GB643637A - Improvements in or relating to ballasts for use in the circuits of electric discharge lamps - Google Patents

Improvements in or relating to ballasts for use in the circuits of electric discharge lamps

Info

Publication number
GB643637A
GB643637A GB2088648A GB2088648A GB643637A GB 643637 A GB643637 A GB 643637A GB 2088648 A GB2088648 A GB 2088648A GB 2088648 A GB2088648 A GB 2088648A GB 643637 A GB643637 A GB 643637A
Authority
GB
United Kingdom
Prior art keywords
coils
electric discharge
ballast
paths
ballasts
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
GB2088648A
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.)
EKCO ENSIGN ELECTRIC Ltd
Original Assignee
EKCO ENSIGN ELECTRIC 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 EKCO ENSIGN ELECTRIC Ltd filed Critical EKCO ENSIGN ELECTRIC Ltd
Priority to GB2088648A priority Critical patent/GB643637A/en
Publication of GB643637A publication Critical patent/GB643637A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

643,637. Inductances. EKCO-ENSIGN ELECTRIC, Ltd., and STICKLEY, W. A. Aug. 7, 1948, No. 20886. [Class 38 (ii)] A ballast for use with an electric discharge lamp comprises two inductance coils c, d mounted on a common core e and arranged so that the adjacent poles of the windings are similar, the electrical characteristics of the ballast being adjusted by variation of the distance between the coils, the coils being permanently fixed after adjustment, e.g. by impregnating the whole assembly in a thermosetting material. The heavy broken lines indicate the paths of the magnetic flux so that the spaces g form air gaps in these paths. Movement of the coils towards each other causes the fluxes across the air gaps to be bunched together having an effect similar to that of increasing the length of the air-gaps.
GB2088648A 1948-08-07 1948-08-07 Improvements in or relating to ballasts for use in the circuits of electric discharge lamps Expired GB643637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2088648A GB643637A (en) 1948-08-07 1948-08-07 Improvements in or relating to ballasts for use in the circuits of electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2088648A GB643637A (en) 1948-08-07 1948-08-07 Improvements in or relating to ballasts for use in the circuits of electric discharge lamps

Publications (1)

Publication Number Publication Date
GB643637A true GB643637A (en) 1950-09-20

Family

ID=10153428

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2088648A Expired GB643637A (en) 1948-08-07 1948-08-07 Improvements in or relating to ballasts for use in the circuits of electric discharge lamps

Country Status (1)

Country Link
GB (1) GB643637A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437053A1 (en) * 1978-09-19 1980-04-18 Espan Carburos Metal IMPROVEMENTS IN CONSTRUCTION OF TRANSFORMERS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437053A1 (en) * 1978-09-19 1980-04-18 Espan Carburos Metal IMPROVEMENTS IN CONSTRUCTION OF TRANSFORMERS

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