CN104661408B - LED light adjusting circuits and LED lamp - Google Patents
LED light adjusting circuits and LED lamp Download PDFInfo
- Publication number
- CN104661408B CN104661408B CN201510070717.8A CN201510070717A CN104661408B CN 104661408 B CN104661408 B CN 104661408B CN 201510070717 A CN201510070717 A CN 201510070717A CN 104661408 B CN104661408 B CN 104661408B
- Authority
- CN
- China
- Prior art keywords
- output
- voltage
- pwm signal
- power
- switch
- 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
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052710 silicon Inorganic materials 0.000 abstract description 11
- 239000010703 silicon Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 4
- 238000011217 control strategy Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 210000001367 artery Anatomy 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007540 photo-reduction reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention provides the invention provides a kind of LED lamp, its LED light adjusting circuit included, it is connected with dimmer switch, including rectification filtering unit, switching device, switch control chip, output unit, sampling resistor and power adjustment unit, the power adjustment unit gathers the waveform of the output voltage of the output end of the dimmer switch, when the waveform is normal sine wave, the power output of the output unit is adjusted according to the qualified break-make number of times of the output voltage；When the waveform is to be chopped into sine wave, then it is maximum to adjust the power output of the output unit.Above-mentioned LED light adjusting circuits are by detecting the current waveform through overregulating switch, the characteristic to the Different Effects of electric current is switched according to regular tap and controllable silicon regulation, judge that the type of regulation switch controls the power output of circuit thereby using different control strategies, realize the compatibility of stepless dimming and sectional dimming.
Description
Technical field
The present invention relates to LED illumination technology, more particularly to a kind of LED light adjusting circuits and LED lamp.
Background technology
Existing segmented light modulation, is by different on-off times, to produce correspondence using common wall type switch
Power output and brightness.Circuit realiration is to use the functional circuit that number of times is opened with identification switch, circuit is produced correspondence
Power output and LED is sent different brightness.But its weakness is that light modulation is to be segmented, generally only 2~4 sections, no
Can stepless linear adjustment brightness.Advantage is simple using installing.
Existing controllable silicon light modulation, is to need to use special controllable silicon dimmer, and special has thyristor regulating
The power supply or light source of light function could be used cooperatively.Its advantage is that stepless dimming can be achieved, but it can not be with sectional dimming
It is general.
The content of the invention
Present invention aims at provide it is a kind of can compatible stepless dimming and sectional dimming LED light adjusting circuits.
The invention provides a kind of LED light adjusting circuits, be connected with dimmer switch, including rectification filtering unit, switching device,
Switch control chip, output unit, sampling resistor and power adjustment unit, wherein：
The input of the rectification filtering unit connects AC power by the dimmer switch, and the output of output termination is single
The positive input terminal of member, the negative input end of the input termination output unit of the switching device, the output of the switching device
End passes through sampling resistor ground connection, the pwm signal that the switch control chip is exported by its output end to the switching device
Control end, controls the break-make of the switching device to control the output of the output unit；One end of the power adjustment unit
Connect the output end of the dimmer switch, the pwm signal input port of another termination switch control chip；
The power adjustment unit gathers the waveform of the output voltage of the output end of the dimmer switch, when the waveform is
During normal sine wave, the power adjustment unit is exported according to the qualified break-make number of times regulation of the output voltage
The dutycycle of pwm signal, the switch control chip is exported according to the duty cycle adjustment itself of the pwm signal received
The dutycycle of pwm signal, to adjust the power output of the output unit；When the waveform for when being chopped into sine wave, then institute
It is fixed value to state power adjustment unit and adjust the dutycycle of exported pwm signal, and the switch control chip is according to connecing
The dutycycle for the pwm signal that the duty cycle adjustment of the pwm signal of receipts is exported itself, to adjust the output work of the output unit
Rate is maximum.
Present invention also offers a kind of LED lamp, it is connected with dimmer switch, including above-mentioned LED light adjusting circuits.
Above-mentioned LED light adjusting circuits are by detecting the current waveform through overregulating switch, according to regular tap and controllable silicon
Regulation switch judges that the type of regulation switch controls electricity thereby using different control strategies to the characteristic of the Different Effects of electric current
The power output on road, realizes the compatibility of stepless dimming and sectional dimming.Two different light modulation work(are realized with same circuit
Can, then make people very easy to use, meet different product demand.
Brief description of the drawings
Fig. 1 is the module diagram of LED light adjusting circuits in present pre-ferred embodiments；
Fig. 2 is the circuit theory diagrams of LED light adjusting circuits shown in Fig. 1.
Embodiment
In order that technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
The LED light adjusting circuits in the LED lamp in Fig. 1 and Fig. 2, present pre-ferred embodiments, i.e. Switching Power Supply are referred to,
Output end L, the zero line output end N of the LED light adjusting circuits respectively with dimmer switch 10 are connected, and LED light adjusting circuits are filtered including rectification
Ripple unit 100, switching device Q1, switch control chip U1, output unit 200, sampling resistor R0 and power adjustment unit
300.Switch control chip U1 is power-supply controller of electric, and concrete model circuit is depending on the circuit topology of selected Switching Power Supply.
In the present embodiment, switch control chip U1 illustrates embodiment by taking model SSL2129 series of power controllers as an example.
The input of rectification filtering unit 100 meets AC power AC, output termination output unit 200 by dimmer switch 10
Positive input terminal, switching device Q1 input termination output unit 200 negative input end, switching device Q1 output end is by adopting
Sample resistance R0 is grounded, the control of the pwm signal that switch control chip U1 is exported by its pwm signal output end 5 to switching device Q1
End processed, controlling switch device Q1 break-make is to control the output voltage of output unit 200；One termination of power adjustment unit 300
The output end (fire wire output end L or zero line output end N) of dimmer switch 10, the pwm signal of another termination switch control chip is defeated
Inbound port 3.Switch control chip U1 pwm signal output end 5 connects switching device Q1 control end by an output resistance.
The output voltage V of the output end of the collection dimmer switch 10 of power adjustment unit 300LWaveform, when waveform is normal
During sine wave, dimmer switch 10 is judged as a common one logical disconnected key switch, power adjustment unit 300 is according to output voltage
VLQualified break-make number of times adjusts the dutycycle for the pwm signal that its output port is exported, switch control chip U1 according to
Duty cycle adjustment itself (the pwm signal output port 5) institute for the pwm signal (pwm1) that (pwm signal input port 3) is received is defeated
Make-and-break time in the dutycycle of the pwm signal (pwm2) gone out, a controlling switch device Q1 pulse signal is to adjust output
The power output of unit 200, it is the high-speed switch number of times of dimmer switch 10 that the break-make number of times is corresponding, and its condition is to open twice
Time to be more than preset time, preset time can be set as 1,2,3 seconds etc..When waveform is to be chopped into sine wave, judge
Dimmer switch 10 is that controllable silicon adjusts switch, then power adjustment unit 300 adjusts the dutycycle of exported pwm signal (pwm1)
The pwm signal exported for fixed value, switch control chip U1 according to the duty cycle adjustment itself of the pwm signal of connect reception
(pwm2) dutycycle, the controlling switch device Q1 constantly on power output to adjust output unit 200 is maximum, i.e.,
Under current input power, the peak power that switching power circuit can be output.In the present embodiment, above-mentioned fixed value is 100%.
Rectification filtering unit 100 can using the circuit realiration shown in Fig. 2, can also according to selected Switching Power Supply circuit
Topology and select other traditional circuits.
Output unit 200 includes the first diode D1, magnetic bead P1, non-isolated transformer, voltage-regulator diode D2, the first filtering
Electric capacity C1 and the first output resistance R1.
First diode D1 negative electrode connects the output end of rectification filtering unit 100, the master of non-isolated transformer by magnetic bead P1
The one of coil T1-1 terminates the sun of the first diode D1 anode, switching device Q1 input and the voltage-regulator diode D2
Pole, the negative electrode of voltage-regulator diode connects the output end of rectification filtering unit 100, and the first filter capacitor C1 two ends connect rectification filter respectively
The main coil T1-1 of the output end of the ripple unit 100 and non-isolated transformer other end, the first output resistance R1 and the first filtered electrical
Hold C1 in parallel.
Output unit 200 also includes common mode inductance T2 and the second filter capacitor C2, common mode inductance T2 two inputs point
The first output resistance R1 two ends are not connect, and two output ends connect the second filter capacitor C2 two ends, the second filter capacitor C2 respectively
Positive-negative output end LED+, LED- also respectively as LED light adjusting circuits of two ends.
Power adjustment unit 300 is included in input detecting circuit 320 and single-chip microcomputer U2, the present embodiment, and single-chip microcomputer U2 is selected
Model 12CONA04 chips.In other embodiments, concrete model circuit is according to the circuit topology of selected Switching Power Supply
It is fixed.
The output end of the input termination dimmer switch 10 of input detecting circuit 320, output end output detection voltage VJTo list
Piece machine U2 inputting testing terminal 4.Single-chip microcomputer U2 judges the detection voltage V that input detecting circuit 320 is exportedJWaveform, work as ripple
When shape is normal sine wave, dimmer switch 10 is judged as a common one logical disconnected key switch, single-chip microcomputer U2 is according to detection electricity
Press VJQualified break-make number of times, pwm signal output end 5/6 exported by output resistance R2 and corresponding with break-make number of times accounted for
The pwm signal (pwm1) of empty ratio is to switch control chip U1 pwm signal input port 3, and switch control chip U1 is according to the PWM
Signal (pwm1) adjusts the pwm signal (pwm2) of itself pwm signal output port 5 output, a controlling switch device Q1 arteries and veins
The make-and-break time rushed in signal is to change the power output of output unit 200；When waveform for when being chopped into sine wave, judgement is dimmed
Switch 10 is that controllable silicon adjusts switch, and single-chip microcomputer U2 pwm signal output end 5/6 is by output resistance R2 output duty cycles
100% pwm signal (pwm1) is to switch control chip U1 pwm signal input port 3, and controlling switch device Q1 is constantly on
So that the power output of output unit 200 is maximum.
More specifically in embodiment, when waveform is normal sine wave, power adjustment unit 300 (single-chip microcomputer U2) is according to defeated
Go out voltage VLQualified break-make number of times adjusts the dutycycle of exported pwm signal (pwm1) to switch control chip U1,
Switch control chip U1 adjusts the dutycycle of the pwm signal (pwm2) itself exported and power adjustment unit 300 exported
The dutycycle of pwm signal (pwm1) is identical.In other embodiments, when waveform is normal sine wave, switch control chip
U1 adjusts the pwm signal (pwm1) that the dutycycle of the pwm signal (pwm2) itself exported and power adjustment unit 300 are exported
Dutycycle can be set as changing in proportion, such as one gradually rise, another is gradually reduced, or both simultaneously rise
Or lower, but rate of change is differed.
Input detecting circuit 320 includes detection resistance R3, the first voltage-regulator diode D3, divider resistance R4 and the first voltage stabilizing electricity
Hold C3, the fire wire output end L or zero line output end N of a detection resistance R3 termination dimmer switch 10, another voltage stabilizing of termination first
Diode D3 negative electrode, the first voltage-regulator diode D3 anode connects single-chip microcomputer U2 inputting testing terminal 4, and passes through divider resistance
R4 is grounded, and the first electric capacity of voltage regulation C3 is in parallel with divider resistance R4.
Power adjustment unit 300 also includes the power circuit 340 powered for single-chip microcomputer U2.Power circuit 340 includes starting
Resistance R5 and R6, the second diode D4, the second electric capacity of voltage regulation C4, the second output resistance R7, the 3rd voltage-regulator diode D5 and the 3rd
Filter capacitor C5.
Start resistance R5 and R6 a termination output end of rectification filtering unit 100, the other end is by meeting the second diode D4
Negative electrode and be grounded by the second electric capacity of voltage regulation C4, the second diode D4 anode connects the first boost line of non-isolated transformer
T1-2 Same Name of Ends is enclosed, first ancillary coil T1-2 other end ground connection, the second output resistance R7 mono- terminates the second diode
D4 negative electrode, another voltage-regulator diode D5 of termination the 3rd negative electrode and single-chip microcomputer U2 power port, the 3rd voltage-regulator diode D5
Plus earth, the second filter capacitor C5 is in parallel with the 3rd voltage-regulator diode D5.
In the above-described embodiments, switching device Q1 is N-type metal-oxide-semiconductor, first switch pipe Q1 input, output end, control
End is respectively metal-oxide-semiconductor drain electrode, source electrode, grid.Switch control chip U1 pwm signal output end 5 is connect by a dead resistance R9
Switching device Q1 control end, and dead resistance R9 and meet a reverse flow diode D6.Switch control chip U1 its
He refers to Fig. 2 at the connected mode of pin, can be according to depending on the circuit topology of selected Switching Power Supply.
LED light adjusting circuit workflows are as follows：When in circuit being regular tap, open after switch, by input detection electricity
Road 320 inputs the inputting testing terminal 4 for being given to single-chip microcomputer U2, and detection input voltage V is responsible in this portLWave character, use
Come the switchtype being given in single-chip microcomputer U2 internal judgment circuits.If the result detected is regular tap, single-chip microcomputer work
Make in sectional dimming pattern, and when switch makees the switch motion of corresponding number of times, then single-chip microcomputer is in pwm signal output port 5/6
The pwm signal (pwm1) for exporting corresponding default dutycycle arrives switch control chip U1, and switch control chip U1 believes according to the PWM
Number (pwm1) adjusts the pwm signal (pwm2) that itself pwm signal output end 5 is exported, with controlling switch device Q1 in an arteries and veins
The make-and-break time rushed in the cycle, changes the peak point current of LED dimming power source circuits, so that power output is respectively maximum work
Rate/half-power/10% power, three kinds of states, to obtain different brightness.Such as it is initially opened switch, single-chip microcomputer U2 pwm signal
The dutycycle for the pwm signal (pwm1) that output port 5/6 is exported is 100%, the pwm signal of switch control chip U1 outputs
(pwm2) dutycycle is 100%, now exports total power；Second of shut-off is switched and opened at the appointed time, then monolithic
The dutycycle of the pwm signal (pwm1) of machine U2 outputs is 50%, the duty of the pwm signal (pwm2) of switch control chip U1 outputs
Than for 50%, being now output as half-power；Third time turns off and opens switch, then the pwm signal (pwm1) of single-chip microcomputer U2 outputs
Dutycycle be 10%, switch control chip U1 output pwm signal (pwm2) dutycycle be 10%, be now output as 10%
Power.
When accessing controllable silicon regulation switch in LED light adjusting circuits, single-chip microcomputer U2 is inputted according to input detecting circuit 320
Waveform, and work in controllable silicon light modulation mode.That is the dutycycle of the pwm signal (pwm1) of single-chip microcomputer U2 locking outputs is 100%,
So that the dutycycle of the pwm signal (pwm2) of switch control chip U1 locking outputs is 100%, so that in thyristor regulating photoreduction process
The middle amplitude of accommodation linear change power according to controllable silicon, without jumping into segmented model, does not interfere with the normal of controllable silicon
Work.
Single-chip microcomputer U2 is used for detecting and recognizing the working condition of LED light adjusting circuits, by changing the peak in LED power circuit
Value electric current changes power output, the dutycycle of the pwm signal (pwm2) by adjusting switch control chip U1 outputs, for cutting
Change and change the mode of output current to change power output.
LED light adjusting circuits are opened by detecting the current waveform through overregulating switch according to regular tap and controllable silicon regulation
The characteristic to the Different Effects of electric current is closed, judges that the type of regulation switch controls the defeated of circuit thereby using different control strategies
Go out power, realize the compatibility of stepless dimming and sectional dimming.Two different dimming functions are realized with same circuit, then are made
People are very easy to use, meet different product demand.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (9)
1. a kind of LED light adjusting circuits, are connected with dimmer switch, it is characterised in that including rectification filtering unit, switching device, open
Control chip, output unit, sampling resistor and power adjustment unit are closed, wherein：
The input of the rectification filtering unit connects AC power by the dimmer switch, the output termination output unit
Positive input terminal, the negative input end of the input termination output unit of the switching device, the output end of the switching device is led to
Over-sampling resistance eutral grounding, the control of the pwm signal that the switch control chip is exported by its output end to the switching device
End, controls the break-make of the switching device to control the output of the output unit；One end connection of the power adjustment unit
Between the output end of the dimmer switch and the input of rectification filtering unit, another termination switch control chip
Pwm signal input port；
The power adjustment unit gathers the waveform of the output voltage of the output end of the dimmer switch, when the waveform is normal
During sine wave, the power adjustment unit adjusts exported PWM according to the qualified break-make number of times of the output voltage to be believed
Number dutycycle, the pwm signal that the switch control chip is exported according to the duty cycle adjustment itself of the pwm signal received
Dutycycle, make-and-break time in a pulse signal of controlling switch device is to adjust the power output of the output unit；
When the waveform for when being chopped into sine wave, then the dutycycle that the power adjustment unit adjusts exported pwm signal is solid
Definite value, pwm signal that the switch control chip is exported according to the duty cycle adjustment itself of the pwm signal of connect reception is accounted for
Sky ratio, the constantly on power output to adjust the output unit of controlling switch device is maximum；
The output unit includes the first diode, magnetic bead, non-isolated transformer, the second voltage-regulator diode, the first filter capacitor
With the first output resistance, wherein：
The negative electrode of first diode connects the output end of the rectification filtering unit, the non-isolated transformation by the magnetic bead
Anode, the input of the switching device and second voltage stabilizing two of one termination first diode of the main coil of device
The anode of pole pipe, the negative electrode of second voltage-regulator diode connects the output end of the rectification filtering unit, first filtered electrical
The two ends of appearance connect the other end of the main coil of the rectification filtering unit output end and the non-isolated transformer, described respectively
One output resistance is in parallel with first filter capacitor.
2. LED light adjusting circuits as claimed in claim 1, it is characterised in that the power adjustment unit includes input detection electricity
Road and single-chip microcomputer, the output end of the input termination dimmer switch of the input detecting circuit, output end output detection voltage
To the inputting testing terminal of the single-chip microcomputer；
The single-chip microcomputer judges the waveform of the detection voltage of the input detecting circuit output, when waveform is normal sine wave,
The single-chip microcomputer exports dutycycle corresponding with the break-make number of times according to the qualified break-make number of times of the detection voltage
Pwm signal to the switch control chip；When waveform for when being chopped into sine wave, the single-chip microcomputer output duty cycle is fixation
The pwm signal of value is to the switch control chip, and the power output for making the output unit is maximum.
3. LED light adjusting circuits as claimed in claim 2, it is characterised in that the fixed value is 100%.
4. LED light adjusting circuits as claimed in claim 1, it is characterised in that when the waveform is normal sine wave, the work(
Rate adjustment unit adjusts the dutycycle of exported pwm signal according to the qualified break-make number of times of the output voltage to described
Switch control chip, the switch control chip adjusts the dutycycle and the power adjusting list of the pwm signal itself exported
The dutycycle for the pwm signal that member is exported is identical.
5. LED light adjusting circuits as claimed in claim 3, it is characterised in that the input detecting circuit includes detection resistance, the
One voltage-regulator diode, divider resistance and the first electric capacity of voltage regulation, the live wire of a termination dimmer switch of the detection resistance are defeated
Go out end or zero line output end, the negative electrode of another termination first voltage-regulator diode, the anode of first voltage-regulator diode connects
The inputting testing terminal of the single-chip microcomputer, and be grounded by the divider resistance, first electric capacity of voltage regulation and partial pressure electricity
Resistance is in parallel.
6. LED light adjusting circuits as claimed in claim 3, it is characterised in that the power adjustment unit also includes being the list
The power circuit that piece machine is powered.
7. LED light adjusting circuits as claimed in claim 1, it is characterised in that the output unit also includes common mode inductance and the
Two filter capacitors, two inputs of the common mode inductance connect the two ends of first output resistance, two output ends point respectively
The two ends of second filter capacitor are not connect, and the two ends of second filter capacitor are also respectively as the positive and negative of LED light adjusting circuits
Output end.
8. LED light adjusting circuits as claimed in claim 2, it is characterised in that the power circuit includes starting resistance, the two or two
Pole pipe, the second electric capacity of voltage regulation, the second output resistance, the 3rd voltage-regulator diode and the 3rd filter capacitor, wherein；
The termination rectification filtering unit output end for starting resistance, the other end is by connecing the moon of second diode
Pole is simultaneously grounded by second electric capacity of voltage regulation, and it is first auxiliary that the anode of second diode connects the non-isolated transformer
The Same Name of Ends of index contour circle, the other end ground connection of first ancillary coil, second output resistance one terminates the two or two pole
The negative electrode of pipe, the negative electrode of another termination the 3rd voltage-regulator diode and the power port of the single-chip microcomputer, the 3rd voltage stabilizing
The plus earth of diode, the 3rd filter capacitor is in parallel with the 3rd voltage-regulator diode.
9. a kind of LED lamp, is connected with dimmer switch, it is characterised in that adjusted including the LED described in any one of claim 1 to 8
Optical circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070717.8A CN104661408B (en) | 2015-02-10 | 2015-02-10 | LED light adjusting circuits and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070717.8A CN104661408B (en) | 2015-02-10 | 2015-02-10 | LED light adjusting circuits and LED lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104661408A CN104661408A (en) | 2015-05-27 |
| CN104661408B true CN104661408B (en) | 2017-11-03 |
Family
ID=53251968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510070717.8A Active CN104661408B (en) | 2015-02-10 | 2015-02-10 | LED light adjusting circuits and LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104661408B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070245A (en) * | 2015-07-31 | 2015-11-18 | 苏州合欣美电子科技有限公司 | Static LED display screen driving circuit |
| CN110099476B (en) * | 2018-01-31 | 2024-03-15 | 长沙泰科阳微电子有限公司 | High-integration-level high-PF intelligent dimming circuit structure |
| CN110545606B (en) * | 2019-09-30 | 2024-11-05 | 中山市蓝德电子有限公司 | A power supply method and a power supply circuit using the method |
| CN112055444B (en) * | 2020-09-17 | 2025-07-22 | 深圳市豪恩智能物联股份有限公司 | Dimming driving circuit and lighting device |
| CN112543532B (en) * | 2020-12-15 | 2023-09-26 | 上海晶丰明源半导体股份有限公司 | Dimming control circuit and device thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959346A (en) * | 2009-07-14 | 2011-01-26 | 艾沃特有限公司 | The self adaptation dimmer that is used for the LED lamp detects and control |
| CN102333404A (en) * | 2010-07-12 | 2012-01-25 | 凹凸电子（武汉）有限公司 | Controller and system for dimming light source |
| CN102421226A (en) * | 2011-09-06 | 2012-04-18 | 上海新进半导体制造有限公司 | LED dimming drive circuit |
| CN103024980A (en) * | 2011-09-20 | 2013-04-03 | 日立空调·家用电器株式会社 | A LED lighting device |
| CN103945614A (en) * | 2014-04-25 | 2014-07-23 | 昂宝电子（上海）有限公司 | Illumination system and drive circuit |
| CN103957634A (en) * | 2014-04-25 | 2014-07-30 | 广州昂宝电子有限公司 | Illuminating system and control method thereof |
-
2015
- 2015-02-10 CN CN201510070717.8A patent/CN104661408B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959346A (en) * | 2009-07-14 | 2011-01-26 | 艾沃特有限公司 | The self adaptation dimmer that is used for the LED lamp detects and control |
| CN102333404A (en) * | 2010-07-12 | 2012-01-25 | 凹凸电子（武汉）有限公司 | Controller and system for dimming light source |
| CN102421226A (en) * | 2011-09-06 | 2012-04-18 | 上海新进半导体制造有限公司 | LED dimming drive circuit |
| CN103024980A (en) * | 2011-09-20 | 2013-04-03 | 日立空调·家用电器株式会社 | A LED lighting device |
| CN103945614A (en) * | 2014-04-25 | 2014-07-23 | 昂宝电子（上海）有限公司 | Illumination system and drive circuit |
| CN103957634A (en) * | 2014-04-25 | 2014-07-30 | 广州昂宝电子有限公司 | Illuminating system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104661408A (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103648219B (en) | Light-emitting diode (LED) switch constant-current driving circuit | |
| CN102711307B (en) | Dimmable light-emitting diode (LED) drive circuit and lamp | |
| CN101888730B (en) | Alternating current constant current source LED driving circuit | |
| CN104661408B (en) | LED light adjusting circuits and LED lamp | |
| CN203590555U (en) | Light-adjustable LED lamp | |
| CN107222953B (en) | Numerical model analysis dims constant-current controller integrated circuit | |
| CN102762011B (en) | LED (Light Emitting Diode) constant-current dimming drive circuit device | |
| CN104853476B (en) | LED light adjusting circuits and LED lamp | |
| CN106851927A (en) | A kind of multichannel light modulation toning LED drive circuit of speech recognition | |
| CN105939554A (en) | LED dimming apparatus and LED driving power supply | |
| CN209375983U (en) | A kind of constant pressure that can adapt to output and input variation automatically turns constant-current drive circuit | |
| CN203984733U (en) | A kind of drive circuit of LED lighting device | |
| CN203722869U (en) | LED switch constant-current drive circuit | |
| CN104053282B (en) | A kind of mixed color LED illuminator and drive circuit thereof | |
| CN205491303U (en) | LED drive circuit and LED lamps and lanterns | |
| CN104411072B (en) | Led dimming system | |
| CN207010543U (en) | A kind of low harmony wave is gradually bright to fade off LED dimming drivers | |
| CN206061223U (en) | A kind of input voltage light adjusting circuit | |
| CN203912284U (en) | Color-mixing LED lighting system and driving circuit thereof | |
| CN209402781U (en) | A kind of ultra-thin photovoltaic intelligent dimming power control circuit | |
| CN110312339A (en) | A kind of LED lamp circuit of tunable optical | |
| CN202918561U (en) | LED lamp power supply employing feedback voltage for light modulation | |
| CN204993992U (en) | Intelligence switch light modulation control circuit | |
| CN206332876U (en) | A kind of electric power system | |
| CN202750306U (en) | Reference adjustability-based LED constant-current dimming circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |