EP0051537A1 - Discharge lamp starter - Google Patents

Discharge lamp starter Download PDF

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Publication number
EP0051537A1
EP0051537A1 EP81401728A EP81401728A EP0051537A1 EP 0051537 A1 EP0051537 A1 EP 0051537A1 EP 81401728 A EP81401728 A EP 81401728A EP 81401728 A EP81401728 A EP 81401728A EP 0051537 A1 EP0051537 A1 EP 0051537A1
Authority
EP
European Patent Office
Prior art keywords
triac
resistor
series
discharge lamp
lamp
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Withdrawn
Application number
EP81401728A
Other languages
German (de)
French (fr)
Inventor
Gian Franco Merli
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.)
CLAUDE SA
Original Assignee
CLAUDE 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 CLAUDE SA filed Critical CLAUDE SA
Publication of EP0051537A1 publication Critical patent/EP0051537A1/en
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to high power discharge lamps, in particular iodide lamps of 2000 Watts, and, more particularly, the ignition circuit necessary to operate such a lamp.
  • the initiators for discharge lamps can be produced in different ways. Since the lamp is generally connected in series with an induction coil, the latter can, for example, be provided with an intermediate plug and be connected so as to constitute a voltage step-up auto-transformer thus making it possible to increase the voltage. applied to the lamp terminals.
  • Such an auto-transformer is an expensive, heavy and bulky component.
  • such a circuit may not function properly if it is disposed at a distance substantially distant from the lamp which it controls.
  • This electronic initiator includes a thyristor, the ignition angle of which varies as a function of the network voltage.
  • this igniter generates large transient currents before delivering the required ignition pulse and thereby unnecessarily consumes a certain power.
  • the initiator must deliver a voltage pulse whose peak value is at least equal to 1100 Volts and the duration, measured at 900 Volts, is greater than 100 us .
  • the subject of the present invention is an electronic initiator having the required characteristics and making it possible to obviate the aforementioned drawbacks, while being simple and inexpensive to produce in series and nevertheless having increased reliability compared with known initiators.
  • the initiator which is arranged in parallel with the lempe which it controls, comprises a capacitor connected in series with a triac, and a branch including in series a first resistor, a zener diode and a second resistor, this branch being connected between the junction point of the capacitor and the triac, and one of the terminals of the voltage source.
  • the triac control circuit is connected to the junction point of the second resistor and the zener diode, and includes a diac.
  • the single Figure shows the electrical diagram of an initiator according to the present invention.
  • the discharge lamp 1 is connected in series to an induction coil 2, the assembly being connected to the terminals of an alternating voltage source delivering for example 380 volts.
  • the igniter 3 is arranged in parallel with the discharge lamp 1. It comprises a capacitor 4 in series with a triac 5.
  • the triac 5 control circuit is connected to the junction point of the second resistor 9 and the zener diode 8. It comprises a diac 11 and a capacitor 12, the latter being arranged in parallel with the resistor 9.
  • the zener diode 8 makes it possible to directly control the opening angle of the triac 5.
  • the zener diode 8 can advantageously be replaced by several zener diodes, in particular three, connected in series.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention concerne un amorceur électronique pour lampe à décharge de puissance élevée, notamment les lampes à iodure de 2000 Watts. Selon l'invention, l'amorceur (3) est disposé en parallèle avec la lampe (1) entre les bornes d'une source de tension alternative (10) par l'intermédiaire d'une bobine d'induction (2). Il comprend en combinaison: - un condensateur (4) en série avec un triac (5), - une branche incluant en série une première résistance (7), une diode zener (8) et une seconde résistance (9), et - un circuit de commande du triac (5) incluant un diac (11). Application à l'éclairage.The invention relates to an electronic igniter for a high power discharge lamp, in particular iodide lamps of 2000 Watts. According to the invention, the initiator (3) is arranged in parallel with the lamp (1) between the terminals of an alternating voltage source (10) by means of an induction coil (2). It comprises in combination: - a capacitor (4) in series with a triac (5), - a branch including in series a first resistor (7), a zener diode (8) and a second resistor (9), and - a triac control circuit (5) including a diac (11). Application to lighting.

Description

L'invention concerne les lampes à décharge de puissance élevée, notamment les lampes à iodure de 2000 Watts, et, plus particulièrement, le circuit d'amorçage nécessaire pour faire fonctionner une telle lampe.The invention relates to high power discharge lamps, in particular iodide lamps of 2000 Watts, and, more particularly, the ignition circuit necessary to operate such a lamp.

Les amorceurs pour lampes à décharge peuvent être réalisés de différentes manières. Puisque la lampe est généralement reliée en série avec une bobine d'induction, cette dernière peut, par exemple, être pourvue d'une prise intermédiaire et être connectée de manière à constituer un auto-transformateur élévateur de tension permettant ainsi d'augmenter la tension appliquée aux bornes de la lampe.The initiators for discharge lamps can be produced in different ways. Since the lamp is generally connected in series with an induction coil, the latter can, for example, be provided with an intermediate plug and be connected so as to constitute a voltage step-up auto-transformer thus making it possible to increase the voltage. applied to the lamp terminals.

Toutefois, un tel auto-transformateur est un composant coûteux, lourd et encombrant. En outre, un tel circuit peut ne pas fonctionner convenablement s'il est disposé à une distance sensiblement éloignée de la lampe qu'il commande.However, such an auto-transformer is an expensive, heavy and bulky component. In addition, such a circuit may not function properly if it is disposed at a distance substantially distant from the lamp which it controls.

Un autre type d'amorceur est décrit, par exemple, dans le brevet français 2 280 289. Cet amorceur électronique inclut un thyristor dont l'angle d'amorçage varie en fonction de la tension du réseau. Toutefois, cet amorceur engendre des courants transitoires importants avant de délivrer l'impulsion d'amorçage requise et consomme de ce fait inutilement une certaine puissance.Another type of initiator is described, for example, in French patent 2,280,289. This electronic initiator includes a thyristor, the ignition angle of which varies as a function of the network voltage. However, this igniter generates large transient currents before delivering the required ignition pulse and thereby unnecessarily consumes a certain power.

On sait que pour une lampe à décharge de 2000 Watts de puissance environ, l'amorceur doit délivrer une impulsion de tension dont la valeur de crête est au moins égale à 1100 Volts et la durée, mesurée à 900 Volts, est supérieure à 100 us.We know that for a discharge lamp of approximately 2000 Watts of power, the initiator must deliver a voltage pulse whose peak value is at least equal to 1100 Volts and the duration, measured at 900 Volts, is greater than 100 us .

La présente invention a pour objet un amorceur électronique ayant les caractéristiques requises et permettant d'obvier aux inconvénients précités, tout en étant simple et peu co0teux à réaliser en série et présentant cependant une fiabilité accrue par rapport aux amorceurs connus.The subject of the present invention is an electronic initiator having the required characteristics and making it possible to obviate the aforementioned drawbacks, while being simple and inexpensive to produce in series and nevertheless having increased reliability compared with known initiators.

Selon l'invention, l'amorceur qui est disposé en parallèle avec la lempe qu'il commande, comprend un condensateur relié en série avec un triac, et une branche incluant en série une première résistance, une diode zener et une seconde résistance, cette branche étant reliée entre le point de jonction du condensateur et du triac, et l'une des bornes de la source de tension. Le circuit de commande du triac est connecté au point de jonction de la seconde résistance et de la diode zener, et inclut un diac.According to the invention, the initiator which is arranged in parallel with the lempe which it controls, comprises a capacitor connected in series with a triac, and a branch including in series a first resistor, a zener diode and a second resistor, this branch being connected between the junction point of the capacitor and the triac, and one of the terminals of the voltage source. The triac control circuit is connected to the junction point of the second resistor and the zener diode, and includes a diac.

L'invention sera mieux comprise et d'autres buts, avantages et caractéristiques de celle-ci apparaîtront plus clairement à la lecture de la description qui suit d'un mode de réalisation de l'invention donné à titre non limitatif et à laquelle une planche de dessin est annexée.The invention will be better understood and other objects, advantages and characteristics thereof will appear more clearly on reading the following description of an embodiment of the invention given without limitation and in which a board drawing is attached.

La Figure unique représente le schéma électrique d'un amorceur conforme à la présente invention.The single Figure shows the electrical diagram of an initiator according to the present invention.

En référence maintenant à cette figure unique, la lampe à décharge 1 est reliée en série à une bobine d'induction 2, l'ensemble étant connecté aux bornes d'une source de tension alternative délivrant par exemple 380 Volts.Referring now to this single figure, the discharge lamp 1 is connected in series to an induction coil 2, the assembly being connected to the terminals of an alternating voltage source delivering for example 380 volts.

L'amorceur 3 est disposé en parallèle avec la lampe à décharge 1. Il comprend un condensateur 4 en série avec un triac 5. Une branche incluant en série une première résistance 7, une diode zener 6 et une seconde résistance 9, relie le point de jonction 6 du condensateur 4 et du triac 5 à l'une des bornes de la source 10.The igniter 3 is arranged in parallel with the discharge lamp 1. It comprises a capacitor 4 in series with a triac 5. A branch including in series a first resistor 7, a zener diode 6 and a second resistor 9, connects the point junction 6 of the capacitor 4 and the triac 5 at one of the terminals of the source 10.

Le circuit de commande du triac 5 est relié au point de jonction de la seconde résistance 9 et de la diode zener 8. Il comprend un diac 11 et un condensateur 12, ce dernier étant disposé en parallèle avec la résistance 9.The triac 5 control circuit is connected to the junction point of the second resistor 9 and the zener diode 8. It comprises a diac 11 and a capacitor 12, the latter being arranged in parallel with the resistor 9.

Le fonctionnement de l'amorceur 3 est le suivant:

  • Si, par hypothèse, la lampe 1 est éteinte lorsque l'ensemble est branché aux bornes de la source de tension 10, le triac 5 devient passant dès que la tension aux bornes du diac 11 est supérieure à la tension requise (32 Volts), grâce à la branche 7, 8, 9 formant pont diviseur. Le condensateur 4 se charge alors pendant une alternance de la tension délivrée par la source 10. A l'alternance suivante, le condensateur 4 se décharge et, du fait de la bobine 2, une impulsion de haute tension est appliquée à la lampe 1. Cette impulsion a une amplitude suffisante pour amorcer l'arc électrique dans la lampe à décharge 1.
The operation of the initiator 3 is as follows:
  • If, by hypothesis, the lamp 1 is extinguished when the assembly is connected to the terminals of the voltage source 10, the triac 5 becomes conducting as soon as the voltage across the terminals of the diac 11 is greater than the required voltage (32 Volts), thanks to the branch 7, 8, 9 forming a dividing bridge. The capacitor 4 then charges during an alternation of the voltage delivered by the source 10. At the next alternation, the capacitor 4 discharges and, due to the coil 2, a high voltage pulse is applied to the lamp 1. This pulse has a sufficient amplitude to strike the electric arc in the discharge lamp 1.

Lorsque l'arc est amorcé, la tension aux bornes de l'amorceur 3 tombe à une valeur insuffisante pour déclencher le diac 11, et le triac 5 constitue alors un circuit ouvert.When the arc is struck, the voltage across the initiator 3 drops to a value insufficient to trigger the diac 11, and the triac 5 then constitutes an open circuit.

Comme on peut aisément le constater, la diode zener 8 permet de commander directement l'angle d'ouverture du triac 5.As can easily be seen, the zener diode 8 makes it possible to directly control the opening angle of the triac 5.

Bien que seul un mode de réalisation de l'invention ait été décrit, il est évident que toute modification apportée par l'Homme de l'Art dans le même esprit ne sortirait pas du cadre de la présente invention. Par exemple, la diode zener 8 peut être avantageusement remplacée par plusieurs diodes zener, notamment trois, reliées en série.Although only one embodiment of the invention has been described, it is obvious that any modification made by those skilled in the art in the same spirit would not depart from the scope of the present invention. For example, the zener diode 8 can advantageously be replaced by several zener diodes, in particular three, connected in series.

Claims (2)

Amorceur électronique pour lampe à décharge de puissance élevée, disposé en parallèle avec la dite lampe et relié à une source de tension alternative par l'intermédiaire d'une bobine d'induction, caractérisé en ce qu'il comprend, en combinaison:Electronic igniter for high power discharge lamp, arranged in parallel with said lamp and connected to an alternating voltage source by means of an induction coil, characterized in that it comprises, in combination: - un condensateur (4) en série avec un triac (5),- a capacitor (4) in series with a triac (5), - une branche incluant en série une première résistance (7), une diode zener (8) et une seconde résistance (9), reliée entre le point de jonction (6) du dit condensateur (4) et du triac (5) et l'une des bornes de la dite source (10), et- a branch including in series a first resistor (7), a zener diode (8) and a second resistor (9), connected between the junction point (6) of said capacitor (4) and the triac (5) and l one of the terminals of said source (10), and - un circuit de commande du dit triac (5) incluant un diac (11), relié entre le point de jonction de la dite seconde résistance (9) et de la dite diode zener (8).- a control circuit of said triac (5) including a diac (11), connected between the junction point of said second resistor (9) and said zener diode (8).
EP81401728A 1980-10-30 1981-10-28 Discharge lamp starter Withdrawn EP0051537A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8023210A FR2493598A1 (en) 1980-10-30 1980-10-30 INITIATOR FOR DISCHARGE LAMP
FR8023210 1980-10-30

Publications (1)

Publication Number Publication Date
EP0051537A1 true EP0051537A1 (en) 1982-05-12

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ID=9247498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401728A Withdrawn EP0051537A1 (en) 1980-10-30 1981-10-28 Discharge lamp starter

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US (1) US4355264A (en)
EP (1) EP0051537A1 (en)
FR (1) FR2493598A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513227A (en) * 1983-01-10 1985-04-23 Gte Products Corporation High intensity discharge (HID) lamp starting apparatus
US5118994A (en) * 1990-05-25 1992-06-02 Gte Laboratories Incorporated Method and circuit for improved hid lamp maintenance
US5955847A (en) * 1994-06-10 1999-09-21 Beacon Light Products, Inc. Method for dimming a fluorescent lamp
US5537010A (en) * 1994-06-10 1996-07-16 Beacon Light Products, Inc. Voltage-comparator, solid-state, current-switch starter for fluorescent lamp
US5861721A (en) * 1996-11-25 1999-01-19 Beacon Light Products, Inc. Smooth switching module
US5861720A (en) * 1996-11-25 1999-01-19 Beacon Light Products, Inc. Smooth switching power control circuit and method
CA2300351A1 (en) * 1999-04-21 2000-10-21 Eric Ngo Fluorescent lamp ballast combined with electronic starter and resonant capacitor for reducing input current
ITRM20100028A1 (en) * 2010-01-27 2011-07-28 Gmm Tecnologia S R L "INNOVATIVE STARTER FOR FLUORESCENT LAMPS"

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2023444A1 (en) * 1969-11-15 1970-08-21 Tokai Rika Co Ltd
GB1598546A (en) * 1976-12-20 1981-09-23 Sword Lighting & Dev Ltd Discharge lamp starter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL161962C (en) * 1969-03-22 1980-03-17 Philips Nv CIRCUIT FOR IGNITION AND AC POWERED GAS AND / OR VAPOR DISCHARGE LAMP.
FR2280289A1 (en) * 1974-07-26 1976-02-20 Lampes Sa Firing circuit for discharge lamp - has thyristor circuit in series with capacitor as dipole
GB1593544A (en) * 1977-06-27 1981-07-15 Gen Electric Co Ltd Circuits for operating electric discharge lamps

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2023444A1 (en) * 1969-11-15 1970-08-21 Tokai Rika Co Ltd
GB1598546A (en) * 1976-12-20 1981-09-23 Sword Lighting & Dev Ltd Discharge lamp starter

Also Published As

Publication number Publication date
US4355264A (en) 1982-10-19
FR2493598B1 (en) 1985-02-22
FR2493598A1 (en) 1982-05-07

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19820817

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Effective date: 19841030

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Inventor name: FRANCO MERLI, GIAN