GB1211706A - Discharge-lamp starting circuit - Google Patents

Discharge-lamp starting circuit

Info

Publication number
GB1211706A
GB1211706A GB853767A GB853767A GB1211706A GB 1211706 A GB1211706 A GB 1211706A GB 853767 A GB853767 A GB 853767A GB 853767 A GB853767 A GB 853767A GB 1211706 A GB1211706 A GB 1211706A
Authority
GB
United Kingdom
Prior art keywords
switch
lamp
current
glow
discharge
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
GB853767A
Inventor
Donald Frederick Chapman
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.)
Thorn Lighting Ltd
Original Assignee
Thorn Lighting 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 Thorn Lighting Ltd filed Critical Thorn Lighting Ltd
Priority to GB853767A priority Critical patent/GB1211706A/en
Priority to DE19681639133 priority patent/DE1639133B1/en
Priority to SE220368A priority patent/SE345369B/xx
Priority to NL6802505A priority patent/NL6802505A/xx
Priority to FR1557998D priority patent/FR1557998A/fr
Publication of GB1211706A publication Critical patent/GB1211706A/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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1,211,706. Supply systems for discharge lamps. THORN LIGHTING Ltd. 23 Jan., 1968 [22 Feb., 19671, No. 8537/67. Heading H2H. A high pressure sodium lamp 10 is supplied by the circuit arrangement shown, in which a conventional ballast choke 11 has a tapping 14 connected to a series circuit whose main components are a capacitor 15, a normally-open glow switch 17 and a normally-closed thermal switch 19 whose heater 20 carries the lamp operating current. When A.C. is applied to terminals 12, 13 the glow discharge in switch 17 causes its contacts to close and allow the flow of charging current for the capacitor 15, which current generates a voltage pulse across the choke 11 to start the lamp. Consequent current flow through the lamp and heater 20 opens the switch 19 to disconnect the glow switch 17. If the lamp does not start at the first voltage pulse, the switch 17 repeatedly opens and closes to generate a succession of random starting pulses. Resistor 16 limits the charging current and capacitors 18, 21 respectively provide radio interference suppression and power factor correction.
GB853767A 1967-02-22 1967-02-22 Discharge-lamp starting circuit Expired GB1211706A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB853767A GB1211706A (en) 1967-02-22 1967-02-22 Discharge-lamp starting circuit
DE19681639133 DE1639133B1 (en) 1967-02-22 1968-02-17 GAS DISCHARGE LAMP STARTING CIRCUIT
SE220368A SE345369B (en) 1967-02-22 1968-02-20
NL6802505A NL6802505A (en) 1967-02-22 1968-02-21
FR1557998D FR1557998A (en) 1967-02-22 1968-02-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB853767A GB1211706A (en) 1967-02-22 1967-02-22 Discharge-lamp starting circuit

Publications (1)

Publication Number Publication Date
GB1211706A true GB1211706A (en) 1970-11-11

Family

ID=9854357

Family Applications (1)

Application Number Title Priority Date Filing Date
GB853767A Expired GB1211706A (en) 1967-02-22 1967-02-22 Discharge-lamp starting circuit

Country Status (5)

Country Link
DE (1) DE1639133B1 (en)
FR (1) FR1557998A (en)
GB (1) GB1211706A (en)
NL (1) NL6802505A (en)
SE (1) SE345369B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406534C2 (en) * 1993-06-11 1998-10-29 Tridonic Bauelemente Ignitor for cold start discharge lamps

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE762988C (en) * 1940-06-19 1953-09-07 Patra Patent Treuhand Ignition and operating device for electrical gas or vapor-filled discharge tubes
US2797365A (en) * 1954-08-06 1957-06-25 Siemens Brothers & Co Ltd Circuit arrangement for starting and operating hot-cathode electric discharge lamp
US2940009A (en) * 1955-10-18 1960-06-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Starting and operating device for electric discharge lamp
US3275875A (en) * 1962-12-27 1966-09-27 Gen Electric Spark tube having activated thermionic electrodes

Also Published As

Publication number Publication date
NL6802505A (en) 1968-08-23
FR1557998A (en) 1969-02-21
DE1639133B1 (en) 1971-06-09
SE345369B (en) 1972-05-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee