EP0629104B1 - Schaltungsanordnung zur Begrenzung des Gleichstromscheitelwertes und/oder des Anlaufwechselstromes nach dem Einschalten einer Entladungslampe - Google Patents
Schaltungsanordnung zur Begrenzung des Gleichstromscheitelwertes und/oder des Anlaufwechselstromes nach dem Einschalten einer Entladungslampe Download PDFInfo
- Publication number
- EP0629104B1 EP0629104B1 EP94107985A EP94107985A EP0629104B1 EP 0629104 B1 EP0629104 B1 EP 0629104B1 EP 94107985 A EP94107985 A EP 94107985A EP 94107985 A EP94107985 A EP 94107985A EP 0629104 B1 EP0629104 B1 EP 0629104B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- arrangement according
- switching
- choke
- circuitry arrangement
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims 4
- 239000007858 starting material Substances 0.000 description 9
- 230000002411 adverse Effects 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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
- H05B41/02—Details
- H05B41/04—Starting switches
- H05B41/042—Starting switches using semiconductor devices
- H05B41/044—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes
Definitions
- the invention relates to a circuit arrangement for limiting the DC peak value and the starting alternating current after switching on one Discharge lamp according to the preamble of claim 1.
- a corresponding circuit arrangement is, for example, from FR-A-2 383 576 known.
- This document describes an ignition arrangement for gas discharge lamps, where a current limiting choke in series with a series resistor to one igniting gas discharge lamp is connected. There is also a capacitor present, which together with the choke a series resonance circuit for igniting the Gas discharge lamp forms.
- this series resistor has no impedance, i.e. he is not present at all, while according to the other case the series resistor is one has an impedance comparable to the impedance of the inductor, which clearly leads to a leads to softer ignition of the gas discharge lamp.
- the ignition or. Ballasts for discharge lamps operated with alternating current usually contain a choke to limit the current.
- the choke has a relatively high direct current a negligible superimposed AC component flows.
- This has in Extreme case that the operating point of the throttle up to Saturation range shifts. That means the throttle, which is only one very much anyway has low DC resistance, in this case also a low one AC resistance. This in turn has a very high one DC peak value, which adversely affects the life of the lamps can impact.
- the case described above applies in particular to High pressure discharge lamps.
- the invention has for its object a circuit arrangement of the beginning described type that allows a throttle with lower Dimensions to use.
- the throttle additional current limiting circuit part available which after switching on the AC power source passes a more limited current in a first state and after a certain time switches to a second state in which it passes a less limited current.
- the current limiting circuit part thus relieves the on-phase Current limiting function of the choke with the result that the latter is dimensioned smaller can be.
- Switching the current limiting circuit part from the one state to the second state can either by taking advantage of the in the start-up phase on a the components of the ballast. Ignitor occurring by or a timing device. Refinements of those specified in claim 1 basic solution to the problem specified in subclaims 2 to 13.
- a high-pressure discharge lamp HL is connected to an ignition device ZG AC power source U connected.
- the ignitor ZG contains one for Current-limiting choke L is another one connected in series with the latter Current limiting part B.
- the high-pressure discharge lamp acts at first like a rectifier, i.e. through the lamp flows a direct current superimposed with an alternating current component.
- the throttle L practically not only forms a significant DC resistance, but it will through the direct current flowing through it also into saturation driven, which also reduces their AC resistance when they are not is appropriately large.
- the throttle is on Current limiting circuit part B connected in series, which not only in the start-up phase the starting alternating current, but also the DC peak value. After Expiration of a certain time, within which the rectifying effect of the high-pressure discharge lamp subsides, the current limiting circuit part B then switches from that first state into a second state, in which it flows through Electricity less limited. Since the current is now significantly lower DC component has an effective current limitation in this case by Throttle L.
- a low pressure gas discharge lamp NL is on via a ballast VG an AC power source U connected. Is parallel to the gas discharge lamp NL an ignition starter Z. After closing the ignition starter Z, one occurs at this Glow discharge, causing it to warm up and close. After closing the Ignition starter Z is practically the full line voltage U at the ballast VG, since the Heating coils of the gas discharge lamp NL are still cold and have a low resistance to have. This leads to a high starting alternating current through the ballast VG.
- the ballast VG contains the usual choke L as well as one with the choke in series switched current limiting part B.
- the current limiting part B switches as in Described in connection with Figure 1, after a certain time of one first state, in which it limits the current flowing through, into one second state, in which there is less flow through the current limited.
- the throttle L can therefore be smaller be dimensioned as without power supply circuit part B.
- the current limiting circuit part consists of a series resistor RV and a temperature-sensitive switch S connected in parallel with it
- Switch S can be, for example, a bimetal switch that opens when cold and closes when heated.
- the arrangement is chosen so that in the Series resistor RV generated by the current flowing through the heat Switch S is transmitted.
- the inductor L can also be in thermal contact be with the switch S.
- the current limiting part according to FIG. 4 still contains a series resistor RH, which is in series with the series resistor RV and parallel to the Throttle L is switched.
- the series resistor RH is also in thermal contact with the switch S.
- the heating resistor RH is different from the embodiment according to 4 parallel to the series circuit comprising the series resistor RV and the inductor L. switched.
- the heating resistor RH serves the same purpose here as in In connection with Figure 4 has been described.
- the current limiting circuit part B for switching the Switch from the first state to the second state a control circuit ST.
- the Switching does not take place here due to heat development on one of the elements, but by the fact that the control circuit switches after a triggers a certain period of time.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Emergency Protection Circuit Devices (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Description
Claims (13)
- Schaltungsanordnung zur Begrenzung des Gleichstromscheitelwertes und/oder des Anlaufwechselstromes nach dem Einschalten einer Entladungslampe (HL; NL), die an einer Wechselstrom-Versorgungsquelle (U) anschließbar ist, mit einer zur Strombegrenzung dienenden Drossel (L) und einem mit der Drossel (L) in Serie geschalteten weiteren Strombegrenzungsschaltungsteil (B),
dadurch gekennzeichnet,
daß das weitere Strombegrenzungsschaltungsteil (B) nach dem Einschalten in einem ersten Zustand einen stärker begrenzten Strom durchläßt und nach Ablauf einer bestimmten Zeit in einen zweiten Zustand umschaltet, in welchem es einen weniger stark begrenzten Strom durchläßt. - Schaltungsanordnung nach Anspruch 1,
dadurch gekennzeichnet,
daß das weitere Strombegrenzungsschaltungsteil (B) einen Vorwiderstand (RV) umfaßt. - Schaltungsanordnung nach Anspruch 2,
dadurch gekennzeichnet,
daß parallel zu dem Vorwiderstand (RV) eine Schaltereinrichtung (S) angeordnet ist, die in dem ersten Zustand des Strombegrenzungsschaltungsteils (B) geöffnet und in dem zweiten Zustand geschlossen ist. - Schaltungsanordnung nach einem der vorhergehenden Ansprüche
dadurch gekennzeichnet,
daß die Schaltereinrichtung (S) temperaturempfindlich ist. - Schaltungsanordnung nach Anspruch 4,
dadurch gekennzeichnet,
daß die temperaturempfindliche Schaltereinrichtung (S) ein Bimetallschalter ist. - Schaltungsanordnung nach Anspruch 4 oder 5,
dadurch gekennzeichnet,
daß der Vorwiderstand (RV) ein Heizwiderstand ist, der aufgrund seiner Wärmeentwicklung die zunächst offene Schaltereinrichtung (S) schließt. - Schaltungsanordnung nach einem der Ansprüche 4 bis 6,
dadurch gekennzeichnet,
daß die Drossel (L) in der Schaltereinrichung (S) thermisch derart gekoppelt ist, daß die Drossel (L) aufgrund ihrer Wärmeentwicklung die zunächst offene Schaltereinrichtung (S) schließt und/oder im geschlossenen Zustand hält. - Schaltungsanordnung nach einem der Ansprüche 4 bis 7,
dadurch gekennzeichnet,
daß eine zusätzliche Heizeinrichtung vorgesehen ist, die die zunächst offene Schaltereinrichtung (S) aufgrund ihrer Wärmeentwicklung schließt und/oder geschlossen hält. - Schaltungsanordnung nach Anspruch 8,
dadurch gekennzeichnet,
daß die zusätzliche Heizeinrichtung einen Heizwiderstand (RH) umfaßt. - Schaltungsanordnung nach Anspruch 9,
dadurch gekennzeichnet,
daß der zusätzliche Heizwiderstand (RH) parallel zu der Drossel (L) geschaltet ist. - Schaltungsanordnung nach Anspruch 9,
dadurch gekennzeichnet,
daß der zusätzliche Heizwiderstand (RH) parallel zu der aus dem Vorwiderstand (RV) und der Drossel (L) bestehenden Serienschaltung geschaltet ist. - Schaltungsanordnung nach Anspruch 3,
dadurch gekennzeichnet,
daß eine Steuereinrichtung (ST) zur Steuerung der Schaltereinrichtung (S) vorgesehen ist. - Schaltungsanordnung nach Anspruch 12,
dadurch gekennzeichnet,
daß die Steuereinrichtung (ST) die zunächst offene Schaltereinrichtung (S) nach Ablauf der bestimmten Zeit schließt.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4319501 | 1993-06-11 | ||
| DE4319501 | 1993-06-11 | ||
| DE4404658 | 1994-02-14 | ||
| DE4404658A DE4404658A1 (de) | 1993-06-11 | 1994-02-14 | Schaltungsanordnung zur Begrenzung des Gleichstromscheitelwertes und/oder des Anlaufwechselstromes nach dem Einschalten einer Entladungslampe |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0629104A2 EP0629104A2 (de) | 1994-12-14 |
| EP0629104A3 EP0629104A3 (de) | 1995-08-02 |
| EP0629104B1 true EP0629104B1 (de) | 1999-12-15 |
Family
ID=25926712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94107985A Expired - Lifetime EP0629104B1 (de) | 1993-06-11 | 1994-05-24 | Schaltungsanordnung zur Begrenzung des Gleichstromscheitelwertes und/oder des Anlaufwechselstromes nach dem Einschalten einer Entladungslampe |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0629104B1 (de) |
| AT (1) | ATE187863T1 (de) |
| DE (2) | DE4404658A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19515592A1 (de) * | 1995-05-02 | 1996-11-07 | Walter Holzer | Gasentladungslampe mit Schonstart |
| AT12721U1 (de) * | 2011-04-22 | 2012-10-15 | Tridonic Gmbh & Co Kg | Vorrichtung zum betreiben einer hochdruckentladungslampe |
| DE102011055664A1 (de) | 2011-11-24 | 2013-05-29 | Vossloh-Schwabe Deutschland Gmbh | Spannungsversorgungseinrichtung |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1589205C3 (de) * | 1967-09-19 | 1974-11-21 | Fritz Ennenda Glarus Knobel (Schweiz) | Schaltungsanordnung für den kapazitiven Betrieb von Niederspannungs-Leuchtstofflampen |
| DE2451786A1 (de) * | 1974-10-31 | 1976-05-06 | Bosch Gmbh Robert | Schaltung fuer leuchtstofflampen |
| US3996495A (en) * | 1975-07-25 | 1976-12-07 | North American Philips Corporation | High efficiency ballast system for electric discharge lamps |
| DE2710066A1 (de) * | 1977-03-08 | 1978-09-14 | Helmut Dipl Chem Ulrich | Leuchtstofflampen-startschaltung und -speiseschaltung |
| JPS6019637B2 (ja) * | 1981-12-29 | 1985-05-17 | 松下電工株式会社 | 放電灯始動装置 |
| DE3911758A1 (de) * | 1988-09-06 | 1990-03-15 | Stefan Tupi | Vorschaltgeraet |
| DE3912457A1 (de) * | 1989-04-15 | 1990-10-18 | Erzmoneit Dorit | Schaltungsanordnung zur leistungsanpassung ueber stromabhaengige widerstaende und schaltglieder fuer niederdruckentladungslampen |
| DE9015674U1 (de) * | 1990-11-15 | 1992-03-12 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Getaktetes Schaltnetzteil für den Betrieb einer Entladungslampe |
-
1994
- 1994-02-14 DE DE4404658A patent/DE4404658A1/de not_active Withdrawn
- 1994-05-24 AT AT94107985T patent/ATE187863T1/de not_active IP Right Cessation
- 1994-05-24 EP EP94107985A patent/EP0629104B1/de not_active Expired - Lifetime
- 1994-05-24 DE DE59409000T patent/DE59409000D1/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59409000D1 (de) | 2000-01-20 |
| DE4404658A1 (de) | 1994-12-15 |
| EP0629104A2 (de) | 1994-12-14 |
| EP0629104A3 (de) | 1995-08-02 |
| ATE187863T1 (de) | 2000-01-15 |
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