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ATE151586T1 - ELECTRONIC STARTER FOR FLUORESCENCE LAMPS - Google Patents

ELECTRONIC STARTER FOR FLUORESCENCE LAMPS

Info

Publication number
ATE151586T1
ATE151586T1 AT93100602T AT93100602T ATE151586T1 AT E151586 T1 ATE151586 T1 AT E151586T1 AT 93100602 T AT93100602 T AT 93100602T AT 93100602 T AT93100602 T AT 93100602T AT E151586 T1 ATE151586 T1 AT E151586T1
Authority
AT
Austria
Prior art keywords
lamp
switch
supply voltage
power supply
started
Prior art date
Application number
AT93100602T
Other languages
German (de)
Inventor
Peter Horn
Original Assignee
Knobel Lichttech
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 Knobel Lichttech filed Critical Knobel Lichttech
Application granted granted Critical
Publication of ATE151586T1 publication Critical patent/ATE151586T1/en

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)
  • Electroluminescent Light Sources (AREA)

Abstract

In the lamp circuit with the lamp (1), the inductor (L) and the capacitor (C), the starter is provided with a rectifier (2), a switch (TH1) and switching elements (C2, TH2) for controlling the switch into the off state, as a result of which the lamp is started. A zener diode (ZD1) results in the control input of the switch (TH1) being switched off when the power supply voltage is low, in the case of which low power supply voltage the lamp (1) cannot yet reliably be started, as a result of which the pre-heating phase and starting of the lamp are not made possible until the power supply voltage is approximately three quarters of the nominal supply voltage. Furthermore, the chopping current value at which the pre-heating current is interrupted is limited by a pulse circuit (R6, R7, TH3). This results in reliable starting of the lamp and ensures that the switch (TH1) is not destroyed even if the ballast has a high inductance level. <IMAGE>
AT93100602T 1992-01-24 1993-01-16 ELECTRONIC STARTER FOR FLUORESCENCE LAMPS ATE151586T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH19392 1992-01-24

Publications (1)

Publication Number Publication Date
ATE151586T1 true ATE151586T1 (en) 1997-04-15

Family

ID=4181376

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93100602T ATE151586T1 (en) 1992-01-24 1993-01-16 ELECTRONIC STARTER FOR FLUORESCENCE LAMPS

Country Status (3)

Country Link
EP (1) EP0552687B1 (en)
AT (1) ATE151586T1 (en)
DE (1) DE59306071D1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194400B (en) * 1986-08-04 1991-04-17 Transtar Ltd Starter and discharge lamp including it
GB8703284D0 (en) * 1987-02-12 1987-03-18 Martin D J Electronic starter for fluorescent lamps
GB8806384D0 (en) * 1988-03-17 1988-04-13 Emi Plc Thorn Starter circuits for discharge lamps
CH681263A5 (en) * 1990-08-16 1993-02-15 Knobel Lichttech

Also Published As

Publication number Publication date
EP0552687A1 (en) 1993-07-28
DE59306071D1 (en) 1997-05-15
EP0552687B1 (en) 1997-04-09

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