EP0699016A2 - Circuit pour alimenter des lampes à décharge basse pression - Google Patents

Circuit pour alimenter des lampes à décharge basse pression Download PDF

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Publication number
EP0699016A2
EP0699016A2 EP95112518A EP95112518A EP0699016A2 EP 0699016 A2 EP0699016 A2 EP 0699016A2 EP 95112518 A EP95112518 A EP 95112518A EP 95112518 A EP95112518 A EP 95112518A EP 0699016 A2 EP0699016 A2 EP 0699016A2
Authority
EP
European Patent Office
Prior art keywords
circuit
lamp
capacitor
low
pressure discharge
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.)
Ceased
Application number
EP95112518A
Other languages
German (de)
English (en)
Other versions
EP0699016A3 (fr
Inventor
Anton Zuchtriegel
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 EP0699016A2 publication Critical patent/EP0699016A2/fr
Publication of EP0699016A3 publication Critical patent/EP0699016A3/fr
Ceased 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
    • H05B41/14—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

Definitions

  • the invention relates to a circuit arrangement for the high-frequency operation of one or more low-wattage low-pressure discharge lamps connected in series with one another in accordance with the preamble of claim 1.
  • this circuit arrangement is that the half-bridge circuit and the intermediate circuit capacitor required in such switching power supplies generate harmonics in the network in parallel with the DC output of the line rectifier.
  • this mains current harmonic content must comply with class C of the regulations for ballasts or converters with a power consumption of more than 25 W from 1996 and with class D of the regulations for compact lamps, ballasts and adapters with a power consumption of less than or equal to 25 W from 1998.
  • ballasts for lamps larger than 25 W require DC link capacitors with higher capacities.
  • active harmonic filter circuits in the form of complex pump circuits with capacitors and diodes are required for these lamps in order to be able to meet the IEC regulations of class C.
  • Such a circuit arrangement is e.g. described in DE-OS 36 23 749. These active circuits also result in additional radio interference, which can only be prevented with a high expenditure on components.
  • the object of the invention is to provide a circuit arrangement for operating low-wattage low-pressure discharge lamps, i.e. to create less than or equal to 25 W, which keeps the mains harmonic content below the maximum values specified in class D of the IEC publications.
  • the circuitry required for this should be as small and inexpensive as possible.
  • the harmonic filter circuit according to the invention consisting of two diodes and two capacitors ensures safe operation of the half-bridge generator in the zero crossing of the mains sine voltage.
  • the circuit does not work actively like the pump circuits listed above, but passively, so that only slight radio interference occurs and the expenditure on components for radio interference suppression can be kept low.
  • the circuit also manages with relatively low capacitance values in the DC link. Inexpensive film capacitors can therefore be used as the intermediate circuit capacitor.
  • the harmonic filter circuit consisting of the two diodes and the two capacitors can be implemented inexpensively in a small space, since film capacitors can also be used as capacitors, which also (compared to electrolytic capacitors) have a higher "long-term temperature stability".
  • the harmonic filter circuit also enables the coupling capacitor to be saved in series with the resonance inductance in the series resonant circuit, since the further capacitor of the harmonic filter circuit, in parallel with the diodes, also takes on the task of the coupling capacitor.
  • the circuit arrangement additionally has a harmonic filter circuit 5, two diodes D1, D2 being connected in series and in the direct current blocking direction in the connection between the positive pole of the mains rectifier 2 and the second electrode E2 of the low-pressure discharge lamp LP1.
  • the tap M2 is connected between the two diodes D1, D2 via a capacitor C1 to the negative pole of the mains rectifier 2 and a further capacitor C2 is connected in parallel with the two diodes D1, D2.
  • FIG. 2 shows the exact circuit diagram of the circuit arrangement according to the invention with harmonic filter circuit for operating a low-pressure discharge lamp in accordance with the block diagram in FIG. 1.
  • a filter choke FD1, FD2 and a resistor R1 are connected to each supply line in parallel to the filter choke FD1.
  • the mains rectifier with diodes D3 to D6 follows this high-frequency filter.
  • the self-controlling half-bridge circuit consists of the two transistors T1, T2, the series resistors R3 to R6, the control transformer and the starting generator with the resistors R2, R7, the starting capacitor C4, the diode D7 and the diac DC.
  • the control transformer works on the feedback principle and is made up of the primary winding RKA and the two secondary windings RKB and RKC.
  • the lamp LP1 is connected with a connection of the electrode E1 to the center tap M1 between the two transistors T1, T2 and with a connection of the other electrode E2 to the positive pole of the mains rectifier.
  • a series resonance circuit comprising resonance inductance L1 and resonance capacitor C6 is provided, resonance inductance L1 being connected between the primary winding RKA of the control transformer and the corresponding connection of electrode E1 and resonance capacitor C6 between the connections of electrodes E1 and E2 on the heating circuit side.
  • An intermediate circuit capacitor C3 is also located parallel to the switching paths of the transistors T1, T2.
  • the capacitor C5 in parallel Switching path of transistor T1 is used for radio interference suppression (trapezoidal capacitor).
  • a PTC thermistor R8 is connected in parallel with the resonance capacitor C6 in order to improve the preheating.
  • the additional harmonic filter circuit consists of two diodes D1, D2, which are connected in series and in the DC blocking direction between the positive pole of the mains rectifier and the corresponding connection of the electrode E2 of the low-pressure discharge lamp LP1.
  • the tap M2 between the two diodes D1, D2 is connected via a capacitor C1 to the negative pole of the mains rectifier.
  • a further capacitor C2 is connected in parallel with the diodes D1, D2.
  • the diode D2 ensures that the capacitor C1, which acts as a backup capacitor, is charged via the lamp circuit.
  • the charge of the backup capacitor C1 is passed via the diode D1 to the DC link and now together with the charge of the DC link capacitor C3 ensures that there is a sufficiently high supply voltage to keep the half-bridge circuit in operation even when the AC line voltage crosses zero.
  • the further capacitor C2 has the task of enabling the lamp current in the negative direction and at the same time acts as a coupling capacitor.
  • the circuitry of the lamps with the circuit arrangement is by a circuitry as shown in box A 'of FIG , to replace.
  • the electrode E1 'of the first lamp LP1' is also connected to the center tap M1, while the second electrode E4 'of the second lamp LP2' is connected to the positive pole.
  • a resonance capacitor C6 'or C6''and a PTC thermistor R8' or R8 '' are connected in parallel to each lamp LP1 ', LP2'.
  • the circuit list below shows the circuit elements used for a circuit arrangement according to FIG. 2 for operating an 8 W fluorescent lamp LP1 on 230 V AC voltage: FD1, FD2 1.5 mH, BC D3 - D6 Rectifier bridge circuit B250 C800 D1, D2, D7 1N4005 C1 1 ⁇ F C2, C3 0.22 ⁇ F C4 0.1 ⁇ F C5 1.5 nF C6 3.3 nF DC Diac 1N413M R1 10 k ⁇ R2, R7 820 k ⁇ R3, R4 22 ⁇ R5, R6 1 ⁇ R8 PTC-C890 PTC thermistor RKA 5 turns RKB, RKC 3 turns L1 3.5 mH, EF16 T1, T2 BUD 93

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
EP95112518A 1994-08-26 1995-08-09 Circuit pour alimenter des lampes à décharge basse pression Ceased EP0699016A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4430397A DE4430397A1 (de) 1994-08-26 1994-08-26 Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen
DE4430397 1994-08-26

Publications (2)

Publication Number Publication Date
EP0699016A2 true EP0699016A2 (fr) 1996-02-28
EP0699016A3 EP0699016A3 (fr) 1996-05-01

Family

ID=6526675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112518A Ceased EP0699016A3 (fr) 1994-08-26 1995-08-09 Circuit pour alimenter des lampes à décharge basse pression

Country Status (4)

Country Link
US (1) US5677601A (fr)
EP (1) EP0699016A3 (fr)
JP (1) JPH0878172A (fr)
DE (1) DE4430397A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010027392A1 (fr) * 2008-09-05 2010-03-11 Lutron Electronics Co., Inc. Ballast électronique possédant une topologie de circuit résonant asymétrique
CN110851716A (zh) * 2019-11-11 2020-02-28 上海海事大学 基于最大和谐度的个性化群体推荐方法

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19815623A1 (de) * 1998-04-07 1999-10-14 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen
DE19816965B4 (de) * 1998-04-17 2004-12-02 Vossloh-Schwabe Elektronik Gmbh Vorschaltgerät für Leuchtstofflampen
JP3322392B2 (ja) * 1998-09-24 2002-09-09 松下電器産業株式会社 蛍光ランプ点灯装置
US6072710A (en) * 1998-12-28 2000-06-06 Philips Electronics North America Corporation Regulated self-oscillating resonant converter with current feedback
CN1261250A (zh) * 1999-01-15 2000-07-26 孔宪功 气体放电灯
EP1104980A1 (fr) * 1999-11-30 2001-06-06 Mass Technology (H.K.) Ltd. Ballast électronique pour lampe à décharge
GB2360150B (en) * 2000-03-10 2002-02-20 Microlights Ltd Improvements in and relating to high intensity discharge lighting
US6356034B1 (en) * 2000-03-22 2002-03-12 Regal King Manufacturing Limited Low voltage discharge lamp power supply
DE10343275A1 (de) * 2003-09-18 2005-05-12 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Erzeugen von Wechselspannung aus einer Gleichspannung
DE102005025154A1 (de) * 2005-06-01 2006-12-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanordnung zum Betrieb einer Entladungslampe mit Temperaturausgleich
NO20053519L (no) 2005-07-18 2007-01-19 Thia Medica As Anvendelse av forbindelser som omfatter fettsyrer
DE102005035745A1 (de) * 2005-07-29 2007-02-01 Siemens Ag Zündschaltung zum Zünden einer Entladungslampe und Verfahren zum Zünden der Entladungslampe
DE102005041075A1 (de) * 2005-08-30 2007-03-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zum Betreiben von Hochdrucklampen ohne Heisszünden und Leuchte mit zwei Hochdruckentladungslampen
ES2328657B1 (es) * 2008-05-14 2010-06-25 Farsens, S.L. Demodulador de bajo consumo.
EP2285056B1 (fr) * 2008-05-14 2017-01-04 Farsens, S.L. Démodulateur basse consommation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623749A1 (de) 1986-07-14 1988-01-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb von niederdruckentladungslampen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6474057A (en) * 1987-09-11 1989-03-20 Toshiba Electric Equip Voltage converter
US5068573A (en) * 1990-09-20 1991-11-26 North American Philips Corporation Power supply with energy storage for improved voltage regulation
JPH06245530A (ja) * 1993-02-23 1994-09-02 Matsushita Electric Works Ltd 電源装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623749A1 (de) 1986-07-14 1988-01-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb von niederdruckentladungslampen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010027392A1 (fr) * 2008-09-05 2010-03-11 Lutron Electronics Co., Inc. Ballast électronique possédant une topologie de circuit résonant asymétrique
US8067902B2 (en) 2008-09-05 2011-11-29 Lutron Electronics Co., Inc. Electronic ballast having a symmetric topology
CN110851716A (zh) * 2019-11-11 2020-02-28 上海海事大学 基于最大和谐度的个性化群体推荐方法
CN110851716B (zh) * 2019-11-11 2022-06-24 上海海事大学 基于最大和谐度的个性化群体推荐方法

Also Published As

Publication number Publication date
EP0699016A3 (fr) 1996-05-01
DE4430397A1 (de) 1996-02-29
US5677601A (en) 1997-10-14
JPH0878172A (ja) 1996-03-22

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