EP0111956A1 - Disposition de circuit pour mettre en marche des lampes à décharge à haute pression - Google Patents
Disposition de circuit pour mettre en marche des lampes à décharge à haute pression Download PDFInfo
- Publication number
- EP0111956A1 EP0111956A1 EP83201696A EP83201696A EP0111956A1 EP 0111956 A1 EP0111956 A1 EP 0111956A1 EP 83201696 A EP83201696 A EP 83201696A EP 83201696 A EP83201696 A EP 83201696A EP 0111956 A1 EP0111956 A1 EP 0111956A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamp
- capacitor
- circuit arrangement
- diode
- voltage
- 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
Links
Images
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
- H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
- H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
- H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
- H05B41/231—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for high-pressure lamps
Definitions
- the invention relates to a circuit arrangement for operating high-pressure gas discharge lamps with a pulsating direct current, consisting of a device connected to an alternating voltage network full-wave rectifier, the DC voltage of the discharge lamp is supplied via a lying with it in series a current limiter, the output of the V ollweg GmbHrichters by a series circuit with a Diode and a capacitor is bridged, which at least partially discharges via the lamp after every half cycle of the AC mains voltage.
- a problem in the operation of high-pressure gas discharge lamps is the initial ignition of the lamp, starting the cold lamp and the re-ignition ie after each zero crossing of the N etzrucstromes or each DC pulse.
- high re-ignition voltages for example from 500 to 1000 V, may be required during the warm-up phase, which takes between 30 seconds and 5 minutes after the initial ignition, depending on the lamp size, that these are no longer supplied by the voltage source can be and therefore the lamp goes out.
- Almost all components of the circuit arrangement, such as switching transistors and capacitors, must be designed for this voltage.
- the re-ignition of the lamps is improved in that the capacitor discharges at least partially via the lamp via a thyristor after every half cycle of the mains AC voltage, ie in the vicinity of the zero crossings of the mains AC voltage.
- a high voltage of approximately 200 to 300 V is required across this capacitor for a time of approximately 1 msec before and after the zero crossing of the AC voltage in order to avoid reignition difficulties.
- this capacitor has a capacitance of 2.2 / uF for this.
- Such a capacitor is relatively large in space and would be difficult to insert into a circuit arrangement which, for example, should be able to be integrated into the lamp itself, for example into the lamp base.
- the invention has for its object to provide a circuit arrangement for operating high-pressure gas discharge lamps, which enables a low re-ignition voltage during the warm-up phase of the lamp and manages with relatively small components.
- This object is achieved in a circuit arrangement of the type mentioned according to the invention in that the capacitor has a value of 10 nF to 1 / uF and that in the circuit between the diode-side end of this capacitor and the lamp a high-resistance resistor is connected to the current limiter .
- the invention is based on the knowledge that it is sufficient to avoid reignition difficulties if a very small current flows in the discharge circuit between the capacitor and the lamp compared to the mean lamp current, which is between 1 and 30 mA depending on the lamp size. This is accomplished by passing the current through the lamp the high-resistance is limited. At the same time, a substantial discharge of the now relatively small capacitor is avoided.
- the current limiter can be an ohmic resistor which is connected in series with a further diode.
- the high-resistance resistor is advantageously connected to the lamp via a switching transistor, which leads to a reduction in the power loss in the high-resistance resistor.
- the current limiter can also be an electronic ballast, e.g. a chopper or a flyback converter.
- a further diode is connected in series to the electronic ballast and the lamp-side end of the high-resistance resistor is connected between this further diode and the ballast.
- a switching transistor usually connected in series with the lamp is conductive in the vicinity of the zero crossings of the AC line voltage, so that a current can then flow from the capacitor to the lamp via the high-resistance resistor.
- a and B are input terminals for connection to one AC network of 220 V, 50 Hz.
- a full-wave rectifier with four diodes, which generates a pulsating direct current, is connected to these input terminals, possibly via a line filter.
- a high-pressure gas discharge lamp 3, in particular a metal halide discharge lamp, is connected in series with a current limiter 2 to the output of the full-wave rectifier 1.
- the current limiter 2 is an electronic ballast, as is described, for example, in US Pat. No. 3,890,537.
- the output of the full-wave rectifier 1 is also bridged by a series connection of a diode 4 and a capacitor 5. Between the diode-side end of the capacitor 5 and the lamp 3, a high-resistance resistor 6 is connected to the current limiter 2.
- the lamp 3 After the lamp 3 has been ignited for the first time, it is in a warm-up phase which, depending on the lamp size, takes between about 30 seconds and 5 minutes. During this warm-up phase, relatively high re-ignition voltages are required after each mains AC voltage zero crossing so that the lamp does not go out. However, these high re-ignition voltages cannot normally be supplied by the electronic ballast 2 during the zero crossing of the AC mains voltage. Rather, the capacitor 5 is provided for this purpose, which charges during the peaks of the mains AC voltage periods and at least partially discharges via the lamp 3 in the vicinity of the zero crossings of the mains AC voltage. If the capacitor 5 were connected directly to the lamp 3, discharge currents of more than 100 mA would flow, which would require a very large capacitor.
- the high-resistance resistor 6 reduces these currents from the capacitor 5 to 1 to 30 mA, depending on the lamp size. Surprisingly, it has been found that this compared with the average L ampenstrom very small discharge current during the zero- gears of the AC line voltage is sufficient to reignite the lamp 3 during its warm-up phase with a relatively low voltage. For this, the capacitor 5 only needs to have a capacitance of 10 nF to 1 / uF. In a practical exemplary embodiment with a 45 W metal halide discharge lamp, the capacitor 5 had a capacitance of 200 nF and the resistor 6 had a value of 300 kOhm.
- the capacitor 5 is charged via the diode 4 to the peak value of the AC line voltage (about 300 V). At the zero crossing of the AC mains voltage, a current of approximately 1 mA flows from the capacitor 5 via the resistor 6 through the lamp 3; in this case the capacitor 5 is not completely discharged. With this arrangement through 4 5 W - M etallhalogenidlampen without Wiederzündprobleme its warming up.
- a further diode 7 is connected upstream of the electronic ballast 2 and the lamp-side end of the high-resistance resistor 6 is connected between this further diode 7 and the ballast 2.
- the high-resistance resistor 6 contributes to reducing the discharge current from the capacitor 5 via the ballast 2 through the lamp 3 during the zero crossings of the AC mains voltage.
- the further diode 7 prevents a reverse current from the capacitor 5 to the full-wave rectifier 1.
- the electronic ballast 2 is a forward converter, for example, its switching transistor is turned on near the zero crossings of the AC line voltage, so that a current can flow from the capacitor 5 via the high-resistance resistor 6 directly to the lamp 3 during this time.
- the switching transistor of the electronic ballast 2 usually works with only one button ratio of about 30%, so that the current from the capacitor 5 via the high-resistance resistor 6 is also interrupted with this duty cycle. Accordingly, the power loss in the high-resistance resistor 6 is reduced to 30%, which, however, has no disadvantages for the ignition behavior of the lamp 3, since the additional current from the capacitor 5 only has to flow through the lamp 3 in the vicinity of the zero crossings of the AC mains voltage.
- the circuit arrangement according to FIG. 3 has an ohmic resistor 12 of approximately 250 ohms, which is connected in series with a further diode 7 to avoid reverse currents.
- the control circuit 9 is regulated by the rectified mains voltage.
- the switching transistor 8 is switched on so that an additional current from the capacitor 5 can flow through the lamp 3 via the high-resistance resistor 6.
- the switching transistor 8 is switched non-conductive by the control circuit 9 and the current through the high-resistance resistor 6 is thus interrupted. Consequently .
- Power losses occur in the high-resistance resistor 6 only during approximately 10% of the mains AC voltage period. In this circuit for a 45 W metal halide discharge lamp, the power loss in the high-resistance resistor 6 is usually below 0.1 W.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83201696T ATE23246T1 (de) | 1982-12-11 | 1983-12-01 | Schaltungsanordnung zum betrieb von hochdruckgasentladungslampen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3245924 | 1982-12-11 | ||
DE19823245924 DE3245924A1 (de) | 1982-12-11 | 1982-12-11 | Schaltungsanordnung zum betrieb von hochdruck-gasentladungslampen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0111956A1 true EP0111956A1 (fr) | 1984-06-27 |
EP0111956B1 EP0111956B1 (fr) | 1986-10-29 |
Family
ID=6180442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83201696A Expired EP0111956B1 (fr) | 1982-12-11 | 1983-12-01 | Disposition de circuit pour mettre en marche des lampes à décharge à haute pression |
Country Status (6)
Country | Link |
---|---|
US (1) | US4816721A (fr) |
EP (1) | EP0111956B1 (fr) |
JP (1) | JPS59117095A (fr) |
AT (1) | ATE23246T1 (fr) |
CA (1) | CA1229128A (fr) |
DE (2) | DE3245924A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0294901A1 (fr) * | 1987-06-11 | 1988-12-14 | Koninklijke Philips Electronics N.V. | Dispositif de commutation |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3517248A1 (de) * | 1985-05-13 | 1986-11-13 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zum betrieb von gasentladungslampen mit hoeherfrequentem strom |
DE69127156T2 (de) * | 1990-09-25 | 1998-03-05 | Matsushita Electric Works Ltd | Apparat für den Betrieb von Entladungslampen |
CA2198173A1 (fr) * | 1997-02-21 | 1998-08-21 | Exacta Transformers Of Canada Ltd. | Systeme de ballast de lampe a decharge haute intensite a microcontroleur et methode associee |
ATE555637T1 (de) * | 2008-02-14 | 2012-05-15 | Koninkl Philips Electronics Nv | Vorrichtung zur steuerung einer entladungslampe |
RU2594353C2 (ru) * | 2009-12-11 | 2016-08-20 | Конинклейке Филипс Электроникс Н.В. | Схема управления для управления нагрузочной цепью |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010398A (en) * | 1974-09-18 | 1977-03-01 | U.S. Philips Corporation | Electric device provided with a gas and/or vapor discharge lamp |
FR2438406A1 (fr) * | 1978-10-02 | 1980-04-30 | Philips Nv | Dispositif a lumiere mixte |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3066243A (en) * | 1959-11-02 | 1962-11-27 | Engelhard Hanovia Inc | Starting and operating circuit for high pressure arc lamps |
US3376470A (en) * | 1965-08-12 | 1968-04-02 | Atomic Energy Commission Usa | Capacitor discharge circuit for starting and sustaining a welding arc |
US3403293A (en) * | 1966-07-29 | 1968-09-24 | Philco Ford Corp | Starter circuit for three-electrode gaseous discharge device |
US3780342A (en) * | 1972-03-01 | 1973-12-18 | Gen Electric | Ballast apparatus for starting and operating arc lamps |
JPS5410850B2 (fr) * | 1972-06-06 | 1979-05-10 | ||
US3890537A (en) * | 1974-01-02 | 1975-06-17 | Gen Electric | Solid state chopper ballast for gaseous discharge lamps |
JPS5551630A (en) * | 1978-10-09 | 1980-04-15 | Ichikoh Ind Ltd | Illuminator |
US4350933A (en) * | 1980-11-26 | 1982-09-21 | Honeywell Inc. | Two-wire ballast for fluorescent tube dimming |
US4500812A (en) * | 1983-02-14 | 1985-02-19 | Gte Products Corporation | Electronic ballast circuit |
-
1982
- 1982-12-11 DE DE19823245924 patent/DE3245924A1/de not_active Withdrawn
-
1983
- 1983-11-25 US US06/555,226 patent/US4816721A/en not_active Expired - Fee Related
- 1983-12-01 AT AT83201696T patent/ATE23246T1/de not_active IP Right Cessation
- 1983-12-01 DE DE8383201696T patent/DE3367315D1/de not_active Expired
- 1983-12-01 EP EP83201696A patent/EP0111956B1/fr not_active Expired
- 1983-12-08 CA CA000442812A patent/CA1229128A/fr not_active Expired
- 1983-12-09 JP JP58231625A patent/JPS59117095A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010398A (en) * | 1974-09-18 | 1977-03-01 | U.S. Philips Corporation | Electric device provided with a gas and/or vapor discharge lamp |
FR2438406A1 (fr) * | 1978-10-02 | 1980-04-30 | Philips Nv | Dispositif a lumiere mixte |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0294901A1 (fr) * | 1987-06-11 | 1988-12-14 | Koninklijke Philips Electronics N.V. | Dispositif de commutation |
Also Published As
Publication number | Publication date |
---|---|
EP0111956B1 (fr) | 1986-10-29 |
DE3245924A1 (de) | 1984-06-14 |
JPS59117095A (ja) | 1984-07-06 |
DE3367315D1 (en) | 1986-12-04 |
CA1229128A (fr) | 1987-11-10 |
ATE23246T1 (de) | 1986-11-15 |
US4816721A (en) | 1989-03-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3886189T2 (de) | Elektrische Anordnung zum Zünden und Speisen einer Gasentladungslampe. | |
DE2941822C2 (fr) | ||
EP0306086B1 (fr) | Dispositif de circuit pour le fonctionnement de lampe de décharge à gaz sous haute pression | |
DE3231939C2 (fr) | ||
DE2903224C2 (de) | Schaltungsanordnung zum Zünden und Speisen einer mit einer vorheizbaren Elektrode versehenen Metalldampfentladungslampe | |
DE3811194A1 (de) | Festkoerper-betriebsschaltung fuer eine gleichstrom-entladungslampe | |
DE2705968A1 (de) | Starter- und vorschaltanordnung fuer gasentladungslampe | |
DE3881025T2 (de) | Schaltung fuer eine hochleistungslampe mit starker entladung. | |
EP0372303B1 (fr) | Circuit pour le fonctionnement d'une lampe de décharge à basse pression | |
EP0800335A2 (fr) | Circuit pour alimenter des lampes électriques | |
DE3829388A1 (de) | Schaltungsanordnung zum betrieb einer last | |
DE2751464A1 (de) | Starter zum zuenden einer gas- und/oder dampfentladungslampe | |
DE69202783T2 (de) | Zünd- und Betriebsschaltung für Bogenentladungslampe. | |
EP0062276A1 (fr) | Ballast pour le fonctionnement de lampes à décharge à basse pression | |
DE3046617C2 (fr) | ||
DE69017940T2 (de) | Wechselrichter zum Speisen zweier Gas und / oder Dampfentladungslampen. | |
DE2827395A1 (de) | Schaltungsanordnung zum zuenden einer elektrischen entladungslampe | |
DE69514181T2 (de) | Schaltungsanordnung | |
DE2812623A1 (de) | Zuendgeraet fuer eine hochdruckentladungslampe | |
EP0111373B1 (fr) | Dispositif de circuit pour mise en marche et fonctionnement de lampes de décharge à gaz et à haute pression | |
EP0111956B1 (fr) | Disposition de circuit pour mettre en marche des lampes à décharge à haute pression | |
DE69616451T2 (de) | Umschaltanordnung | |
DE3247596A1 (de) | Wechselrichterschaltung mit symmetriesteuerung | |
DE3530638A1 (de) | Schaltungsanordnung zum starten und betrieb von gasentladungslampen | |
DE19734298B4 (de) | Zündschaltkreis zum Zünden einer Leuchtstoffröhre mit vorheizbaren Elektroden |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT DE FR GB NL |
|
17P | Request for examination filed |
Effective date: 19840725 |
|
17Q | First examination report despatched |
Effective date: 19860117 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE FR GB NL |
|
REF | Corresponds to: |
Ref document number: 23246 Country of ref document: AT Date of ref document: 19861115 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3367315 Country of ref document: DE Date of ref document: 19861204 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: N.V. PHILIPS' GLOEILAMPENFABRIEKEN Owner name: PHILIPS PATENTVERWALTUNG GMBH |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19891231 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19901130 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19901218 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19901221 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19910225 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19910701 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19911201 Ref country code: AT Effective date: 19911201 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19920831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19920901 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |