FR2222823A2 - Method of firing a fluorescent tube - uses relaxation circuit and bilateral conducting element - Google Patents

Method of firing a fluorescent tube - uses relaxation circuit and bilateral conducting element

Info

Publication number
FR2222823A2
FR2222823A2 FR7310149A FR7310149A FR2222823A2 FR 2222823 A2 FR2222823 A2 FR 2222823A2 FR 7310149 A FR7310149 A FR 7310149A FR 7310149 A FR7310149 A FR 7310149A FR 2222823 A2 FR2222823 A2 FR 2222823A2
Authority
FR
France
Prior art keywords
circuit
conducting element
fluorescent tube
transistor
relaxation circuit
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.)
Granted
Application number
FR7310149A
Other languages
French (fr)
Other versions
FR2222823B2 (en
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.)
Radiotechnique Compelec RTC SA
Original Assignee
Radiotechnique Compelec RTC SA
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 Radiotechnique Compelec RTC SA filed Critical Radiotechnique Compelec RTC SA
Priority to FR7310149A priority Critical patent/FR2222823A2/en
Priority to CA170,370A priority patent/CA1026817A/en
Priority to GB2132973A priority patent/GB1418080A/en
Priority to DK248173AA priority patent/DK134540B/en
Priority to NL7306303A priority patent/NL7306303A/xx
Priority to US357622A priority patent/US3875459A/en
Priority to CH644173A priority patent/CH569399A5/xx
Priority to SE7306358A priority patent/SE383246B/en
Priority to ES414478A priority patent/ES414478A1/en
Priority to IT68274/73A priority patent/IT985863B/en
Priority to AT404373A priority patent/AT350664B/en
Priority to JP48050364A priority patent/JPS5815918B2/en
Priority to DE2323011A priority patent/DE2323011C3/en
Priority to AR247911A priority patent/AR200868A1/en
Publication of FR2222823A2 publication Critical patent/FR2222823A2/en
Application granted granted Critical
Publication of FR2222823B2 publication Critical patent/FR2222823B2/fr
Granted 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
    • H05B41/044—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes
    • H05B41/046—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes using controlled semiconductor devices

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

A fluorescent tube is fired using a transistor interrupter. During each supply half cycle the current in the ballast inductance and tube filaments is interrupted a large number of times. The base of the transistor is controlled by a relaxation circuit connected across a bilateral conducting element. The relaxation circuit which determines the interruption frequency, is neutralized as soon as voltage is applied to the starter, so as to bring the transistor interrupter into saturation. A circuit with a relatively long time constant controls a switch connected in series with the relaxation circuit. Neutralization ceasing at the end of a period governed by the timing circuit.
FR7310149A 1972-05-09 1973-03-21 Method of firing a fluorescent tube - uses relaxation circuit and bilateral conducting element Granted FR2222823A2 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
FR7310149A FR2222823A2 (en) 1973-03-21 1973-03-21 Method of firing a fluorescent tube - uses relaxation circuit and bilateral conducting element
CA170,370A CA1026817A (en) 1972-05-09 1973-05-03 Electrical circuit for igniting and supplying a discharge lamp
GB2132973A GB1418080A (en) 1972-05-09 1973-05-04 Starter switch for a discharge-lamp
DK248173AA DK134540B (en) 1972-05-09 1973-05-04 Coupling for ignition and supply of gas discharge pipes.
NL7306303A NL7306303A (en) 1972-05-09 1973-05-05
CH644173A CH569399A5 (en) 1972-05-09 1973-05-07
US357622A US3875459A (en) 1972-05-09 1973-05-07 Arrangement for igniting and supplying a discharge lamp
SE7306358A SE383246B (en) 1972-05-09 1973-05-07 DEVICE FOR LIGHTING AND SUPPLYING A URL CHARGING LAMP.
ES414478A ES414478A1 (en) 1972-05-09 1973-05-07 Arrangement for igniting and supplying a discharge lamp
IT68274/73A IT985863B (en) 1972-05-09 1973-05-07 DEVICE FOR IGNITION AND POWER SUPPLY FOR ELECTRIC DISCHARGE LAMPS
AT404373A AT350664B (en) 1972-05-09 1973-05-08 DEVICE FOR IGNITING AND SUPPLYING A DISCHARGE LAMP
JP48050364A JPS5815918B2 (en) 1972-05-09 1973-05-08 HOMEMAN TENKOKIYUDENSOCHI
DE2323011A DE2323011C3 (en) 1972-05-09 1973-05-08 Circuit arrangement for the ignition and operation of a gas discharge lamp
AR247911A AR200868A1 (en) 1972-05-09 1973-05-08 ARRANGEMENT FOR LIGHTING AND POWERING A DISCHARGE LAMP

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7310149A FR2222823A2 (en) 1973-03-21 1973-03-21 Method of firing a fluorescent tube - uses relaxation circuit and bilateral conducting element

Publications (2)

Publication Number Publication Date
FR2222823A2 true FR2222823A2 (en) 1974-10-18
FR2222823B2 FR2222823B2 (en) 1976-11-05

Family

ID=9116642

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7310149A Granted FR2222823A2 (en) 1972-05-09 1973-03-21 Method of firing a fluorescent tube - uses relaxation circuit and bilateral conducting element

Country Status (1)

Country Link
FR (1) FR2222823A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021508A1 (en) * 1979-06-15 1981-01-07 Philips Patentverwaltung GmbH Firing and operating circuit arrangement for gas and/or vapour discharge lamps
WO1983002871A1 (en) * 1982-02-03 1983-08-18 Pra Jean-Marie De Ignition device for discharge lamps

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021508A1 (en) * 1979-06-15 1981-01-07 Philips Patentverwaltung GmbH Firing and operating circuit arrangement for gas and/or vapour discharge lamps
WO1983002871A1 (en) * 1982-02-03 1983-08-18 Pra Jean-Marie De Ignition device for discharge lamps
EP0105042A1 (en) * 1982-02-03 1984-04-04 Jean-Marie De Pra Starter device for discharge lamps

Also Published As

Publication number Publication date
FR2222823B2 (en) 1976-11-05

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