EP1424880A2 - Appareil pour alimenter des lampes à décharge - Google Patents

Appareil pour alimenter des lampes à décharge Download PDF

Info

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Withdrawn
Application number
EP03022972A
Other languages
German (de)
English (en)
Other versions
EP1424880A3 (fr
Inventor
Bernd Rudolph
Harald Schmitt
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1424880A2 publication Critical patent/EP1424880A2/fr
Publication of EP1424880A3 publication Critical patent/EP1424880A3/fr
Withdrawn legal-status Critical Current

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
    • H05B41/18—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)
EP03022972A 2002-11-13 2003-10-09 Appareil pour alimenter des lampes à décharge Withdrawn EP1424880A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10252836A DE10252836A1 (de) 2002-11-13 2002-11-13 Vorrichtung zum Betreiben von Entlaudungslampen
DE10252836 2002-11-13

Publications (2)

Publication Number Publication Date
EP1424880A2 true EP1424880A2 (fr) 2004-06-02
EP1424880A3 EP1424880A3 (fr) 2008-03-19

Family

ID=32185597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03022972A Withdrawn EP1424880A3 (fr) 2002-11-13 2003-10-09 Appareil pour alimenter des lampes à décharge

Country Status (6)

Country Link
US (1) US6806657B2 (fr)
EP (1) EP1424880A3 (fr)
KR (1) KR20040042849A (fr)
CN (1) CN1505452A (fr)
CA (1) CA2448791A1 (fr)
DE (1) DE10252836A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 (fr) * 1989-01-16 1990-07-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit de commande de lampes à décharge
EP0693864A2 (fr) * 1994-07-21 1996-01-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit pour alimenter une ou plusieurs lampes à décharge basse-pression
EP0798952A1 (fr) * 1996-03-27 1997-10-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit pour l'opération de lampes électriques et procédé d'opération

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US518112A (en) * 1894-04-10 Machine for making shoes or covers for pneumatic tires
US551468A (en) * 1895-12-17 Crab-trap
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
DE3020257C2 (de) * 1979-05-28 1983-01-05 Hitachi, Ltd., Tokyo Rauschsperrenanordnung für PCM-Aufzeichnungs- und -Wiedergabevorrichtung
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
US4564858A (en) * 1981-03-31 1986-01-14 Harris Corporation Television SAW/VSB filter incorporating receiver equalizer
US4547705A (en) * 1982-03-20 1985-10-15 Tdk Corporation Discharge lamp lightening device
US4581639A (en) * 1983-10-17 1986-04-08 Tektronix, Inc. Method and apparatus for monitoring suitability of a transmission path for transmission of digital data signals
US4535352A (en) * 1984-04-16 1985-08-13 At&T Bell Laboratories Technique for generating semi-compatible high definition television signals for transmission over two cable TV channels
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 (fr) * 1989-12-29 1995-09-27 Laboratoires D'electronique Philips Système de codage de signaux numériques destinés à être transmis et/ou stockés et système de décodage correspondant
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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 (fr) * 1989-01-16 1990-07-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit de commande de lampes à décharge
EP0693864A2 (fr) * 1994-07-21 1996-01-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit pour alimenter une ou plusieurs lampes à décharge basse-pression
EP0798952A1 (fr) * 1996-03-27 1997-10-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit pour l'opération de lampes électriques et procédé d'opération

Also Published As

Publication number Publication date
CA2448791A1 (fr) 2004-05-13
CN1505452A (zh) 2004-06-16
DE10252836A1 (de) 2004-05-27
EP1424880A3 (fr) 2008-03-19
KR20040042849A (ko) 2004-05-20
US6806657B2 (en) 2004-10-19
US20040090193A1 (en) 2004-05-13

Similar Documents

Publication Publication Date Title
EP0185179B1 (fr) Circuit d'allumage pour une lampe à décharge à basse pression
EP1286572B1 (fr) Ballast pour alimenter au moins une lampe à décharge basse-pression
DE2116950C3 (de) Schaltungsanordnung zum Zünden und zum Betrieb von Gasentladungslampen
DE3901111A1 (de) Schaltungsanordnung zum betrieb von entladungslampen
DE2751464A1 (de) Starter zum zuenden einer gas- und/oder dampfentladungslampe
EP1836882B1 (fr) Ballast electronique
EP1938670B1 (fr) Ballaste electronique et procede pour faire fonctionner une lampe electrique
EP0054301B1 (fr) Dispositif d'allumage pour lampe à décharge à basse pression
EP1467474A2 (fr) Circuit d'interface pour opérer des charges capacitives
EP2252133A2 (fr) Agencement de commutation destiné au fonctionnement d'une lampe à décharge basse pression et procédé correspondant
EP1424880A2 (fr) Appareil pour alimenter des lampes à décharge
DE4100349C2 (de) Elektronisches Vorschaltgerät
DE60122192T2 (de) Schaltungsanordnung
DE3504803C2 (fr)
DE10252834A1 (de) Vorrichtung zum Betreiben von Entladungslampen mittels eines Transformators mit vier Wicklungen und entsprechendes Verfahren
EP0519220A1 (fr) Ballast avec temps de chauffage commandé
DE3910738A1 (de) Vorschaltgeraet fuer eine direkt geheizte entladungslampe
EP1377136A2 (fr) Dispositif pour alimenter des lampes à décharge
DE2808261C3 (de) Schaltungsanordnung zum Zünden und zum Betrieb einer Leuchtstofflampe mit vorheizbaren Elektroden an einem transistorisierten Wechselrichter
EP0629104B1 (fr) Circuit pour limiter le courant continu decrête et/ou le courant d'appel par l'allumage d'une lampe à décharge
EP1201106B1 (fr) Ballast electronique
DE962098C (de) Schaltung fuer Beleuchtungsvorrichtungen mit mindestens einer Warmkathoden-Fluoreszenzlampe und mit Vorschalt- und Schwingdrosselspulen und Seriekondensator
WO1998009483A1 (fr) Allast electronique pour lampes a decharge
DE3536300C2 (fr)
DE4245092B4 (de) Vorschaltgerät für mindestens ein parallel betriebenes Gasentladungslampen-Paar

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

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

AKX Designation fees paid
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20080920

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566