EP0383831A1 - Schaltungsanordnung für die zündung und den betrieb von gasentladungslampen. - Google Patents
Schaltungsanordnung für die zündung und den betrieb von gasentladungslampen.Info
- Publication number
- EP0383831A1 EP0383831A1 EP89900168A EP89900168A EP0383831A1 EP 0383831 A1 EP0383831 A1 EP 0383831A1 EP 89900168 A EP89900168 A EP 89900168A EP 89900168 A EP89900168 A EP 89900168A EP 0383831 A1 EP0383831 A1 EP 0383831A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- capacitor
- circuit
- parallel
- gas discharge
- series
- 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
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
- H05B41/02—Details
- H05B41/04—Starting switches
- H05B41/042—Starting switches using semiconductor devices
-
- 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
Definitions
- the invention relates to a circuit arrangement for the ignition and operation of gas discharge lamps, in particular metal vapor lamps.
- ballasts for gas discharge lamps have been known for a long time.
- Each of them uses the glow starter arranged parallel to the lamp for ignition and the choke in series with the gas discharge lamp to limit the current during operation.
- glow starter and choke there is no flicker-free immediate start and the lamp also does not burn stably.
- the influence of mains voltage fluctuations on the luminous flux of the lamp is also not neglected. Since the glow starter has a mechanical switch, which is a thermal bimetal switch, the risk of its failure is relatively high.
- the object of the invention is therefore to create an electronic ballast especially for metal vapor lamps which require a high ignition voltage in the range from 2 to 5 kV. i
- the task is; solved by the invention. This is characterized in that on a rectified 13
- Voltage preferably the line voltage rectified via a bridge rectifier, a buffer capacitor, preferably an electrolytic capacitor, to which a choke-capacitor series circuit is connected in parallel, the capacitor being an electronic switch, preferably a transistor or thyristor, and a free-wheeling diode belonging to the electronic switch is connected in parallel, and that the gas discharge lamp provided with a parallel capacitor is connected to the parallel circuit of capacitor, electronic switch and free-wheeling diode via a further choke-capacitor series circuit.
- the ignition circuit and the supply circuit are combined and can be viewed as one unit. A separate ignition circuit is therefore not necessary.
- the circuit also works independently of the supply voltage.
- the gas discharge lamp is always supplied with constant power. This also applies if the lamp voltage changes, which increases with the age of the lamp.
- One embodiment of the invention is that a further choke is provided in series with the capacitor, electronic switch and freewheeling diode in parallel. This allows the size of the two existing chokes to be kept small.
- the choke of the further choke-capacitor series circuit is arranged in series with the parallel circuit comprising a capacitor, an electronic switch and a freewheeling diode. This measure makes the ballast according to the invention particularly suitable for gas discharge lamps with an ignition voltage below 2 kV. _ 3 _.
- Fig. 1 shows the basic circuit of the electronic ballast
- Fig. 2 shows the extended circuit with three chokes
- Fig. 3 shows the circuit for lamps with an ignition voltage below 2 kV.
- a direct voltage reaches the terminals 1, 2, which is normally the mains voltage rectified by means of a bridge rectifier.
- a buffer or smoothing capacitor C4 is connected to this DC voltage.
- a choke capacitor series circuit L1, Cl is connected in parallel to the buffer capacitor C4 in the circuit in FIG. 1.
- the capacitor Cl of this series circuit from L1, Cl is an electronic switch. S, which is usually a transistor or thyristor, and a free-wheeling diode D connected in parallel.
- S which is usually a transistor or thyristor, and a free-wheeling diode D connected in parallel.
- the capacitor C1 is arranged in parallel with a second inductor-capacitor series circuit L2, L3 with the gas discharge lamp L.
- the gas discharge lamp L also has a parallel capacitor C2.
- the circuit in FIG. 2 is basically identical to that in FIG. 1, but a third inductor L3 has also been introduced. This is arranged in series with the capacitor C1.
- FIG. 3 A further embodiment variant of the electronic ballast according to the invention is shown in FIG. 3. Here the capacitor C3 throttle L2 removed. Only the two chokes L1, L3 are thus provided in this circuit.
- circuits shown in the three figures are based on a series resonance circuit, one each
- the main resonant circuit consists of the reactor L1 and the capacitor Cl.
- this is constructed in FIGS. 2 and 3 with the two chokes L1, L3 and the capacitor C1. 1 and 2 form the choke L2 and the two capacitors C2, C3 and in FIG. 3, since the choke L2 is not present, the choke L3 belongs to the load circuit.
- the gas discharge lamp L represents the consumer.
- the electronic switch S must excite the respective series resonance circuit in a defined manner.
- the smoothing capacitor C4 must be dimensioned such that it always provides the uninterruptible supply voltage that is necessary for the resonance circuit. For a stable vibration behavior of the
- the throttle L3 takes over the above task of the throttle L2.
- the additional choke L3 in FIG. 2 is necessary for fine-tuning the series resonant circuit in the case of unstable consumers.
- the negative potential of the DC voltage was chosen as the common reference point. It could also be called common reference point, the positive potential can be used, the function of the circuit being completely preserved.
- the gas discharge lamp Before ignition or at the time of ignition, the gas discharge lamp represents a high-impedance load.
- the circuits operate as up-converters or as high-voltage ignition generators, with several kV high voltages being generated depending on the dimensions.
- the frequency-determining components in the series resonance circuit at the time of ignition are the capacitances of the capacitors C1, C2, C3 in all three circuits, plus the inductance of the inductor L2 in FIG. 1, the inductance of the inductors L2, L3 in FIG. 2 and FIG. 3 the inductance of the choke L3.
- Resonance circuits when ignited are many times that of the respective main resonant circuit.
- a high voltage of several kV is generated on the gas discharge lamp L and on the capacitor C2 itself, as a result of which the gas discharge lamp L ignites.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0334887A AT397326B (de) | 1987-12-18 | 1987-12-18 | Schaltungsanordnung für die zündung und den betrieb von gasentladungslampen |
AT3348/87 | 1987-12-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0383831A1 true EP0383831A1 (de) | 1990-08-29 |
EP0383831B1 EP0383831B1 (de) | 1994-01-26 |
Family
ID=3549182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89900168A Expired - Lifetime EP0383831B1 (de) | 1987-12-18 | 1989-07-05 | Schaltungsanordnung für die zündung und den betrieb von gasentladungslampen |
Country Status (11)
Country | Link |
---|---|
US (1) | US5057752A (de) |
EP (1) | EP0383831B1 (de) |
JP (1) | JPH03501790A (de) |
AT (1) | AT397326B (de) |
AU (1) | AU619236B2 (de) |
DE (1) | DE3887527D1 (de) |
DK (1) | DK147990D0 (de) |
FI (1) | FI93297C (de) |
HU (1) | HU206175B (de) |
NO (1) | NO174449C (de) |
WO (1) | WO1989006085A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5339004A (en) * | 1991-10-02 | 1994-08-16 | First Lighting, Inc. | Regulating ballast with power factor correction for high-frequency gaseous discharge lamps |
US5426350A (en) * | 1993-11-18 | 1995-06-20 | Electric Power Research Institute, Inc. | High frequency transformerless electronics ballast using double inductor-capacitor resonant power conversion for gas discharge lamps |
US5459377A (en) * | 1993-12-28 | 1995-10-17 | Yue Zheng | Method for starting gas-conducting lamp and lamp for carrying out the method |
DE19530746A1 (de) * | 1995-08-22 | 1997-02-27 | Bosch Gmbh Robert | Schaltungsanordnung zum Betrieb einer Hochdruck-Gasentladungslampe mit Wechselstrom |
US5798615A (en) * | 1996-08-30 | 1998-08-25 | Unitrend Power Technology, Corp. | Universal high intensity discharge electronic starter |
US6147455A (en) * | 1999-06-02 | 2000-11-14 | General Electric Company | Gas discharge lamp ballast circuit with electronic starter |
US6153983A (en) * | 1999-07-21 | 2000-11-28 | General Electric Company | Full wave electronic starter |
US6597128B2 (en) | 2001-10-03 | 2003-07-22 | Hubbell Incorporated | Remote discharge lamp ignition circuitry |
JP4697076B2 (ja) * | 2006-07-12 | 2011-06-08 | 富士ゼロックス株式会社 | 画像形成装置およびその交換部品 |
WO2012164588A1 (en) * | 2011-05-31 | 2012-12-06 | Giacomo Srl | High-efficiency electronic device for turning on and power supplying of lamps |
CN112822819A (zh) * | 2021-02-04 | 2021-05-18 | 深圳市明微电子股份有限公司 | 全电压led线性恒流驱动电路及灯具 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2057795A (en) * | 1979-08-07 | 1981-04-01 | Eleco Ltd | Improvements in or relating to operating circuits for electric discharge lamps |
AT369609B (de) * | 1980-09-11 | 1983-01-25 | Elger Elektro Neon | Schaltungsanordnung fuer den betrieb von gasentladungslampen |
DE3108547A1 (de) * | 1981-03-06 | 1982-10-07 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | "zuendschaltung fuer eine hochdruckmetalldampfentladungslampe" |
DE3327030A1 (de) * | 1983-07-27 | 1985-02-07 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zum betrieb von hochdruckgasentladungslampen |
DE3420229A1 (de) * | 1984-05-30 | 1985-12-05 | Frank 3013 Barsinghausen Hansmann | Schaltungsanordnung zum betrieb von metalldampf-entladungslampen |
US4683404A (en) * | 1986-09-29 | 1987-07-28 | Cooper Industries | Starting circuit and apparatus for high pressure sodium lamps |
GB2204751B (en) * | 1987-04-22 | 1991-06-26 | Davis Group Ltd | Discharge lamp circuits |
EP0337554A1 (de) * | 1988-04-13 | 1989-10-18 | Koninklijke Philips Electronics N.V. | Schaltungsanordnung |
-
1987
- 1987-12-18 AT AT0334887A patent/AT397326B/de not_active IP Right Cessation
-
1988
- 1988-12-16 HU HU89392A patent/HU206175B/hu not_active IP Right Cessation
- 1988-12-16 JP JP1500275A patent/JPH03501790A/ja active Pending
- 1988-12-16 DE DE89900168T patent/DE3887527D1/de not_active Expired - Fee Related
- 1988-12-16 US US07/474,802 patent/US5057752A/en not_active Expired - Fee Related
- 1988-12-16 WO PCT/AT1988/000113 patent/WO1989006085A1/de active IP Right Grant
- 1988-12-16 AU AU27953/89A patent/AU619236B2/en not_active Ceased
-
1989
- 1989-07-05 EP EP89900168A patent/EP0383831B1/de not_active Expired - Lifetime
-
1990
- 1990-06-14 FI FI902988A patent/FI93297C/fi not_active IP Right Cessation
- 1990-06-15 DK DK147990A patent/DK147990D0/da unknown
- 1990-06-15 NO NO902691A patent/NO174449C/no unknown
Non-Patent Citations (1)
Title |
---|
See references of WO8906085A1 * |
Also Published As
Publication number | Publication date |
---|---|
NO902691L (no) | 1990-06-15 |
HUT58437A (en) | 1992-02-28 |
DE3887527D1 (de) | 1994-03-10 |
FI902988A0 (fi) | 1990-06-14 |
FI93297B (fi) | 1994-11-30 |
HU206175B (en) | 1992-08-28 |
JPH03501790A (ja) | 1991-04-18 |
DK147990A (da) | 1990-06-15 |
ATA334887A (de) | 1993-07-15 |
AT397326B (de) | 1994-03-25 |
AU619236B2 (en) | 1992-01-23 |
HU890392D0 (en) | 1991-11-28 |
NO902691D0 (no) | 1990-06-15 |
NO174449C (no) | 1994-05-04 |
WO1989006085A1 (en) | 1989-06-29 |
AU2795389A (en) | 1989-07-19 |
EP0383831B1 (de) | 1994-01-26 |
NO174449B (no) | 1994-01-24 |
US5057752A (en) | 1991-10-15 |
DK147990D0 (da) | 1990-06-15 |
FI93297C (fi) | 1995-03-10 |
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