EP1424880A2 - Vorrichtung zum Betreiben von Entladungslampen - Google Patents
Vorrichtung zum Betreiben von Entladungslampen Download PDFInfo
- Publication number
- EP1424880A2 EP1424880A2 EP03022972A EP03022972A EP1424880A2 EP 1424880 A2 EP1424880 A2 EP 1424880A2 EP 03022972 A EP03022972 A EP 03022972A EP 03022972 A EP03022972 A EP 03022972A EP 1424880 A2 EP1424880 A2 EP 1424880A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamps
- transformer
- filaments
- series
- current
- 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- Withdrawn
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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
- H05B41/16—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
- H05B41/18—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 a starting switch
-
- 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
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
Definitions
- the present invention relates to a device for operating at least two Discharge lamps with a current control device, for controlling the current through the Filaments.
- the present invention relates to electronic ballasts, into which such a device is integrated.
- the operation of the discharge lamps includes both their starting and their burning.
- Load circuit denotes the load of a bridge, which is used to operate a discharge lamp Inverter is used.
- Each load circuit has its own lamp Pre-heater.
- the possibility operate two lamps in one load circuit.
- the primary coil of a heating transformer the series connection of two lamps connected in parallel and the secondary coil of the heating transformer between the two lamps.
- the primary winding lies in a section of the bridge that is suitable for the application.
- the circuitry implementation of the load circuits is relatively complex because defined, sequential starting and subsequent joint operation of the lamps electronic control circuits with relay or transistor switches are required. To the In contrast, operating individual lamps there are relatively cheap control circuits, who only use passive components to control the preheating. essential Such circuits include a heat sensitive resistor with a positive one Temperature coefficient.
- FIG. 1 a bridge circuit with a related load circuit is shown.
- the Bridge is for the purpose of inverter as a half bridge with two switching elements 1 and 2 and two capacitors 3 and 4 realized.
- the load circuit 5 in the bridge includes one Coil 6 in series with a lamp 7, which has both a resonance capacitor 8 and is closed in parallel with a heat-sensitive resistor 9.
- the PTC resistor 9 is designed so that it has a sufficient amount even after ignition Current leads to remain high-resistance, so that the resonance is maintained with the appropriate quality can be obtained.
- FIG. 2a shows a variant of the load circuit of Figure 2a.
- a Series capacitor 12 switched. This causes the resonance circuit to be detuned is not as pronounced by the PTC resistor 9 as in the case of the circuit in FIG. 2a. This means that in this case the ignition voltage is reached faster and the lamp as a result ignites more quickly.
- FIGS. 2a and 2b Another variant of the load circuits, which are shown in FIGS. 2a and 2b, is shown in FIG Figure 2c reproduced.
- the PTC resistor 9 is in the cold state primarily the series capacitor 12 is effective, whereas in the warm state of the PTC resistor 9, i.e. during the operation and lighting of the lamp, the series connection of the two capacitors 8 and 9 is primarily effective.
- the object of the present invention is to operate two lamps propose an inexpensive preheating circuit.
- this object is achieved by a device for operating at least two discharge lamps with a first contact device for electrical Connecting a first discharge lamp, which has two first filaments, a second Contact device for electrically connecting a second discharge lamp, the has two second filaments, and a current control device for controlling the Current through the two first and two second filaments, with terminals of first contact device for one of the first filaments with terminals of the second Contact device for one of the second filaments together with a secondary winding a transformer device are connected in a circuit and one connection terminal each the first and second contact means for the other of the first and second filaments with the interposition of the current control device in series with the Primary winding of the transformer device are interconnected.
- the advantage of the circuit according to the invention is that compared to the preheating circuit for one lamp the additional effort for preheating a second lamp only in one component, namely a transformer.
- the transformer with suitable dimensions ensures that all filaments of the Discharge lamps can be heated simultaneously and with approximately the same output.
- the current control device advantageously comprises a PTC resistor with a positive one Temperature coefficient. This component enables a relatively simple and cost-effective control of the preheating for the lamps. Instead of the PTC resistors the current control device can comprise a transistor. This allows preheating Controlled more precisely, but also more elaborately.
- a series capacitor can be connected in series with the current control device. This causes the resonance circuit to be detuned less and the lamps can be ignited earlier by a corresponding current increase.
- a sequence start capacitor can be connected in parallel to the first and / or second contact device be provided.
- the sequential starting sequence is advantageously controllable at least two lamps. This allows a sequence start to avoid very high ignition currents / voltages can be achieved, which makes the use of less loadable and thus enables cheaper components.
- the device can also be connected to a choke coil with which the Device can be operated in resonance.
- This can control the device realized by a single inverter for the operation of two or more lamps become.
- the device according to the invention is advantageously in an electrical ballast for Integrated fluorescent lamps. This means that two or more lamps can be connected to one ballast operate.
- FIG. 3 shows a load circuit according to the invention of a ballast for discharge lamps shown.
- the lamps 71 and 72 are operated in the load circuit.
- You have Two filaments 711, 712 and 721, 722 each.
- In the circuit are for the filament 711 of lamp 71, connecting terminals 20 and 21, for filament 712 of lamp 71 the connection terminals 22 and 23, for the filament 721 of the lamp 72 the connection terminals 24 and 25, and the connecting terminals 26 for the filament 722 of the lamp 72 and 27 are provided.
- a resonance capacitor C res 8 is connected between the connection terminals 20 and 26 of the two lamps 71 and 72.
- a resonance inductor L res 6 is also connected to the connecting terminal 26.
- a resistor PTC with a positive temperature coefficient, a series capacitor C ser and a primary coil L p of a transformer are connected in series between the connecting terminals 21 and 27 of the lamps 71 and 72.
- the secondary coil Ls of the transformer is connected between the terminals 23 and 25 of the lamps 7 1 and 72.
- the connection terminals 22 and 24 of the two lamps are connected to one another.
- a sequence start capacitor C seq is connected between the connection terminals 24 and 26 of the lamp 72.
- lamps 71 and 72 The operation of the load circuit with the two lamps 71 and 72 will be explained in more detail below. Basically, the operation of lamps 71 and 72 consists of three phases: preheating the filaments, igniting the lamps and burning the lamps. The energy is supplied to the lamps via the resonance circuit C res , L res .
- the heat-sensitive resistor PTC 9 is still cool and therefore low-resistance. In this state, it dampens the load resonance circuit to such an extent that the voltage across the lamps 71, 72 is not sufficient to ignite them.
- the preheating current flows through the filament 711 and 722 and thus also through the series circuit consisting of the resistor PTC 9, the series capacitor C ser and the primary winding L p of the transformer.
- Preheating current is coupled into the circuit consisting of the two filaments 712 and 721 and the secondary coil L via the transformer.
- the transformer is advantageously dimensioned such that the preheating current through the filaments 711 and 722 corresponds in terms of power to the preheating current through the filaments 712 and 721. A symmetrical preheating of all filaments 711, 712, 721, 722 can thus be achieved.
- the series capacitor C ser is optionally connected in the load circuit. In the preheating phase, it ensures a current increase in the resonance circuit and thus accelerates the preheating phase.
- the preheating current heats the PTC 9 resistor so that it ends at the end of the preheating phase becomes high impedance. This largely eliminates the damping of the load circuit Quality of the resonant circuit and thus the voltage at lamps 71 and 72 increases and the ignite both lamps.
- the two lamps 71 and 72 are ignited sequentially.
- the sequence start capacitor C seq is connected in parallel to the lamp 72. Since the lamps 71 and 72 represent a voltage divider, because of the sequence start capacitor C seq , less voltage drops across the lamp 72 than at the lamp 71. Consequently, the lamp 71 ignites in front of the lamp 72. This lead time can be targeted by suitable dimensioning of the sequence start capacitor C seq be specified.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
- Figur 1
- einen Schaltplan einer Halbbrücke mit einem Lastkreis gemäß dem Stand der Technik zum Betreiben einer Leuchtstofflampe;
- Figuren 2a, 2b, 2c
- Varianten von Lastkreisen gemäß dem Stand der Technik; und
- Figur 3
- einen erfindungsgemäßen Lastkreis zum Betreiben von mindestens zwei Lampen.
Claims (7)
- Vorrichtung zum Betreiben von mindestens zwei Entladungslampen (71, 72) miteiner ersten Kontakteinrichtung zum elektrischen Anschließen einer ersten Entladungslampe (71), die zwei erste Glühwendeln (711, 712) aufweist,einer zweiten Kontakteinrichtung zum elektrischen Anschließen einer zweiten Entladungslampe, die zwei zweite Glühwendeln (721, 722) aufweist, undeiner Stromsteuereinrichtung zur Steuerung des Stroms durch die zwei ersten und zwei zweiten Glühwendeln (711, 712, 721, 722),Anschlussklemmen (22, 23) der ersten Kontakteinrichtung für eine der ersten Glühwendeln (712) mit Anschlussklemmen (24, 25) der zweiten Kontakteinrichtung für eine der zweiten Glühwendeln (721) zusammen mit einer Sekundärwicklung (Ls) einer Transformatoreinrichtung im Kreis geschaltet sind undje eine Anschlussklemme (21, 27) der ersten und zweiten Kontakteinrichtung für die jeweils anderen der ersten und zweiten Glühwendeln (711, 722) unter Zwischenschaltung der Stromsteuereinrichtung (9) in Serie mit der Primärwicklung (Lp) der Transformatoreinrichtung miteinander verbunden sind.
- Vorrichtung nach Anspruch 1, wobei zwischen die übrigen Anschlussklemmen (20, 26) der ersten und zweiten Kontakteinrichtung ein Resonanzkondensator (8) geschaltet ist.
- Vorrichtung nach Anspruch 1 oder 2, wobei in Serie zu der Stromsteuereinrichtung (9) und der Primärwicklung (Lp) der Transformatoreinrichtung ein Serienkondensator (12) zur Stromüberhöhung für eine Vorheizphase geschaltet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 3, wobei die Stromsteuereinrichtung (9) einen PTC-Widerstand umfasst.
- Vorrichtung nach einem der Ansprüche 1 bis 4, wobei parallel zu der ersten oder zweiten Kontakteinrichtung ein Sequenzstartkondensator (Cseq) geschaltet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 5, wobei an die Vorrichtung eine Drosselspule (6) angeschlossen ist, mit der die Vorrichtung zum Zünden der Entladungslampen (71, 72) in Resonanz betrieben werden kann.
- Elektronisches Vorschaltgerät zum Betreiben von Entladungslampen (71, 72) mit einer Vorrichtung nach einem der Ansprüche 1 bis 6.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10252836 | 2002-11-13 | ||
DE10252836A DE10252836A1 (de) | 2002-11-13 | 2002-11-13 | Vorrichtung zum Betreiben von Entlaudungslampen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1424880A2 true EP1424880A2 (de) | 2004-06-02 |
EP1424880A3 EP1424880A3 (de) | 2008-03-19 |
Family
ID=32185597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03022972A Withdrawn EP1424880A3 (de) | 2002-11-13 | 2003-10-09 | Vorrichtung zum Betreiben von Entladungslampen |
Country Status (6)
Country | Link |
---|---|
US (1) | US6806657B2 (de) |
EP (1) | EP1424880A3 (de) |
KR (1) | KR20040042849A (de) |
CN (1) | CN1505452A (de) |
CA (1) | CA2448791A1 (de) |
DE (1) | DE10252836A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7592753B2 (en) * | 1999-06-21 | 2009-09-22 | Access Business Group International Llc | Inductively-powered gas discharge lamp circuit |
DE10252834A1 (de) * | 2002-11-13 | 2004-05-27 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Vorrichtung zum Betreiben von Entladungslampen mittels eines Transformators mit vier Wicklungen und entsprechendes Verfahren |
JP4956020B2 (ja) * | 2005-03-02 | 2012-06-20 | パナソニック株式会社 | 点灯ユニット及び放電ランプ |
DE102005060345A1 (de) * | 2005-12-16 | 2007-06-21 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung und Verfahren zum Betreiben mindestens einer ersten und einer zweiten Lampe |
US7821208B2 (en) * | 2007-01-08 | 2010-10-26 | Access Business Group International Llc | Inductively-powered gas discharge lamp circuit |
JP2011114985A (ja) * | 2009-11-27 | 2011-06-09 | Sanyo Electric Co Ltd | 電池内蔵機器と充電台 |
CN102573251A (zh) * | 2011-11-28 | 2012-07-11 | 宁波凯耀电器制造有限公司 | 一种高效荧光灯预热电路 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5410587A (en) * | 1977-06-27 | 1979-01-26 | Nippon Electric Co | Device for firing discharge lamp |
JPS55151790A (en) * | 1979-05-16 | 1980-11-26 | Nippon Electric Co | Device for firing discharge lamp |
DE3046617A1 (de) * | 1979-12-19 | 1981-09-03 | Naamloze Vennootschap Philips' Gloeilampenfabrieken, Eindhoven | Elektronisches hilfsgeraet zum zuenden und speisen einer gas- und/oder dampfentladungslampe bei wechselspannung |
EP0378992A1 (de) * | 1989-01-16 | 1990-07-25 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung zum Betrieb von Entladungslampen |
EP0693864A2 (de) * | 1994-07-21 | 1996-01-24 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung zum Betrieb einer oder mehrerer Niederdruckentladungslampen |
EP0798952A1 (de) * | 1996-03-27 | 1997-10-01 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung zum Betrieb von elektrischen Lampen und Betriebsverfahren für elektrische Lampen |
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US518112A (en) * | 1894-04-10 | Machine for making shoes or covers for pneumatic tires | ||
DE2245189C3 (de) * | 1971-09-18 | 1980-09-25 | Fujitsu Ltd., Kawasaki, Kanagawa (Japan) | Vorrichtung zur Übertragung eines restseitenbandträgermodulierten Mehrpegelsignals und eines Synchronisier-Pilotsignals |
US3824548A (en) * | 1973-01-15 | 1974-07-16 | Us Navy | Satellite communications link monitor |
US4309726A (en) * | 1979-05-28 | 1982-01-05 | Hitachi, Ltd. | Muting circuit in a PCM recording and reproducing apparatus |
US4303939A (en) * | 1980-08-11 | 1981-12-01 | Rca Corporation | Horizontal stability measurement apparatus |
US4392085A (en) * | 1980-12-19 | 1983-07-05 | Gte Products Corporation | Direct drive ballast with delayed starting circuit |
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JPS61154227A (ja) * | 1984-12-26 | 1986-07-12 | Mitsubishi Electric Corp | 2段符号化方法 |
US4817192A (en) * | 1986-10-31 | 1989-03-28 | Motorola, Inc. | Dual-mode AFC circuit for an SSB radio transceiver |
US4794447A (en) * | 1986-11-17 | 1988-12-27 | North American Philips Corporation | Method and apparatus for transmitting and receiving a high definition NTSC compatible television signal over a single DBS channel in time division multiplex form |
US4800426A (en) * | 1987-05-18 | 1989-01-24 | New York Institute Of Technology | Method and system for transmission and reception of high definition |
US5134464A (en) * | 1990-11-16 | 1992-07-28 | North American Philips Corporation | Method and apparatus for the transmission and reception of a multicarrier digital television signal |
JPH0691297B2 (ja) * | 1989-01-12 | 1994-11-14 | 松下電器産業株式会社 | 半導体レーザー |
US5029003A (en) * | 1989-12-18 | 1991-07-02 | General Electric Company | Apparatus for incorporating digital signals with a standard TV signal |
EP0436251B1 (de) * | 1989-12-29 | 1995-09-27 | Laboratoires D'electronique Philips | System zur Kodierung/Dekodierung von digitalen Signalen zur Übertragung und/oder Speicherung |
US5214656A (en) * | 1990-12-13 | 1993-05-25 | At&T Bell Laboratories | Multiplexed coded modulation with unequal error protection |
US5598220A (en) * | 1991-07-18 | 1997-01-28 | Zenith Electronics Corporation | Digital signal with multilevel symbols and sync recognition |
US5400064A (en) * | 1991-08-16 | 1995-03-21 | Compaq Computer Corporation | High density ink jet printhead with double-U channel actuator |
US5802241A (en) * | 1992-03-26 | 1998-09-01 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US5377051A (en) * | 1993-01-13 | 1994-12-27 | Hitachi America, Ltd. | Digital video recorder compatible receiver with trick play image enhancement |
US5576902A (en) * | 1993-01-13 | 1996-11-19 | Hitachi America, Ltd. | Method and apparatus directed to processing trick play video data to compensate for intentionally omitted data |
-
2002
- 2002-11-13 DE DE10252836A patent/DE10252836A1/de not_active Withdrawn
-
2003
- 2003-10-09 EP EP03022972A patent/EP1424880A3/de not_active Withdrawn
- 2003-10-30 US US10/695,782 patent/US6806657B2/en not_active Expired - Fee Related
- 2003-11-10 CA CA002448791A patent/CA2448791A1/en not_active Abandoned
- 2003-11-12 KR KR1020030079847A patent/KR20040042849A/ko not_active Application Discontinuation
- 2003-11-13 CN CNA200310118177A patent/CN1505452A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5410587A (en) * | 1977-06-27 | 1979-01-26 | Nippon Electric Co | Device for firing discharge lamp |
JPS55151790A (en) * | 1979-05-16 | 1980-11-26 | Nippon Electric Co | Device for firing discharge lamp |
DE3046617A1 (de) * | 1979-12-19 | 1981-09-03 | Naamloze Vennootschap Philips' Gloeilampenfabrieken, Eindhoven | Elektronisches hilfsgeraet zum zuenden und speisen einer gas- und/oder dampfentladungslampe bei wechselspannung |
EP0378992A1 (de) * | 1989-01-16 | 1990-07-25 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung zum Betrieb von Entladungslampen |
EP0693864A2 (de) * | 1994-07-21 | 1996-01-24 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung zum Betrieb einer oder mehrerer Niederdruckentladungslampen |
EP0798952A1 (de) * | 1996-03-27 | 1997-10-01 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung zum Betrieb von elektrischen Lampen und Betriebsverfahren für elektrische Lampen |
Also Published As
Publication number | Publication date |
---|---|
CN1505452A (zh) | 2004-06-16 |
US20040090193A1 (en) | 2004-05-13 |
EP1424880A3 (de) | 2008-03-19 |
US6806657B2 (en) | 2004-10-19 |
KR20040042849A (ko) | 2004-05-20 |
CA2448791A1 (en) | 2004-05-13 |
DE10252836A1 (de) | 2004-05-27 |
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