EP1601237A2 - Vorschaltgerät für Entladungslampe mit Dauerbetriebs-Regelschaltung - Google Patents
Vorschaltgerät für Entladungslampe mit Dauerbetriebs-Regelschaltung Download PDFInfo
- Publication number
- EP1601237A2 EP1601237A2 EP05010155A EP05010155A EP1601237A2 EP 1601237 A2 EP1601237 A2 EP 1601237A2 EP 05010155 A EP05010155 A EP 05010155A EP 05010155 A EP05010155 A EP 05010155A EP 1601237 A2 EP1601237 A2 EP 1601237A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamp
- control circuit
- ballast
- preheating
- preheat
- 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- Withdrawn
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Classifications
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- 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
-
- 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
- H05B41/2988—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
Definitions
- the present invention relates to a ballast for discharge lamps, specifically, such discharge lamps, the preheatable electrodes exhibit
- ballasts are known per se. Often they have half-bridge inverter circuits on. However, the invention also relates on other ballasts. Basically generates an inverter circuit from a rectified AC power supply or a DC power supply a power supply for the lamp, the has a higher frequency than the mains frequency. In many cases it is included a control circuit for controlling the lamp current or the lamp power provided in Lampendauer Anlagen, hereinafter referred to as continuous operation control circuit referred to as. This continuous operation control circuit influences the operating frequency at which the inverter uses the Lamp supplies, and regulates about the lamp current or the lamp power. This is done by approximating or removing the operating frequency resonant frequencies of the lamp resonant circuits containing the lamp.
- the lamp Before the lamp can be operated, it must go through a relatively high Voltage to be ignited. Again, this is in many cases a resonant stimulus the lamp resonant circuit use.
- the electrodes For discharge lamps with preheatable electrodes, the electrodes are first for a preheated certain time before the actual ignition voltage applied becomes.
- the preheating time is determined by a preheating time, in the In the most general sense, a physical process takes place that is a temporal one Delay defined, and must run back after the preheat time, to run again at a later turn on the lamp again to be able to.
- the preheating timer has the function of a switch. The Details of the realization of such a preheating timer and the physical Operations are not relevant to the principle of the invention, therefore the above general formulations are chosen.
- the ignition of the lamp takes place in such cases, regardless of the continuous operation control circuit after expiration of the mentioned physical process.
- the ignition voltage must be achieved in some way, for example, by a resonance excitation in the lamp resonant circuit. It would disturb the influence of the continuous operation control circuit.
- the invention has the technical problem as a basis, an improved Ballast and an improved method of operation of discharge lamps specify with preheatable electrodes with a continuous operation control circuit.
- ballast for at least one Discharge lamp with preheatable electrodes, which has ballast a continuous operation control circuit for controlling the lamp current or the lamp power in Lampendauer peaceful yoga over the operating frequency the lamp, a preheating timer defining a preheating time for the electrodes, which is adapted to the preheating by a with a temporal Define delays running physical process and this Process afterwards with a time lag, wherein the ballast is adapted to the lamp then independently from the continuous operation control circuit to ignite when the physical Operation of the preheating timer has expired, characterized that the ballast is further adapted to the continuous operation control circuit then put out of action for lamp standby, if the preheater after a service interruption of the lamp due an unfinished return of its physical process can not define a complete new preheat process, so that the lamp then ignited independently of the continuous operation control circuit can be.
- the invention is further directed to a corresponding method of operation.
- the starting point of the invention is that Problems arise with the time delays of the preheating timer can.
- the preheating time defining physical run Operations also with a certain time delay again back.
- PTC resistors typically several tens of seconds to a few Minutes and is thus much slower than the typical cooling time of the electrodes of about a few 100 ms.
- the discharge lamp So after a relatively short time turned on again so is the PTC resistor not sufficiently cooled or, more generally, the physical Operation of preheating timer has not sufficiently run back. In such cases, malfunctions may occur due to the apparent sequence of preheating the continuous operation control circuit in Function comes or stays. This disturbs or prevents a rule Re-ignition of the lamp.
- the invention proposes, in the event of not yet sufficient returned physical process in the preheat timer, the continuous operation control circuit to turn off to re-ignition regardless of the continuous operation control circuit.
- this is done by the lamp voltage, one of them derived potential or another variable correlating therewith to one Input of a control amplifier or switching transistor of the continuous operation control circuit is created.
- a control amplifier or switching transistor of the continuous operation control circuit is created.
- it can be enough, just one temporal portion of the continuous operation control circuit or the correlating Size to use. Reference is made to the embodiments.
- a PTC resistor is a common and is the preferred preheat timer here. In principle, but also come Other Vorchingzeitglieder into consideration, in particular on timers, such as RC elements, switches to be controlled.
- the invention further provides that in series with the PTC resistor, preferably a threshold device such as a so-called TISP or SIDAC, ie a threshold value component, that does not conduct electricity below a certain voltage threshold.
- a threshold device such as a so-called TISP or SIDAC, ie a threshold value component, that does not conduct electricity below a certain voltage threshold.
- I. d. R. must be a lamp current measurement for the continuous operation control circuit be provided, either because the lamp current regulated itself or from the lamp current, the lamp power is determined.
- the invention proposes here various preferred variants. For one thing, the Lamp current to a serial one of the lamp electrodes with one of the Supply branches of the ballast connecting coupling capacitor measured become.
- the term "coupling capacitor” are commonly used Capacitors referred to in series with the lamp or lamps switched and prevent steady state DC current through the lamp (s).
- a branch provided in which only during a half-wave is measured and thus during the other half wave no energy is consumed.
- This is one Current measuring resistor in series with one of the diodes. It is based on the embodiments directed.
- a differential current transformer is preferred here. with a correction of the total lamp current to the preheating or through the electrodes and, for example, the PTC resistor also occur during continuous operation flowing stream can.
- the lamp current only the actually by the discharge in the current flowing through the lamp.
- a further preferred embodiment of the invention provides a voltage regulation circuit , which serves the ignition voltage of the lamp resonant circuit on the frequency of the half-bridge or another converter of the Ballast.
- This voltage regulation circuit is advantageous because at an ignition via a resonant excitation as a result of the required Quality of the lamp resonant circuit a relatively accurate frequency setting is required.
- the control circuit can now change the frequency to the resonance behavior adapt the lamp resonant circuit or "nachfahren" and in particular via a limitation of the ignition voltage by frequency change work.
- the aforementioned continuous operation control circuit may be connected to the voltage regulation circuit be combined so far, as both on the same control input for controlling the operating frequency of the converter.
- the circuit as current or Power control circuit ie continuous operation control circuit
- the circuit as current or Power control circuit works, as soon as appreciable lamp currents flow, the lamp has ignited, and in the other case, the voltage control has priority.
- the already mentioned Consideration of the preheating current or PTC resistance current in the lamp current measurement is important here. It is, however possible, a realistic lamp current measurement without differential transformer perform, for example, by the current control by a voltage measurement via the PTC resistor (or via a measuring resistor parallel or serial to the PTC resistor) during the preheat phase is blocked.
- ballasts are designed to be a plurality To operate lamps. If these are connected in series, they result in the above, no significant additions, such as corresponding embodiment shows. If they are connected in parallel, is It makes particular sense, the corresponding lamp voltages or so correlating quantities in the sense of an exclusive-or link to the Input of the control amplifier or switching transistor in the continuous operation control circuit to lay.
- FIG. 1 shows a first exemplary embodiment.
- KL1-1 and KL1-2 are marked on which a mains voltage is connected shall be.
- a filter of two capacitors C1 and C2 and two with F11 designated coupled coils connects the mains voltage terminals with a full-bridge rectifier from the diodes D1 - D4.
- the rectified supply voltage is about to two pump branches to computing diodes D5-D8 to an intermediate circuit storage capacitor C6 placed in the figure on the far right.
- the rectifier is thereby via an electronic Pump switch with the main energy storage, the DC link capacitor C6, coupled.
- the between the diodes D5 and D7 on the one hand and D6 and D8, on the other hand, are pumping via a pump network coupled to the output of an inverter explained in more detail.
- the inverter frequency is over the Pump node energy taken from the mains voltage and in one Pump network cached.
- the cached energy via the electronic pump switch, here the diodes D8 and D7, the intermediate circuit storage capacitor C6 fed. This is in time with the inverter frequency energy from the Taken from the net.
- the mentioned filter elements suppress the corresponding ones Spectral components, so that ultimately a quasi-sinusoidal power consumption he follows.
- the DC link capacitor C6 feeds this as a half bridge of two Switching transistors V1 and V2 constructed converter.
- the half-bridge transistors V1 and V2 generate by corresponding antiphase clocking their center tap an alternating potential that between the two potentials of the rectifier output oscillates.
- This alternating potential is over a lamp inductor LD1 and, in this case, a series circuit two discharge lamps LA1 and LA2 and one in the following even closer explained differential transformer TR2 via two coupling capacitors C15, C16 connected to the utility berths.
- FIG. 1 shows that not only a current through the discharge plasma in FIG can flow the lamps LA1 and LA2, but also a Vortexstrom through the upper electrode of the upper lamp LA1 and a winding of a Heating transformer TR1 and a PTC resistor R1 and the lower electrode the lower lamp LA2 can flow.
- the preheating current for the upper Electrode of the lower lamp LA2 and the lower electrode of the upper Lamp LA1 is generated via the heating transformer TR1.
- the differential current transformer TR2 in its lowest in Figure 1 Winding ultimately the difference of the total lamp current through the uppermost winding of the differential transformer TR2 and the preheating current determined by the mean winding. In the case of only a single discharge lamp would the heating transformer TR1 with its circuit eliminated by the internal electrodes.
- the preheating results during the preheating u. a. by the value of the PTC resistor R1.
- the value of R1 initially so small that a given by the lamp data current is reached.
- the value of R1 increases, so that finally a negligible compared to the actual discharge current Heating current flows.
- the described arrangement for preheating causes during the preheating phase a strong attenuation of a lamp resonant circuit described below and thus a reduction in the natural frequency significantly below the resonant frequency of the undamped lamp resonant circuit. While the preheat phase is operated with an inverter frequency, the below the resonant frequency of the undamped lamp resonant circuit thus ensuring high heating currents and a short preheating phase.
- the lamp resonant circuit has, in addition to the already mentioned lamp inductor LD1 resonant capacitors C5 and C9.
- the determination of the resonance frequency results from an effective capacity of C9 or the series connection from C5 and C9.
- the lamp resonant circuit after the preheat phase due the attenuation decreasing due to the high resistance of R1 and the correspondingly increased quality near its resonance frequency stimulated, a high ignition voltage is produced across the lamps LA1 and LA2, to ignite the discharge lamps using the preheated electrodes leads.
- the lamp resonant circuit acts as a matching network, that the output impedance of the inverter in a to Operation of the discharge lamps transforms appropriate impedance.
- the lamp resonant circuit also acts as a pump network. Is this Potential at the already mentioned pump node lower than the current one Mains voltage, the pumping network draws energy from the grid. in the reversed case, the absorbed energy to the DC link capacitor C6 delivered. Another pumping action goes from the condenser C8 off.
- the capacitor C8 continues to act as a so-called trapezoidal capacitor for switching discharge of the half-bridge transistors V1 and V2.
- the Pump network for the second pump branch consists of a series circuit a pumping inductor L1 and a pumping capacitor C10.
- the half-bridge transistors V1 and V2 which are designed as MOSFET, be at their gates through an integrated circuit, for example of the type International Rectifier IR2153.
- This control circuit also contains a highside driver to control the "high-level" Half-bridge transistor V1.
- the diode D9 and the capacitor C4 provided.
- the control circuit contains only one oscillator whose frequency over the connections 2 and 3 (RT and CT) can be set. This frequency corresponds to the operating frequency of the half-bridge.
- a frequency-determining resistor R12 is connected between the connections 2 and 3, a frequency-determining resistor R12 is connected.
- the Half-bridge frequency can be adjusted and thus forms a manipulated variable for a control loop.
- the base terminal of the bipolar transistor T3 is continued from controlled on the right in Figure 1 circuit parts.
- the bipolar transistor and the control circuit and associated circuitry thus form a regulator.
- control circuit and the associated circuitry can also by any voltage or current controlled oscillator circuit can be realized, the drive via driver circuits accomplish of converter transistors.
- the controller detects the lamp current as a controlled variable, and more specifically, the discharge current. This one will be at the lowest winding of the already mentioned differential transformer TR2 detected.
- a full-bridge rectifier GL1 rectifies and conducts the current him over a low-impedance measuring resistor R21 to the reference potential. Via a low pass of the resistors R22 and R32 and the capacitor C21, which is used for averaging, becomes the voltage drop at R21 in the input of a non-inverting measuring amplifier in the form of a Operational amplifier U2-A given. This is in a known manner the resistors R23-R25 connected and outputs its output signal the diode D23 to the already described controller input (manipulated variable node).
- the current control loop is closed, previously as a continuous-operation control circuit was designated.
- the diode D23 decouples the output of the measuring amplifier U2-A from the voltage divider D24, C20, R20, D16, R11 when the potential at the connection point LD1-D21 is high enough.
- the circuit arrangement is designed so that without Discharge current the potential at the anode of diode D23 the starting value accepts. This is below a minimum value that defines the work area of the transistor T3 and thus the controller limited. potential fluctuations thus have no effect on the half-bridge frequency, as long as the potential remains below the minimum value.
- the control loop is not closed.
- the starting value causes a half-bridge frequency, that of the starting frequency equivalent. Via C12 and R12, a relatively low frequency is selected, which ensures high heating currents and short preheating phases.
- This protection circuit forms simultaneously but also a voltage regulation circuit for setting the ignition voltage to a suitable value. This is done by a varistor D24 on the lamp side Connection of lamp inductor LD1. Instead of a metal oxide varistor could also be a suppressor diode or zener diode used here. So it's about a threshold. Via a series connection with a capacitor C20 and a resistor R20 becomes the lamp voltage given at a certain threshold between two diodes D16. The anode of the left diode represents a second regulator input Value of the resistor R20 influences the strength of the effect of the below described intervention on the control loop.
- the tapped via the varistor D24 lamp voltage forms a measure of the reactive energy oscillating in the lamp resonant circuit and for the ignition voltage. If this voltage exceeds the threshold value of the varistor D24, so the half-bridge frequency is increased and thus in the resonant circuit oscillating reactive energy reduces and on the other hand the lamp voltage reduced.
- a typical value for the threshold value of the varistor D24 is z. B. 250 V
- the voltage regulation circuit then regulates above this voltage.
- the continuous operation control circuit according to the invention out of operation be set if the already described situation of a new Ignition test without cooled PTC resistor R1 occurs.
- the control amplifier U2-A is the continuous operation control circuit blocked, so that the already described voltage regulation circuit in Function remains. This sets a suitable ignition voltage, so that the Ignite the lamp despite a lack of regular preheat operation can. Such an ignition process is exhausting for the electrodes but ultimately for the functioning of the lamp.
- D24 represents a bidirectional one Zener diode (or suppressor diode or a varistor) is and serves as a threshold value component for decoupling in various operating states.
- FIG. 2 shows a second embodiment and differs from FIG the first embodiment of Figure 1 as follows.
- TR2 As a device for lamp current measurement of the differential current transformer is used TR2, which here, however, in deviation to Figure 1, only the lamp current the lamp LA1 measures. In lamp operation so acts the lamp current the lamp LA1 as a controlled variable, wherein the separate resonant circuit the lamp LA2 runs on the regulated for the lamp LA1 frequency. It but would also be conceivable, the regulated lamp current from shares of (in this case) to form two lamp currents.
- the voltage divider circuit of D24, C20 and R20 in Figure 1 correspond here the separate voltage divider circuits on the one hand C22, R2, R9, D51 and on the other hand C20, R17, R20, D50 on the each greater potential dominates, via the diodes D5 and D13 for blocking the continuous operation control circuit and via the diodes D70 and D101 with the resistor R7 for the voltage regulation circuit. It is a matter of an exclusive OR link.
- Figure 3 shows a third embodiment, which differs from the first embodiment differs from Figure 1 as follows. Again, reference numerals omitted.
- the lamp current is connected in series to the coupling capacitor C16 via a Measuring resistor R21 measured (and that with the factor C16 / (C15 + C16) multiplied load circuit current) and a resistor R22 to the Base of the operational amplifier U2-A replacing bipolar transistor T4 (impedance converter) given.
- This bipolar transistor functions here as Control amplifier of the continuous operation control circuit.
- the diodes D7 provide ensure that only the positive half-wave is taken into account in the lamp current measurement is to gain a suitable potential for the variable gain amplifier.
- the lamp electrodes of the single lamp LA1 are directly without Pre-heating transformer via the TISP / SIDAC D17 and the PTC resistor R3 preheated.
- To the regulation of the preheating and igniting the Lamp LA1 flowing load circuit current to suppress and the voltage regulation over C20, D24, R20, D16 will be the one in these operating modes exploited large voltage drop across the PTC resistor R3, to inject a negative current via C17 and D8 and thus the bipolar transistor T4 lock.
- the RC element R22 / C21 forms analogous to Figure 1, the arithmetic mean the voltage proportional to the lamp current via R21, which exceeds the Emitter follower T4 is given to the VCO input (base T3).
- the diode D16 limits the negative voltage at the base of T4 to its forward voltage, the series connection D10 / D11 passes the positive current half-wave by D17 against the reference potential (ground), without the positive voltage at the base of T4 in the burning operation of the lamp limit.
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
- Figur 1
- zeigt ein Schaltdiagramm zu einem ersten erfindungsgemäßen Ausführungsbeispiel.
- Figur 2
- zeigt ein Schaltdiagramm zu einem zweiten erfindungsgemäßen Ausführungsbeispiel.
- Figur 3
- zeigt ein Schaltdiagramm zu einem dritten erfindungsgemäßen Ausführungsbeispiel.
Claims (11)
- Elektronisches Vorschaltgerät für mindestens eine Entladungslampe (LA1, LA2) mit vorheizbaren Elektroden, welches Vorschaltgerät aufweist
eine Dauerbetriebs-Regelschaltung (TR2, GL1, R21-25, 32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15; D7, T4) zur Regelung des Lampenstromes oder der Lampenleistung im Lampendauerbetrieb über die Betriebsfrequenz der Lampe,
ein eine Vorheizzeit für die Elektroden definierendes Vorheizzeitglied (R1, R111, R3), das dazu ausgelegt ist, die Vorheizzeit durch einen mit einer zeitlichen Verzögerung ablaufenden physikalischen Vorgang zu definieren und diesen Vorgang danach mit einer zeitlichen Verzögerung zurücklaufen zu lassen,
wobei das Vorschaltgerät dazu ausgelegt ist, die Lampe dann unabhängig von der Dauerbetriebs-Regelschaltung zu zünden, wenn der physikalische Vorgang des Vorheizzeitgliedes abgelaufen ist,
dadurch gekennzeichnet, dass das Vorschaltgerät ferner dazu ausgelegt ist, die Dauerbetriebs-Regelschaltung (TR2, GL1, R21-25, 32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15; D7, T4) für den Lampendauerbetrieb dann außer Funktion zu setzen, wenn das Vorheizglied (R1, R111, R3) nach einer Betriebsunterbrechung der Lampe (LA1, LA2) wegen eines noch nicht abgeschlossenen Rücklaufs seines physikalischen Vorgangs keinen vollständigen neuen Vorheizvorgang definieren kann, so dass die Lampe dann unabhängig von der Dauerbetriebs-Regelschaltung gezündet werden kann. - Vorschaltgerät nach Anspruch 1, bei dem das Außerfunktionsetzen der Dauerbetriebs-Regelschaltung (TR2, GL1, R21-25, 32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15; D7, T4) dadurch erfolgt, dass zumindest ein zeitlicher Anteil der Lampenspannung oder einer damit direkt korrelierenden Größe an einen Eingang eines Regelverstärkers (U2-A) oder Schalttransistors (T4) der Dauerbetriebs-Regelschaltung angelegt wird.
- Vorschaltgerät nach Anspruch 1 oder 2, bei dem das Vorheizzeitglied einen PTC-Widerstand (R1, R111, R3) enthält.
- Vorheizzeitglied nach Anspruch 3, bei dem seriell zu dem PTC-Widerstand (R3) ein Schwellenwert-Bauelement (D17) liegt, das unterhalb einer bestimmten Spannungsschwelle nicht leitet.
- Vorschaltgerät nach einem der vorstehenden Ansprüche, bei dem eine Lampenstrommessung für die Dauerbetriebs-Regelschaltung (R21, 22, D7, T4, C4, D9, RT, CT, R12, C12, T3, D15) seriell zu einem eine Lampenelektrode mit einem Versorgungsast verbindenden Koppelkondensator (C 16) erfolgt.
- Vorschaltgerät nach Anspruch 5, bei dem eine Diode (D7) dazu vorgesehen ist, bei der seriellen Lampenstrommessung nur jeweils eine Halbwelle des Lampenstromes zu berücksichtigen.
- Vorschaltgerät nach einem der Ansprüche 1-4, bei dem eine Lampenstrommessung für die Dauerbetriebs-Regelschaltung (TR2, GL1, R21-25, 32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15) über einen Differenzstromtransformator (TR2) erfolgt, wobei der Differenzstromtransformator bei der Messung die Differenz zwischen dem Gesamtlampenstrom und dem Elektrodenheizstrom bildet.
- Vorschaltgerät nach einem der vorstehenden Ansprüche, mit einer Spannungsregelschaltung (D24, C20, R20, D16, C4, D9, RT, CT, R12, C12, T3, D15; D50, D51, R9, R2, R17, R7, C22, D101, D70) zum Einstellen der Zündspannung eines Lampenresonanzkreises (LD1, C5, C9; LD2; L1) durch Beeinflussung der Frequenz, mit der der Lampenresonanzkreis versorgt wird:
- Vorschaltgerät nach Anspruch 2, auch in Verbindung mit einem der Ansprüche 3-8, das dazu ausgelegt ist, eine Mehrzahl parallel geschaltete Lampen (LA1, LA2) zu betreiben, wobei der zeitliche Anteil der Lampenspannung oder der damit direkt korrelierenden Größe der parallel geschalteten Lampen durch eine Exklusiv-Oder-Verknüpfung (D5, D13) an den Eingang des Regelverstärkers (U2-A) oder Schalttransistors angelegt wird.
- Verfahren zum Betreiben einer Entladungslampe (LA1, LA2) mit vorheizbaren Elektroden, bei dem
mit einem Vorheizzeitglied (R1, R111, R3), in dem mit einer zeitlichen Verzögerung ein physikalischer Vorgang abläuft, eine Vorheizzeit zu definieren und den physikalischen Vorgang danach mit einer zeitlichen Verzögerung zurücklaufen zu lassen,
die Elektroden während der Vorheizzeit vorzuheizen,
die Lampe zu zünden, wenn der physikalische Vorgang des Vorheizzeitgliedes abgelaufen ist,
im Lampendauerbetrieb den Lampenstrom oder die Lampenleistung über die Betriebesfrequenz der Lampe mit einer Dauerbetriebs-Regelschaltung (TR2, GL1, R21-25, 32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15; D7, T4) zu regeln,
dadurch gekennzeichnet, dass bei dem Verfahren die Dauerbetriebs-Regelschaltung (TR2, GL1, R21-25, 32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15; D7, T4) für den Lampendauerbetrieb außer Funktion gesetzt wird, wenn das Vorheizglied (R1, R111, R3) nach einem Ausschalten der Lampe (LA1, LA2) wegen eines noch nicht abgeschlossenen Rücklaufs seines physikalischen Vorgangs keinen neuen Vorheizvorgang definieren kann, und dann die Lampe unabhängig von der Dauerbetriebs-Regelschaltung gezündet wird. - Verfahren nach Anspruch 10, bei dem ein Vorschaltgerät nach einem der Ansprüche 1-9 verwendet wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004025774A DE102004025774A1 (de) | 2004-05-26 | 2004-05-26 | Vorschaltgerät für Entladungslampe mit Dauerbetriebs-Regelschaltung |
DE102004025774 | 2004-05-26 |
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EP1601237A2 true EP1601237A2 (de) | 2005-11-30 |
EP1601237A3 EP1601237A3 (de) | 2009-07-08 |
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Application Number | Title | Priority Date | Filing Date |
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EP05010155A Withdrawn EP1601237A3 (de) | 2004-05-26 | 2005-05-10 | Vorschaltgerät für Entladungslampe mit Dauerbetriebs-Regelschaltung |
Country Status (5)
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US (1) | US7355348B2 (de) |
EP (1) | EP1601237A3 (de) |
CN (1) | CN1703135B (de) |
CA (1) | CA2508131A1 (de) |
DE (1) | DE102004025774A1 (de) |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102004044180A1 (de) * | 2004-09-13 | 2006-03-16 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Elektronisches Vorschaltgerät mit Pumpschaltung für Entladungslampe mit vorheizbaren Elektroden |
DE202008008165U1 (de) * | 2008-06-18 | 2009-11-05 | Tridonicatco Gmbh & Co. Kg | Betriebsgerät für Gasentladungslampen oder andere Leuchtmittel mit Lampenstrommessung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0378992A1 (de) | 1989-01-16 | 1990-07-25 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung zum Betrieb von Entladungslampen |
US5583399A (en) | 1991-12-09 | 1996-12-10 | Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh | Ballast for one or more fluorescent lamps including threshold sensitive filament voltage preheating circuitry |
EP1443807A2 (de) | 2003-01-28 | 2004-08-04 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung und Verfahren zum Start und Betrieb von Entladungslampen |
Family Cites Families (12)
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CA1026817A (en) * | 1972-05-09 | 1978-02-21 | Michel Remery | Electrical circuit for igniting and supplying a discharge lamp |
IL105564A (en) * | 1993-04-30 | 1996-06-18 | Ready Light Energy Ltd | Dimmer for discharge bulb |
DE19520999A1 (de) * | 1995-06-08 | 1996-12-12 | Siemens Ag | Schaltungsanordnung zur Wendelvorheizung von Leuchtstofflampen |
ATE187295T1 (de) * | 1995-07-05 | 1999-12-15 | Magnetek Spa | Schaltung zum betreiben von entladungslampen mit vorgeheizten wendeln |
US6008587A (en) * | 1996-02-29 | 1999-12-28 | Mills; Robert | Fluorescent lamp electronic ballast control circuit |
DE19708792A1 (de) * | 1997-03-04 | 1998-09-10 | Tridonic Bauelemente | Verfahren und Vorrichtung zum Erfassen des in einer Gasentladungslampe auftretenden Gleichrichteffekts |
DE19923945A1 (de) * | 1999-05-25 | 2000-12-28 | Tridonic Bauelemente | Elektronisches Vorschaltgerät für mindestens eine Niederdruck-Entladungslampe |
US6400100B1 (en) * | 2000-07-20 | 2002-06-04 | Philips Electronics North America Corporation | System and method for determining the frequency of longitudinal mode required for color mixing in a discharge lamp |
ATE348354T1 (de) * | 2000-10-20 | 2007-01-15 | Int Rectifier Corp | Ballaststeuer-ic mit leistungsfaktorkorrektur |
US6448713B1 (en) * | 2000-12-07 | 2002-09-10 | General Electric Company | Sensing and control for dimmable electronic ballast |
DE10345610A1 (de) * | 2003-09-29 | 2005-05-12 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren zum Betreiben mindestens einer Niederdruckentladungslampe |
US7187132B2 (en) * | 2004-12-27 | 2007-03-06 | Osram Sylvania, Inc. | Ballast with filament heating control circuit |
-
2004
- 2004-05-26 DE DE102004025774A patent/DE102004025774A1/de not_active Withdrawn
-
2005
- 2005-05-10 EP EP05010155A patent/EP1601237A3/de not_active Withdrawn
- 2005-05-24 CA CA002508131A patent/CA2508131A1/en not_active Abandoned
- 2005-05-24 US US11/135,461 patent/US7355348B2/en not_active Expired - Fee Related
- 2005-05-26 CN CN2005100783604A patent/CN1703135B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0378992A1 (de) | 1989-01-16 | 1990-07-25 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung zum Betrieb von Entladungslampen |
US5583399A (en) | 1991-12-09 | 1996-12-10 | Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh | Ballast for one or more fluorescent lamps including threshold sensitive filament voltage preheating circuitry |
EP1443807A2 (de) | 2003-01-28 | 2004-08-04 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung und Verfahren zum Start und Betrieb von Entladungslampen |
Also Published As
Publication number | Publication date |
---|---|
CA2508131A1 (en) | 2005-11-26 |
US7355348B2 (en) | 2008-04-08 |
CN1703135A (zh) | 2005-11-30 |
DE102004025774A1 (de) | 2005-12-22 |
US20050264243A1 (en) | 2005-12-01 |
EP1601237A3 (de) | 2009-07-08 |
CN1703135B (zh) | 2011-01-26 |
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