EP0811306B1 - Zündvorrichtung für eine hochdruck-gasentladungslampe - Google Patents
Zündvorrichtung für eine hochdruck-gasentladungslampe Download PDFInfo
- Publication number
- EP0811306B1 EP0811306B1 EP96945836A EP96945836A EP0811306B1 EP 0811306 B1 EP0811306 B1 EP 0811306B1 EP 96945836 A EP96945836 A EP 96945836A EP 96945836 A EP96945836 A EP 96945836A EP 0811306 B1 EP0811306 B1 EP 0811306B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- capacitor
- voltage
- starting device
- pressure gas
- discharge 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.)
- Expired - Lifetime
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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
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
-
- 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 an ignition device for a High pressure gas discharge lamp, especially for use in Headlights of motor vehicles, which in the preamble of Claim 1 defined genus.
- an ignition transformer is provided, the primary winding of which a voltage is supplied.
- the secondary winding transforms this voltage up to the voltage required to ignite the lamp.
- a capacitor is arranged on the primary side in parallel with the series connection of the primary winding and a controllable switch, which is formed, for example, by a thyristor. This capacitor is charged for ignition to an effective voltage which is then present at this point in time. When a certain voltage is reached, the controllable switch is turned on and the capacitor is discharged to deliver the ignition pulse.
- the ignition device according to the invention for a high-pressure gas discharge lamp with the characteristic features of the Claim 1 has the advantage of improving the Takeover behavior, because in the critical area of takeover High pressure gas discharge lamp from ignition mode to burning mode Energy can be replenished.
- this is so that the staggered according to the invention Capacitor discharge does not cause the entire ignition energy to be high Voltage level must be made available. This is economic use of space is possible when using cheaper and smaller components. This leads to both Space and cost savings.
- this is achieved according to the invention in that a second capacitor in series with the capacitor a diode is provided that this second capacitor a lower voltage can be charged than the first capacitor, and that this second capacitor then on the corresponding polarized diode and the switched controllable switch in the primary winding will discharge when its voltage is greater than that of the first capacitor at its Discharge.
- the capacity of the second capacitor about 2 to 5 times the capacity of the first capacitor.
- this is the first Capacitor charging voltage greater, preferably about 2- up to 5 times as large as that charging the second capacitor Tension.
- the invention can be divided into two particularly advantageous ones Realize designs.
- One is that the first capacitor from a separately supplied voltage is rechargeable. This can also be called the 3-wire concept describe.
- the other, which can be described as a 2-wire concept is that the second capacitor from an internal obtained voltage is rechargeable, which is preferably around the Voltage difference of a Zener diode is less than that Voltage with which the first capacitor can be charged.
- resistors in series with the two capacitors are provided, with the help of the time constants of the charging of the capacitors, taking into account the energy required to ignite the high-pressure gas discharge lamp and its Transition to burning mode is necessary, so are selectable that the desired voltage is then reached at the second capacitor is when the controllable switch closes.
- controllable Switch a spark gap, which when reaching a certain voltage switches through.
- Voltage limiting element e.g. B. a varistor provided.
- a high-pressure gas discharge lamp 10 is connected on one side via a secondary winding 16 of an ignition transformer 14 to a first connecting line 11 of a power supply circuit, not shown in detail.
- the high-pressure gas discharge lamp 10 is connected on its second side to a second connecting line 12 of the power supply circuit.
- a first voltage U 1 is present between the connecting lines 11 and 12.
- a third connecting line 13 supplies a further voltage U 2 between the connections 11 and 13. Via these three connecting lines, the high-pressure gas discharge lamp 10 is supplied with both combustion and ignition energy.
- the ignition energy is applied by the ignition device designed according to the invention with the aid of a pulse.
- the ignition transformer 14 is provided with a primary winding 15 and the secondary winding 16, which are closely coupled to one another.
- a spark gap 17 is provided as an inexpensive controllable switch which suddenly becomes conductive when the breakdown voltage is reached, thus generating the ignition pulse and allowing the current to flow through the primary winding 15.
- a first capacitor 18 is arranged in parallel with the series connection of primary winding 15 and spark gap 17. This first capacitor 18 is connected in series with a resistor 20 between the connecting lines 11 and 13 and is thus charged by the voltage U 2 .
- the series connection of a second capacitor 19 and a diode 22 is provided in parallel with the first capacitor 18.
- connection point of the capacitor 19 and the diode 22 is connected to the connecting line 12 via a resistor 21.
- This second capacitor 19 is therefore in series with the resistor 21 between the connecting lines 11 and 12 and is thus charged by the voltage U 1 .
- the diode 22 is poled so that its anode is connected to the connection point of the second capacitor 19 and the resistor 21, and that its cathode is connected to the connection point of the first capacitor 18 and the resistor 20, as well as the one connection of the spark gap 17 .
- a varistor 23 is arranged between the connecting lines 11 and 12.
- the mode of operation of the above-described embodiment of the ignition device designed according to the invention is as follows.
- the first capacitor 18 is charged via the resistor 20 until the spark gap 17 breaks down via the voltage U 2 present at the connecting line 13, which is only used during the ignition and can therefore be referred to as auxiliary voltage.
- the voltage U 1 present between the connecting lines 11 and 12, which supplies the take-over voltage and later the operating voltage of the high-pressure gas discharge lamp 10, charges the second capacitor 19 via the resistor 21.
- the voltage U 2 is always greater than the voltage U 1 .
- An advantageous ratio for the voltages provides that U 2 is approximately 2 to 5 times as large as the voltage U 1 . As a result, the diode 22 is blocked.
- the dimensioning of the capacitors which is carried out from the energy point of view, is taken into account.
- the energy required after the high-pressure gas discharge lamp 10 has broken down during the transition from the ignition of the arc to the burning mode is thus replenished according to the invention by the staggered capacitor discharge to a substantially lower voltage level.
- FIG. 2 shows a second exemplary embodiment of the ignition device designed according to the invention, which is constructed according to the so-called 2-conductor concept.
- a high-pressure gas discharge lamp 210 is connected on one side via a secondary winding 216 of an ignition transformer 214 to a first connecting line 211 of a power supply circuit, not shown in detail.
- the high-pressure gas discharge lamp 210 is connected on its second side to a second connecting line 212 of the power supply circuit.
- a voltage U 1 is present between the connecting lines 211 and 212.
- the high-pressure gas discharge lamp 210 is supplied with both combustion and ignition energy via these two connection lines.
- the ignition energy is applied by the ignition device designed according to the invention with the aid of a pulse.
- the ignition transformer 214 is provided with a primary winding 215 and the secondary winding 216, which are closely coupled to one another.
- a spark gap 217 is provided as a controllable switch which suddenly becomes conductive when the breakdown voltage is reached, thus generating the ignition pulse and permitting the current to flow through the primary winding 215.
- a first capacitor 218 is arranged in parallel with the series connection of primary winding 215 and spark gap 217. This first capacitor 218 is connected in series with a resistor 220 between the connecting lines 211 and 212 and is thus charged by the voltage U 1 .
- the series connection of a second capacitor 219 and a diode 222 is provided in parallel with the first capacitor 218.
- the connection point of capacitor 219 and diode 222 is connected to the connecting line 212 via the series connection of a resistor 224 and a Zener diode 225 and the resistor 220.
- U 2 At the connection point of this second capacitor 219 with the diode 222, there is an internally generated voltage U 2 which is lower than the voltage U 1 by the voltage of the Zener diode 225.
- Diode 222 is polarized so that its anode is connected to the junction of second capacitor 219 and resistor 224, and its cathode is connected to the junction of first capacitor 218 and resistor 220, and one connection of spark gap 217 .
- a voltage limiting element 223, for. B. a varistor arranged.
- the mode of operation of the above-described second embodiment of the ignition device designed according to the invention is as follows, only the one deviating from the first embodiment being described here.
- the second capacitor 219 is charged to the voltage level U C2 with the aid of part of the voltage U 1 , the internally generated voltage U 2 . This arises by subtracting the breakdown voltage of the Zener diode 225 from the voltage U 1 .
- the dimensioning of the capacitors 218 and 219 which is carried out from the point of view of energy, is taken into account. Furthermore, it is expedient to select the capacitance of the second capacitor 219 approximately 2 to 5 times as large as the capacitance of the first capacitor 218.
- the value of resistor 224 can also be zero under certain circumstances.
- Ignitor does not use all of the ignition energy at high Voltage level can be provided.
- the staggered Capacitor discharge makes economical use of space possible. Furthermore, the use is cheaper Capacitors allows as well as an improvement in Takeover behavior achieved. In the critical area of the takeover the high-pressure gas discharge lamp from ignition to burning mode can have enough energy at low voltage levels be pushed.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
Auf der Primärseite ist ein Kondensator parallel zu der Reihenschaltung der Primärwicklung und eines steuerbaren Schalters, der beispielsweise durch einen Thyristor gebildet wird, angeordnet. Dieser Kondensator wird zum Zünden auf eine zu diesem Zeitpunkt dann anliegende und wirksame Spannung aufgeladen. Bei Erreichen einer bestimmten Spannung wird der steuerbare Schalter durchgeschaltet und der Kondensator zur Abgabe des Zündimpulses entladen.
- Fig. 1
- ein erstes Ausführungsbeispiel der erfindungsgemäß gestalteten Zündvorrichtung nach dem 3-Leiterkonzept, und
- Fig. 2
- ein zweites Ausführungsbeispiel der erfindungsgemäß gestalteten Zündvorrichtung nach dem 2-Leiterkonzept.
Claims (8)
- Zündvorrichtung für eine Hochdruck-Gasentladungslampe (10, 210), insbesondere für den Einsatz in Scheinwerfern von Kraftfahrzeugen, mit einem Zündtransformator (14, 214), dessen Primärwicklung (15, 215) eine Spannung zuführbar ist, dessen Sekundärwicklung (16, 216) mit dem hochtransformierten Wert der Spannung die Hochdruck-Gasentladungslampe (10, 210) zündet, wobei auf der Primärseite ein Kondensator (18, 218) parallel zur Reihenschaltung der Primärwicklung (15, 215) und eines steuerbaren Schalters (17, 217) vorgesehen ist, bei Einschaltung der Versorgungsspannung (U1) der Kondensator (18, 218) geladen wird, und der Kondensator (18, 218) bei Erreichen einer bestimmten Spannung durch das Durchschalten des steuerbaren Schalters (17, 217) zur Abgabe der Spannung entladen wird, dadurch gekennzeichnet, daß parallel zum Kondensator (18, 218) ein zweiter Kondensator (19, 219) in Reihe mit einer Diode (22, 222) vorgesehen ist, daß dieser zweite Kondensator (19, 219) auf eine geringere Spannung aufladbar ist als der erste Kondensator (18, 218), und daß dieser zweite Kondensator (19, 219) dann über die entsprechend gepolte Diode (22, 222) und den durchgeschalteten steuerbaren Schalter (17, 217) in die Primärwicklung (15, 215) entladen wird, wenn seine Spannung (UC2) größer geworden ist, als die (UC1) des ersten Kondensators (18, 218) bei dessen Entladung.
- Zündvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kapazität des zweiten Kondensators (19, 219) etwa 2- bis 5-fach so groß ist wie die Kapazität des ersten Kondensators (18, 218).
- Zündvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die den ersten Kondensator (18, 218) aufladende Spannung (U2 in Fig. 1, U1 in Fig. 2), größer ist, vorzugsweise ca. 2- bis 5-fach so groß, als die den zweiten Kondensator (19, 219) aufladende Spannung (U1 in Fig. 1, U2 in Fig. 2).
- Zündvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der erste Kondensator (18) von einer separat (13) zugeführten Spannung (U2) aufladbar ist.
- Zündvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der zweite Kondensator (219) von einer intern gewonnenen Spannung (U2 in Fig. 2) aufladbar ist, welche vorzugsweise um die Spannungsdifferenz einer Z-Diode (225) geringer ist als diejenige Spannung (U1), mit welcher der erste Kondensator (218) aufladbar ist.
- Zündvorrichtung nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß in Reihe mit den beiden Kondensatoren (18, 19; 218, 219) Widerstände (20, 21; 220, 224 und 220) vorgesehen sind, mit deren Hilfe die Zeitkonstanten der Aufladung der Kondensatoren (18, 19; 218, 219) unter Beachtung der erforderlichen Energie, die zur Zündung der Hochdruck- Gasentladungslampe (10, 210) und zu deren Überleitung in den Brennbetrieb notwendig ist, so wählbar sind, daß am zweiten Kondensator (19, 219) dann die gewünschte Spannung erreicht ist, wenn der steuerbare Schalter (17, 217) schließt.
- Zündvorrichtung nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß der steuerbare Schalter (17, 217) eine Funkenstrecke ist, welche bei Erreichen einer bestimmten Spannung durchschaltet.
- Zündvorrichtung nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß zwischen den Eingangsklemmen (11, 12; 211, 212) der Zündvorrichtung ein Spannungsbegrenzungselement (23; 223), insbesondere ein Varistor, zum Schließen des Zündstrompfades vorgesehen ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19544838 | 1995-12-01 | ||
DE19544838A DE19544838A1 (de) | 1995-12-01 | 1995-12-01 | Zündvorrichtung für eine Hochdruck-Gasentladungslampe |
PCT/DE1996/002047 WO1997021329A1 (de) | 1995-12-01 | 1996-10-28 | Zündvorrichtung für eine hochdruck-gasentladungslampe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0811306A1 EP0811306A1 (de) | 1997-12-10 |
EP0811306B1 true EP0811306B1 (de) | 2001-10-17 |
Family
ID=7778928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96945836A Expired - Lifetime EP0811306B1 (de) | 1995-12-01 | 1996-10-28 | Zündvorrichtung für eine hochdruck-gasentladungslampe |
Country Status (6)
Country | Link |
---|---|
US (1) | US5892332A (de) |
EP (1) | EP0811306B1 (de) |
JP (1) | JPH10513605A (de) |
KR (1) | KR19980701830A (de) |
DE (2) | DE19544838A1 (de) |
WO (1) | WO1997021329A1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0914754A1 (de) * | 1997-05-21 | 1999-05-12 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Zündvorrichtung für eine entladungslampe und verfahren zum zünden einer entladungslampe |
DE19923263A1 (de) * | 1999-05-20 | 2000-11-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum Zünden einer Lampe |
US6376806B2 (en) | 2000-05-09 | 2002-04-23 | Woo Sik Yoo | Flash anneal |
US6483257B1 (en) * | 2000-05-26 | 2002-11-19 | General Electric Company | Ignitor pulse variable reduction method and apparatus |
US7378803B2 (en) * | 2002-11-04 | 2008-05-27 | Koninklijke Philips Electronics N. V. | Igniting pulse booster circuit |
DE102004045834A1 (de) * | 2004-09-22 | 2006-03-23 | Bag Electronics Gmbh | Zündgerät |
ATE428292T1 (de) * | 2005-01-28 | 2009-04-15 | Koninkl Philips Electronics Nv | Schaltungsanordnung und verfahren zum betrieb einer hochdruck-gasentladungslampe |
DE202005003632U1 (de) * | 2005-03-03 | 2006-07-13 | Bag Electronics Gmbh | Zündschaltungsanordnung mit erhöhter Ausfallsicherheit |
TWM280613U (en) * | 2005-07-11 | 2005-11-11 | Dj Auto Components Corp | Low frequency actuated electronic ballast |
WO2007091186A1 (en) * | 2006-02-06 | 2007-08-16 | Philips Intellectual Property & Standards Gmbh | Circuit arrangement and method of driving a high-pressure gas discharge lamp |
US7760061B2 (en) * | 2006-08-31 | 2010-07-20 | General Electric Company | Lamp transformer |
US7855625B2 (en) * | 2006-08-31 | 2010-12-21 | General Electric Company | Lamp transformer |
US7460379B2 (en) * | 2006-09-05 | 2008-12-02 | General Electric Company | Electrical circuit with voltage multiplier for facilitating ignition of a gas discharge lamp |
US7456583B2 (en) * | 2006-09-05 | 2008-11-25 | General Electric Company | Electrical circuit with dual stage resonant circuit for igniting a gas discharge lamp |
JP2010530597A (ja) * | 2007-06-06 | 2010-09-09 | オスラム ゲゼルシャフト ミット ベシュレンクテル ハフツング | 点弧能力が改善された高圧放電ランプならびにガス放電ランプのための点弧装置 |
DE102009032985A1 (de) * | 2009-07-14 | 2011-01-20 | Osram Gesellschaft mit beschränkter Haftung | Schaltungsanordnung und Verfahren zum Zünden einer Entladungslampe |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3810212A (en) * | 1973-01-02 | 1974-05-07 | Polaroid Corp | Preferential power distribution system for battery powered camera having electronic flash unit |
NL7601312A (nl) * | 1976-02-10 | 1977-08-12 | Philips Nv | Inrichting voorzien van een gasontladingsflits- lamp. |
DE3108548C2 (de) * | 1981-03-06 | 1986-07-31 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Zündschaltung für eine Hochdruckmetalldampfentladungslampe |
DE4017415C2 (de) * | 1989-06-02 | 1994-04-14 | Koito Mfg Co Ltd | Schaltungsanordnung zum Betrieb einer Hochdruck-Entladungslampe für einen Fahrzeugscheinwerfer |
NL9000077A (nl) * | 1990-01-11 | 1991-08-01 | Philips Nv | Schakelinrichting geschikt voor het ontsteken van een hogedrukontladingslamp. |
US5059867A (en) * | 1990-04-03 | 1991-10-22 | General Electric Company | Ballast circuit with improved transfer functions |
US5036256A (en) * | 1990-06-21 | 1991-07-30 | Gte Products Corporation | Arc discharge ballast suitable for automotive applications |
DE9015674U1 (de) * | 1990-11-15 | 1992-03-12 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Getaktetes Schaltnetzteil für den Betrieb einer Entladungslampe |
JP2995113B2 (ja) * | 1991-08-23 | 1999-12-27 | コニカ株式会社 | 閃光発光回路 |
US5426346A (en) * | 1994-03-09 | 1995-06-20 | General Electric Company | Gas discharge lamp ballast circuit with reduced parts-count starting circuit |
-
1995
- 1995-12-01 DE DE19544838A patent/DE19544838A1/de not_active Ceased
-
1996
- 1996-10-28 US US08/875,663 patent/US5892332A/en not_active Expired - Fee Related
- 1996-10-28 WO PCT/DE1996/002047 patent/WO1997021329A1/de not_active Application Discontinuation
- 1996-10-28 JP JP9520843A patent/JPH10513605A/ja active Pending
- 1996-10-28 KR KR1019970705227A patent/KR19980701830A/ko not_active Application Discontinuation
- 1996-10-28 DE DE59607952T patent/DE59607952D1/de not_active Expired - Fee Related
- 1996-10-28 EP EP96945836A patent/EP0811306B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1997021329A1 (de) | 1997-06-12 |
DE59607952D1 (de) | 2001-11-22 |
JPH10513605A (ja) | 1998-12-22 |
DE19544838A1 (de) | 1997-06-05 |
KR19980701830A (ko) | 1998-06-25 |
US5892332A (en) | 1999-04-06 |
EP0811306A1 (de) | 1997-12-10 |
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