-05-08 Improvements in or relating to the control of alternating currents in parallel-connected load-circuits

Publications (1)

Publication Number Publication Date
GB611810A true GB611810A (en) 1948-11-04

Family

ID=10032474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1395946A Expired GB611810A (en) 1946-05-08 1946-05-08 Improvements in or relating to the control of alternating currents in parallel-connected load-circuits

Country Status (1)

Country Link
GB (1) GB611810A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032682A (en) * 1959-10-22 1962-05-01 Gen Electric Three-phase saturable reactor type ballast
US4574222A (en) * 1983-12-27 1986-03-04 General Electric Company Ballast circuit for multiple parallel negative impedance loads

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032682A (en) * 1959-10-22 1962-05-01 Gen Electric Three-phase saturable reactor type ballast
US4574222A (en) * 1983-12-27 1986-03-04 General Electric Company Ballast circuit for multiple parallel negative impedance loads

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