EP0629104A2 - Circuit pour limiter le courant continu decrête et/ou le courant d'appel par l'allumage d'une lampe à décharge - Google Patents

Circuit pour limiter le courant continu decrête et/ou le courant d'appel par l'allumage d'une lampe à décharge Download PDF

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Publication number
EP0629104A2
EP0629104A2 EP94107985A EP94107985A EP0629104A2 EP 0629104 A2 EP0629104 A2 EP 0629104A2 EP 94107985 A EP94107985 A EP 94107985A EP 94107985 A EP94107985 A EP 94107985A EP 0629104 A2 EP0629104 A2 EP 0629104A2
Authority
EP
European Patent Office
Prior art keywords
current
circuit arrangement
arrangement according
switch device
state
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
Application number
EP94107985A
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German (de)
English (en)
Other versions
EP0629104B1 (fr
EP0629104A3 (fr
Inventor
Carsten Dr. Ruchholtz
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.)
Tridonic Bauelemente GmbH
Original Assignee
Tridonic Bauelemente GmbH
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 Tridonic Bauelemente GmbH filed Critical Tridonic Bauelemente GmbH
Publication of EP0629104A2 publication Critical patent/EP0629104A2/fr
Publication of EP0629104A3 publication Critical patent/EP0629104A3/fr
Application granted granted Critical
Publication of EP0629104B1 publication Critical patent/EP0629104B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B41/16—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 a discharge lamp according to the preamble of claim 1.
  • Ballasts for discharge lamps operated with alternating current generally contain a choke for current limitation.
  • the discharge lamps act almost like rectifiers for the first time after ignition. This means that a relatively high direct current flows through the choke with a negligible superimposed alternating current component. In extreme cases, this has the consequence that the operating point of the throttle shifts into the saturation range.
  • the choke which has only a very low DC resistance anyway, also represents a low AC resistance in this case. This in turn results in a very high DC peak value, which can adversely affect the life of the lamps.
  • the case described above applies in particular to high-pressure discharge lamps.
  • the invention has for its object to provide a circuit arrangement of the type described, which allows a choke to be used with smaller dimensions.
  • the object is achieved according to the invention by a further current limiting circuit part connected in series with the inductor, which passes a more limited current in a first state after switching on the AC supply source and, after a certain time, switches to a second state in which it is less passes very limited current.
  • the current limiting circuit part thus relieves the current limiting function of the choke in the switch-on phase, with the result that the latter can be dimensioned smaller.
  • the switchover of the current limiting circuit part from one state to the second state can either be made use of in the switch-on phase on one of the components of the ballast or. Ignitor occurring heating or by a timing device. Refinements of the basic solution to the problem specified in claim 1 are given in subclaims 2 to 13.
  • a high-pressure discharge lamp HL is connected to an alternating current source U via an ignition device ZG.
  • the igniter ZG contains a further current limiting part B connected in series with the latter.
  • a current limiting circuit part B is connected in series with the choke, which not only limits the starting alternating current in the starting phase, but also the direct current peak value. After a certain period of time, within which the rectifying effect of the high-pressure discharge lamp subsides, the current limiting circuit part B then switches from the first state to a second state in which it limits the current flowing through less. Since the current now has a significantly lower DC component, the current is effectively limited in this case by the choke L.
  • a low-pressure gas discharge lamp NL is connected to an alternating current source U via a ballast VG.
  • An ignition starter Z is located parallel to the gas discharge lamp NL. After the ignition starter Z has been closed, a glow discharge occurs on it, as a result of which it heats up and closes. After the ignition starter Z has been closed, practically the full mains voltage U is at the ballast VG, since the heating filaments of the gas discharge lamp NL are still cold and have a low resistance. This leads to a high starting alternating current through the ballast VG.
  • the ballast VG contains the usual choke L and a current limiting part B connected in series with the choke. The current limiting part B switches, as described in connection with FIG.
  • the inductor L can therefore be dimensioned smaller than without a power supply circuit part B.
  • the ignition starter Z cools down after closing and finally opens again, which in cooperation with the inductor L generates a high ignition pulse which is used to ignite the Gas discharge lamp NL leads. After ignition, the arrangement is in the operating state and a gas discharge current flows through the lamp. The ignition starter Z remains open after ignition, since no further glow discharge occurs on it.
  • the current limiting circuit part consists of a series resistor RV and a temperature-sensitive switch S connected in parallel therewith.
  • the switch S can be, for example, a bimetallic switch which is open in the cold state and closes when heated.
  • the arrangement is chosen such that heat generated by the current flowing through it is transferred to the switch S in the series resistor RV.
  • the inductor L can also be in thermal contact with the switch S.
  • the current limiting part according to FIG. 4 also contains a series resistor RH, which is connected in series with the series resistor RV and in parallel with the inductor L.
  • the series resistor RH is also in thermal contact with the switch S.
  • the heating resistor RH is connected in parallel to the series circuit comprising the series resistor RV and the inductor L.
  • the heating resistor RH serves the same purpose as that described in connection with FIG. 4.
  • the current limiting circuit part B contains a control circuit ST for switching the switch from the first state to the second state.
  • the switchover does not take place here due to heat development on one of the elements, but rather in that the control circuit triggers the switchover after a certain period of time.
  • ohmic resistance RV can of course also be replaced by any equivalent impedance in the individual exemplary embodiments.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP94107985A 1993-06-11 1994-05-24 Circuit pour limiter le courant continu decrête et/ou le courant d'appel par l'allumage d'une lampe à décharge Expired - Lifetime EP0629104B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4319501 1993-06-11
DE4319501 1993-06-11
DE4404658A DE4404658A1 (de) 1993-06-11 1994-02-14 Schaltungsanordnung zur Begrenzung des Gleichstromscheitelwertes und/oder des Anlaufwechselstromes nach dem Einschalten einer Entladungslampe
DE4404658 1994-02-14

Publications (3)

Publication Number Publication Date
EP0629104A2 true EP0629104A2 (fr) 1994-12-14
EP0629104A3 EP0629104A3 (fr) 1995-08-02
EP0629104B1 EP0629104B1 (fr) 1999-12-15

Family

ID=25926712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94107985A Expired - Lifetime EP0629104B1 (fr) 1993-06-11 1994-05-24 Circuit pour limiter le courant continu decrête et/ou le courant d'appel par l'allumage d'une lampe à décharge

Country Status (3)

Country Link
EP (1) EP0629104B1 (fr)
AT (1) ATE187863T1 (fr)
DE (2) DE4404658A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19515592A1 (de) * 1995-05-02 1996-11-07 Walter Holzer Gasentladungslampe mit Schonstart

Family Cites Families (8)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
DE59409000D1 (de) 2000-01-20
DE4404658A1 (de) 1994-12-15
EP0629104B1 (fr) 1999-12-15
EP0629104A3 (fr) 1995-08-02
ATE187863T1 (de) 2000-01-15

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