CN1633830A - Lamp sensor for a choke for operating a gas discharge lamp - Google Patents
Lamp sensor for a choke for operating a gas discharge lamp Download PDFInfo
- Publication number
- CN1633830A CN1633830A CN03804114.6A CN03804114A CN1633830A CN 1633830 A CN1633830 A CN 1633830A CN 03804114 A CN03804114 A CN 03804114A CN 1633830 A CN1633830 A CN 1633830A
- Authority
- CN
- China
- Prior art keywords
- lamp
- circuit
- voltage
- discharge lamp
- ballast
- 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
Links
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
- H05B41/26—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
- H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
-
- 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
- H05B41/282—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
- H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention relates to a choke for operating a gas discharge lamp, which comprises an inverter (1) that has two transistor switches (17 and 18) that are connected in series to a direct voltage source (Ubus) in a push-pull circuit. The inverter (1) is linked with a load circuit (3) via a coupling capacitor (2) to which a high-impedance resistor (12) is connected in parallel, said load circuit comprising the gas discharge lamp (4) and an acceptor circuit (22). A sensor circuit (6) is used to detect both a lamp malfunction and the voltage applied to the lamp (4). The sensor circuit (6) is provided with a voltage divider (7) that is connected in parallel to the lamp filaments (8, 9) and the resonance capacitor (5) on the side facing away from the coupling capacitor (2) of the lamp (4). A sensor signal (10) detects a lamp malfunction or determines the lamp voltage that is tapped in a center (11) of the voltage divider (7).
Description
Technical field
The present invention relates to be used for the ballast of at least a gaseous discharge lamp.
Background technology
At present, be used for high value (high-value) ballast of gaseous discharge lamp usually, before applying starting voltage between the lamp electrode, these lamp electrodes carried out preheating.Have been found that the useful life that can prolong lamp by this measure largely.
For example described in EP 0 594 880 A1, gaseous discharge lamp carries out work based on the series connection oscillating circuit usually, and wherein tank condenser discharge path common and gaseous discharge lamp is arranged in parallel.With the electrode structure of gaseous discharge lamp is heater coil, and the electric current of oscillating circuit flows through this heater coil when not lighting gaseous discharge lamp.In warm-up operation, frequency changes according to the resonance frequency of series resonant circuit, makes the voltage impose on the voltage of resonant capacitor and to impose on gaseous discharge lamp thus can not make the gaseous discharge lamp build-up of luminance.In this way, in being constructed to the lamp electrode of coil, flow through substantially invariable electric current, make these electrodes be preheated.After warm-up phase finishes, frequency setting near the resonance frequency of resonant circuit, increases the voltage on the resonant capacitor by this resonant circuit, thereby makes the final build-up of luminance of gaseous discharge lamp.
Ballast also has the function that the state of lamp is monitored except having the major function that gas discharge is started, keeps and cuts off, interrupt (disruption) and start relative measures to detect possible work.These measures for example can comprise the cutoff high part.
For example when in two coils one or two break down, perhaps when lamp being removed fully or do not have (correctly) to be installed in the lighting device, work can occur and interrupt.
According to EP 0 707 439 A1 as can be known, there is a kind of known method, utilize this method, be used in employing under the situation of electric ballast of gaseous discharge lamp, the ohmically voltage drop and the consequent heating current that are connected with the elementary windings in series of heating transformer are measured, whether opened circuit or whether lamp is not installed in the lighting device with magnetic test coil.
Another requirement of modern ballast is that the voltage on the discharge path that is applied to gaseous discharge lamp is detected.
Fig. 3 schematically shows the part of ballast, this ballast be configured on the one hand detect lamp failure (lamp disruption) (coil opens circuit, lamp not in position or lamp be removed etc.), and on the other hand, this ballast is configured to detect modulating voltage.Therefore, in Fig. 1 to Fig. 3, utilize label 1 to schematically show to have two the alternately switch (power transistor) 17 of clock control (clocked) and 18 inverters.Be connected with load circuit 3 on the node of inverter 1, this load circuit 3 has by resonant inductance 16 (L
R) and resonant capacitor 5 (C
R) series resonant circuit 22 that constitutes.In addition, coupling capacitor 2 (C are set
K), this coupling capacitor 2 is capacitively coupled to load circuit 3 on this node of inverter 1.The discharge path of lamp 4 and resonant capacitor 5 are connected in parallel.
In addition, can see the heater coil 8 and 9 of gaseous discharge lamp 4.With the series circuit of lower heating coil 9 in, promptly between lamp 4 and ground node, be connected with measuring resistance 26 (R), lamp current and coil current flow through this measuring resistance 26.By the voltage of locating so reducing at measuring resistance 26 (R), can export measuring-signal 10a (S1), whether this measuring-signal has reflected under the non-build-up of luminance state of lamp has heating current to flow through coil 8 and 9, and thus the reaction have in order heater coil 8 and 9 lamp 4 whether install in position.
In order to detect modulating voltage, at the coupling capacitor 2 (C of load circuit 3
K) a side also be connected with the voltage divider 7 in parallel with gaseous discharge lamp 4.This voltage divider 7 has two resistance that are connected in series 14 and 15 (R
1And R
2).Therefore, circuit node 11 places between two resistance 14 and 15 can output signal 10b (S2), and this signal 10b represents the voltage that the discharge path to gaseous discharge lamp 4 applies.
Therefore it should be noted that the situation of the sort circuit that interrupts for the work that is used to detect modulating voltage and be used for identification light 4, the circuit of independent setting all must be provided under each situation.And must correspondingly estimate two signal S1 and S2.
Summary of the invention
In view of the demand of hyundai electronics ballast, the objective of the invention is to realize a kind of technology, this technology can come the voltage that imposes on gaseous discharge lamp is at work detected and can identification light fault (lacking lamp etc.) in simple mode.
Especially, individual signals should be enough to be used for detecting the work interruption of modulating voltage and identification light.
According to the present invention, the feature by independent claims has realized this purpose.Dependent claims has further been set forth cardinal principle of the present invention in particularly preferred mode.
According to the present invention, a kind of ballast is provided, be used for operating gas discharge lamps.Thus, have an inverter, this inverter has two transistor switch (T that series connection is provided with
1And T
2), and link to each other with a direct current voltage source, and this inverter is carried out push-pull type (push-pull) clock control, these two transistor switches are by coupling capacitor (C
K) link to each other with load circuit.As according to the description in present technique field and known situation, load circuit has gaseous discharge lamp and series resonant circuit.At last, a sensor circuit is set, is used for lamp failure and the voltage that imposes on lamp being made up identification according to single measuring-signal (S2).Therefore, sensor circuit has a voltage divider, and this voltage divider links to each other with " top " current potential carrying coil (potential carrying coil) of lamp on the one hand, links to each other with ground on the other hand.
Sensor circuit 6 makes can export sensor signal (S2), and this sensor signal (S2) is used for the identification light fault and detects modulating voltage.Therefore, the invention has the advantages that, can estimate lamp failure and modulating voltage based on single detector signal (S2).
In order to form the direct current branch road in simple mode, can be with high-impedance resistor R
KBe connected in parallel with coupling capacitor.
This sensor circuit can ASIC mode integrated.
Can with heating power capacitively or inductive be coupled at least one coil of gaseous discharge lamp.
In addition, according to the present invention, also provide a kind of method that is used for detecting modulating voltage and identification light fault at the ballast of gaseous discharge lamp.Thus, can realize the identification that the coil of the detection of modulating voltage and lamp opens circuit based on single measuring-signal (S2).Especially, in preheating and build-up of luminance phase process, coil current is monitored, and in course of normal operation, lamp current is monitored.
Description of drawings
Now with reference to the accompanying drawings and with reference to the detailed description of exemplary embodiment, other features of the present invention, advantage and characteristic are described.
Fig. 1 represents first exemplary embodiment of the present invention;
Fig. 2 represents another exemplary embodiment of the present invention; And
Fig. 3 represent for the identification light fault and the voltage that detects the discharge path impose on lamp in the another kind of possibility aspect the principle.
Embodiment
In Fig. 1, schematically show one embodiment of the invention.Situation also has an inverter 1 according to ballast of the present invention as is known, and this inverter 1 has two transistor switches that are connected in series 17 and 18 (T
1And T
2), this inverter 1 and a direct current voltage source U
BusLink to each other, and this inverter 1 is carried out clock control in push-pull mode.Thus, can realize switching by the control unit 23 that is implemented as integrated circuit (IC) (especially with ASIC mode).Be connected with a load circuit 3 on the node of two switches 17 and 18, this load circuit 3 has a series connection resonant circuit 22 and a lamp 4.Thus, series resonant circuit 22 is by a resonant inductance 16 (L
R) and a resonant capacitor 5 (C
R) form.Situation as is known, the discharge path and the resonant capacitor 5 (C of the gaseous discharge lamp 4 between two heater coils 8 and 9
R) be connected in parallel.
High-impedance resistor 12 (R
R) and coupling capacitor 2 (C
K) be connected in parallel, make by bypass coupling capacitor 2 (C
R), can make faint direct current I
DCFlow through top heater coil 8 and flow through following the voltage divider 7 that describes in detail.
As shown in Figure 1, according to the present invention, will have resistance 14 and 15 (R
1And R
2) voltage divider 7 be parallel-connected to gaseous discharge lamp and resonant capacitor 5 (C
R) parallel circuits.Or rather, lamp 4 away from coupling capacitor 2 (C
K) a side voltage divider 7 is set, therefore from inverter 1, voltage divider 7 is connected the downstream of top heater coil 8.As already mentioned, high impedance resistors in parallel 12 makes direct current I
DCFlow through the resistance 14 and the 15 (R of voltage divider 7
1And R
2).Circuit node 11 places output measuring-signal 10b (sensor signal S2) between two resistance 14 and 15 of voltage divider 7 is estimating circuit 13 through this measuring-signal 10b being sent to (numeral) after mould/number conversion.Can similarly this evaluation circuit 13 be embodied as integrated circuit.Therefore, voltage divider 7 and signal output terminal (tap) 11 represented the sensor circuit 6 that is used for the identification light fault and is used to detect modulating voltage together.
Function in a circuit according to the invention now will be described.Estimate circuit 13 and can discern following illumination condition according to the value of sensor signal 10b (S2):
When lamp 4 not being installed in the appropriate location of lighting device,, there is not direct current I if when perhaps the top heater coil 8 of gaseous discharge lamp 4 opens circuit
DCFlow through this heater coil 8 and flow through voltage divider 7 thus.Therefore, in this case, on voltage divider 7, there is not voltage drop.Therefore, under non-build-up of luminance state, under the situation of lamp failure, only apply and the corresponding alternating voltage of the oscillating characteristic of series resonant circuit 22 to voltage divider 7.As mentioned above, this can detect according to sensor signal 10b (S2) by estimating circuit 13.For this situation of lamp failure, may need in some cases to take some measures immediately, for example because lamp 4 not in position, very high voltage may occur in output place of inverter 1.Therefore, can be the cut-out system or cut off inverter 1 at least by a kind of measure that evaluation circuit 13 is taked.
Will be wherein at least top heater coil 8 lamps 4 working properly be installed under the situation in the lighting device direct current I
DCCan flow through top heater coil 8 and flow through voltage divider 7 thus.According to sensor signal 10b (S2), estimate circuit 13 and will detect in this case by the setovered alternating voltage of (displaced) of the direct current pressure drop of voltage divider 7.
Measure the AC voltage drop of lamp 4 in all cases.Whether be set at the appropriate location according to lamp 4 with normal top heater coil 8, can be by the dc voltage drop of voltage divider this alternating voltage of setovering.
Should be noted that at coupling capacitor 2 (C
K) parallel branch in high-impedance resistor 12 (R
K) also have the following advantages, that is, can reduce so-called " flicker (wavering) " effectively at least widely by making specific DC component, that is, and clear zone that replaces in the gaseous discharge lamp 4 and dark space.
Fig. 2 represents another exemplary embodiment of the present invention.Utilize this embodiment, by two coils 19 and the 20 (L of transformer
H1And L
H2) realize inductively heating power is coupled in heater coil 8 and 9.Although the capacitive couplings of heating power is preferred under the situation of the non-low light level (non-dimmed) device usually, the coupling of the heating power of inductance form is preferred under the situation of the low light level (dimmed) device.
In this accompanying drawing, also schematically shown following situation, promptly as the elementary winding of induction heating power transformer, can adopt the elementary winding 21 (L of separated transformer
H3).Alternatively, can adopt resonant inductance 16 (L
R) as elementary winding, be used for heating power is coupled to inductively the heater coil 8 and 9 of discharge lamp 4.
Should also be noted that in the context of the present invention, can adopt any coupling that heating power is coupled in heater coil 8 and 9.
Label list
| Label | Assembly or |
| 1 | Inverter is embodied as the n channel mosfet T of two automatic interlocks that are connected in series1And |
| 2 | Coupling capacitor C in the series |
| 3 | Load circuit is made of series |
| 4 | Gas-discharge lamp in the load circuit 3 |
| 5 | Resonant capacitor C in the series |
| 6 | Be used for the fault of identification gas- |
| 7 | Divider is used as sensor circuit 6 |
| 8 | First (top) heater coil of gas- |
| 9 | Second (bottom) heater coil of gas- |
| 10a | The voltage drop of measuring resistance 26 (sensor signal S1) |
| 10b | The output voltage of sensor circuit 6 (sensor signal S2) |
| 11 | Circuit node in the middle of the divider 7 |
| 12 | Coupling capacitor CKParallel branch in high- |
| 13 | Be used for estimating the evaluation circuit of sensor signal 10 |
| 14 | First (top) resistance R of divider 71 |
| 15 | Second (bottom) resistance R of divider 72 |
| 16 | The resonant inductance L of series |
| 17 | The first clock control transistor switch (is embodied as automatic interlock n channel mosfet T1) |
| 18 | Second clock control transistor switch (is embodied as automatic interlock n channel mosfet T2) |
| 19 | Be used for heating power is coupled to inductively the inductance L of first (top) heater coil of gas-discharge lamp 4h1(be embodied as heating transformer Tr1Armature winding) |
| Label | Assembly or |
| 20 | Be used for heating power is coupled to inductively the inductance L of second (bottom) |
| 21 | Be used for heating power is coupled to inductively the inductance L of the heater coil of gas-discharge lamp 4h3(be embodied as heating transformer Tr3Armature winding) |
| 22 | Series resonant circuit as the part of load circuit 3 |
| 23 | Be used for control and be implemented as automatic interlock n channel mosfet T1With two |
| 24 | Coupling capacitor C in the coupling branch road of first (top) |
| 25 | Coupling capacitor C in the coupling branch road of second (bottom) |
| 26 | Be connected in series to the measuring resistance R of second (bottom) heater coil of gas-discharge lamp |
Claims
(according to the modification of the 19th of treaty)
1. ballast that is used for operating gas discharge lamps, it has:
Inverter (1), this inverter (1) have two switches (17 and 18) that series connection is provided with, and are connected to direct voltage source (U
Bus), and this inverter (1) carried out the push-pull type clock control, and this inverter (1) is connected with load circuit (3) by coupling capacitor (2), and this load circuit (3) has gaseous discharge lamp (4) and series resonator (22), and
Sensor circuit (6) is used for lamp failure and the voltage that imposes on described lamp (4) are made up identification,
Wherein said sensor circuit (6) has voltage divider (7), this voltage divider (7) one side is connected in series with the top current potential carrying coil of described lamp, link to each other with ground on the other hand, and locate to export the sensor signal (10b) that is used for the identification light fault and detects modulating voltage at the mid point (11) of voltage divider (7).
2. ballast according to claim 1 is characterized in that, a high-impedance resistor (12) and described coupling capacitor (2) are connected in parallel.
3. any described ballast in requiring according to aforesaid right is characterized in that, with the integrated described sensor circuit of the mode of ASIC (6).
4. any described ballast in requiring according to aforesaid right is characterized in that, described heating power capacitively is coupled in the coil (8,9) of described gaseous discharge lamp (4).
5. any described ballast in requiring according to aforesaid right is characterized in that, with described heating power inductive be coupled in the coil (8,9) of described gaseous discharge lamp (4).
6. any described ballast in requiring according to aforesaid right is characterized in that, described sensor signal (10b) is carried out the A/D conversion and send to estimating circuit (13).
7. a method that is used for detecting at the ballast of gaseous discharge lamp (4) modulating voltage and identification light fault is characterized in that,
Realize the detection of modulating voltage and the identification that the coil of gaseous discharge lamp (4) is opened circuit according to single measuring-signal (10b).
8. method according to claim 7 is characterized in that,
Locate to obtain described measuring-signal (10b) at voltage divider (7), this voltage divider (7) is connected in series with current potential carrying coil.
9. according to claim 7 or 8 described methods, it is characterized in that,
In the preheating and the process in build-up of luminance stage, coil current is monitored, and in course of normal operation, lamp current is monitored.
Claims (9)
1. ballast that is used for operating gas discharge lamps, it has:
Inverter (1), this inverter (1) have two switches (17 and 18) that series connection is provided with, and are connected to direct voltage source (U
Bus), and this inverter (1) carried out the push-pull type clock control, and this inverter (1) is connected with load circuit (3) by coupling capacitor (2), and this load circuit (3) has gaseous discharge lamp (4) and series resonator (22), and
Sensor circuit (6) is used for lamp failure and the voltage that imposes on described lamp (4) are made up identification,
Wherein said sensor circuit (6) has voltage divider (7), this voltage divider (7) links to each other with the top current potential carrying coil of described lamp on the one hand, link to each other with ground on the other hand, and locate to export the sensor signal (10b) that is used for the identification light fault and detects modulating voltage at the mid point (11) of voltage divider (7).
2. ballast according to claim 1 is characterized in that,
One high-impedance resistor (12) and described coupling capacitor (2) are connected in parallel.
3. any described ballast in requiring according to aforesaid right is characterized in that,
With the integrated described sensor circuit of the mode of ASIC (6).
4. any described ballast in requiring according to aforesaid right is characterized in that,
Described heating power capacitively is coupled in the coil (8,9) of described gaseous discharge lamp (4).
5. any described ballast in requiring according to aforesaid right is characterized in that,
With described heating power inductive be coupled in the coil (8,9) of described gaseous discharge lamp (4).
6. any described ballast in requiring according to aforesaid right is characterized in that,
Described sensor signal (10b) is carried out the A/D conversion and sends to estimating circuit (13).
7. a method that is used for detecting at the ballast of gaseous discharge lamp (4) modulating voltage and identification light fault is characterized in that,
Realize the detection of modulating voltage and the identification that the coil of gaseous discharge lamp (4) is opened circuit according to single measuring-signal (10b).
8. method according to claim 7 is characterized in that,
Locate to obtain described measuring-signal (10b) at voltage divider (7).
9. according to claim 7 or 8 described methods, it is characterized in that,
In the preheating and the process in build-up of luminance stage, coil current is monitored, and in course of normal operation, lamp current is monitored.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10206731.7A DE10206731B4 (en) | 2002-02-18 | 2002-02-18 | Lamp sensor for a ballast for operating a gas discharge lamp |
| DE10206731.7 | 2002-02-18 | ||
| PCT/EP2003/001046 WO2003069963A1 (en) | 2002-02-18 | 2003-02-03 | Lamp sensor for a choke for operating a gas discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1633830A true CN1633830A (en) | 2005-06-29 |
| CN1633830B CN1633830B (en) | 2010-06-30 |
Family
ID=27635102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN03804114.6A Expired - Fee Related CN1633830B (en) | 2002-02-18 | 2003-02-03 | Lamp sensor for a ballast for operating a gas discharge lamp |
Country Status (6)
| Country | Link |
|---|---|
| EP (2) | EP1477046B1 (en) |
| CN (1) | CN1633830B (en) |
| AT (1) | ATE464774T1 (en) |
| AU (1) | AU2003206824A1 (en) |
| DE (2) | DE10206731B4 (en) |
| WO (1) | WO2003069963A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155457B (en) * | 2006-09-29 | 2011-06-08 | 鸿富锦精密工业（深圳）有限公司 | Light source driving mechanism with jump-spark protection function |
| CN102183684A (en) * | 2010-01-15 | 2011-09-14 | 三星电子株式会社 | Arc discharge detecting circuit, light source driving apparatus and method of driving a light source using the same |
| CN106896244A (en) * | 2017-04-12 | 2017-06-27 | 江苏伊施德创新科技有限公司 | Ageing fixture and the method that contact condition and the test of ageing result are done using the fixture |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004037390B4 (en) * | 2004-08-02 | 2008-10-23 | Infineon Technologies Ag | Control circuit for a fluorescent lamp with a diagnostic circuit and method for the diagnosis of a fluorescent lamp |
| DE102005018763A1 (en) * | 2005-04-22 | 2006-10-26 | Tridonicatco Gmbh & Co. Kg | Operating devices with evaluation of the lamp temperature during lamp control |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5041763A (en) * | 1989-12-22 | 1991-08-20 | Lutron Electronics Co., Inc. | Circuit and method for improved dimming of gas discharge lamps |
| DE4039161C2 (en) * | 1990-12-07 | 2001-05-31 | Zumtobel Ag Dornbirn | System for controlling the brightness and operating behavior of fluorescent lamps |
| DE4120649A1 (en) * | 1991-06-22 | 1992-12-24 | Vossloh Schwabe Gmbh | OVERVOLTAGE PROTECTED BALLAST |
| DE59209173D1 (en) * | 1992-10-28 | 1998-03-05 | Knobel Lichttech | Method and circuit arrangement for igniting fluorescent lamps at a predetermined temperature of the lamp cathodes |
| DE4301276A1 (en) * | 1993-01-19 | 1994-07-21 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Method and power supply unit for the stabilized operation of a sodium high-pressure discharge lamp |
| DE4436463A1 (en) * | 1994-10-12 | 1996-04-18 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Circuit arrangement for operating one or more low-pressure discharge lamps |
| DE19530485A1 (en) * | 1995-08-18 | 1997-02-20 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Method and circuit arrangement for operating an electric lamp |
| DE19613149A1 (en) * | 1996-04-03 | 1997-10-09 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Circuit arrangement for operating electric lamps |
| US5808422A (en) * | 1996-05-10 | 1998-09-15 | Philips Electronics North America | Lamp ballast with lamp rectification detection circuitry |
| CN1172412A (en) * | 1996-07-25 | 1998-02-04 | 浙江长丰电器实业公司 | Electronic ballast for gas discharge lamp |
| JP3858317B2 (en) * | 1996-11-29 | 2006-12-13 | 東芝ライテック株式会社 | Discharge lamp lighting device and lighting device |
| US5883473A (en) * | 1997-12-03 | 1999-03-16 | Motorola Inc. | Electronic Ballast with inverter protection circuit |
| ES2195438T3 (en) * | 1997-12-23 | 2003-12-01 | Tridonicatco Gmbh & Co Kg | ELECTRONIC BASKET |
| DE19916080C2 (en) * | 1999-04-09 | 2001-11-22 | Vossloh Schwabe Elektronik | Ballast with error detection |
| DE19934687A1 (en) * | 1999-05-25 | 2000-12-21 | Tridonic Bauelemente | Electronic ballast for at least one low-pressure discharge lamp |
| DE19923945A1 (en) * | 1999-05-25 | 2000-12-28 | Tridonic Bauelemente | Electronic ballast for at least one low-pressure discharge lamp |
| CN2421799Y (en) * | 2000-04-27 | 2001-02-28 | 上海市照明灯具研究所 | High-quality light adjustable electronic ballast |
-
2002
- 2002-02-18 DE DE10206731.7A patent/DE10206731B4/en not_active Expired - Fee Related
-
2003
- 2003-02-03 AT AT03704522T patent/ATE464774T1/en active
- 2003-02-03 EP EP03704522A patent/EP1477046B1/en not_active Expired - Lifetime
- 2003-02-03 CN CN03804114.6A patent/CN1633830B/en not_active Expired - Fee Related
- 2003-02-03 DE DE50312613T patent/DE50312613D1/en not_active Expired - Lifetime
- 2003-02-03 WO PCT/EP2003/001046 patent/WO2003069963A1/en active Application Filing
- 2003-02-03 AU AU2003206824A patent/AU2003206824A1/en not_active Abandoned
- 2003-02-03 EP EP08155561.7A patent/EP1945008B1/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155457B (en) * | 2006-09-29 | 2011-06-08 | 鸿富锦精密工业（深圳）有限公司 | Light source driving mechanism with jump-spark protection function |
| CN102183684A (en) * | 2010-01-15 | 2011-09-14 | 三星电子株式会社 | Arc discharge detecting circuit, light source driving apparatus and method of driving a light source using the same |
| CN102183684B (en) * | 2010-01-15 | 2015-08-12 | 三星显示有限公司 | The method of arc discharge testing circuit, apparatus of driving light source and driving light source |
| CN106896244A (en) * | 2017-04-12 | 2017-06-27 | 江苏伊施德创新科技有限公司 | Ageing fixture and the method that contact condition and the test of ageing result are done using the fixture |
| CN106896244B (en) * | 2017-04-12 | 2023-10-10 | 江苏伊施德创新科技有限公司 | Aging clamp and method for testing contact condition and aging result by using same |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE464774T1 (en) | 2010-04-15 |
| EP1477046B1 (en) | 2010-04-14 |
| DE50312613D1 (en) | 2010-05-27 |
| DE10206731B4 (en) | 2016-12-22 |
| DE10206731A1 (en) | 2003-08-28 |
| EP1945008B1 (en) | 2013-09-11 |
| WO2003069963A1 (en) | 2003-08-21 |
| EP1477046A1 (en) | 2004-11-17 |
| EP1945008A1 (en) | 2008-07-16 |
| AU2003206824A1 (en) | 2003-09-04 |
| CN1633830B (en) | 2010-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1702948A (en) | Method and circuit for power factor correction(PFC) | |
| CN1638593A (en) | Method for operating a low pressure discharge lamp | |
| CN102273326B (en) | For driving method and the circuit of light-emitting device | |
| KR20150013314A (en) | Method, apparatus and system for controlling an electrical load | |
| US7557515B2 (en) | Simplified ballast control circuit | |
| CN112188669A (en) | LED backlight system and LED control circuit | |
| CN1633830A (en) | Lamp sensor for a choke for operating a gas discharge lamp | |
| CN1770948A (en) | Effective current possessing lamp drive circuit and lamp drive method | |
| CN1926754A (en) | Current overload and voltage detection in a central point | |
| CN1143605C (en) | Circuit apparatus | |
| CN1619908A (en) | Device and method for the differential protection and electrical apparatus including such a device | |
| US6194842B1 (en) | Supply circuit for discharge lamps with overvoltage protection | |
| US8796941B2 (en) | Method and circuit arrangement for operating at least one discharge lamp | |
| CN101682966B (en) | Error detector in the operation device of luminaire | |
| US6930454B2 (en) | Method for operating at least one low-pressure discharge lamp and operating device for at least one low-pressure discharge lamp | |
| CN1993009A (en) | Method and system for open lamp protection | |
| US6515431B2 (en) | Multi-lamp protection circuit for an electronic ballast | |
| CN1893759A (en) | Smoothing circuit for improving EMC | |
| CN1286237C (en) | Circuit for detecting an inadmissibly high current in an output stage | |
| CN109587868B (en) | Electronic driver for LED lighting module and LED lamp | |
| JP4314046B2 (en) | Discharge lamp lighting device | |
| CN101395970B (en) | Electronic ballast and method for operating an electrical lamp | |
| CN1956617A (en) | Circuit and method for detecting the amplitude factor of a lamp current or a lamp voltage | |
| CN1443031A (en) | Working circuit for discharging lamp having life fermination early stage identification | |
| EP4387070A1 (en) | Resonant hybrid flyback converter for a led-based load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20170203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |