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GB1247409A - Ignition device for discharge tubes - Google Patents

Ignition device for discharge tubes

Info

Publication number
GB1247409A
GB1247409A GB2382669A GB2382669A GB1247409A GB 1247409 A GB1247409 A GB 1247409A GB 2382669 A GB2382669 A GB 2382669A GB 2382669 A GB2382669 A GB 2382669A GB 1247409 A GB1247409 A GB 1247409A
Authority
GB
United Kingdom
Prior art keywords
capacitor
diac
transformer
ignition device
supply
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
GB2382669A
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.)
Nokia Oyj
Original Assignee
Nokia Oyj
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 Nokia Oyj filed Critical Nokia Oyj
Publication of GB1247409A publication Critical patent/GB1247409A/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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

1,247,409. Control systems for gas discharge lamps. NOKIA A.B., OY. 9 May, 1969 [10 May, 1968], No. 23826/69. Heading H2H. A system for starting a discharge lamp 10 comprises a resistor-capacitor circuit 8, 9 connected across an A.C. supply so that when the capacitor 9 is charged to a predetermined voltage a diac 7 breaks down to trigger a triac 6 thereby energizing the primary winding of a transformer 5, the resulting high voltage of the secondary winding being used to start the lamp 10. The energization of the primary winding occurs in every half-cycle of the A.C. supply and the capacitor 9 fails to reach the breakdown voltage of the diac when the tube 10 is illuminated. In a second embodiment the choke 2 forms the secondary winding of the transformer.
GB2382669A 1968-05-10 1969-05-09 Ignition device for discharge tubes Expired GB1247409A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI131868A FI41840B (en) 1968-05-10 1968-05-10

Publications (1)

Publication Number Publication Date
GB1247409A true GB1247409A (en) 1971-09-22

Family

ID=8505430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2382669A Expired GB1247409A (en) 1968-05-10 1969-05-09 Ignition device for discharge tubes

Country Status (4)

Country Link
DE (1) DE1923872A1 (en)
FI (1) FI41840B (en)
GB (1) GB1247409A (en)
NL (1) NL6907208A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2826128A1 (en) * 1977-06-20 1978-12-21 Gte Sylvania Inc ADAPTER FOR OPERATING A HIGH POWER DISCHARGE LAMP

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2183540B1 (en) * 1972-05-09 1976-01-16 Radiotechnique Compelec Fr

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2826128A1 (en) * 1977-06-20 1978-12-21 Gte Sylvania Inc ADAPTER FOR OPERATING A HIGH POWER DISCHARGE LAMP

Also Published As

Publication number Publication date
FI41840B (en) 1969-12-01
DE1923872A1 (en) 1969-12-11
NL6907208A (en) 1969-11-12

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