FR2753040A1 - Electronic starter for fluorescent lamp - Google Patents
Electronic starter for fluorescent lamp Download PDFInfo
- Publication number
- FR2753040A1 FR2753040A1 FR9610865A FR9610865A FR2753040A1 FR 2753040 A1 FR2753040 A1 FR 2753040A1 FR 9610865 A FR9610865 A FR 9610865A FR 9610865 A FR9610865 A FR 9610865A FR 2753040 A1 FR2753040 A1 FR 2753040A1
- Authority
- FR
- France
- Prior art keywords
- voltage
- tube
- capacitor
- terminals
- switch
- 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.)
- Withdrawn
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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
La présente invention concerne un dispositif pour l'allumage des tubes fluorescents de type à starter. The present invention relates to a device for lighting fluorescent tubes of the choke type.
L'allumage de ces tubes est traditionnellement effectué à l'aide d'un starter électromécanique occasionnant l'usure prématurée de celui-ci ainsi qu'un effet de clignotement gênant avant son allumage définitif. The ignition of these tubes is traditionally carried out using an electromechanical choke causing premature wear thereof and an annoying flashing effect before its final ignition.
Pour allumer un tube fluorescent à froid, le tube a besoin d'être amorcé avec une tension supérieure à la tension crête de la tension secteur, qui est d'environ 325 Volts. Le tube reste ensuite allumé grâce au maintien d'une tension nettement moins élevée. To light a cold fluorescent tube, the tube needs to be primed with a voltage higher than the peak voltage of the mains voltage, which is around 325 Volts. The tube then remains lit by maintaining a significantly lower voltage.
La tension d'amorçage est obtenue par une interruption brusque (grâce au starter électromécanique) du courant, traversant une self de choc. The ignition voltage is obtained by a sudden interruption (thanks to the electromechanical choke) of the current, passing through a shock inductor.
Ce même starter permet également le passage d'un courant à travers les filaments du tube afin d'obtenir le réchauffement de celui-ci.This same choke also allows the passage of a current through the filaments of the tube in order to obtain the heating thereof.
Le dispositif selon l'invention permet de remédier à ces inconvénients. Il comporte en effet,
selon une première caractéristique, un module électronique en lieu et place du starter électromécanique. La tension d'amorçage dudit starter est de 280 Volts, inférieure à la tension de crête du secteur.The device according to the invention overcomes these drawbacks. It indeed includes,
according to a first characteristic, an electronic module in place of the electromechanical choke. The ignition voltage of said starter is 280 volts, lower than the peak voltage of the sector.
Le dessin annexé illustre l'invention. The accompanying drawing illustrates the invention.
La figure 1 représente en plan, le dispositif de l'invention, dans son contexte.Figure 1 shows in plan, the device of the invention, in context.
La figure 2 représente en coupe, le dispositif de l'invention.Figure 2 shows in section, the device of the invention.
En référence à ces dessins, le dispositif dispose, lors de sa mise sous tension, de la totalité de la tension secteur aux bornes (1) et (2) du starter électronique. With reference to these drawings, the device has, when it is powered up, all of the mains voltage at the terminals (1) and (2) of the electronic choke.
Lorsque la polarité de cette tension se trouve dans le sens de conduction de la diode (3) et que la tension aux bornes (1) et (2) atteint celle de la tension d'amorçage de l'interrupteur électronique (4), ce dernier procède à une autorisation du passage du courant, qui passe alors dans la self (5) et les filaments (6). When the polarity of this voltage is in the direction of conduction of the diode (3) and that the voltage at the terminals (1) and (2) reaches that of the starting voltage of the electronic switch (4), this the latter authorizes the passage of the current, which then passes through the inductor (5) and the filaments (6).
Lors du changement de polarité de la tension, le courant positif circulant dans la self (5), baisse lentement grâce à l'établissement d'un champ magnétique créé par la polarité précédente. When changing the polarity of the voltage, the positive current flowing in the inductor (5) decreases slowly thanks to the establishment of a magnetic field created by the previous polarity.
Lorsque le courant atteint une valeur proche de zéro, I'interrupteur électronique (4) bloque, permettant une charge rapide du condensateur (7) et donc, I'application de la tension secteur négative aux bornes (8) et (9) du tube (10) de façon brutale. When the current reaches a value close to zero, the electronic switch (4) blocks, allowing rapid charging of the capacitor (7) and therefore, the application of the negative mains voltage to the terminals (8) and (9) of the tube. (10) brutally.
La cellule constituée par la self (5) et le condensateur (7) forme une boucle de résonance qui permet à la tension appliquée aux bornes (8) et (9) du tube (10), de monter très largement au dessus de la tension nominale du secteur. The cell formed by the inductor (5) and the capacitor (7) forms a resonance loop which allows the voltage applied to the terminals (8) and (9) of the tube (10), to rise very much above the voltage nominal of the sector.
L'interrupteur électronique (4) va se débloquer lors de la période positive suivante, permettant ainsi un nouveau cycle. The electronic switch (4) will be released during the next positive period, allowing a new cycle.
Au terme de quelques cycles, en fonction de la température ambiante, le tube (10) prend sa température de fonctionnement et reste allumé. After a few cycles, depending on the ambient temperature, the tube (10) takes its operating temperature and remains on.
De ce fait, la tension aux bornes (8) et (9) du tube (10) devient inférieure à la tension d'amorçage et le starter est mis automatiquement hors fonction. Therefore, the voltage at the terminals (8) and (9) of the tube (10) becomes lower than the ignition voltage and the choke is automatically deactivated.
Par le fait, le condensateur (7) devient antiparasite et diminue l'inductivité de la charge pour le secteur. In fact, the capacitor (7) becomes suppressor and reduces the inductivity of the load for the sector.
Le dispositif selon l'invention est particulièrement destiné à l'allumage des tubes fluorescents de type à starter. The device according to the invention is particularly intended for lighting fluorescent tubes of the choke type.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9610865A FR2753040A1 (en) | 1996-09-02 | 1996-09-02 | Electronic starter for fluorescent lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9610865A FR2753040A1 (en) | 1996-09-02 | 1996-09-02 | Electronic starter for fluorescent lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2753040A1 true FR2753040A1 (en) | 1998-03-06 |
Family
ID=9495494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9610865A Withdrawn FR2753040A1 (en) | 1996-09-02 | 1996-09-02 | Electronic starter for fluorescent lamp |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2753040A1 (en) |
-
1996
- 1996-09-02 FR FR9610865A patent/FR2753040A1/en not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |