CN105357805A - Stepless dimming circuit - Google Patents
Stepless dimming circuit Download PDFInfo
- Publication number
- CN105357805A CN105357805A CN201510876106.2A CN201510876106A CN105357805A CN 105357805 A CN105357805 A CN 105357805A CN 201510876106 A CN201510876106 A CN 201510876106A CN 105357805 A CN105357805 A CN 105357805A
- Authority
- CN
- China
- Prior art keywords
- module
- resistance
- led1
- pin
- light fixture
- 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
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a stepless dimming circuit. The stepless dimming circuit includes a control module and a small-current processing module connected with the control module; the output end of the small-current processing module is connected with the anode of a lamp LED1; the cathode of the lamp LED1 is grounded; the control module sends small-current PWM control signals to the small-current processing module when the current of the lamp LED1 is small current; and the small-current processing module outputs signals according to the small-current PWM control signals so as to control the light intensity of the lamp LED1. When the current of the lamp LED1 is small current, the control module can adjust the duty ratio of the outputted small-current PWM control signals, so that current outputted to the lamp LED1 by the small-current processing module can be adjusted, and therefore, the adjustment of the light intensity of the lamp LED1 can be realized, and the adjustment is more smooth, and a dimming process is more uniform, and at the same time, loss can be reduced, and efficiency can be improved, and more power can be saved, and the service life of the lamp LED1 can be prolonged.
Description
Technical field
The present invention relates to a kind of light adjusting circuit, particularly relate to a kind of non-pole light regulating circuit of LED.
Background technology
Present LED light regulating technology mainly by the resistance size of regulator potentiometer or the frequency of control switch pipe or ON time, realizes the adjustment of LED watt level.But use the loss of potentiometer or these two kinds of control methods of switching tube all can be larger, and control unstable, even easily and cause LED and gear loose contact, efficiency be also lower, and existing LED light regulating technology also exists the uneven problem of dimming process.
And the light fixture of such as Touch table lamp or hotel's desk lamp with dimmer switch controls with high-tension electricity in prior art, and high-tension electricity has certain harm to human body, Given this, need badly a kind of new light regulating technology with solve the loss that exists in prior art large, control instability, loose contact, efficiency is low and Keep Clear-High Voltage property comparatively greatly, the uneven problem of dimming process.
Summary of the invention
In view of this, the object of the embodiment of the present invention is to provide a kind of non-pole light regulating circuit, is intended to the problem that loss is large, dimming process is uneven of the existence solved in existing technology.
The invention provides a kind of non-pole light regulating circuit, for controlling light fixture LED1, the small area analysis processing module comprising control module and be connected with described control module, the output of described small area analysis processing module is connected with the anode of light fixture LED1, the minus earth of described light fixture LED1, wherein control module sends small area analysis pwm control signal to small area analysis processing module when the electric current of described light fixture LED1 is small area analysis, and described small area analysis processing module outputs signal according to described small area analysis pwm control signal with the luminous intensity controlling light fixture LED1.
Wherein, small area analysis processing module comprises switching tube Q4, resistance R1, resistance R2, the control end of described switching tube Q4 is as the input of small area analysis processing module, the control end of described switching tube Q4 is connected with the first end of described resistance R1, the first end of described switching tube Q4 is connected with second end of resistance R1 and is connected supply voltage, second end of described switching tube Q4 is connected with the first end of resistance R2, and second end of described resistance R2 is as the output of described small area analysis processing module.
Wherein, described non-pole light regulating circuit also comprises big current processing module, control module sends big current pwm control signal to big current processing module when the electric current of described light fixture LED1 is big current, described big current processing module outputs signal according to described big current pwm control signal with the luminous intensity controlling light fixture LED1.
Wherein, described big current processing module comprises amplifier module and constant flow module, the first input end of wherein said amplifier module is connected with the sampled voltage of light fixture LED1, second input is connected with the voltage division signal of described big current pwm control signal, the output of described amplifier module is connected with the feedback input end of described constant flow module, and described constant flow module exports corresponding electric current to light fixture LED1 to control the luminous intensity of light fixture LED1 according to the signal of described feedback input end.
Wherein, described amplifier module comprises amplifier chip and resistance R4, and described constant flow module comprises constant current chip and inductance L 1, and described non-pole light regulating circuit comprises resistance R3, resistance R5, resistance R6 and electric capacity C6; Between the negative electrode that described resistance R3 is connected to described light fixture LED1 and ground, the negative electrode of described light fixture LED1 is connected to the first input end of described amplifier module; The first end of described resistance R6 is connected with described big current pwm control signal, second end of described resistance R6 is connected with the first end of resistance R5, the second end ground connection of described resistance R5, is connected with electric capacity C6 between the first end of described resistance R6 and second end of described resistance R5; Second end of described resistance R6 is connected with the second input of described amplifier module; The pin IN+ of described amplifier chip is as the first input end of described amplifier module, the pin IN-of described amplifier chip is as the second input of described amplifier module, the pin OUTPUT of described amplifier chip is as the output of described amplifier module, the pin V-ground connection of described amplifier chip, the pin V+ of described amplifier chip is connected with the enable control end of described control module, and the pin V+ of described amplifier chip is connected with pin OUTPUT through resistance R4; The pin FB of described constant current chip is as feedback input end, the pin EN of described constant current chip is connected with the enable control end of described control module, and the output that pin 1SW with 2SW of described constant current chip is connected as described constant current chip is connected through the anode of described inductance L 1 with described light fixture LED.
Wherein, described non-pole light regulating circuit also comprises electric capacity C5 and electric capacity C7, and one end of described electric capacity C5 is connected with the pin OUTPUT of described amplifier chip, and the other end is connected with the pin IN-of described amplifier chip; One end of described electric capacity C7 is connected with the anode of described light fixture LED1, other end ground connection.
Wherein, the model of described amplifier chip is LM321, and the model of described constant current chip is TPS62090.
Wherein, described control module is single-chip microcomputer, and its model is PIC16F1509.
Wherein, described small area analysis is the electric current being less than 100mA.
Wherein, described big current is the electric current in 100mA to 3A scope.
In embodiments of the present invention, be that small area analysis passes through to adopt control module and small area analysis processing module at the electric current of light fixture LED1, control module exports the electric current of light fixture LED1 to by the duty ratio and adjustable small area analysis processing module controlling the small area analysis pwm control signal exported, thus realize the adjustment of light fixture LED1 luminous intensity, and adjustment is more level and smooth, make dimming process evenly, reduce loss simultaneously and improve efficiency, also power saving more, extends the useful life of light fixture LED1.
Accompanying drawing explanation
Fig. 1 is the theory diagram of a kind of small area analysis non-pole light regulating circuit provided by the invention;
Fig. 2 is the theory diagram of a kind of big current non-pole light regulating circuit provided by the invention;
Fig. 3 is another theory diagram of a kind of big current non-pole light regulating circuit provided by the invention;
Fig. 4 is the concrete map of current of one of a kind of non-pole light regulating circuit provided by the invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The specific embodiment of the invention provides non-pole light regulating circuit, for controlling light fixture LED1, as shown in Figure 1, the small area analysis processing module 12 that described non-pole light regulating circuit comprises control module 11 and is connected with described control module 11, the output of described small area analysis processing module is connected with the anode of light fixture LED1, the minus earth of described light fixture LED1, wherein control module 11 sends small area analysis pwm control signal to small area analysis processing module 12 when the electric current of described light fixture LED1 is small area analysis, described small area analysis processing module 12 outputs signal according to described small area analysis pwm control signal with the luminous intensity controlling light fixture LED1.
The present invention is that small area analysis passes through to adopt control module 11 and small area analysis processing module 12 at the electric current of described light fixture LED1, control module 11 exports the electric current of light fixture LED1 to by the duty ratio and adjustable small area analysis processing module controlling the small area analysis pwm control signal exported, thus realizes the adjustment of light fixture LED1 luminous intensity.Due to the present invention's adjustment is the duty ratio of small area analysis pwm control signal, and relative to existing technologies, its adjustment is more level and smooth, make dimming process evenly, reduce loss simultaneously and improve efficiency; Secondly, the present invention is the luminous intensity adopting low-voltage to control light fixture LED1, and also power saving more, extends the useful life of light fixture LED1.
Preferably, when the electric current of aforementioned described light fixture LED1 is small area analysis, described electric current is less than 100mA.
See Fig. 4, the invention provides a kind of specific embodiment of small area analysis processing module 12, it comprises switching tube Q4, resistance R1, resistance R2, the control end of described switching tube Q4 is as the input input small area analysis pwm control signal MLED_L_PWM of small area analysis processing module 12, the control end of described switching tube Q4 is connected with the first end of described resistance R1, the first end of described switching tube Q4 is connected with second end of resistance R1 and is connected supply voltage, second end of described switching tube Q4 is connected with the first end of resistance R2, second end of described resistance R2 is connected with the anode of light fixture LED1 as the output of described small area analysis processing module 12.
Described switching tube Q4 can be P channel MOS tube, and the source electrode of described metal-oxide-semiconductor is as the first end of described switching tube Q4, and drain as second end of described switching tube Q4, grid is as the control end of described switching tube Q4.
When described small area analysis pwm control signal MLED_L_PWM is low level, described switching tube Q4 conducting, when described small area analysis pwm control signal MLED_L_PWM is high level, described switching tube Q4 turns off, and the conducting size of switching tube Q4 can be made to change regulate light fixture LED1 luminous intensity by regulating the output voltage size of small area analysis pwm control signal MLED_L_PWM.
Increase to make the Current adjustment scope of non-pole light regulating circuit, non-pole light regulating circuit of the present invention also comprises big current processing module 13, control module 11 sends big current pwm control signal MLED_B_PWM to big current processing module 13 when the electric current of described light fixture LED1 is big current, described big current processing module 13 outputs signal according to described big current pwm control signal MLED_B_PWM with the luminous intensity controlling light fixture LED1.
When the electric current of light fixture LED1 is larger, above-mentioned non-pole light regulating circuit cannot realize big current and regulate, and increases above-mentioned big current processing module 13 and can solve the problem.Such as, when the electric current of light fixture LED1 is larger, regulated by above-mentioned big current processing module 13, when the electric current of light fixture LED1 is decreased to it gradually for being continued to regulate by small area analysis processing module 12 during small area analysis.
Preferably, when the electric current of aforementioned described light fixture LED1 is big current, described electric current is in 100mA to 3A scope.Understandably, the scope of aforesaid small area analysis and big current herein can divide according to actual needs, as increased or reduction etc. by 100mA.
Particularly, described big current processing module 13 comprises amplifier module 131 and constant flow module 132, the first input end of wherein said amplifier module 131 is connected with the sampled voltage of light fixture LED1, second input is connected with the voltage division signal of described big current pwm control signal MLED_B_PWM, the output of described amplifier module 131 is connected with the feedback input end of described constant flow module 132, the Enable Pin of described amplifier module 131 is connected with the enable control end of control module 11, the Enable Pin of described constant flow module 132 is connected with the enable control end of described control module 11, and export corresponding electric current to light fixture LED1 to control the luminous intensity of light fixture LED1 according to the signal of described feedback input end.
See Fig. 4, the invention provides a kind of specific implementation circuit of big current processing module 13 circuit, described amplifier module 131 comprises amplifier chip IC 2 and resistance R4, described constant flow module 132 comprises constant current chip IC1 and inductance L 1, and described non-pole light regulating circuit also comprises resistance R3, resistance R5, resistance R6 and electric capacity C6.
Wherein, between the negative electrode that resistance R3 is connected to described light fixture LED1 and ground, the negative electrode of described light fixture LED1 is connected to the first input end of described amplifier module 131.Because resistance R3 connects with light fixture LED1, can by detecting the voltage at resistance R3 two ends to obtain the electric current of light fixture LED1, the signal that resistance R3 is sent to the first input end of described amplifier module 131 is the sampled voltage of aforementioned light fixture LED1, its electric current flowing through light fixture LED1 through resistance R3 to form loop.
Wherein, the first end of resistance R6 is connected with described big current pwm control signal MLED_B_PWM, second end of described resistance R6 is connected with the first end of resistance R5, the second end ground connection of described resistance R5, is connected with electric capacity C6 between the first end of described resistance R6 and second end of described resistance R5; Second end of described resistance R6 is connected with the second input of described amplifier module 131.Resistance R5 and resistance R6 forms bleeder circuit, described big current pwm control signal MLED_B_PWM is carried out dividing potential drop, and exports second input of voltage division signal to amplifier module 131.
Wherein, the pin IN+ of amplifier chip IC 2 is as the first input end of described amplifier module 131, the pin IN-of described amplifier chip IC 2 is as the second input of described amplifier module 131, the pin OUTPUT of described amplifier chip IC 2 is as the output of described amplifier module 131, the pin V+ of described amplifier chip is as the Enable Pin of described amplifier module 131, the pin V-ground connection of described amplifier chip IC 2, the pin V+ of described amplifier chip IC 2 is connected with pin OUTPUT through resistance R4.When the enable control end of control module 11 exports high level, amplifier chip IC 2 is started working, and it, according to the voltage difference of its first input end and the second input, exports corresponding voltage by output.
Wherein, the pin FB of described constant current chip IC1 is as feedback input end, the pin EN of described constant current chip IC1 is connected with the enable control end of described control module 11 as the Enable Pin of described constant flow module, and the output that pin 1SW with 2SW of described constant current chip is connected as described constant current chip is connected through the anode of described inductance L 1 with described light fixture LED.When the enable control end of control module 11 exports high level, constant current chip IC1 starts working, and it is according to the size of pin FB voltage, exports corresponding constant current and after inductance L 1 filtering, is sent to light fixture LED1 to control the luminous intensity of light fixture LED1.
Particularly, when the electric current of described light fixture LED1 is big current, the enable control end of control module 11 exports high level, amplifier chip IC 2 and constant current chip IC1 can normally be worked, wherein represent that the sampled voltage of light fixture LED1 electric current inputs to the pin IN+ of amplifier chip IC 2, voltage division signal is inputed to the pin IN-of sheet IC2 by big current pwm control signal MLED_B_PWM after resistance R5 and resistance R6 dividing potential drop, amplifier chip IC 2 outputs signal to the pin FB of constant current chip IC1 according to the difference of pin IN+ and pin IN-input voltage, its output 1SW exports corresponding electric current to light fixture LED1 to regulate the luminous intensity of light fixture LED1 according to the input signal of pin FB, pin IN+ and pin IN-difference can be made to reduce gradually by the duty ratio of adjustment big current pwm control signal MLED_B_PWM, until the electric current stating light fixture LED1 becomes small area analysis, the enable control end output low level of control module 11, amplifier chip IC 2 and constant current chip IC1 can be quit work, aforementioned small area analysis processing module is adopted to continue the luminous intensity of adjustment light fixture LED1 again.
Preferably, in order to make the switching of big current and small area analysis brightness adjustment control level and smooth, non-pole light regulating circuit of the present invention also comprises electric capacity C5 and electric capacity C7, and wherein one end of electric capacity C5 is connected with the pin OUTPUT of described amplifier chip IC 2, and the other end is connected with the pin IN-of described amplifier chip IC 2; One end of electric capacity C7 is connected with the anode of described light fixture LED1, other end ground connection.When big current controls to compensate level and smooth output through C5, C7 when switching with Small current control, make the maximum of the minimum value of big current and small area analysis be same numerical value, non-pole light regulating can switch very stably without dodging frequently.
Preferably, control module 11 of the present invention can be single-chip microcomputer or potentiometer.
Study according to inventor, the model of amplifier chip IC 2 is preferably LM321, the model of described constant current chip is preferably TPS62090, the model of described single-chip microcomputer is preferably PIC16F1509, when adopting above-mentioned signal chip, its area taken is minimum, the area of pcb board also can be minimum, thus make corresponding device volume minimum.
When above-mentioned control module 11 is potentiometer, need two potentiometers, amplifier chip IC 2 is connected with supply voltage with the Enable Pin of constant current chip IC1 is all direct, first potentiometer controls the voltage swing of small area analysis pwm control signal MLED_L_PWM, and the second potentiometer controls the voltage swing of big current pwm control signal MLED_B_PWM.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a non-pole light regulating circuit, for controlling light fixture LED1, it is characterized in that, the small area analysis processing module comprising control module and be connected with described control module, the output of described small area analysis processing module is connected with the anode of light fixture LED1, the minus earth of described light fixture LED1, wherein control module sends small area analysis pwm control signal to small area analysis processing module when the electric current of described light fixture LED1 is small area analysis, and described small area analysis processing module outputs signal according to described small area analysis pwm control signal with the luminous intensity controlling light fixture LED1.
2. non-pole light regulating circuit according to claim 1, it is characterized in that, described small area analysis processing module comprises switching tube Q4, resistance R1, resistance R2, the control end of described switching tube Q4 is as the input of small area analysis processing module, the control end of described switching tube Q4 is connected with the first end of described resistance R1, the first end of described switching tube Q4 is connected with second end of resistance R1 and is connected supply voltage, second end of described switching tube Q4 is connected with the first end of resistance R2, and second end of described resistance R2 is as the output of described small area analysis processing module.
3. non-pole light regulating circuit according to claim 1 and 2, it is characterized in that, described non-pole light regulating circuit also comprises big current processing module, control module sends big current pwm control signal to big current processing module when the electric current of described light fixture LED1 is big current, described big current processing module outputs signal according to described big current pwm control signal with the luminous intensity controlling light fixture LED1.
4. non-pole light regulating circuit according to claim 3, it is characterized in that, described big current processing module comprises amplifier module and constant flow module, the first input end of wherein said amplifier module is connected with the sampled voltage of light fixture LED1, second input is connected with the voltage division signal of described big current pwm control signal, the output of described amplifier module is connected with the feedback input end of described constant flow module, the Enable Pin of described amplifier module is connected with the enable control end of control module, the Enable Pin of described constant flow module is connected with the enable control end of described control module, and export corresponding electric current to light fixture LED1 to control the luminous intensity of light fixture LED1 according to the signal of described feedback input end.
5. non-pole light regulating circuit according to claim 4, it is characterized in that, described amplifier module comprises amplifier chip and resistance R4, and described constant flow module comprises constant current chip and inductance L 1, and described non-pole light regulating circuit comprises resistance R3, resistance R5, resistance R6 and electric capacity C6;
Between the negative electrode that described resistance R3 is connected to described light fixture LED1 and ground, the negative electrode of described light fixture LED1 is connected to the first input end of described amplifier module;
The first end of described resistance R6 is connected with described big current pwm control signal, second end of described resistance R6 is connected with the first end of resistance R5, the second end ground connection of described resistance R5, is connected with electric capacity C6 between the first end of described resistance R6 and second end of described resistance R5; Second end of described resistance R6 is connected with the second input of described amplifier module;
The pin IN+ of described amplifier chip is as the first input end of described amplifier module, the pin IN-of described amplifier chip is as the second input of described amplifier module, the pin OUTPUT of described amplifier chip is as the output of described amplifier module, the pin V+ of described amplifier chip is as the Enable Pin of described amplifier module, the pin V-ground connection of described amplifier chip, the pin V+ of described amplifier chip is connected with pin OUTPUT through resistance R4;
The pin FB of described constant current chip is as feedback input end, the pin EN of described constant current chip is as the Enable Pin of described constant flow module, and the output that pin 1SW with 2SW of described constant current chip is connected as described constant current chip is connected through the anode of described inductance L 1 with described light fixture LED.
6. non-pole light regulating circuit according to claim 5, it is characterized in that, described non-pole light regulating circuit also comprises electric capacity C5 and electric capacity C7, and one end of described electric capacity C5 is connected with the pin OUTPUT of described amplifier chip, and the other end is connected with the pin IN-of described amplifier chip; One end of described electric capacity C7 is connected with the anode of described light fixture LED1, other end ground connection.
7. the non-pole light regulating circuit according to claim 5 or 6, is characterized in that, the model of described amplifier chip is LM321, and the model of described constant current chip is TPS62090.
8. the non-pole light regulating circuit according to claim 1 or 7, is characterized in that, described control module is single-chip microcomputer, and its model is PIC16F1509.
9. the non-pole light regulating circuit according to any one of claim 4 to 6, it is characterized in that, described control module comprises the first potentiometer and the second potentiometer, first potentiometer controls the voltage swing of small area analysis pwm control signal, second potentiometer controls the voltage swing of big current pwm control signal, and amplifier module is all connected with supply voltage with the Enable Pin of constant flow module.
10. non-pole light regulating circuit according to claim 3, described small area analysis is the electric current being less than 100mA, and described big current is the electric current in 100mA to 3A scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510876106.2A CN105357805B (en) | 2015-12-02 | 2015-12-02 | A kind of non-pole light regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510876106.2A CN105357805B (en) | 2015-12-02 | 2015-12-02 | A kind of non-pole light regulating circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105357805A true CN105357805A (en) | 2016-02-24 |
| CN105357805B CN105357805B (en) | 2017-11-21 |
Family
ID=55333624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510876106.2A Active CN105357805B (en) | 2015-12-02 | 2015-12-02 | A kind of non-pole light regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105357805B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249244A (en) * | 2017-07-28 | 2017-10-13 | 杭州聪普智能科技有限公司 | A kind of method for making Lighting Control Assembly realize displaying control |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007194183A (en) * | 2006-01-20 | 2007-08-02 | Force To Force:Kk | Dimmer of electrodeless inductive discharge lamp |
| CN201657400U (en) * | 2009-11-26 | 2010-11-24 | 惠州大景照明控制有限公司 | LED dimming controller |
| CN101977475A (en) * | 2010-11-17 | 2011-02-16 | 湘潭大学 | LED constant current control device in PWM dimming mode |
| CN102484918A (en) * | 2009-08-26 | 2012-05-30 | 皇家飞利浦电子股份有限公司 | Method and apparatus for controlling dimming levels of leds |
| CN102695319A (en) * | 2011-03-23 | 2012-09-26 | 海洋王照明科技股份有限公司 | LED stepless light regulating circuit |
| CN103068090A (en) * | 2011-10-18 | 2013-04-24 | 重庆瑞升康博电气有限公司 | LED light-source digital electrodeless dimmer of optical microscope |
| TW201444401A (en) * | 2013-05-03 | 2014-11-16 | Lextar Electronics Corp | Illumination device and the LED dimming circuit thereof |
| CN205213075U (en) * | 2015-12-02 | 2016-05-04 | 深圳市中孚能电气设备有限公司 | Electrodeless dimmer circuit |
-
2015
- 2015-12-02 CN CN201510876106.2A patent/CN105357805B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007194183A (en) * | 2006-01-20 | 2007-08-02 | Force To Force:Kk | Dimmer of electrodeless inductive discharge lamp |
| CN102484918A (en) * | 2009-08-26 | 2012-05-30 | 皇家飞利浦电子股份有限公司 | Method and apparatus for controlling dimming levels of leds |
| CN201657400U (en) * | 2009-11-26 | 2010-11-24 | 惠州大景照明控制有限公司 | LED dimming controller |
| CN101977475A (en) * | 2010-11-17 | 2011-02-16 | 湘潭大学 | LED constant current control device in PWM dimming mode |
| CN102695319A (en) * | 2011-03-23 | 2012-09-26 | 海洋王照明科技股份有限公司 | LED stepless light regulating circuit |
| CN103068090A (en) * | 2011-10-18 | 2013-04-24 | 重庆瑞升康博电气有限公司 | LED light-source digital electrodeless dimmer of optical microscope |
| TW201444401A (en) * | 2013-05-03 | 2014-11-16 | Lextar Electronics Corp | Illumination device and the LED dimming circuit thereof |
| CN205213075U (en) * | 2015-12-02 | 2016-05-04 | 深圳市中孚能电气设备有限公司 | Electrodeless dimmer circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249244A (en) * | 2017-07-28 | 2017-10-13 | 杭州聪普智能科技有限公司 | A kind of method for making Lighting Control Assembly realize displaying control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105357805B (en) | 2017-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8803436B2 (en) | Dimmable screw-in compact fluorescent lamp having integral electronic ballast circuit | |
| CN102196634B (en) | Led lighting device | |
| EP1965611A1 (en) | Stepless dimming fluorescent lamp and ballast thereof | |
| CN105338690A (en) | LED dimming power source | |
| CN110572897A (en) | High-power-factor stroboflash-free LED dimming circuit, device and dimming method | |
| CN105025642A (en) | LED adaptive dimming classroom lamp and control method thereof | |
| CN108322959B (en) | Dimming system of LED lamp | |
| CN104780694A (en) | LED touch dimming constant current drive power source | |
| CN105636308A (en) | Wireless remote-control LED dimming light source | |
| CN205213075U (en) | Electrodeless dimmer circuit | |
| CN103152939A (en) | Four-in-one light-dimming circuit of light-emitting diode (LED) power source | |
| CN208623945U (en) | A kind of multiple-channel output dimming power source meeting U.S. rule CLASS2 | |
| CN105357805A (en) | Stepless dimming circuit | |
| CN204616156U (en) | A kind of LED drive circuit being applicable to controllable silicon light modulation | |
| CN109309985A (en) | Lighting system | |
| CN204069410U (en) | Two-wire system light adjusting circuit | |
| CN207011042U (en) | A kind of controllable silicon light modulation automatic color regulating temperature power supply | |
| CN204046881U (en) | A kind of LED dimming power source | |
| CN208317050U (en) | A kind of light adjusting system of LED lamp | |
| CN207911069U (en) | Constant current output high pressure dimming driver | |
| CN203435195U (en) | MR16 silicon-controlled dimming power source adapting to all electronic transformers | |
| CN103281843A (en) | Current controllable type LED circuit | |
| CN208113025U (en) | It is a kind of to follow dimming device for tunable optical lamps and lanterns | |
| CN201844286U (en) | Desk lamp with automatic brightness control function | |
| CN206118116U (en) | Light -emitting diode (LED) driving circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |