EP1048190A1 - Ballast electronique pour lampe a decharge - Google Patents

Ballast electronique pour lampe a decharge

Info

Publication number
EP1048190A1
EP1048190A1 EP98964410A EP98964410A EP1048190A1 EP 1048190 A1 EP1048190 A1 EP 1048190A1 EP 98964410 A EP98964410 A EP 98964410A EP 98964410 A EP98964410 A EP 98964410A EP 1048190 A1 EP1048190 A1 EP 1048190A1
Authority
EP
European Patent Office
Prior art keywords
circuit
electronic ballast
gas discharge
lamp
control circuit
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
EP98964410A
Other languages
German (de)
English (en)
Other versions
EP1048190B1 (fr
Inventor
Norbert Primisser
Reinhard BÖCKLE
Stefan Koch
Stefan Rhyner
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.)
Tridonicatco GmbH and Co KG
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 EP1048190A1 publication Critical patent/EP1048190A1/fr
Application granted granted Critical
Publication of EP1048190B1 publication Critical patent/EP1048190B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H05B41/14—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
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions

Definitions

  • the electronic ballast shown in FIG. 10 first comprises a circuit A which is connected to the AC network.
  • This circuit A serves as an RF harmonic filter for reducing the harmonic harmonics of the mains frequency and for radio interference suppression.
  • the three external resistors RIO, R14 and R15 are variable, so that - analogously to the power connection ILC (cf. resistors R13, R16) - a connection of the control circuit completely independent of one another at different times includes a total of three different control variables of the electronic ballast Can be set or controlled using one and the same controller.
  • the setpoints for the control of the three different control variables can be set or predefined depending on the lamp type or the electronic ballast type currently being used.
  • the rectification effect explained above also has the consequence that the more worn electrode, which has a higher work function than the other electrode, heats up more than the other electrode when the gas discharge lamp is started up.
  • the work function is generally the minimum energy required to detach an electron from a metal, in the present case from a lamp electrode.
  • the heating of the lamp electrode described above can become so strong, in particular in the case of lamps with a small diameter, that parts of the lamp glass bulb can melt.
  • FIG. 8b shows a variant of the circuit explained above, which enables a dynamic switchover between a warm and cold start operation.
  • the circuit shown in Fig. 8b corresponds essentially to the circuit shown in Fig. 8a, with the exception, however, that a switch S301 is provided internally at the input terminal NP, via which the supply voltage potential VDD can be applied to the input terminal NP, while externally an RC element consisting of the resistor R22 and capacitor C17 already shown in FIGS. 1 and 2 is connected to the connection NP.
  • the voltage potential present at the input connection NP is monitored by the comparator 301.
  • the operation of the circuit shown in Fig. 8b is as follows.
  • Vrefl 2 of the comparator 301 is.
  • the maximum permissible time between switching to emergency power operation and restarting or restarting the electronic ballast without preheating the lamp electrodes is set to 400 ms.
  • the resistor R22 and the capacitor C17 are to be dimensioned in such a way that the aforementioned period of 400 ms can be observed.
  • any other energy storage circuit can be used, which stores energy depending on the supply voltage potential present at the input terminal NP and discharges with a certain time constant after the supply voltage potential has been disconnected .
  • This energy storage circuit can thus contain any delay elements, as long as there is a defined and known temporal behavior of the delay element or the energy storage circuit.
  • the comparator also monitors the switching on and off of the entire system.
  • the enable signal EN can thus occur asynchronously to all other signals depending on the switching on and off of the overall system, with after the appearance of the enable signal EN, i.e. after inclusion
  • the electronic ballast is switched on again and the individual function blocks of the control circuit IC2 are compared. This comparison is carried out by reading in the respective values for the individual micro fuses. These micro fuses are small fuses that are used, for example, to balance the individual internal power sources.
  • the enable signal EN occurs, the output signal of the function block 300 shown in FIG. 3 is read in, so that it is determined at this point in time whether the connected gas discharge lamps with a cold or warm start in To be put into operation. Overall, in state I the control circuit IC2 is thus initialized.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Organic Insulating Materials (AREA)
  • Discharge Heating (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Glass Compositions (AREA)
  • Furan Compounds (AREA)
EP98964410A 1997-12-23 1998-11-19 Ballast electronique pour lampe a decharge Expired - Lifetime EP1048190B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19757667 1997-12-23
DE19757667 1997-12-23
PCT/EP1998/007426 WO1999034648A1 (de) 1997-12-23 1998-11-19 Elektronisches vorschaltgerät

Publications (2)

Publication Number Publication Date
EP1048190A1 true EP1048190A1 (fr) 2000-11-02
EP1048190B1 EP1048190B1 (fr) 2003-05-07

Family

ID=7853257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98964410A Expired - Lifetime EP1048190B1 (fr) 1997-12-23 1998-11-19 Ballast electronique pour lampe a decharge

Country Status (7)

Country Link
EP (1) EP1048190B1 (fr)
AT (1) ATE240030T1 (fr)
AU (1) AU1962499A (fr)
DE (1) DE59808310D1 (fr)
ES (1) ES2195438T3 (fr)
WO (1) WO1999034648A1 (fr)
ZA (1) ZA9811774B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10134566A1 (de) * 2001-07-16 2003-02-06 Tridonicatco Gmbh & Co Kg Elektronisches Vorschaltgerät mit Vorheizbetrieb
DE10206731B4 (de) * 2002-02-18 2016-12-22 Tridonic Gmbh & Co Kg Lampensensor für ein Vorschaltgerät zum Betrieb einer Gasentladunslampe
DE102005042527B4 (de) * 2005-09-07 2015-10-29 Osram Gmbh Schaltungsanordnung und Verfahren zum Betreiben einer Entladungslampe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1121148B (it) * 1979-06-26 1986-03-26 Siliani Pier Circuito d accensione per tubi fluorescenti e simili con riscaldamento preliminare dei filamenti
US4958108A (en) * 1989-02-14 1990-09-18 Avtech Corporation Universal fluorescent lamp ballast
US5030887A (en) * 1990-01-29 1991-07-09 Guisinger John E High frequency fluorescent lamp exciter
EP0594880B1 (fr) * 1992-10-28 1998-01-28 Knobel Ag Lichttechnische Komponenten Procédé et circuit d'amorçage de lampes fluorescentes lorsque les électrodes de préchauffage ont atteint une température donnée
NL9301694A (nl) * 1993-10-01 1995-05-01 Cm Personnel Participation Bv Electronische voorschakelinrichting voor gasontladingsbuizen.
US5424611A (en) * 1993-12-22 1995-06-13 At&T Corp. Method for pre-heating a gas-discharge lamp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9934648A1 *

Also Published As

Publication number Publication date
WO1999034648A1 (de) 1999-07-08
AU1962499A (en) 1999-07-19
ES2195438T3 (es) 2003-12-01
ATE240030T1 (de) 2003-05-15
DE59808310D1 (de) 2003-06-12
EP1048190B1 (fr) 2003-05-07
ZA9811774B (en) 1999-06-29

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