CN1984520B - Modular protector of electronic positioner - Google Patents
Modular protector of electronic positioner Download PDFInfo
- Publication number
- CN1984520B CN1984520B CN2005101344680A CN200510134468A CN1984520B CN 1984520 B CN1984520 B CN 1984520B CN 2005101344680 A CN2005101344680 A CN 2005101344680A CN 200510134468 A CN200510134468 A CN 200510134468A CN 1984520 B CN1984520 B CN 1984520B
- Authority
- CN
- China
- Prior art keywords
- assembly
- modular protector
- signal
- temperature
- modular
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention is used for providing protection for electronic ballast based on both over current status and over temperature status. When system starts operation, if the current transformer (CT) detects the current signal level is lower than a safe value, the protective device will not work; if the current signal level is higher than a safe value, then the ballast is considered at over current status, at this time the protective device will be started to reduce the load of working system; if the temperature of any component in system is detected to over the safe value, the protective device will be also started.
Description
Technical field
The present invention relates to a kind of protective device of electric stabilizer, be in particular a kind of hybrid (Hybrid) or integrated (Integrated Circuit of being designed to; IC) protective device of Bao Zhuan electric stabilizer, the particularly a kind of modular protector that can detect two kinds of signals of overcurrent and excess temperature as the electric stabilizer that starts the protection foundation simultaneously.
Background technology
Fluorescent lamp is to be a kind of lighting apparatus the most easy to use, under the viewpoint based on its power saving and environmental protection, in fact be one to have energy-conservation and economic illuminating lamp kind, but fluorescent lamp can directly not start like general bulb, must drive by start-up circuit, general known technology all starts fluorescent lamp with the stable circuit of inductance type, but so design but has following shortcoming:
* the stable circuit start speed of inductance type is slow excessively;
* cause the fluorescent lamp luminous efficiency not good
* the stable circuit volume of inductance type produces high heat more greatly and also, and is very dangerous in the use; And
* make the flicker degree of fluorescent lamp be about 20%.
Then there is known technology to replace the stable circuit of inductance type again with electronic ballast, can improve aforementioned part shortcoming, but electronic ballast still has many shortcomings, as: easily produce long-pending hot stall problem, luminous power and do not calculate ideal yet, easily produce problem such as current harmonics interference, so how effectively to improve the electric stabilizer of fluorescent lamp, be the technical task of demanding urgently inquiring in fact.
After look into the novel patent that Taiwan patent announcement No. 473000 " improvement of fluorescent lamp circuit structure " arranged, the characteristics of this patent are that separate type direct current power supply absolute construction is to share for most separated fluorescent light electronic ballast circuit economy, and create heat-dissipating space and the effect that doubles to gain, and then doubled to carry out the gain circuitry function, come the direct current power of the high high-quality of output, in order to supply the power factor of effective lifting fluorescent lamp.
Summary of the invention
Main purpose of the present invention is the modular protector that proposes a kind of electric stabilizer.
For achieving the above object, the modular protector of electric stabilizer provided by the invention, this modular protector are arranged in product one Circuits System with this electric stabilizer, and this modular protector includes:
One identifying unit, this identifying unit also includes:
One temperature is judged assembly, and this temperature is judged assembly in order to receiving a temperature signal, and is higher than this temperature in this temperature signal and judges that assembly one trigger bit is punctual, makes this temperature judge the assembly conducting;
One electric current is judged assembly, and this electric current is judged assembly in order to receiving a current signal, and is higher than this electric current in this current signal and judges that assembly one trigger bit is punctual, makes this electric current judge the assembly conducting;
One logic lock, this logic lock is connected with this identifying unit, when this logic lock is used to this identifying unit conducting, spreads out of one and starts signal;
One gate signal controller, this gate signal controller be in order to after receiving this startup signal, with gate signal bypass to an earth terminal of the power switch assembly of this Circuits System;
One partial pressure unit, this partial pressure unit be in order to connecting a direct current power supply, and connect combination to form a dividing potential drop effect with a plurality of dividing potential drop assemblies;
One rectifier, this rectifier is in order to connect rectification in addition behind the resonance signal in this Circuits System;
One protection controller, this protection controller is connected with this rectifier, and this protection controller is in order to after receiving this startup signal, with this identifying unit synchronous triggering, and with this resonance signal and this DC power supply bypass; And
One filter, this filter is in order to abrupt voltage wave bypass in addition.
The modular protector of described electric stabilizer, wherein this temperature judges that assembly is to appoint in a Zener diode (Zener) and the two-way triggering thyristor (DIAC) to get one.
The modular protector of described electric stabilizer, wherein this electric current judges that assembly is to appoint in a Zener diode (Zener) and the two-way triggering thyristor (DIAC) to get one.
The modular protector of described electric stabilizer, wherein this logic lock be one or the door (ORGATE).
The modular protector of described electric stabilizer, wherein this protection controller is that one or three end brake fluids trigger assembly, and this triggering assembly is a thyristor (Silicon Controlled Rectifier; SCR).
The modular protector of described electric stabilizer, wherein this filter is a capacitance component.
The modular protector of described electric stabilizer, wherein this partial pressure unit includes:
One variable dividing potential drop assembly, this variable dividing potential drop assembly is a variable resistor, this variable dividing potential drop assembly is in order to come the modulation resistance according to this protective device one bearing power; And
One dividing potential drop assembly, this dividing potential drop assembly are connected the back and form this dividing potential drop effect with this variable dividing potential drop assembly.
The modular protector of described electric stabilizer wherein connects the series connection resonant circuit of this modular protector for this electric stabilizer.
The modular protector of described electric stabilizer, wherein this series resonant circuit is an optional one in an auto-excitation type series resonant circuit, an independent-excited series resonant circuit, the single-ended series resonant circuit of an auto-excitation type and the single-ended series resonant circuit of an independent-excited.
Fluorescent lamp system with modular protector provided by the invention, this fluorescent lamp system includes:
One filtering amending unit, this filtering amending unit is in order to AC power filter rectification in addition;
The plural groups light emitting module includes in this light emitting module:
One harmonic conversion unit, this harmonic conversion unit is connected with this filtering amending unit, and this harmonic conversion unit is in order to changing voltage and produce a high-frequency ac power;
One fluorescent lamp, this fluorescent-lamp-use is to produce light source; And
One modular protector, this protective device such as claim 1 a described protective device.
Described separate type electric stabilizer with modular protector, wherein this filtering amending unit includes a filter, a rectifier and a merit because of corrector.
Described separate type electric stabilizer with modular protector, wherein this harmonic conversion unit pack contains a transducer, a driver, light a lamp loop, a current transformer (CT) and a LC resonator.
The present invention is with the condition that protection mechanism is carried out that is produced as of overcurrent, when system begins to operate, and (the Current transformer of current transformer on the fluorescent tube loop; CT) the accurate position that detects signal is if be lower than safety value, and protective device then is failure to actuate, if the accurate position that detects signal then is considered as the stabilizer load and is in the following of overcurrent if be higher than safety value, this moment, protective device then started the load that lowers work system.
Simultaneously modular protector of the present invention also can detecting system in the working temperature of arbitrary assembly, its purpose is to provide another kind of data to come the abnormality of detecting system, the temperature of arbitrary assembly surpasses safety value in system, protective device be can start equally, and then lamp tube service life and fail safe thereof safeguarded; The present invention can be designed to be simultaneously hybrid (Hybrid) or integrated (Integrated Circuit; IC) packing, its purpose is to save the space, reduces cost and meets economic benefit.
Description of drawings
Fig. 1 is the modular protector circuit framework schematic diagram of electric stabilizer of the present invention;
Fig. 2 is the modular protector first embodiment schematic diagram of electric stabilizer of the present invention;
Fig. 3 is the modular protector second embodiment schematic diagram of electric stabilizer of the present invention;
Fig. 4 is modular protector the 3rd embodiment schematic diagram of electric stabilizer of the present invention;
Fig. 5 is modular protector the 4th embodiment schematic diagram of electric stabilizer of the present invention;
Fig. 6 is the fluorescent lamp system configuration diagram of the modular protector of using electric stabilizer of the present invention.
Embodiment
Relevant detailed content of the present invention and technology, conjunction with figs. is described as follows:
The present invention is a kind of modular protector of electric stabilizer; this modular protector is arranged in the Circuits System of the product with electric stabilizer; and when electric stabilizer produces overcurrent or excess temperature state the protection electric stabilizer; at first please refer to Fig. 1, be the modular protector circuit framework schematic diagram of electric stabilizer of the present invention.
The modular protector 10 of electric stabilizer of the present invention can include identifying unit 11; logic lock 12; pressurizer 13; filter 14; rectifier 15; protection controller 16; partial pressure unit 17; current limliting unit 18 and gate pole signal controller 19; wherein can comprise temperature in the identifying unit 11 and judge assembly 111 and electric current judgement assembly 112; temperature judges that assembly 111 is used to receive the temperature signal of excess temperature detector TH; and it is punctual to be higher than a trigger bit in this temperature signal; make temperature judge assembly 111 conductings; electric current judges that assembly 112 then is used to receive the current signal of overcurrent detector CT; and it is punctual to be higher than a trigger bit in this current signal; make electric current judge assembly 112 conductings; and logic lock 20 be one or the door (OR GATE); when temperature judges that assembly 111 and electric current are judged assembly 112 either party's conductings, transmit one and start signal.
And current limliting unit 18 is connected with logic lock 12; and will start signal and deliver to the circuit two ends in 182 minutes by the first current limliting assembly 181 and the second current limliting assembly; pressurizer 13 is used to limit the magnitude of voltage of modular protector 10; and filter 14 and pressurizer 13 and downlink connection; this filter 14 be a capacitance component can be used for filtering or with the abrupt voltage wave bypass to earth terminal G; rectifier 15 is used for rectification in addition behind the one resonance signal LC of connecting circuit system; protection controller 16 is connected with rectifier 15; and transmit synchronous triggering when starting signal in the second current limliting assembly 182; start modular protector 10; include variable dividing potential drop assembly 171 and dividing potential drop assembly 172 in the partial pressure unit 17; this variable dividing potential drop assembly 171 is a variable resistor; can come the modulation resistance according to the bearing power of modular protector 10, and receive and be connected the back with dividing potential drop assembly 172 behind the direct current power supply DC and form the branch pressure-controlled.
When modular protector 10 comes into operation, electric current judges that assembly 112 receives the current signal of overcurrent detector CT, judge that the trigger bit of assembly 112 is punctual if be lower than electric current, electric current is judged 112 not conductings of assembly, also represent that this work system is under the state of trouble free service, for reaching above-mentioned detecting action, electric current judgement assembly 112 can be selected Zener diode (Zener) or two-way triggering thyristor (DIAC) for use, if current signal is higher than the trigger bit standard that electric current is judged assembly 112, electric current is judged 112 conductings that are triggered of assembly, and be sent to logic lock 12 immediately and produce and start signals, and will start signal and come trigger protection controller 16 and gate pole signal controller 19 by current limliting unit 18, this protection controller 16 is that three end brake fluids trigger assembly, and also can select thyristor (Silicon ControlledRectifier for use; SCR), the reactance meeting on the resonant slots in the work system at this moment declines to a great extent, then branches in the protective device 10 work that Circuits System can not continued under the state of overcurrent; And gate signal controller 19 also is a switch module, can select transistor or relay for use, in receive be about to when starting signal gate controlling signal CS in addition bypass force to switch and stop.
Certainly temperature judges that assembly 111 also can operate the function of reaching detecting separately, temperature judges that assembly 111 receives the current signal of excess temperature detector TH, judge that the trigger bit of assembly 111 is punctual if be lower than temperature, temperature is judged 111 not conductings of assembly, also represent that this work system is under the state of trouble free service, for reaching above-mentioned detecting action, temperature judgement assembly 111 can be selected Zener diode (Zener) or two-way triggering thyristor (DIAC) equally for use, if temperature signal is higher than the trigger bit standard that temperature is judged assembly 111, temperature is judged 111 conductings that are triggered of assembly, and be sent to logic lock 12 immediately and produce and start signals, and will start signal and come trigger protection controller 16 and gate pole signal controller 19 by current limliting unit 18, reactance meeting on the resonant slots in the work system at this moment declines to a great extent because of the conducting bypass of protection controller 16, then branch in the modular protector 10 work that Circuits System can not continued under the state of excess temperature; And gate signal controller 19 equally in receive be about to when starting signal gate controlling signal CS in addition bypass force to switch and stop, with the risk of avoiding system to produce because of excess temperature.
Next just the execution mode of the protective device of electric stabilizer of the present invention is described in detail, please refer to Fig. 2, is the modular protector first embodiment schematic diagram of electric stabilizer of the present invention.
Modular protector of the present invention is for increasing its practicality, so can be designed to hybrid (Hybrid) or integrated (Integrated Circuit; IC) packing, can be as shown in FIG. when it is connected with the harmonic conversion unit of electric stabilizer, this harmonic conversion unit can be a series connection resonant circuit and connects fluorescent tube 30, this series resonant circuit can be divided into following work section, is: driver 21, transducer 22, LC resonator 23 and filter circuit 25; After DC power supply DC flows into; at first pass through driver 21; and taking-up gate controlling signal CS is sent to modular protector 10; excess temperature detector TH then is responsible for detecting and transmits temperature signal; overcurrent detector CT also can include a current transformer and form; be responsible for detecting and transmit current signal; and switch 22 is a half-bridge switch; 25 of filter circuits are formed by a plurality of capacitance components; during when series resonant circuit and in overcurrent or over-temperature condition generation, 10 of modular protectors can reduce the load of work system and protect whole electric stabilizer.
Preceding figure is depicted as an auto-excitation type series resonant circuit, next please continue with reference to Fig. 3, is the modular protector second embodiment schematic diagram of electric stabilizer of the present invention.
The present invention except can connect the auto-excitation type series resonant circuit; also can connect the independent-excited series resonant circuit; wherein the difference of auto-excitation type series resonant circuit and independent-excited series resonant circuit only is: independent-excited series resonant circuit system uses lock drive controlling integrated circuit 24 to substitute driver 21; after this lock drive controlling integrated circuit 24 receives working power Vcc; can be sent to modular protector 10 as the taking-up gate controlling signal CS as the driver 21; be same as the auto-excitation type circuit as for other action; owing in preamble, described in detail, so do not repeat them here.
Next please continue with reference to Fig. 4, be modular protector the 3rd embodiment schematic diagram of electric stabilizer of the present invention.
The harmonic conversion unit of electric stabilizer also can comprise the single-ended series resonant circuit of auto-excitation type except aforesaid series resonant circuit, and the single-ended series resonant circuit of this auto-excitation type can be divided into following work section, is: driver 21, transducer 22 and LC resonator 23; After DC power supply DC flows into, at first pass through driver 21, and taking-up gate controlling signal CS is sent to modular protector 10, excess temperature detector TH then is responsible for detecting and transmits temperature signal, overcurrent detector CT also can include a current transformer and form, be responsible for detecting and transmit current signal, 25 of filter circuits are formed by a plurality of capacitance components, during when series resonant circuit and in overcurrent or over-temperature condition generation, 10 of modular protectors can reduce the load of work system and protect whole electric stabilizer; Certainly except the single-ended series resonant circuit of auto-excitation type; modular protector of the present invention also can connect the single-ended series resonant circuit of independent-excited certainly; difference wherein only is that independent-excited is to use lock drive controlling integrated circuit 24 to substitute driver 21; all the other actions are not then being given unnecessary details at this as hereinbefore; please refer to Fig. 5, be modular protector the 4th embodiment schematic diagram of electric stabilizer of the present invention.
Except aforesaid various execution modes; the present invention is not violating the large-scale fluorescent lamp system that is equally applicable to one-to-many under the same invention spirit; next please continue with reference to Fig. 6, be the fluorescent lamp system configuration diagram of the modular protector of electric stabilizer of the present invention.
This large-scale fluorescent lamp system only has a filtering amending unit 40, this filtering amending unit 40 can include filter, rectifier and merit are because of working cells such as correctors, filtering amending unit 40 rear ends then can and connect the light emitting module of plural groups, after AC power AC handles through filtering amending unit 40, then be sent in each light emitting module, and also include harmonic conversion unit 20 (a～n) in each light emitting module, fluorescent lamp 30 (a～n) and modular protector 10 (a～n), be provided with in the harmonic conversion unit 20: transducer, driver, the loop lights a lamp, current transformer and LC resonator, (a～n) is used for changing voltage and produces high-frequency ac power in harmonic conversion unit 20, fluorescent-lamp-use 50 (a～n) after receiving working power to produce light source, (a～n) still protect each light emitting module when overcurrent condition produces makes and can use hybrid (Hybrid) or integrated (IntegratedCircuit modular protector 10 simultaneously; IC) packaged type more increases the convenience that circuit links.
Though the present invention discloses as above with aforesaid preferred embodiment; right its is not in order to limit the present invention; anyly be familiar with this technical staff; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when the content that claim defines that look application.
Claims (10)
1. the modular protector of an electric stabilizer, this modular protector is arranged in product one Circuits System with this electric stabilizer, and this modular protector includes:
One identifying unit, this identifying unit also include a temperature and judge assembly and electric current judgement assembly, wherein:
This temperature is judged assembly in order to receiving a temperature signal, and is higher than this temperature in this temperature signal and judges that assembly one trigger bit is punctual, makes this temperature judge the assembly conducting; And
This electric current is judged assembly in order to receiving a current signal, and is higher than this electric current in this current signal and judges that assembly one trigger bit is punctual, makes this electric current judge the assembly conducting;
One logic lock, this logic lock judges that with the temperature of this identifying unit assembly and electric current judgement assembly are connected, this logic lock is used to the temperature of this identifying unit to be judged when assembly and/or electric current are judged the assembly conducting, spreads out of one and starts signal;
One gate signal controller, this gate signal controller be in order to after receiving this startup signal, with gate signal bypass to an earth terminal of the power switch assembly of this Circuits System;
One partial pressure unit, this partial pressure unit be in order to connecting a direct current power supply, and connect combination to form a dividing potential drop effect with a plurality of dividing potential drop assemblies;
One rectifier, this rectifier is in order to connect rectification in addition behind the resonance signal in this Circuits System;
One protection controller, this protection controller and this rectifier are connected to form a contact, and this contact electrically connects with the dividing potential drop contact of this partial pressure unit again, and this protection controller is in order to after receiving this startup signal, with this identifying unit synchronous triggering, and with this resonance signal and this DC power supply bypass; And
One filter, this filter is connected with the gate of this protection controller, and this filter is in order to abrupt voltage wave bypass in addition.
2. the modular protector of electric stabilizer according to claim 1 is characterized in that, wherein this temperature judges that assembly is to appoint in a Zener diode (Zener) and the two-way triggering thyristor (DIAC) to get one.
3. the modular protector of electric stabilizer according to claim 1 is characterized in that, wherein this electric current judges that assembly is to appoint in a Zener diode (Zener) and the two-way triggering thyristor (DIAC) to get one.
4. the modular protector of electric stabilizer according to claim 1 is characterized in that, wherein this logic lock is one or door (OR GATE).
5. the modular protector of electric stabilizer according to claim 1 is characterized in that, wherein this protection controller is that one or three end brake fluids trigger assembly, and this triggering assembly is a thyristor (Silicon Controlled Rectifier; SCR).
6. the modular protector of electric stabilizer according to claim 1 is characterized in that wherein this filter is a capacitance component.
7. the modular protector of electric stabilizer according to claim 1 is characterized in that wherein this partial pressure unit includes:
One variable dividing potential drop assembly, this variable dividing potential drop assembly is a variable resistor, this variable dividing potential drop assembly is in order to come the modulation resistance according to this protective device one bearing power; And
One dividing potential drop assembly, this dividing potential drop assembly are connected the back and form this dividing potential drop effect with this variable dividing potential drop assembly.
8. the modular protector of electric stabilizer according to claim 1 is characterized in that, wherein connects the series connection resonant circuit of this modular protector for this electric stabilizer.
9. as the modular protector of electric stabilizer as described in the claim 8; it is characterized in that wherein this series resonant circuit is an optional one in an auto-excitation type series resonant circuit, an independent-excited series resonant circuit, the single-ended series resonant circuit of an auto-excitation type and the single-ended series resonant circuit of an independent-excited.
10. fluorescent lamp system with modular protector, this fluorescent lamp system includes:
One filtering amending unit, this filtering amending unit is in order to AC power filter rectification in addition; And
The plural groups light emitting module, this plural groups light emitting module is connected with this filtering amending unit, includes in this light emitting module:
One harmonic conversion unit, this harmonic conversion unit is connected with this filtering amending unit, and this harmonic conversion unit is in order to changing voltage and produce a high-frequency ac power;
One fluorescent lamp, this fluorescent lamp is connected with this harmonic conversion unit, and this fluorescent-lamp-use is to produce light source; And
One modular protector, this modular protector is connected with this harmonic conversion unit, this protective device protective device as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101344680A CN1984520B (en) | 2005-12-15 | 2005-12-15 | Modular protector of electronic positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101344680A CN1984520B (en) | 2005-12-15 | 2005-12-15 | Modular protector of electronic positioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1984520A CN1984520A (en) | 2007-06-20 |
| CN1984520B true CN1984520B (en) | 2011-06-29 |
Family
ID=38166634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005101344680A Active CN1984520B (en) | 2005-12-15 | 2005-12-15 | Modular protector of electronic positioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1984520B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095883A (en) * | 1993-05-18 | 1994-11-30 | 王固盘 | Electronic ballast |
| CN1429059A (en) * | 2001-12-27 | 2003-07-09 | 山拔克电子股份有限公司 | Fault protection circuit for electronic balast of fluorescent lamp |
| CN2731806Y (en) * | 2004-09-15 | 2005-10-05 | 青春茂 | Fully automatic emergency electronic stabilier |
-
2005
- 2005-12-15 CN CN2005101344680A patent/CN1984520B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095883A (en) * | 1993-05-18 | 1994-11-30 | 王固盘 | Electronic ballast |
| CN1429059A (en) * | 2001-12-27 | 2003-07-09 | 山拔克电子股份有限公司 | Fault protection circuit for electronic balast of fluorescent lamp |
| CN2731806Y (en) * | 2004-09-15 | 2005-10-05 | 青春茂 | Fully automatic emergency electronic stabilier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1984520A (en) | 2007-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5942314B2 (en) | Lighting device and lighting apparatus using the same | |
| CN103250467B (en) | Led drive circuit and led drive chip | |
| CN105474748A (en) | LED retrofit lamp having active over-current protection circuit | |
| CN207369352U (en) | The driving power of LED intelligent lamps | |
| CN107197568A (en) | The driving power source system of LED intelligent lamps | |
| CN206759775U (en) | A kind of LED drive circuit and LED light emission device | |
| CN1984520B (en) | Modular protector of electronic positioner | |
| CN201039531Y (en) | LED transformation drive circuit | |
| CN107734778A (en) | LED drive power circuit and luminaire | |
| CN201496907U (en) | LED street lamp with intelligent temperature control circuit | |
| CN1674757B (en) | Electromagnetic inductive lamp circuit | |
| CN1984521B (en) | Protector of electronic positioner | |
| CN103841707B (en) | Be associated with the load drive device of light-emitting diode | |
| CN203057664U (en) | High-performance long-life fluorescent lamp electronic ballast | |
| CN201726557U (en) | Special improved ballast for high-power energy saving lamp tube | |
| CN102480814A (en) | LED (light emitting diode) lamp control device capable of being controlled remotely | |
| CN203181310U (en) | High-power-efficiency LED illuminating lamp | |
| CN100508676C (en) | Full combination efficiency LED lamp | |
| CN205546025U (en) | LED sends out light controlling circuit with discernment power supply type | |
| Wang et al. | Study of high power white AC-LED based on the structure of composite bridge with SMD packaging | |
| JP2013046558A (en) | Power supply circuit and illumination device | |
| CN104168680B (en) | Counter-voltage reducing circuit of induction cooker and induction cooker including counter-voltage reducing circuit | |
| CN2622985Y (en) | Electronic ballast for high strength gas discharging lamp | |
| CN219960900U (en) | Electronic ballast circuit | |
| KR102592251B1 (en) | A converter for a resonant flicker-free LED lighting device that offsets transient power noise and maintains stable light output |
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 |