EP0949852A2 - Circuit d'alimentation de lampes à décharge avec sélection de mode de fonctionnement - Google Patents

Circuit d'alimentation de lampes à décharge avec sélection de mode de fonctionnement Download PDF

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Publication number
EP0949852A2
EP0949852A2 EP99105264A EP99105264A EP0949852A2 EP 0949852 A2 EP0949852 A2 EP 0949852A2 EP 99105264 A EP99105264 A EP 99105264A EP 99105264 A EP99105264 A EP 99105264A EP 0949852 A2 EP0949852 A2 EP 0949852A2
Authority
EP
European Patent Office
Prior art keywords
operating
operating state
circuit
storage device
power supply
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.)
Withdrawn
Application number
EP99105264A
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German (de)
English (en)
Other versions
EP0949852A3 (fr
Inventor
Klaus Fischer
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 EP0949852A2 publication Critical patent/EP0949852A2/fr
Publication of EP0949852A3 publication Critical patent/EP0949852A3/fr
Withdrawn legal-status Critical Current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
    • H05B41/36—Controlling
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/185—Controlling the light source by remote control via power line carrier transmission

Definitions

  • This invention relates to an operating circuit for a load.
  • Discharge lamps especially compact fluorescent lamps, in question.
  • Discharge lamps come with operating circuits and electronic ballasts used, the z. B. a half-bridge oscillator with mains supply have a rectifier and a smoothing capacitor can. The half-bridge oscillator generates a high frequency AC power supply for flicker-free and low-noise operation the discharge lamp.
  • This invention lies on the basis of the described prior art the technical problem underlying an operational circuit, especially for Discharge lamps with switchable by power interruptions Operating conditions and a compared to the cited state of the Technology with regard to the usage properties of a further developed circuit structure specify.
  • a circuit for operation a load in particular a discharge lamp, with an operating state storage device to save an operating state the size representing the load and with a switching device for switching a plurality of operating states of the load, each shorter Interruption of the power supply to the operating circuit activated and in a size other than that represented by the stored size
  • Operating state switches characterized by one of the operating state storage device separate timer circuit for definition a certain time to distinguish longer interruptions of the Power supply from the shorter, the switching device due to longer interruptions to switch to a defined initial operating state is activated.
  • the invention is based on the idea that in this obvious way two functions are combined in one device, which should advantageously be implemented separately. That is why the invention provides for the function Save operating status "and the function Define time threshold for power supply interruptions ", that is, to provide a timer circuit separate from an operating state storage device.
  • a memory can be used for the operating state storage device, which outputs a discrete and therefore always well-defined output signal about the operating state.
  • this is temporal must expire, not easily possible.
  • a further advantage can arise if the output size of the Operating state storage device as a setpoint or to generate a Setpoint is used. Then if the timer function in the operating memory device integrated, this would have the consequence that with short power supply interruptions in the operating state storage device stored size would hardly have changed. But now after a short power supply interruption to another operating state to be switched over, this stored quantity would be the setpoint or no longer suitable for the formation of such.
  • Timer circuit and operating state storage device Timer circuit for example simultaneously to a memory for the coming after a brief future power outage Operating state can be made, but in the actual Operating state storage device stored size for the setpoint formation serves. But it can also be used as an operating state storage device automatically through each time the power supply is interrupted use a trigger signal switching device. This can then by a defined reset signal as the memory content that the initial operating state keep appropriate size. The reset signal is triggered when the timer circuit has a prolonged power supply interruption notes.
  • the timer circuit is constructed capacitively, with a smoothing electrolytic capacitor, which in many cases is on the output side of a line rectifier anyway is provided, which supplies the operating circuit.
  • This smoothing electrolytic capacitor is then already in operation by the line rectifier charged and discharged in the event of power supply interruptions, so that its state of charge can be used to define the time.
  • the discharge of the smoothing electrolytic capacitor when the Power supply can be done with a simple circuit variant Consumption flows of existing circuit parts occur, for example by a consumption current of the operating state storage device.
  • This discharge process is already determined by the circuit structure and thus offers an advantageous embodiment - if the simplicity the circuit is in the foreground.
  • An improved variant of the invention therefore provides to provide a separate discharge resistor with the smoothing electrolytic capacitor a discharge time course and thus the desired Timer function defined.
  • the voltage drop across the discharge resistor (as partial voltage a voltage division) a sufficient supply voltage for above supplied circuit parts results.
  • the time threshold for differentiation is exceeded the shorter of the longer power interruptions itself, for example through the discharge of the smoothing electrolytic capacitor mentioned, already the desired defined initial state of the operating state storage device can result in a reset device be provided which the operating state storage device in the Reset initial state. This also becomes the switching device reset so that when restarting the operating circuit of the specified Initial operating state is present.
  • This reset device is first of all then makes sense if - as already mentioned above and in the exemplary embodiment shown - an operating state storage device is used, that with each power supply interruption, whether longer or shorter, the saved size changed.
  • FIG 1 are the components of the operating circuit essential for the invention drawn, with the representation of the conventional remainder of Operating circuit was dispensed with.
  • C1 is an electrolytic capacitor drawn between the output connections of a mains rectifier to supply the operating circuit is connected to the rectified Smooth tension. From this smoothing electrolytic capacitor supply branches not shown here lead to a transistor half-bridge oscillator circuit, which is a high frequency AC power supply generated for a low pressure gas discharge lamp.
  • the in the Figure drawn lower line at the negative terminal of the electrolytic capacitor C1 is used here as a reference potential for all those shown Components.
  • the electrolytic capacitor C1 also supplies an operating state storage device SP, a so-called toggle flip-flop.
  • an operating state storage device SP a so-called toggle flip-flop.
  • a Toggle flip-flop is the inverting output on the not shown Memory value input fed back, so that the toggle flip-flop at a Edge at the clock input the inverted output signal on the non-inverting Output switches through and thus changes its memory state. It is therefore an alternating switch with each flank binary storage element. If more than two different operating states switched or stored in the operating state storage device SP should be replaced by a binary toggle flip-flop Counter used as the operating state storage device SP.
  • the operating state storage device SP is also after the shutdown the power supply via the electrolytic capacitor C1 for one supplied with voltage for a certain time, namely via the voltage supply connection SPV.
  • the clock input of the operating state storage device SP is at each Power supply interruption controlled in a manner not shown. This changes that in the operating state storage device SP stored size and thus the output signal SPA at each Power supply interruption, regardless of its duration.
  • This Clock input control is done in this embodiment as follows: A drive IC of the oscillator circuit for lamp operation is powered by oscillation during oscillator operation. For the Starting phase before the start of the oscillation there is another supply of the IC, which is connected to the rectifier on the mains side. It is designed that the IC much earlier after a power cut is de-energized as the circuit parts supplied by the electrolytic capacitor C1 in Figure 1. Then the pulse for the clock input control generated by the IC when the power supply is reinstalled.
  • the output signal SPA of the operating state storage device SP becomes a switchover device U, which when starting the operating circuit responding to a power failure the output signal SPA a certain one among at least two different ones Selects operating states.
  • the switching device U can, for example be a controller that uses the output signal SPA as the basis for its setpoint used.
  • a reset device SS is provided.
  • This reset device or start circuit SS is a conventional one Under-voltage lockout circuit, which increases when the also on it supply voltage above a definable threshold a time-limited signal via the SSA output to a reset connection the operating state storage device SP delivers.
  • This reset device is used when the duration of the power supply interruption for a drop in the supply voltage Vs below has provided the threshold value of the reset device SS.
  • This Threshold is set so that it is a supply voltage at the Operating state storage device SP corresponds to its storage size can safely maintain.
  • Figure 1 also shows a voltage-limiting switching element ZD, in simplest case is a zener diode.
  • This switching element ZD ensures that the level of voltage across the electrolytic capacitor C1 does not cause damage the operating state storage device SP, the reset device SS or the switching device U leads.
  • the threshold value of the reset device SS could be so interpret that the discharge of the electrolytic capacitor C1 alone by the Consumption flows of blocks ZD, SS and SP (as well as other ones not shown Circuit elements) discharge at exactly that time causes the threshold value of the reset device SS, which is called the limit between a shorter power interruption (for switching operating status) and a longer power interruption (to restart in the initial state). This time can e.g. B. be one second.
  • a discharge resistor Rb is provided on which is limited by the voltage-limiting circuit element ZD Voltage is present.
  • This discharge resistor Rb carries a current that is larger than the sum of all others discharging the electrolytic capacitor C1 Currents is. This determines the time the supply voltage drops Vs to the threshold value of the reset device SS essentially by the total resistance of the series connection from the discharge resistor Rb and another, in series with the electrolytic capacitor C1 lying resistance Ra.
  • This resistance Ra serves to separate the voltage limited by the block ZD from that on the electrolytic capacitor C1 applied voltage due to the voltage drop of the current flowing through the block ZD.
  • the comparator input of the operating state storage device mentioned above SP is not in the embodiment described here necessary because the under-voltage lockout circuit SS for a defined Border between shorter and longer power supply interruptions worries.
  • Figure 2 illustrates the operation of the circuit according to the invention in one schematic timing diagram.
  • the first line a) is the mains voltage the power supply U (N) plotted that over time three short interruptions after switching on and then three longer interruptions (third longer interruption no longer listed) shows.
  • the second line b) shows the voltage U (C1) on the electrolytic capacitor C1 first that the capacitor C1 after the rectifier switches on the power supply immediately is charged.
  • the Voltage U (C1) with a certain time course, which here is the simplicity is shown linearly. In fact, the timing of this is Embodiment exponential.
  • the voltage-limiting switching element ZD as drawn in line c), with the power supply switched on and due to the shorter interruptions a current I (ZD) continuously through it.
  • the voltage U (C1) drops so far that the limit voltage falls below the switching element ZD, so that the current I (ZD) suddenly stops. It rises with the voltage U (C1) after switching on power supply immediately. From the times within the longer power outages where the exposes voltage-limiting function of the switching element ZD, the falls Voltage Vs across resistor Rb from that through the voltage limiting Switching element ZD given value Vsmax.
  • Vsmax the voltage-limiting Switching element ZD
  • the supply voltage Vs falls below that shown Value Vsmin, which corresponds to the threshold voltage of the reset device SS. Accordingly, the output SSA of the reset device generates SS after switching on the power supply a voltage pulse U (SSA), which is shown in the 5th line d).
  • SSA voltage pulse U
  • the one representing the memory size of the operating state storage device SP Output signal U (SPA) in line f) behaves accordingly follows:
  • the first switching on of the time curve shown in FIG. 2 is how can be recognized from pulse U (SSA) in line d), switching on after a longer interruption.
  • the pulse U (SSA) in the initial state reset the operating state storage device SP gives one low value of their output voltage U (SPA).
  • the first short break leads to a toggle function of the operating state memory device SP activating edge at their clock input and switches on the memory size and thus the output voltage U (SPA) the high value around.
  • the third too brief power interruption activates the toggle function and leads again to the high value of the voltage U (SPA).
  • This mode of operation is desirable because the user uses the short switch-off or a short power supply interruption by pressing a button to switch over the gas discharge lamp, whereas restarting the gas discharge lamp after a switch-off which is really intended is not intended to result in a state which may not have been predictable for the user. It makes sense to operate the lamp at full brightness after switching it off for a longer period of time and can do so by brief interruptions be dimmed ".
  • This embodiment demonstrates the advantage of the invention below With the help of the existing smoothing electrolytic capacitor C1 to be able to integrate an additional circuit into the operating circuit with the power supply interruptions depending on their duration lead different reactions. Shorter power interruptions as one by dimensioning the resistors Ra and Rb and the predetermined capacitance of the electrolytic capacitor C1 in connection with the set threshold voltage of the reset circuit SS given time lead to an operating state change between two or several operating states of the operating circuit or the gas discharge lamp. This can be compared to an incandescent lamp dimming circuit Adjustment of the brightness can be made.
  • the present solution is not a complex one Realization of an analog measurement quantity formation by own RC combination and / or an additional unit to discretize the analog measured variables necessary.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Dc-Dc Converters (AREA)
  • Electronic Switches (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
EP99105264A 1998-04-07 1999-03-15 Circuit d'alimentation de lampes à décharge avec sélection de mode de fonctionnement Withdrawn EP0949852A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19815624 1998-04-07
DE19815624A DE19815624A1 (de) 1998-04-07 1998-04-07 Betriebsschaltung für Entladungslampen mit umschaltbaren Betriebszuständen

Publications (2)

Publication Number Publication Date
EP0949852A2 true EP0949852A2 (fr) 1999-10-13
EP0949852A3 EP0949852A3 (fr) 2001-04-11

Family

ID=7863907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105264A Withdrawn EP0949852A3 (fr) 1998-04-07 1999-03-15 Circuit d'alimentation de lampes à décharge avec sélection de mode de fonctionnement

Country Status (7)

Country Link
US (1) US6181074B1 (fr)
EP (1) EP0949852A3 (fr)
JP (1) JPH11329778A (fr)
KR (1) KR19990082996A (fr)
CN (1) CN1146307C (fr)
CA (1) CA2267486A1 (fr)
DE (1) DE19815624A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009003522A1 (fr) * 2007-07-04 2009-01-08 Osram Gesellschaft mit beschränkter Haftung Arrangement de circuit pour détecter des séquences de mise en marche pour un commutateur marche/arrêt
WO2009003992A1 (fr) * 2007-07-04 2009-01-08 Osram Gesellschaft mit beschränkter Haftung Arrangement de circuit destiné à détecter les séquences de mise en marche d'un commutateur marche/arrêt
DE102008060781A1 (de) * 2008-12-05 2010-06-10 Osram Gesellschaft mit beschränkter Haftung Lampe und Verfahren zur Ansteuerung der Lampe
DE102010002355A1 (de) * 2010-02-25 2011-08-25 Osram Gesellschaft mit beschränkter Haftung, 81543 Modul und Verfahren zur Ansteuerung eines dimmbaren Betriebsgeräts

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100749788B1 (ko) * 2001-03-12 2007-08-17 삼성전자주식회사 냉음극선관 램프 내부의 전자 흐름 제어 방법, 이를이용한 냉음극선관 방식 조명장치의 구동 방법, 이를구현하기 위한 냉음극선관 방식 조명장치 및 이를 적용한액정표시장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322632A (en) * 1980-03-24 1982-03-30 Teccor Electronics, Inc. Remote load selector
US4896079A (en) * 1988-05-20 1990-01-23 Prescolite, Inc. Bi-level switch
WO1997043880A1 (fr) * 1996-05-10 1997-11-20 Philips Electronics N.V. Circuit de ballast
DE19629207A1 (de) * 1996-07-19 1998-01-22 Holzer Walter Prof Dr H C Ing Helligkeitssteuerung von Leuchtstoff-Kompaktlampen
WO1998027792A1 (fr) * 1996-12-17 1998-06-25 Koninklijke Philips Electronics N.V. Ballast

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
US3605016A (en) * 1970-01-19 1971-09-14 Univ Iowa State Res Found Inc Interval timer apparatus
JPS58201108A (ja) * 1982-05-19 1983-11-22 Nissan Motor Co Ltd マイクロコンピユ−タを用いた車両用電子制御システムの監視装置
US4999528A (en) * 1989-11-14 1991-03-12 Keech Eugene E Metastable-proof flip-flop
DE4037948A1 (de) 1990-11-29 1992-06-04 Holzer Walter Verfahren und einrichtung zur steuerung von gasentladungslampen mit elektronischen vorschaltgeraeten
US5446439A (en) * 1993-03-26 1995-08-29 Smartronics, Inc. Emergency condition lighting controller
US5621283A (en) * 1994-08-05 1997-04-15 Leviton Manufacturing Co Microprocessor based touch dimmer system to control the brightness of one or more electric lamps using single or multi-key devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322632A (en) * 1980-03-24 1982-03-30 Teccor Electronics, Inc. Remote load selector
US4896079A (en) * 1988-05-20 1990-01-23 Prescolite, Inc. Bi-level switch
WO1997043880A1 (fr) * 1996-05-10 1997-11-20 Philips Electronics N.V. Circuit de ballast
DE19629207A1 (de) * 1996-07-19 1998-01-22 Holzer Walter Prof Dr H C Ing Helligkeitssteuerung von Leuchtstoff-Kompaktlampen
WO1998027792A1 (fr) * 1996-12-17 1998-06-25 Koninklijke Philips Electronics N.V. Ballast

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009003522A1 (fr) * 2007-07-04 2009-01-08 Osram Gesellschaft mit beschränkter Haftung Arrangement de circuit pour détecter des séquences de mise en marche pour un commutateur marche/arrêt
WO2009003992A1 (fr) * 2007-07-04 2009-01-08 Osram Gesellschaft mit beschränkter Haftung Arrangement de circuit destiné à détecter les séquences de mise en marche d'un commutateur marche/arrêt
DE102008060781A1 (de) * 2008-12-05 2010-06-10 Osram Gesellschaft mit beschränkter Haftung Lampe und Verfahren zur Ansteuerung der Lampe
DE102010002355A1 (de) * 2010-02-25 2011-08-25 Osram Gesellschaft mit beschränkter Haftung, 81543 Modul und Verfahren zur Ansteuerung eines dimmbaren Betriebsgeräts

Also Published As

Publication number Publication date
DE19815624A1 (de) 1999-10-14
CN1231574A (zh) 1999-10-13
KR19990082996A (ko) 1999-11-25
CN1146307C (zh) 2004-04-14
CA2267486A1 (fr) 1999-10-07
US6181074B1 (en) 2001-01-30
EP0949852A3 (fr) 2001-04-11
JPH11329778A (ja) 1999-11-30

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