CN104918387B - A kind of LED light device of exchange driving - Google Patents
A kind of LED light device of exchange driving Download PDFInfo
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- CN104918387B CN104918387B CN201510353228.3A CN201510353228A CN104918387B CN 104918387 B CN104918387 B CN 104918387B CN 201510353228 A CN201510353228 A CN 201510353228A CN 104918387 B CN104918387 B CN 104918387B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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Abstract
The present invention relates to a kind of LED light devices of exchange driving comprising rectification unit, sampling unit, switch unit and at least one LED module.First output end of the rectification unit connects the sampling unit and the first LED module, the first input end of the switch unit connect the output end of corresponding LED module, and the second input terminal connects the partial pressure end of the sampling unit.The second output terminal of the output end of the switch unit and rectification unit ground connection.The switch unit includes third to the 5th resistance, the first and second zener diodes and the first and second field-effect tube.The present invention directly drives suitable for alternating current, with simple, small in size, light weight and cost the is low advantage of circuit.Meanwhile by preset shutdown voltage appropriate with connect voltage, avoid LED light device and flashed with AC voltage fluctuations.
Description
The present invention be original applying number be 201110457843.0, original application date is on December 31st, 2011, former denomination of invention
For the divisional application for the LED light emission device that alternating current directly drives.
Technical field
The present invention relates to LED (light emitting diode) lighting area more particularly to a kind of LED light devices of exchange driving.
Background technique
LED as a kind of new type of solid state light source, with its energy-saving and environmental protection, the service life is long the advantages that be expected to become a new generation's illumination
Light source.It is well known that existing LED is nearly all to use DC powered, and our production and living electricity is alternating current.Cause
This needs a power adapter, converts alternating current to direct current in LED product used at present.Power adapter
It introduces, brings many negative effects.First, service life of the service life of power adapter well below LED itself, so that lighting device
Service life shorten；Second, power adapter can reduce the efficiency of light emitting device；Third, power supply turns in low-power applications
Parallel operation can cause the increase of decline and the current total harmonic distortion of power factor.In order to give full play to the advantage of semiconductor lighting,
Current research hotspot can be become with the LED light emission device that alternating current directly drives.
It is whole according to reverse parallel connection or bridge-type using plurality of LEDs component mostly in existing AC LED public technology
The circuit topological structure of stream is formed by connecting, to meet the driving requirement of AC power.But alternating current is according to certain frequency
Cyclic fluctuation, due to the presence of LED itself cut-in voltage, when instantaneous voltage is more than cut-in voltage, LED can be just connected simultaneously
It shines.Conversely, LED be off it is non-luminous.This circuit makes the luminous efficiency of LED very low, and with alternating voltage wave
It is dynamic luminescent scintillation occur.
International monopoly WO 2004/023568A1 " LIGHT-EMITTING DEVICE HAVING LIGHT-EMITTING
In ELEMENTS ", integrated LED chip array on a sapphire substrate is proposed, to provide a kind of hair of AC power driving
Electro-optical device, but the light-emitting flash without solving the problems, such as LED.
United States Patent (USP) US 7,489,086B2 " AC LIGHT EITTING DIODE AND AC LED DRIVE
METHODS AND APPARATUS " provides a kind of AC LED device, which is a kind of device by multiple LED integration packagings
Part makes up LED luminescent scintillation caused by alternating current using the visual persistence effect of human eye.The patent is without fundamentally
Solve luminescent scintillation caused by AC voltage cycle fluctuation.
As it can be seen that all there is a disadvantage: the driving current of LED can be with exchange in disclosing LED alternating-current actuation techniques
The fluctuation of voltage and the phenomenon that fluctuate, cause LED brightness change occur when shining, generate light-emitting flash.Meanwhile LED component
Core is a PN junction diode, and I-V characteristic is approximate exponential function, after the voltage when the both ends LED is greater than cut-in voltage,
The electric current for flowing through PN junction is exponentially increased.The AC driving method of the prior art may be directly when alternating voltage surprisingly increases
Damage LED component.
Chinese patent CN 102202441A discloses a kind of current constant control that LED illumination lamp is directly powered with AC power source
Device topological circuit comprising EMI circuit, rectification circuit, circuit of power factor correction and constant-current drive circuit.Its working method
Are as follows: circuit of power factor correction changes leading for power factor control circuit 31 and 32 according to the big minizone of input ac voltage
Logical state, so that the quantity of lighting of LED illumination lamp changes, thus increase power factor.In actual work, power factor
As long as the equivalent switch of control circuit 31,32 will switch immediately when reaching 1/3,2/3 crest voltage, so as to improve power because
Number.Referring to Fig. 1, in power factor control circuit 31,32 on state of K1, K2 only by corresponding biasing resistor R6, R7 or
The influence of voltage on the circuit of R8, R9 composition.Further, due to using common switching topological circuit, power
As long as the equivalent switch of factor control circuit 31,32 will switch immediately when reaching 1/3,2/3 crest voltage, so as to cause switching
When will appear flashing state.
Each switch unit in the present invention receives cut-in voltage and sampled unit through corresponding LED light source mould group
It divides end and receives shutdown voltage, joint effect of the on off operating mode of switch unit by cut-in voltage and shutdown voltage.Further
Ground, the present invention does not use the common switching topological circuit as disclosed in D1, but uses switch unit from corresponding LED
Negative terminal and sampling unit the partial pressure end of light source module group receive cut-in voltage and shutdown voltage.Switch unit reception reaches threshold value
Cut-in voltage and be connected, and on state is maintained to turn it off until received shutdown voltage reaches the threshold value of setting.Each open
Specific turn-on time can be maintained as required by closing unit, so as to avoid multi-stage LED mould group in the size according to input voltage
The scintillation that will appear when directly switching.
The company of constant-current circuit input terminal in the connection type and documents of two input terminals of switch unit of the invention
Mode is connect there are significant difference, and there is also differences for the particular circuit configurations of constant current unit in switch unit and documents:
The grid of metal-oxide-semiconductor V2 connects the partial pressure end of R3 and R4 in constant-current source 42, and the grid of switch unit M2 connects R5 in the present invention.These
Difference in structure results in of the invention and documents working methods, and there are differences above-mentioned.
In conclusion the technical issues of aforementioned comparison's file solves exchanges the power factor for driving LED how to improve, this
The flashing that the technical issues of invention solves occurs for the multi-stage LED mould group that how to overcome alternating current to directly drive with voltage fluctuation
Situation.The technical issues of the two solves is different, and the technological means used, the working method of driving circuit are also different.Therefore,
Aforementioned comparison's file does not have technical inspiration to the present invention.
Summary of the invention
The technical problems to be solved by the invention directly drive LED light emission device aiming at prior art alternating current and make
At light-emitting flash the shortcomings that, a kind of LED light emission device that alternating current directly drives is provided, overcome LED caused by alternating current dodge
Bright phenomenon, and the efficiency of LED light emission device is improved, extend the service life of LED.
The present invention solves the technical problem, the technical solution adopted is that, the LED light emission device that alternating current directly drives,
Including ac input end, protection location and rectification unit, which is characterized in that the first output end of the rectification unit passes through n
LED module and a switch unit are connected to second output terminal, wherein n >=1, and are integer；As n >=2, every two LED mould
The channel constituted between group there are also switch unit is connect with second output terminal, each switch unit is connect with sampling unit；
The ac input end provides operating current for connecting alternating current for device；
The protection location is connect with ac input end, is provided protection against for device；
The rectification unit is connect with protection location, is rectified to the alternating current of protection location output；
The sampling unit outputs a control signal to each switch for sampling to the output voltage of rectification unit
Unit；
The switch unit is connect with sampling unit, is turned off or is connected according to the control signal of sampling unit output.
LED light emission device circuit of the invention is made of n grades of LED module cascades, appropriate preset each by sampling unit
What grade LED module corresponded to switch unit switches off and on voltage, scintillation occurs when can be to avoid AC voltage fluctuations.
The quantity for increasing LED module, is equivalent to the conducting voltage for reducing every level-one LED module, improves the utilization rate of power supply.It is multistage
LED module is in application, when AC voltage fluctuations, and each LED module is by being influenced the opposite influence using single module more
Small, the stability of LED operation is also more preferable, more reliable, and the ability of anti-AC voltage fluctuations is stronger.
Specifically, the n LED module is made of LED array.
High-power LED mould group can be formed using LED array.
Further, the LED array is made of at least one LED being arranged on same printed circuit board；Or it is integrated
At least one LED of encapsulation on the same substrate is constituted；Or integrated at least one LED on the same semiconductor substrate is constituted.
LED all in LED module is arranged on same printed circuit board, is most simply most passed through under state-of-the-art
The packaging method of Ji；It or on the same substrate by LED integration packaging all in LED module, i.e., will be all in LED module
LED carries out secondary encapsulation, is integrated on same heat-radiating substrate；Or integrate on the same semiconductor substrate, this is to use partly to lead
Body integrated circuit technology realizes that LED's is integrated in same semiconductor-based on piece.These technologies can also will be in each LED module
LED interlaced arrangement, improve the uniformity of illuminating device luminous brightness, and be conducive to overcome scintillation, LED encapsulation wiring
It is more convenient.
Specifically, the LED is in parallel and/or is connected in series.
LED connection combination appropriate in LED module, such as in parallel, series connection or mixed connection, more can adapt to alternating current and directly drive
Dynamic use environment easily adjusts electric current, the voltage parameter of each LED module.
Specifically, the protection location includes fuse and/or varistor, the fuse is connected on exchange input
End, the varistor are connected in parallel on ac input end.
Fuse is common current-limiting protection element, and varistor is then common voltage-limiting protection element, their combination
Most basic current limliting and voltage-limiting protection can be completed, and at low cost, it is easy for installation, it is convenient for Two-level ensemble.
Further, the protection location further includes common mode choke and/or gas-discharge tube, the common mode choke string
It is associated in ac input end, the gas-discharge tube is connected in parallel on ac input end.
Common mode choke can inhibit common mode interference, and gas-discharge tube can protect lighting device and not injured by thunder and lightning etc..
Specifically, full-wave rectification or half-wave rectifying circuit that the rectification unit is made of rectifier diode are constituted.
Using rectifier diode as rectifier cell, small in volume encapsulates convenient for Two-level ensemble.
Specifically, the sampling unit is made of resistor network.
Resistor network is very suitable to acquisition DC parameter, is convenient for configuration switch unit operating point.
Specifically, the switch unit is made of transistor, the transistor controls pole is connect with sampling unit.
The characteristics of transistor as switch element there is control to be easy, contactless, the long-life.
More specifically, the transistor is field effect transistor or bipolar junction transistor, and the control extremely field-effect is brilliant
The grid of body pipe or the base stage of bipolar junction transistor.
Transistor switching element, technology maturation are quick on the draw, reliable in action.
The invention has the advantages that directly driving LED module using AC power, circuit is simple, small in size, weight
Gently, at low cost.By preset shutdown voltage appropriate, realize that AC power directly drives LED matrix in AC voltage fluctuations
When will not flash.Also, when alternating current instantaneous voltage is excessively high, switch unit shutdown, LED module does not shine, and improves electricity
The utilization efficiency in source, reduces power consumption.Meanwhile also avoid LED module because electric current is excessive burn the case where, extend dress
The service life set.
Detailed description of the invention
Fig. 1 is the structural block diagram of embodiment 1；
Fig. 2 is the circuit diagram of embodiment 1；
Fig. 3 is the structural block diagram of embodiment 2；
Fig. 4 is the structural block diagram of embodiment 3；
Fig. 5 is the circuit diagram of embodiment 3.
Specific embodiment
With reference to the accompanying drawings and embodiments, the technical schemes of the invention are described in detail.
The LED light emission device that alternating current of the invention directly drives, including ac input end, protection location, rectification unit,
Sampling unit, switch unit and n LED module, wherein n >=1, and be integer.In light emitting device of the present invention, the of rectification unit
One output end (generally direct current output anode) is connected to second output terminal (direct current by n LED module and a switch unit
Export negative terminal).When LED module quantity is more than 2, there are also the channels and that switch unit is constituted between every two LED module
The connection of two output ends.Each switch unit is connect with sampling unit, is controlled by it.LED light emission device circuit of the invention,
It is made of, the shutdown of switch unit is corresponded to by the appropriate preset every level-one LED module of sampling unit and connects n grades of LED module cascades
Be powered pressure, scintillation occurs when can be to avoid AC voltage fluctuations.Increase the quantity of LED module, being equivalent to reduces
The conducting voltage of every level-one LED module, improves the utilization rate of power supply.Multi-stage LED mould group is in application, work as AC voltage fluctuations
When, each LED module is opposite smaller using the influence of single module by being influenced, and the stability of LED operation is also more preferable, more may be used
It leans on, the ability of anti-AC voltage fluctuations is stronger.
Embodiment 1
Referring to Fig. 1 and Fig. 2, this example light emitting device includes ac input end 1, protection location 2, rectification unit 3, sampling unit
4, switch unit 6 and LED module 5, the quantity of this example LED module 5 are 1 (i.e. n=1).First output end of this example rectification unit
For direct current output anode 31, which is connected to second output terminal direct current output negative terminal 32 by 5 switch unit 6 of LED module.
Referring to Fig. 1.Ac input end 1 is connect with the end alternating current L (phase line) and N-terminal (zero curve), and alternating current is introduced protection location 2.It protects
Shield unit 2 provides whole device basic defencive function, is made of varistor VR and fuse F, fuse F is connected on phase
On line, varistor is connected in parallel between phase line and zero curve, sees Fig. 2.For being applied to particular surroundings, protection location 2 can also be wrapped
Include common mode choke and gas-discharge tube.Common mode choke is connected in phase line and zero curve, and gas-discharge tube is generally connected in parallel on
Between phase line and zero curve.The full-wave rectifying circuit D that this example rectification unit 3 is made of rectifier diode is formed, and is carried out to alternating current
Full-wave rectification.This example voltage sampling unit 4 is made of the resistor network that sampling resistor R1 and R2 are formed, by sampling rectified current
The DC voltage of road D output, control switch unit 6.As shown in Figure 2.This example switch unit 6 is by MOSFET (metal oxide half
Conductor field effect transistor, abbreviation field-effect tube) M1 and M2 and zener diode DZ1, DZ2, resistance R3, R4 and R5 constitute.This
Example LED module 5 is made of the array that the LED of more series, parallel or mixed connection is formed, and can be arranged on same printed circuit
The multiple LED of multiple LED or integration packaging on same heat-radiating substrate on plate, or it is integrated in same semiconductor lining
The integrated circuit that multiple LED on bottom are constituted.
When the instantaneous voltage of alternating current reaches the cut-in voltage of LED module 5, driving of the switch unit 6 in sampling unit 4
Lower conducting, LED module 5 start to shine；When the instantaneous voltage of alternating current is more than preset shutdown voltage, switch unit 6 is turned off,
LED module 5 stops shining；When alternating current fluctuates, within normal operating voltage range, i.e. opening in LED module 5
When opening between voltage and preset shutdown voltage, the time point of the changed only turn-on and turn-off of switch unit 6, LED
Shining for mould group 5 will not flash.
As shown in Fig. 2, rectification circuit D output plus terminal is connected with one end of resistance R1, while being connected to LED module just
End, the output negative terminal of rectification circuit D is as ground.One end of the other end of resistance R1 and resistance R2, zener diode DZ1 it is negative
One end connection at end, resistance R3；The other end of resistance R3 is connect with the grid of field-effect tube M1, the drain electrode of field-effect tube M1, electricity
Hinder the negative terminal connection of one end of R4, one end of resistance R5, zener diode DZ2.The other end of resistance R5 is with field-effect tube M2's
Grid connection, the drain electrode of field-effect tube M2, the negative terminal connection of the other end of resistance R4, LED module.It is the other end of resistance R2, steady
The anode of pressure pipe DZ1, the anode of voltage-stabiliser tube DZ2, the source electrode of field-effect tube M1, field-effect tube M2 source electrode be connected to (direct current
Export negative terminal).
When ac input end 1 is connect with power grid, this lighting device obtains AC power, by protection location 2, and by rectifying
Unit 3, is rectified into direct current, is supplied to sampling unit 4, switch unit 6 and LED module 5.In each ac cycle, rectification
Circuit D output voltage is started from scratch rising, when voltage is increased to the cut-in voltage of switch unit, field-effect tube M1 shutdown, and M2
Conducting, LED module 5 start to shine；Increase as input voltage increases the electric current that LED module passes through, in voltage lower than preset
The voltage stage is turned off, the undertension that sampling unit 4 exports is so that field-effect tube M1 is connected, and M1 is held off, and M2 is held on,
5 continuous illumination of LED module；When voltage surprisingly increases, and is more than preset shutdown voltage, M1 is begun to turn on, M2 shutdown, LED mould
Group does not shine, and protects LED module 5 from the impact of high current.
Embodiment 2
As shown in figure 3, this example light emitting device LED module 5 has 2, switch unit 6 is also 2,3 anode 31 of rectification unit
By 2 LED modules and the 2nd switch unit 6 (switch unit 2 being labeled as in figure, other switch units mark is similar) with
The connection of 3 negative terminal 32 of rectification unit, has the 1st switch unit 6 to constitute between the 1st LED module 5 and the 2nd LED module 5
Channel is connect with 3 negative terminal 32 of rectification unit.All switch units 6 of this example are connect with sampling unit 4.
Embodiment 3
As shown in figure 4, this example light emitting device LED module 5 has 3, switch unit 6 is also 3,3 anode 31 of rectification unit
It is connect by 3 LED modules and the 3rd switch unit 6 with 3 negative terminal 32 of rectification unit, (is marked in figure in the 1st LED module 5
For LED module 1, other LED modules mark is similar) and the 2nd LED module 5 between there is the 1st switch unit 6 to constitute
Channel is connect with 3 negative terminal 32 of rectification unit.There are also the 2nd switch units between the 2nd LED module 5 and the 3rd LED module 5
6 channels constituted are connect with 3 negative terminal 32 of rectification unit.All switch units 6 of this example are connect with sampling unit 4.
The circuit diagram of this example device as shown in figure 5, its working principle and particular circuit configurations are similar to Example 1,
It is not repeating herein.This example sampling unit 4 is made of resistance R1, R2, R6, R7, R11, R12, three switch units 6 and 3
LED module group 5 controls three LED modules at three-level circuit, three switch units 6 respectively, is respectively set often by sampling unit 4
The level-one switch-off time, and corresponding LED module 5 is protected.With the increase of LED module quantity, it is equivalent to drop
The low conducting voltage of each LED module, improves the utilization rate of power supply.Multi-stage LED mould group is in application, work as alternating voltage wave
When dynamic, each LED module is opposite smaller using the influence of single module by being influenced, and the stability of LED operation is also more preferable, more
Reliably, the ability of anti-AC voltage fluctuations is stronger.
Through above-mentioned detailed explaination, it can be seen that voltage sampling unit monitoring input voltage of the invention, while also having
To the defencive function of LED module.When big fluctuation occurs in alternating voltage, switch unit can also disconnect in time, protect LED
Mould group is not damaged because electric current is excessive.
Although the present invention is simultaneously unlimited it should be understood that structure of the invention is described in detail in above-described embodiment
In the conventional replacing structure that above-described embodiment, all those skilled in the art are carried out according to foregoing description, the present invention is belonged to
Protection scope.
Claims (8)
1. a kind of LED light device of exchange driving comprising rectification unit, sampling unit, N number of switch unit and N number of LED mould
Group, the first output end of the rectification unit connects the input terminal of the sampling unit and N number of LED module, feature exist
In the first input end of each switch unit connects the output end of corresponding LED module, and it is single that the second input terminal connects the sampling
The partial pressure end of member, the second of the output end of each switch unit, the output end of the sampling unit and the rectification unit
Output end ground connection；Wherein, N is the integer more than or equal to 2；
Each switch unit includes third to the 5th resistance, the first and second zener diodes and first and second effects
Ying Guan, wherein
One end of 3rd resistor is connected to the partial pressure end of the sampling unit；
The negative terminal of first zener diode divides press bond, positive ending grounding with the sampling unit；
The grid of first field-effect tube is connected to the other end of 3rd resistor, source electrode ground connection；
The drain electrode of first field-effect tube, one end of the 4th resistance, one end of the 5th resistance and the second zener diode negative terminal connect
It connects；
The other end of 5th resistance is connect with the grid of the second field-effect tube；The drain electrode of second field-effect tube, the 4th resistance it is another
One end is connected with the output end of corresponding LED module；
The anode of second zener diode and the source electrode of the second field-effect tube ground connection；
Wherein, each LED module is made of the array that the LED of more series, parallel or mixed connection is formed；
The sampling unit is made of the resistor network that sampling resistor forms.
2. LED light device as described in claim 1, which is characterized in that wherein, each LED module is multi-stage LED mould
Level-one LED module in group；
By the shutdown voltage and connection voltage of the preset switch unit corresponding with every level-one LED module of the sampling unit to keep away
Exempt to flash when AC voltage fluctuations；
Wherein, described to fluctuate the variation for referring to alternating voltage sine.
3. LED light device as claimed in claim 2, which is characterized in that the rectification unit was made of rectifier diode
Full-wave rectifying circuit or half-wave rectifying circuit are constituted.
4. LED light device as described in claim 1, which is characterized in that the LED array is by being arranged in same printed circuit
Multiple LED on plate are constituted.
5. LED light device as described in claim 1, which is characterized in that the LED array is by integration packaging in same substrate
On multiple LED constitute.
6. LED light device as described in claim 1, which is characterized in that the LED array is served as a contrast by being integrated in same semiconductor
Multiple LED on bottom are constituted.
7. the LED light device as described in one of claim 1 to 6, which is characterized in that the LED light device further includes protecting
Unit is protected, the protection location includes fuse and/or varistor, and the fuse is connected on ac input end, the pressure
Quick resistor coupled in parallel is in ac input end.
8. LED light device as claimed in claim 7, which is characterized in that the protection location further include common mode choke and/
Or gas-discharge tube, the common mode choke are connected on ac input end, the gas-discharge tube is connected in parallel on ac input end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510353228.3A CN104918387B (en) | 2011-12-31 | 2011-12-31 | A kind of LED light device of exchange driving |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110457843.0A CN103188845B (en) | 2011-12-31 | 2011-12-31 | The LED light emission device of alternating current Direct driver |
| CN201510353228.3A CN104918387B (en) | 2011-12-31 | 2011-12-31 | A kind of LED light device of exchange driving |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110457843.0A Division CN103188845B (en) | 2011-12-31 | 2011-12-31 | The LED light emission device of alternating current Direct driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104918387A CN104918387A (en) | 2015-09-16 |
| CN104918387B true CN104918387B (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510353228.3A Active CN104918387B (en) | 2011-12-31 | 2011-12-31 | A kind of LED light device of exchange driving |
| CN201110457843.0A Active CN103188845B (en) | 2011-12-31 | 2011-12-31 | The LED light emission device of alternating current Direct driver |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110457843.0A Active CN103188845B (en) | 2011-12-31 | 2011-12-31 | The LED light emission device of alternating current Direct driver |
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| CN (2) | CN104918387B (en) |
| WO (1) | WO2013097692A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102892238B (en) * | 2012-10-30 | 2015-02-04 | 四川新力光源股份有限公司 | Dimming drive circuit of AC (Alternating Current) direct drive LED module |
| CN104540287B (en) * | 2012-10-30 | 2017-11-17 | 四川新力光源股份有限公司 | LED dimming driving circuits |
| CN104427688B (en) * | 2013-08-23 | 2016-09-28 | 四川新力光源股份有限公司 | LED alternating-current drive circuit |
| CN104936330B (en) * | 2014-03-18 | 2020-05-19 | 赵依军 | LED driving power supply and LED lighting device comprising same |
| FR3020122B1 (en) * | 2014-04-22 | 2018-07-13 | Renault S.A.S. | METHOD FOR CONTROLLING A LIGHT EMITTING DIODE LIGHT OR SIGNALING LIGHT FOR A MOTOR VEHICLE |
| CN104519645B (en) * | 2014-11-27 | 2019-01-08 | 上海航空电器有限公司 | A kind of guide-lighting drive circuit based on PWM light modulation |
| CN104582137B (en) * | 2014-11-28 | 2019-01-04 | 上海航空电器有限公司 | The multi-level dimming circuit of three kinds of alarm signals |
| US9913325B1 (en) * | 2017-02-03 | 2018-03-06 | Semiconductor Components Industries, Llc | LED direct AC drive circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186282A (en) * | 2011-03-21 | 2011-09-14 | 中国航天科技集团公司第九研究院第七七一研究所 | Drive circuit capable of improving power factors of alternating current light emitting diode (AC LED) lamp |
| CN102209415A (en) * | 2011-05-30 | 2011-10-05 | 桂林源通网络软件有限公司朝阳路分公司 | Light emitting diode (LED) alternating-current direct power supply circuit |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004045054A1 (en) * | 2002-11-11 | 2004-05-27 | The Circle For The Promotion Of Science And Engineering | Filter device |
| CN100424958C (en) * | 2004-10-26 | 2008-10-08 | 曾献昌 | A, C, mains overvoltage protector having metalic ceramic gas discharge tube |
| CN2750324Y (en) * | 2004-11-23 | 2006-01-04 | 桐乡市永泰隆电子有限公司 | Three-phase four-wire electric energy meter |
| TWI270033B (en) * | 2005-06-02 | 2007-01-01 | Au Optronics Corp | Liquid crystal display and light emitting diode drive circuit thereof |
| KR100727354B1 (en) * | 2005-11-09 | 2007-06-13 | 주식회사 유양정보통신 | Constant Current Pulse Width Modulation Driving Circuit for Light Emitting Diode |
| CN201178507Y (en) * | 2008-04-14 | 2009-01-07 | 曹型勇 | Constant-current automatic light regulating electric source for LED traffic light |
| CN101674692B (en) * | 2008-09-12 | 2013-07-10 | 连营科技股份有限公司 | Light emitting diode (LED) driving device and illuminating system |
| US8174212B2 (en) * | 2008-11-30 | 2012-05-08 | Microsemi Corp.—Analog Mixed Signal Group Ltd. | LED string driver with light intensity responsive to input voltage |
| CN102202441A (en) * | 2010-03-23 | 2011-09-28 | 陕西西电科大华成电子股份有限公司 | Constant-current controller topology circuit powered directly by alternating current power supply for LED lighting lamp |
| CN102892238B (en) * | 2012-10-30 | 2015-02-04 | 四川新力光源股份有限公司 | Dimming drive circuit of AC (Alternating Current) direct drive LED module |
-
2011
- 2011-12-31 CN CN201510353228.3A patent/CN104918387B/en active Active
- 2011-12-31 CN CN201110457843.0A patent/CN103188845B/en active Active
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2012
- 2012-12-25 WO PCT/CN2012/087382 patent/WO2013097692A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186282A (en) * | 2011-03-21 | 2011-09-14 | 中国航天科技集团公司第九研究院第七七一研究所 | Drive circuit capable of improving power factors of alternating current light emitting diode (AC LED) lamp |
| CN102209415A (en) * | 2011-05-30 | 2011-10-05 | 桂林源通网络软件有限公司朝阳路分公司 | Light emitting diode (LED) alternating-current direct power supply circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104918387A (en) | 2015-09-16 |
| CN103188845A (en) | 2013-07-03 |
| WO2013097692A1 (en) | 2013-07-04 |
| CN103188845B (en) | 2015-08-05 |
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