CN103813577A - Self-oscillation LED (Light Emitting Diode) driving system and semiconductor lighting device - Google Patents
Self-oscillation LED (Light Emitting Diode) driving system and semiconductor lighting device Download PDFInfo
- Publication number
- CN103813577A CN103813577A CN201210459804.9A CN201210459804A CN103813577A CN 103813577 A CN103813577 A CN 103813577A CN 201210459804 A CN201210459804 A CN 201210459804A CN 103813577 A CN103813577 A CN 103813577A
- Authority
- CN
- China
- Prior art keywords
- control unit
- diode
- switch element
- oscillation
- self
- 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
Abstract
The invention discloses a self-oscillation LED (Light Emitting Diode) driving system and a semiconductor lighting device. The driving system comprises a rectifying device, for connecting an external power supply and performing rectification and smoothing; a starting device, for connecting the rectifying device; a power unit, which is connected with the starting device and comprises a power supply control unit for controlling the power supply to a load; a switch unit, for controlling the power supply control unit; a signal control unit, wherein the auxiliary winding of an inductive element is connected with resistive and capacitive elements to form into self-oscillation so as to control the switch unit. The semiconductor light source driving system and the semiconductor lighting device provided by the invention are simple in structure and low in cost.
Description
technical field
The present invention relates to a kind of drive system of semiconductor light sources, and more particularly, relate to a kind of self-oscillation LED drive system and semiconductor illumination device.
background technology
Semiconductor light sources (LED) is light source and the display device of third generation semi-conducting material manufacturing, has that power consumption is few, the life-span long, a feature such as pollution-free, rich color, controllability are strong, is the revolution of lighting source and light industry.Along with the development of LED, increasing LED illuminating product floods the market.The electric drive part of LED is an indispensable part in LED illuminating product.
LED market at present, LED lamp terminal price is still higher than conventional bulb and electricity-saving lamp, and price reduction has become the key that expands market acceptance.Along with the continuous decline of LED particle price, the price ratio of electric drive part is more aobvious important, popularizes in the market the LED driver circuit using and mostly adopts IC to control, and its major defect is exactly that Costco Wholesale is higher.
Therefore, how to provide a kind of optical semiconductor source driving system simple in structure, that cost is low to become the outstanding problem of semiconductor applications development.For problems of the prior art, this programme proposes a kind of self-oscillation LED drive system and semiconductor illumination device is one of optical semiconductor source driving system technical field problem at present anxious to be resolved.
summary of the invention
The object of this invention is to provide a kind of simple in structure, the non-constant width of range of application, with low cost mainly for the electric drive circuit in LED illuminating product.The present invention uses less components and parts to realize the electric drive part of LED, has greatly reduced component number and cost, and the ratio that electric drive part is accounted in LED illuminator is significantly dwindled, and the feature that lamps structure is simple, cost is low, loss in efficiency reduces.
The embodiment of the present invention provides a kind of self-oscillation LED drive system, and described drive system comprises: rectifying device, for connecting external power source, carries out rectification and filtering; Starting drive, connects rectifying device; Electric supply installation, is connected with starting drive, and electric supply installation comprises that supply control unit carries out power supply control to load; Switch element is controlled supply control unit; Signaling control unit, is formed self-oscillation switch element is controlled around connecting resistive and capacitive element by the pair of inductive element.
According to the embodiment of the present invention, described signaling control unit is controlled switch element (300) around (201) series connection capacitive elements (203) and the self-oscillation of resistance element (204) formation by the pair of inductive element (202).
According to the embodiment of the present invention, the first end (301) of described switch element (300) is connected with the second end of the resistance element (204) of signaling control unit.
According to the embodiment of the present invention, described signaling control unit is made up of inductive element (202), diode (401) and capacitive element (402), wherein, the first end of diode (401) is connected with the first end of capacitive element (402), the second end of capacitive element (402) is connected with the first end of inductive element (202), and the second end of the second end of inductive element (202), diode (401) is connected in second end (302) of switch element (300).
According to the embodiment of the present invention, described starting drive comprises resistance element (101), diode (102), wherein, the first end of resistance element (101) is connected in rectifying device, the second end of resistance element (101) is connected in the first end of diode (102), and the second end ground connection of diode (102).
A kind of semiconductor illumination device, comprising:
Semiconductor light sources load;
Rectifying device, for connecting external power source, carries out rectification and filtering;
Starting drive, connects rectifying device;
Electric supply installation, is connected with starting drive, and electric supply installation comprises that supply control unit carries out power supply control to load;
Switch element is controlled supply control unit;
Signaling control unit, is formed self-oscillation switch element is controlled around connecting resistive and capacitive element by the pair of inductive element.
According to the embodiment of the present invention, described load is single or multiple LED groups.
According to the embodiment of the present invention, the constituted mode of described LED group includes but not limited to be connected in series or is connected in parallel or mixed type syndeton that connection in series-parallel connects is electrically connected.
According to below with reference to the accompanying drawing description of this invention, other targets of the present invention and effectiveness will become apparent, and reader can fully understand the present invention.
accompanying drawing explanation
Fig. 1 is LED drive system modular structure connection diagram;
Fig. 2 is the LED driving system circuit figure according to the embodiment of the present invention;
Fig. 3 is according to the electric supply installation structural representation of the LED drive system of the embodiment of the present invention;
Fig. 4 is the schematic diagram of working according to the LED drive system of the embodiment of the present invention startup stage;
Fig. 5 is LED drive system the first energy storage stage work schematic diagram according to the embodiment of the present invention;
Fig. 6 releases according to the LED drive system of the embodiment of the present invention schematic diagram of working in the stage;
Fig. 7 is LED drive system the second energy storage stage work schematic diagram according to the embodiment of the present invention.
In above-mentioned accompanying drawing, same reference numerals identical, the similar or corresponding element of indication or function.
embodiment
Below describe specific embodiments of the invention with reference to graphic in detail by embodiment.
The present invention uses less components and parts to realize the electric drive part of LED, has greatly reduced component number and cost, and the ratio that electric drive part is accounted in LED illuminator is significantly dwindled.
Fig. 1 is self-oscillation LED drive system modular structure connection diagram of the present invention.
Rectifying device, for connecting external power source, carries out rectification and filtering;
Starting drive, connects rectifying device;
Electric supply installation, is connected with starting drive, and electric supply installation comprises that supply control unit carries out power supply control to load;
Switch element is controlled supply control unit;
Signaling control unit, is formed self-oscillation switch element is controlled around connecting resistive and capacitive element by the pair of inductive element.
Fig. 2 is the LED driving system circuit figure according to the embodiment of the present invention.
Particularly, in embodiments of the present invention, rectifying device 10, the interchange that includes fuse 11 (AC) power supply being provided by outside is provided in its one end, and the other end (output) 13 is connected to load device 40;
Starting drive 20, for connecting rectifying device 10;
Electric supply installation 30, be connected with starting drive 20, by inductive element 202 via pair around 201 connection resistance elements 204 and capacitive element 203, as the control section of switch element 300, the load device 40 that electric supply installation 30 is connected carries out power supply control, for when drive system is connected with load device 40, cooperation rectifying device 10 is powered to load device 40, and the first output 31 of electric supply installation 30 and the second end output 32 are connected to load device 40.
In Fig. 2, external communication (AC) power supply (for example, 120VAC) can be business AC line voltage distribution, and when as shown in Figure 2 bridge diode 12(being comprised to four unipolar tube D1, D2, D3, D4) while being applied to rectifying device 10, can be full-wave rectified voltage by the AC Voltage-output of input, and suitable electric current is offered to load device 40.
In this article, interchange (AC) power supply of what outside provided include fuse 11, its input voltage range is for exchanging (AC) power supply 120V/50 ~ 60Hz ~ 240V/50 ~ 60Hz, and input voltage range is direct current (DC) power supply 12V ~ 400V.
As shown in Figure 2, in this programme, use a small amount of components and parts to be combined to form self-oscillation circuit, in conjunction with step-down circuit, form a LED electronic driver.On an inductive element, using secondary making is the control signal input of a switch element, resistance element of middle series connection and size and the time that capacitive element is inputted as control signal, use the discharge and recharge control of a diode as capacitive element, use this inductive element to connect a diode and the output of a capacitive element generation direct current.
Particularly, in the present embodiment, starting drive 20 comprises resistance element 101, diode 102, wherein, the first end of resistance element 101 is connected in one end of rectifying device 10, and the second end of resistance element 101 is connected in the first end of diode 102, and the second end ground connection of diode 102.
Electric supply installation 30 comprises inductive element 201 and 202, capacitive element 203, resistance element 204, switch element 300, diode 401 and capacitive element 402, wherein, the first end of the first end of diode 401 and the resistance element 101 of starting drive 20 be connected, the second end of resistance element 101 is connected with the second end of resistance element 204 and the first end 301 of switch element 300 respectively, the second end of the diode 102 of starting drive 20 is connected with the 3rd end 303 of switch element 300 and ground connection, the first end of capacitive element 203 is connected with inductive element 201 first ends, ground connection of inductive element 201 second ends, the second end of capacitive element 203 is connected with the first end of resistance element 204, the first end of inductive element 202 is connected with the second end of capacitive element 402, the second end of inductive element 202 is connected with the second end 302 of the second end of diode 401 and switch element 300.
Load device 40 comprises and load unit 501, and wherein, capacitive element 402 and the load unit 501 of electric supply installation 30 are connected in parallel.
As shown in Figure 2, in this programme, use a small amount of components and parts to be combined to form self-oscillation circuit, in conjunction with step-down circuit, form a LED electronic driver.On an inductive element 202, use secondary around 201, be the control signal input of inductive element 201 as a switch element 300, resistance element 204 of middle series connection and size and the time that capacitive element 203 is inputted as control signal, use charging and the control of discharge of a diode 401 as capacitive element 402, use this inductive element 202 to connect a diode 401 and capacitive element 402 produces direct current output.
Therefore, further, as shown in Figure 3, in this programme, electric supply installation 30 can comprise signaling control unit, switch element and supply control unit, the size of inputting by signaling control unit control signal and time, and according to switch element, load device is carried out to power supply control.Wherein, signaling control unit comprise secondary around 201, capacitive element 203 and resistance element 204, forming self-oscillation by the pair of inductive element 202 around 201 series connection capacitive elements 203 and resistance element 204 controls switch element 300, wherein, the first end of diode 401 is connected with the first end of capacitive element 402, the second end of capacitive element 402 is connected with the first end of inductive element 202, and the second end of the second end of inductive element 202, diode 401 is connected in the second end 302 of switch element 300.
In addition, switch element, comprises a switch element 300, is connected in the supply control unit of starting drive 20 and electric supply installation 30, and wherein, the first end 301 of switch element 300 is connected with the second end of the resistance element 204 of signaling control unit; Supply control unit, comprises an inductive element 202, diode 401 and capacitive element 402, is connected in above-mentioned switch element and load device 40, for load device 40 being carried out to power supply control according to switch element.
Wherein, supply control unit carries out power supply control to load;
Switch element is controlled supply control unit;
Signaling control unit, is formed self-oscillation switch element is controlled around connecting resistive and capacitive element by the pair of inductive element.
Therefore, in embodiments of the present invention, by using inductive element pair around connecting a resistance element and capacitive element control section as a switch element, form a self-oscillation circuit, and this inductive element and switch element are connected with load (LED), and using this inductive element and switch element junction as positive voltage deferent segment, this output is also in series with a diode.
Further, in the present invention, the output current scope 20mA ~ 300mA of electric supply installation 30, output voltage range 12V ~ 300V.
In Fig. 2, particularly, in this programme, load device 40 is single or multiple LED groups.Load device 40 can be the light source 501 that comprises at least one LED, and can comprise multiple LED with various electrical connections.In Fig. 2, form multiple LED of load device 40 and illustrate with the state being connected in series, but in load device 40, included multiple LED also can be according to the application system of application LED and to be connected in series or to be connected in parallel or mixed type syndeton that connection in series-parallel connects is electrically connected.
Further, in embodiments of the present invention, described starting drive 20 in the time starting (, in the time that input voltage vin initially applies) make switch element 300 in electric supply installation 30 in conducting state.Described power supply control apparatus 30 comprises signaling control unit, supply control unit, signal generating unit and switch element, and the inductive element 202 in described supply control unit is for receiving input voltage and carrying out energy storage and release energy under the control of described switch element.Described signal generating unit is subject to the induction of the inductive element in described supply control unit to produce induced signal, for controlling conducting and the cut-off of described switch element.Diode 401 in described supply control unit is for according to the energy storage of the inductive element of described supply control unit with release and can differently power to described load device (semiconductor light sources).
Startup stage: as shown in Figure 4, when optical semiconductor source driving system of the present invention is connected to after DC input voitage Vin, Vin carries out discharge generation electric current I 1 by base stage 301 and the emitter 303 of resistance element 101 and switch element 300, makes collector electrode 302 and emitter 303 conductings of switch element 300.Vin is by capacitive element 402 and load unit 501, and the collector electrode 302 of inductive element 202 and switch element 300 and emitter 303 carry out discharge generation electric current I 2.After this, optical semiconductor source driving system of the present invention entered for the first energy storage stage.
The first energy storage stage: as shown in Figure 5, I2 is by capacitive element 402, capacitive element 402 starts charging, I2 is by load simultaneously, the semiconductor light sources load open light that starts, I2 is again by inductive element 202, and inductive element 202 energy storage also produce voltage V2 at its two ends, synchronous signal generating unit 201 is subject to inductive element 202 inductions to produce induced electromotive force V1, and V1 carries out discharge generation electric current I 3 by base stage 301 and the emitter 303 of capacitive element 203, resistance element 204 and switch element 300.I3 charges to capacitive element 203.Capacitive element 203 two ends produce direction as shown voltage V3.Along with the rising of V3, I3 declines, and makes to close element 300 thereupon and end.But because the electric current that flows through inductive element 202 can not suddenly change, therefore this electric current flow to semiconductor light sources load unit 501 and capacitive element 402 by diode 401, and make inductive element 202 both end voltage V2 reverse.After this, optical semiconductor source driving system of the present invention enters and releases the energy stage.
Release the energy stage: as shown in Figure 6, the induced electromotive force V1 that signal generating unit 201 is produced by inductive element 202 inductions is reverse equally.V1 carries out discharge generation electric current I 4 by diode 102, resistance element 204, capacitive element 203.Switch element 300 ends.Inductive element 202 both end voltage V2 discharge by diode 401 and capacitive element 402 and semiconductor light sources load unit 501, and inductive element 202 is released energy, are that capacitive element 402 chargings produce voltage V5 simultaneously.To capacitive element, 203 reverse chargings produce reverse voltage V4 to electric current I 4.In the time that inductive element 202 both end voltage V2 drop to lower than capacitive element 402 both end voltage V5, stop releasing energy.After this, optical semiconductor source driving system of the present invention entered for the second energy storage stage.This second energy storage stage and described the first energy storage stage are different, and in this second energy storage stage, described semiconductor light sources supported V is luminous.
The second energy storage stage: as shown in Figure 7, capacitive element 402 both end voltage V5 discharge by semiconductor light sources load unit 501, capacitive element 203 both end voltage V4 discharge by the base stage 301 of resistance element 204, switch element 300 and the inductive element 201 of emitter 303 and signal generating unit, generation current I5, makes collector electrode 302 and emitter 303 conductings of switch element 300.Vin carries out discharge generation electric current I 2 by collector electrode 302 and the emitter 303 of inductive element 202 and switch element 300.Inductive element 202 energy storage, produce voltage V2 at its two ends.Next, continue to describe with reference to the supply control unit in the first energy storage stage diagram and switch element.The inductive element 201 of signal generating unit is subject to inductive element 202 inductions to produce induced electromotive force V1, and V1 carries out discharge generation electric current I 3 by base stage 301 and the emitter 303 of capacitive element 203, resistance element 204 and switch element 300.I3 charges to capacitive element 203.Capacitive element 203 two ends produce direction as shown voltage V3.Along with the rising of V3, I3 declines, and makes switch element 300 end thereupon.But because the electric current that flows through inductive element 202 can not suddenly change, therefore this electric current flow to semiconductor light sources load unit 501 by diode 401, and make inductive element 202 both end voltage V2 reverse.After this, optical semiconductor source driving system of the present invention again enters and releases the energy stage.
Then, optical semiconductor source driving system of the present invention can enter for the second energy storage stage from releasing in the stage again, so circulation.
Above-described embodiment is exemplary, and does not wish that they limit technical method of the present invention.Although describe the present invention in detail with reference to preferred embodiment; but be understood by those skilled in the art that; can replace technical method of the present invention in the case of not departing to revise or be equal to the spirit of the technology of the present invention method and category, these modifications and be equal to the protection category that replacement also belongs to the claims in the present invention book.
Claims (8)
1. a self-oscillation LED drive system, comprising:
Rectifying device, for connecting external power source, carries out rectification and filtering;
Starting drive, connects rectifying device;
Electric supply installation, is connected with starting drive, and electric supply installation comprises that supply control unit carries out power supply control to load;
Switch element is controlled supply control unit;
Signaling control unit, is formed self-oscillation switch element is controlled around connecting resistive and capacitive element by the pair of inductive element.
2. drive system as claimed in claim 1, described signaling control unit is controlled switch element (300) around (201) series connection capacitive elements (203) and the self-oscillation of resistance element (204) formation by the pair of inductive element (202).
3. drive system as claimed in claim 1, the first end (301) of described switch element (300) is connected with the second end of the resistance element (204) of signaling control unit.
4. drive system as claimed in claim 1, described signaling control unit is made up of inductive element (202), diode (401) and capacitive element (402), wherein, the first end of diode (401) is connected with the first end of capacitive element (402), the second end of capacitive element (402) is connected with the first end of inductive element (202), and the second end of the second end of inductive element (202), diode (401) is connected in second end (302) of switch element (300).
5. drive system as claimed in claim 1, described starting drive comprises resistance element (101), diode (102), wherein, the first end of resistance element (101) is connected in rectifying device, the second end of resistance element (101) is connected in the first end of diode (102), and the second end ground connection of diode (102).
6. a semiconductor illumination device, comprising:
Semiconductor light sources load;
Rectifying device, for connecting external power source, carries out rectification and filtering;
Starting drive, connects rectifying device;
Electric supply installation, is connected with starting drive, and electric supply installation comprises that supply control unit carries out power supply control to load;
Switch element is controlled supply control unit;
Signaling control unit, is formed self-oscillation switch element is controlled around connecting resistive and capacitive element by the pair of inductive element.
7. semiconductor illumination device as claimed in claim 6, described load is single or multiple LED groups.
8. semiconductor illumination device as claimed in claim 6, the constituted mode of described LED group includes but not limited to be connected in series or is connected in parallel or mixed type syndeton that connection in series-parallel connects is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459804.9A CN103813577B (en) | 2012-11-15 | 2012-11-15 | A kind of self-oscillation LED drive system and semiconductor illumination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459804.9A CN103813577B (en) | 2012-11-15 | 2012-11-15 | A kind of self-oscillation LED drive system and semiconductor illumination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103813577A true CN103813577A (en) | 2014-05-21 |
| CN103813577B CN103813577B (en) | 2016-06-15 |
Family
ID=50709626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210459804.9A Active CN103813577B (en) | 2012-11-15 | 2012-11-15 | A kind of self-oscillation LED drive system and semiconductor illumination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103813577B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105228288A (en) * | 2014-05-30 | 2016-01-06 | 欧普照明股份有限公司 | The constant-current drive circuit of luminescent device and driving method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6856103B1 (en) * | 2003-09-17 | 2005-02-15 | Varon Lighting, Inc. | Voltage regulator for line powered linear and switching power supply |
| JP2008166165A (en) * | 2006-12-28 | 2008-07-17 | Toshiba Lighting & Technology Corp | Lighting device |
| US20100308733A1 (en) * | 2009-06-09 | 2010-12-09 | Stmicroelectronics, Inc. | Apparatus and method for constant power offline led driver |
| CN101932170A (en) * | 2009-06-22 | 2010-12-29 | 凹凸电子（武汉）有限公司 | Drive circuit and method, electronic system and the controller of load |
| US20100328972A1 (en) * | 2008-05-15 | 2010-12-30 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Voltage converter circuit and method for a clock supply of energy to an energy storage |
| CN102141205A (en) * | 2010-02-03 | 2011-08-03 | 联笙电子股份有限公司 | Light source system capable of effectively dissipating heat |
-
2012
- 2012-11-15 CN CN201210459804.9A patent/CN103813577B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6856103B1 (en) * | 2003-09-17 | 2005-02-15 | Varon Lighting, Inc. | Voltage regulator for line powered linear and switching power supply |
| JP2008166165A (en) * | 2006-12-28 | 2008-07-17 | Toshiba Lighting & Technology Corp | Lighting device |
| US20100328972A1 (en) * | 2008-05-15 | 2010-12-30 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Voltage converter circuit and method for a clock supply of energy to an energy storage |
| US20100308733A1 (en) * | 2009-06-09 | 2010-12-09 | Stmicroelectronics, Inc. | Apparatus and method for constant power offline led driver |
| CN101932170A (en) * | 2009-06-22 | 2010-12-29 | 凹凸电子（武汉）有限公司 | Drive circuit and method, electronic system and the controller of load |
| CN102141205A (en) * | 2010-02-03 | 2011-08-03 | 联笙电子股份有限公司 | Light source system capable of effectively dissipating heat |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105228288A (en) * | 2014-05-30 | 2016-01-06 | 欧普照明股份有限公司 | The constant-current drive circuit of luminescent device and driving method |
| CN105228288B (en) * | 2014-05-30 | 2018-03-06 | 欧普照明股份有限公司 | The constant-current drive circuit and driving method of luminescent device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103813577B (en) | 2016-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202721866U (en) | New type driving circuit which is compatible with LED lamp tube | |
| CN202603010U (en) | Driving circuit of compatible LED (Light Emitting Diode) lamp tube | |
| CN105576951B (en) | Current-limiting method and current limliting constant current combined electrical source circuit and its control method | |
| CN103220856A (en) | Self-adapting light emitting diode (LED) driving power circuit | |
| CN101394135B (en) | Control system and controller power source for electric appliance | |
| CN103813577A (en) | Self-oscillation LED (Light Emitting Diode) driving system and semiconductor lighting device | |
| CN108633136A (en) | A kind of highly integrated LED driving encapsulation | |
| CN202663608U (en) | Driving system for semiconductor light source and semiconductor illuminating device | |
| CN202197439U (en) | Electrodeless constant current driving circuit for light-emitting diode (LED) automobile lamp | |
| CN101626650A (en) | LED lamp drive circuit | |
| CN106954304A (en) | A kind of large power long life-span AC LED lamp drive control circuit | |
| CN202979391U (en) | LED drive system and semiconductor lighting device | |
| CN208094852U (en) | A kind of highly integrated LED driving encapsulation | |
| CN202979363U (en) | Multi-output LED driving system and semiconductor lighting device | |
| CN102946665A (en) | Multiway-out LED driving system and semi-conductor lighting device | |
| CN203661357U (en) | Light emitting diode lighting system | |
| CN207652724U (en) | A kind of lamps and lanterns with fan | |
| CN107710872A (en) | LED light source with improved aura reduction | |
| CN201601859U (en) | Non-isolated LED driving circuit | |
| CN103687209A (en) | Alternating-current drive circuit of LED streetlight | |
| CN205793491U (en) | A kind of three section type light regulating control circuit of LED | |
| CN206629307U (en) | A kind of large power long life-span AC LED lamp drive control circuit | |
| CN206136398U (en) | Durable drive power supply based on inquiry system terminal | |
| CN202514132U (en) | LED dimming power supply | |
| CN203206545U (en) | AC-drive infrared induction LED lamp |
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 |