CN101715271A - Emergency ballast system - Google Patents
Emergency ballast system Download PDFInfo
- Publication number
- CN101715271A CN101715271A CN200810168259A CN200810168259A CN101715271A CN 101715271 A CN101715271 A CN 101715271A CN 200810168259 A CN200810168259 A CN 200810168259A CN 200810168259 A CN200810168259 A CN 200810168259A CN 101715271 A CN101715271 A CN 101715271A
- Authority
- CN
- China
- Prior art keywords
- emergency
- unit
- ballast
- common power
- ballast system
- 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.)
- Pending
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
- H05B41/2983—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
- H02J9/065—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads for lighting purposes
-
- 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
- H05B47/105—Controlling the light source in response to determined parameters
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention provides an emergency ballast system which comprises a ballast unit, a signal preparation unit and an emergency unit, wherein the ballast unit is provided with a DC/AC inverter and is used for supplying power to a load which is connected to the emergency ballast system when a common power supply works normally by using the common power supply; the signal preparation unit is connected to the common power supply and is used for detecting the working condition of the common power supply, generating a detection signal for reflecting the working condition of the common power supply and outputting the detection signal to the emergency unit; and the emergency unit comprises an emergency power supply module. When the common power supply has a fault, the emergency unit is used for responding to the detection signal for reflecting the fault, and an emergency power supply which is connected to the emergency unit is used for supplying power to the DC/AC inverter.
Description
Technical field
The present invention relates to emergency ballast system.
Background technology
The current ballast system that is used for emergency lighting (for example emergency lighting of fluorescent light fittings) is very complicated usually.Except common ballast, these systems also comprise emergency ballast usually.Fig. 1 shows a kind of emergency ballast system 1 of prior art.As Fig. 1 at any time, emergency ballast system 1 comprises emergency ballast 10 and common ballast 20.Emergency ballast 10 and common ballast 20 allow lamp is powered from being switched to fully by emergency ballast 10 by common ballast 20 power supplies in the wiring of outlet side, perhaps power from being switched to fully by common ballast 20 by emergency ballast 10 power supplies.In case of emergency, utilize battery 30 to drive lamp by emergency ballast 10.In most of the cases, use relay to realize above-mentioned switching.
In scheme as shown in Figure 1, the wiring from two ballasts to lamp is very complicated, thereby causes higher mis-wired probability.In addition, output connection can cause electromagnetic interference to the capacitance of the variation of lamp device.And every type lamp all needs special-purpose emergency ballast, so that lamp moves (general emergency ballast generally can not make the lamp operate as normal, and can make lamp damage sooner) in its specification.In addition, each needs an inverter that is used for the high-frequency operation of lamp emergency ballast and common ballast, thereby system cost is uprised.In addition, in this scheme, because extremely sensitive to the capacitance of wiring in the application of tunable optical, emergency ballast may use concurrently with the ballast of tunable optical hardly.
Summary of the invention
The invention provides a kind of emergency ballast system, this system can solve one or more problems or the other problems in the prior art scheme.
According to one embodiment of present invention, provide a kind of emergency ballast system.This emergency ballast system comprises the ballast unit with DC/AC inverter.This system also comprises signal preparation unit and emergency unit.Described ballast unit is used for utilizing this common power to the electric that is connected to this emergency ballast system when the common power operate as normal.Described signal preparation unit is connected to described common power, be used to detect described common power working condition, generate the detection signal of the working condition be used to reflect described common power and this detection signal outputed to described emergency unit.Described emergency unit comprises the emergency power supply module.When described common power was out of order, described emergency unit was used for utilizing the emergency power supply that is connected to described emergency unit to described DC/AC inverter power supply in response to the detection signal of the described fault of reflection.
Hereinafter will be described some embodiment of the present invention in conjunction with the accompanying drawings.According to following description, will understand purpose of the present invention, feature and advantage better.
Description of drawings
Fig. 1 shows the schematic diagram of the emergency ballast system of prior art;
Fig. 2 shows the schematic diagram of emergency ballast system according to an embodiment of the invention;
Fig. 3 shows the schematic diagram of emergency ballast system according to another embodiment of the present invention; And
Fig. 4 shows the schematic diagram of emergency ballast system according to another embodiment of the present invention.
Embodiment
Hereinafter will be described in detail with reference to the attached drawings exemplary embodiment of the present invention.For clarity and brevity, all features during description reality is implemented in the specification.But, should be appreciated that, in the process of carrying out any actual enforcement like this, in order to realize developer's target, must make many decisions specific to this enforcement, for example, meet relevant with system and relevant various restrictive conditions, and these restrictive conditions in implementing, each are different with business.And, should also be understood that it may be complicated and time-consuming that such enforcement is made great efforts, still, however, for the person of ordinary skill of the art, to understand on the basis of the present disclosure, this is the just work of routine also.
Fig. 2 shows emergency ballast system 100 according to an embodiment of the invention.Emergency ballast system 100 comprises emergency unit 110, ballast unit 120 and signal preparation unit 130.Ballast unit 120 comprises DC/AC inverter 121, and emergency unit 110 comprises emergency power supply module 111.
As shown in the figure, ballast unit 120 is connected to common power by lead L1 and N.When the common power operate as normal, ballast unit 120 utilizes this common power to power to the one or more loads that are connected to emergency ballast system (example illustrates a load among the figure).
Signal preparation unit 130 is connected to common power by lead L2, is used to detect the working condition (for example, voltage) of this power supply.In addition, signal preparation unit 130 can generate the detection signal of the working condition of this common power of reflection, and this detection signal is outputed to emergency unit 110 and/or ballast unit 120.
Here omitted the detailed structure of signal preparation unit 130.Those of ordinary skill in the art can understand, and working condition (as voltage), generation and the output that can detect power supply reflects that any structure of the signal of this working condition all can be used for this signal preparation unit.For example, signal preparation unit can be to be used for the converting unit of high-tension line conversion of signals one-tenth as the small-signal (being preferably direct current DC signal) of the drive signal of the logic of AC/DC inverter.In one embodiment, signal preparation unit can be the voltage divider with rectification and output filter.Certainly, those of ordinary skill in the art can be understood that signal preparation unit according to the present invention is not limited to above-mentioned example and embodiment.
When common power was out of order, signal preparation unit 130 detected this fault, and generated the detection signal of this fault of reflection.In response to this detection signal of this fault of reflection, the emergency power supply module 111 of emergency unit 110 is switched on, and the emergency power supply that makes emergency unit 110 to utilize to be connected to this emergency unit 110 is to inverter 121 power supplies.In addition, in response to this detection signal of this fault of reflection, the output of DC/AC inverter 121 can be adjusted to lower value alternatively, so that reduce the consumption of the energy that emergency power supply is provided.Simultaneously, emergency power supply module 11 can charge to the required level of operate as normal of DC/AC inverter 121 with being connected in busbar voltage capacitor 122 between the input terminal of DC/AC inverter 121.
When common power recovered from fault, signal preparation unit 130 detected this recovery, and generated the signal of this recovery of reflection.In response to this signal, emergency power supply module 111 is turned off, and the output of DC/AC inverter 121 is adjusted to rated value.
As can be seen, the emergency unit 110 in the present embodiment is different with emergency ballast 10 shown in Figure 1, and emergency unit 110 does not comprise the inverter that is used for the lamp operation.That is to say, under the out of order situation of common power, still use the inverter 121 in the common ballast unit 120 to drive load (for example lamp).
This technical scheme does not need special wiring or switch at the outlet side of emergency ballast system.Its basic design is that emergency unit is shared the useful circuit part that is used for co-operate in the common ballast.
Fig. 3 shows emergency ballast system 200 according to another embodiment of the present invention.
As shown in Figure 3, emergency ballast system 200 comprises emergency unit 210 and ballast unit 220.Ballast unit 220 comprises APFC (Active Power Factor Correction) or PPFC (PPFC (Passive Power Factor Correction)) module 223, DC/AC inverter 221 and signal preparation module 230.Emergency unit 210 comprises DC/DC power module 211 and DC/DC battery charger 212.
In certain embodiments, DC/DC power module 211 and DC/DC battery charger 212 all can use known DC/DC circuit topology, as boost converter, inverse-excitation type transducer, single ended primary induction transducer (SEPIC) or type of voltage step-up etc.For DC/DC power module 211, preferably adopt boost converter, as an alternative, can adopt SEPIC.For DC/DC battery charger 212, preferably can adopt inverse-excitation type transducer or type of voltage step-up.Although described some examples of above-mentioned two modules here,, those of ordinary skill in the art should be realized that, can use any structure of the function that can carry out two modules described herein.That is to say that these two modules according to the present invention are not limited to specific embodiment described herein and example.
In this embodiment, the function of signal preparation module 230 is identical with the function of signal preparation module 130 shown in Figure 2.The structural similarity of the structure of emergency ballast system 200 and emergency ballast system shown in Figure 2 100, difference are that in the embodiment shown in fig. 3, the signal preparation module is integrated in the ballast unit 220.In addition, on lead L1, use switch S, turn on and off the ballast unit.
In this embodiment, the emergency power supply that is connected to emergency unit is a battery.Emergency unit 210 is kept the energy of battery, and in case of emergency is independent of common power (as power line) and to inverter 221 power supply of ballast unit 220.Certainly, those of ordinary skill in the art should be realized that emergency power supply can also be the power available that is different from the other types of battery.
In ballast unit 220, busbar voltage capacitor 222 is best suited for being used to the parts of battery charge.This capacitor 222 is suitable for the inverter stored energy in the ballast again.As shown in Figure 3, busbar voltage capacitor 222 is connected between two input terminals of the inverter in the ballast.In addition, an electrode of busbar voltage capacitor 222 is connected to emergency unit 210, and another electrode is connected to the ground of ballast.
In addition, busbar voltage capacitor 222 is must provide energy so that in case of emergency make inverter keep parts of operation to it from external source in the ballast.In this embodiment, can busbar voltage capacitor (also can be described as Bus E-cap) be charged to metastable specific voltage (for example, use for power line, be typically 200-500V) by APFC or PPFC, thus, this capacitor can be DC/AC inverter stored energy.In addition, this busbar voltage capacitor can also be used as the energy source of DC/DC battery charger as mentioned above.
Similarly, the electric power that inverter 221 in ballast unit 220 is used to from power line is under the normal operative condition of lamp power supply, DC/DC battery charger 212 is connected in response to the signal L2i of this normal operative condition of reflection that is generated by the signal preparation module, makes this battery charger 212 utilize the utilisable energy in the busbar voltage capacitor 222 to be battery charge.Simultaneously, in response to the signal L2i of this normal operative condition of reflection, DC/DC power module 211 is turned off, and the output of DC/AC inverter 221 is adjusted to rated value.
Under the out of order situation of common power (being power line in this embodiment), for example, when the power line decompression, signal preparation module 230 detects this fault, and generates this fault-signal of reflection L2i.In response to the signal L2i of the described fault of reflection, DC/DC battery charger 212 is turned off, and DC/DC power module 211 is switched on, and the output of DC/AC inverter 221 is reduced to lower level, so that reduce the consumption of the energy that battery is provided.By reducing the power output of inverter, can prolong the operating time of emergency ballast system greatly.Simultaneously, DC/DC power module 211 charges to the required level of DC/AC inverter 211 operate as normal with busbar voltage capacitor 222.
When power line recovered from fault, signal preparation module 230 detected this recovery, and generated the signal of this recovery of reflection.In response to the signal of this recovery of reflection, DC/DC power module 211 is turned off, and the output of DC/AC inverter 221 is adjusted to rated value.
Fig. 4 shows emergency ballast system 300 according to another embodiment of the present invention.The structure of this emergency ballast system 300 is similar to emergency ballast system shown in Figure 3 200, and difference is that in this embodiment, the signal preparation module is integrated in the emergency unit.In this case, the signal preparation module must be directly connected in common power (being power line in this embodiment), and need not any switch.The operation of emergency ballast system 300 is identical with the operation of emergency ballast system shown in Figure 3 200, does not repeat them here.
In the above-described embodiments, described ballast unit is an electric ballast.
As can be seen, in the above-described embodiments, the wiring between emergency ballast system and the load (as lamp) is very simple, need not to change the former wiring between ballast and the load.Compare with prior art scheme shown in Figure 1, this simple output connection can reduce electromagnetic interference.
In addition, utilize emergency ballast system according to an embodiment of the invention, do not need special-purpose emergency ballast.
In addition, the emergency unit in the emergency ballast system does not comprise inverter according to an embodiment of the invention, can reduce the cost of system thus.
In addition, in technical scheme of the present invention, can be in response to the signal of working condition of reflection common power, the output level of the inverter of ballast is adjusted.
And the ballast of tunable optical can be used among the present invention.
Although described the present invention based on some preferred embodiments,, will be understood by those skilled in the art that these embodiment should not be considered as the restriction to scope of the present invention.Under the situation that does not break away from the spirit and scope of the present invention, any change or modification to described embodiment in one skilled in the relevant art's the understanding scope all fall into the scope of the present invention that is limited by claims.
Claims (13)
1. an emergency ballast system (100,200,300), comprise have the DC/AC inverter ballast unit (120 of (121,221,321), 220,320), this ballast unit is used for utilizing this common power to the electric that is connected to described emergency ballast system when the common power operate as normal, described system features is also to comprise signal preparation unit (130,230,330) and emergency unit (110,210,310)
Described signal preparation unit (130,230,330) is connected to described common power, be used to detect described common power working condition, generate the detection signal of the working condition be used to reflect described common power and this detection signal outputed to described emergency unit,
Described emergency unit (110,210,310) comprise emergency power supply module (111,211,311), wherein when described common power was out of order, described emergency power supply module responds utilized the emergency power supply that is connected to described emergency unit to described DC/AC inverter power supply in the detection signal that reflects described fault.
2. emergency ballast system as claimed in claim 1, be characterised in that, detection signal in response to the normal operative condition that reflects described common power, the output level of described DC/AC inverter (121,221,321) is adjusted to nominal level, and in response to the detection signal of fault of the described common power of reflection, the output level of described DC/AC inverter (121,221,321) is adjusted to the level less than described nominal level.
3. emergency ballast system as claimed in claim 1 or 2, be characterised in that, described ballast unit (120,220,320) also comprise busbar voltage capacitor (122,222 between the input terminal that is connected in described DC/AC inverter, 322), described emergency power supply module (111,211,311) is suitable for when described common power is out of order described busbar voltage capacitor charged to the required level of described DC/AC inverter operate as normal.
4. emergency ballast system as claimed in claim 1 or 2 is characterised in that, described signal preparation unit (130,230,330) also is used to detect the voltage on the described common power, so that detect the working condition of described common power.
5. emergency ballast system as claimed in claim 1 or 2 is characterised in that described emergency power supply is a battery.
6. emergency ballast system as claimed in claim 5, be characterised in that, described emergency unit (110,210,310) also comprise battery charger module (112,212,312), this battery charger module is used in response to the detection signal of the normal operative condition of the described common power of reflection described battery being charged, and stops described battery charge in response to the detection signal of the fault that reflects described common power.
7. emergency ballast system as claimed in claim 1 or 2 is characterised in that, described signal preparation unit (130,230,330) integrates with described emergency unit (110,210,310).
8. emergency ballast system as claimed in claim 1 or 2 is characterised in that, described signal preparation unit (130,230,330) integrates with described ballast unit (120,220,320).
9. emergency ballast system as claimed in claim 1 or 2 is characterised in that, described ballast unit (120,220,320) are electric ballasts.
10. emergency ballast system as claimed in claim 1 or 2 is characterised in that described load is a lamp.
11. emergency ballast system as claimed in claim 1 or 2 is characterised in that, described common power is a power line.
12. emergency ballast system as claimed in claim 1 or 2, be characterised in that described emergency power supply module (111,211,311) be the DC/DC power module, this power module is in boost converter, inverse-excitation type transducer, single ended primary induction transducer or the type of voltage step-up.
13. emergency ballast system as claimed in claim 6 is characterised in that, described battery charger module (112,212,312) is in boost converter, inverse-excitation type transducer, single ended primary induction transducer or the type of voltage step-up.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810168259A CN101715271A (en) | 2008-10-06 | 2008-10-06 | Emergency ballast system |
| PCT/EP2009/062248 WO2010040634A1 (en) | 2008-10-06 | 2009-09-22 | An emergency ballast system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810168259A CN101715271A (en) | 2008-10-06 | 2008-10-06 | Emergency ballast system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101715271A true CN101715271A (en) | 2010-05-26 |
Family
ID=41557550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810168259A Pending CN101715271A (en) | 2008-10-06 | 2008-10-06 | Emergency ballast system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101715271A (en) |
| WO (1) | WO2010040634A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102781149A (en) * | 2011-05-09 | 2012-11-14 | 海洋王照明科技股份有限公司 | Emergency lighting circuit and emergency electronic ballast |
| CN102843848A (en) * | 2011-06-22 | 2012-12-26 | 海洋王照明科技股份有限公司 | Electronic ballast circuit used for remote control type emergency lamp |
| CN102843849A (en) * | 2011-06-22 | 2012-12-26 | 海洋王照明科技股份有限公司 | Electronic ballast circuit for emergency lamp |
| CN104205563A (en) * | 2012-03-19 | 2014-12-10 | 赤多尼科英国有限公司 | Lamp unit power supply system |
| CN104737628A (en) * | 2012-05-30 | 2015-06-24 | 富乐工业有限公司 | Ballast with battery backup |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SK50532010A3 (en) * | 2010-12-15 | 2012-07-03 | S Power Export-Import, S. R. O. | Involvement of the main and emergency lighting |
| GB201204106D0 (en) | 2012-03-08 | 2012-04-18 | Tridonic Uk Ltd | Lamp unit power supply system |
| ITVI20130306A1 (en) * | 2013-12-20 | 2015-06-21 | Beghelli Spa | LIGHTING EQUIPMENT WITH EMBEDDED CIRCUIT FOR EMERGENCY LIGHTING |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2165566Y (en) * | 1993-08-05 | 1994-05-18 | 吴桂莲 | High lightness illuminating emergency lamp |
| EP1507327A1 (en) * | 2003-08-13 | 2005-02-16 | Sander Elektronik AG | Emergency lighting unit with integrated electronic ballast |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5241217A (en) * | 1991-11-07 | 1993-08-31 | Premier Power, Inc. | UPS with input commutation between AC and DC sources of power |
| US5252891A (en) * | 1992-05-06 | 1993-10-12 | Huang Ching L | Uninterruptible fluorescent lamp circuit available for emergency lighting |
-
2008
- 2008-10-06 CN CN200810168259A patent/CN101715271A/en active Pending
-
2009
- 2009-09-22 WO PCT/EP2009/062248 patent/WO2010040634A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2165566Y (en) * | 1993-08-05 | 1994-05-18 | 吴桂莲 | High lightness illuminating emergency lamp |
| EP1507327A1 (en) * | 2003-08-13 | 2005-02-16 | Sander Elektronik AG | Emergency lighting unit with integrated electronic ballast |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102781149A (en) * | 2011-05-09 | 2012-11-14 | 海洋王照明科技股份有限公司 | Emergency lighting circuit and emergency electronic ballast |
| CN102843848A (en) * | 2011-06-22 | 2012-12-26 | 海洋王照明科技股份有限公司 | Electronic ballast circuit used for remote control type emergency lamp |
| CN102843849A (en) * | 2011-06-22 | 2012-12-26 | 海洋王照明科技股份有限公司 | Electronic ballast circuit for emergency lamp |
| CN102843849B (en) * | 2011-06-22 | 2014-10-15 | 海洋王照明科技股份有限公司 | electronic ballast circuit for emergency lamp |
| CN104205563A (en) * | 2012-03-19 | 2014-12-10 | 赤多尼科英国有限公司 | Lamp unit power supply system |
| CN104205563B (en) * | 2012-03-19 | 2017-08-08 | 赤多尼科英国有限公司 | Lamp unit power-supply system |
| CN104737628A (en) * | 2012-05-30 | 2015-06-24 | 富乐工业有限公司 | Ballast with battery backup |
| US9954390B2 (en) | 2012-05-30 | 2018-04-24 | Fulham Co., Ltd. | Ballast with battery backup |
| CN104737628B (en) * | 2012-05-30 | 2019-02-22 | 富乐工业有限公司 | Ballast with spare battery |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010040634A1 (en) | 2010-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101715271A (en) | Emergency ballast system | |
| JP3175121B2 (en) | Uninterruptible power system | |
| JP4965265B2 (en) | Distributed power generation system | |
| JP5726555B2 (en) | Solar power system | |
| EP3089316A1 (en) | Online interactive uninterruptible power supply and control method therefor | |
| JP3089153U (en) | DC uninterruptible power supply with power failure lighting function | |
| KR101450711B1 (en) | Dc distribution function with energy storage and conversion system | |
| EP3506457A1 (en) | Charging power system with low standby power consumption and method of controlling the same | |
| US6876159B1 (en) | Electronic ballast system for emergency lighting applications | |
| KR20170026695A (en) | Hybrid energy storage system | |
| US11881812B2 (en) | Power switch circuit and power switch | |
| WO2015156597A1 (en) | Power converter for eliminating ripples | |
| CN109962474B (en) | Uninterruptible power supply device | |
| CN111193302A (en) | Control method and system of bidirectional vehicle-mounted charger | |
| KR20150030078A (en) | Photovoltaic inverter | |
| CN109980709B (en) | Charging power supply system with low standby power consumption and control method thereof | |
| CN112689363B (en) | Power converter | |
| CN102487243B (en) | Power supply and power-supply system provided with plurality of power supplies | |
| CN110831278B (en) | Driver for LED device and LED system | |
| KR101371703B1 (en) | Dc uninterrupted power supply | |
| CN112738953A (en) | Power converter | |
| CN218733951U (en) | Bidirectional inverter | |
| US20160013684A1 (en) | Power supply system and direct-current converter thereof | |
| CN101038380B (en) | LCD and power supply circuit thereof | |
| FI120609B (en) | Procedure and apparatus in connection with safety luminaires |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100526 |