CN107809821B - A kind of pressure-controlled dimming driving circuit - Google Patents
A kind of pressure-controlled dimming driving circuit Download PDFInfo
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- CN107809821B CN107809821B CN201710991487.8A CN201710991487A CN107809821B CN 107809821 B CN107809821 B CN 107809821B CN 201710991487 A CN201710991487 A CN 201710991487A CN 107809821 B CN107809821 B CN 107809821B
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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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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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]
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- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The invention discloses a kind of pressure-controlled dimming driving circuits, including the different LED light group of at least two colour temperatures, formula switch module is controlled with the first voltage control formula switch module of the first LED light group cooperation and with the second voltage of the second LED light group cooperation, first LED light group, second LED light group is sequentially connected in series and the anode of the first LED light group is electrically connected with external voltage controller power source module, it includes the first control terminal that first voltage, which controls formula switch module, first input end and the first output end, it includes the second control terminal that the second voltage, which controls formula switch module, second input terminal and second output terminal, voltage controller power source module controls first voltage control formula switch module respectively, the on-off of second voltage control formula switch module, the cathode and first input end of first LED light group are electrically connected, 2nd LED The cathode of lamp group and the second input terminal are electrically connected, and the first output end and second output terminal are grounded, and the design controls LED light group light modulation, toning using voltage controller power source module output voltage, and circuit structure is simple, and cost is relatively low.
Description
Technical field
The present invention relates to the dimming driving circuits of lighting area, especially LED.
Background technique
Traditional LED dimming driving circuit is relatively simple, such as can only individually control two not by controlling chip
The adjusting to colour temperature is realized with the flicker frequency of colour temperature LED light group, while supplying different size of current regulation brightness, tradition
Dimming driving circuit need setting control chip and corresponding driving circuit controls the flicker frequency of LED light group
System, higher cost, circuit structure is complicated, adjusts trouble.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide the LED of adjustable brightness, colour temperature to dim driving electricity
Road.
The technical solution adopted by the present invention is that:
A kind of pressure-controlled dimming driving circuit, comprising:
The different LED light group of at least two colour temperatures, wherein at least include the first LED light group and the second LED light group, first
LED light group, the second LED light group are sequentially connected in series and the anode of the first LED light group is electrically connected with external voltage controller power source module,
It is that the first LED light group and the second LED light group are powered that the voltage controller power source module, which exports direct current,；
Second with the first voltage control formula switch module of the first LED light group cooperation and with the cooperation of the second LED light group
Voltage type switch module, it includes the first control terminal, first input end and first which, which controls formula switch module,
Output end, it includes the second control terminal, the second input terminal and second output terminal which, which controls formula switch module,；
Voltage controller power source module is electrically connected with the first control terminal, the second control terminal according to the defeated of voltage controller power source module respectively
Signal controls the on-off of first voltage control formula switch module, second voltage control formula switch module, the first LED light group respectively out
Cathode and first input end be electrically connected, the cathode of the second LED light group and the second input terminal are electrically connected, the first output end and
Second output terminal ground connection.
It further include the first filter module, which electrically connects with voltage controller power source module, the first control terminal respectively
It connects.
It further include the second filter module, which electrically connects with voltage controller power source module, the second control terminal respectively
It connects.
First voltage control formula switch module includes metal-oxide-semiconductor Q1, resistance R1, the first galvanostat and for cooperating the
First the reference module of one galvanostat setting cutoff value；
One end of resistance R1 is electrically connected with the anode of the first LED light group, the second control terminal respectively；
The other end of resistance R1 is electrically connected with one end of the grid of metal-oxide-semiconductor Q1, resistance R2 respectively；
The input terminal of first galvanostat and the cathode of the first LED light group are electrically connected；
One end of the output end of first galvanostat and the first the reference module is electrically connected；
The drain electrode of metal-oxide-semiconductor Q1 is electrically connected with the other end of the first the reference module；
The source electrode of metal-oxide-semiconductor Q1 is grounded.
Second voltage control formula switch module includes metal-oxide-semiconductor Q2, resistance R7, the second galvanostat and for cooperating the
Second the reference module of two galvanostats setting cutoff value；
One end of resistance R7 is electrically connected with one end of the anode of the first LED light group, resistance R1 respectively；
The other end of resistance R7 is electrically connected with the grid of metal-oxide-semiconductor Q2 respectively；
The input terminal of second galvanostat and the cathode of the second LED light group are electrically connected；
One end of the output end of second galvanostat and the second the reference module is electrically connected；
The drain electrode of metal-oxide-semiconductor Q2 is electrically connected with the other end of the second the reference module；
One end of the source electrode of metal-oxide-semiconductor Q2 and the first the reference module is electrically connected.
It further include fictitious load module, the anode of fictitious load module is electrically connected with the anode of the first LED light group, fictitious load mould
The cathode of block is grounded.
The fictitious load module includes third galvanostat and the third ginseng for cooperating third galvanostat setting cutoff value
Module is examined, the anode of the input terminal of the third galvanostat and the first LED light group is electrically connected, the output end difference of third galvanostat
It is electrically connected with one end of third the reference module, the source electrode of metal-oxide-semiconductor Q1, the other end ground connection of the third the reference module.
First LED light group is made of the LED luminescence chip of at least one identical colour temperature or by least two difference
The LED luminescence chip of colour temperature is connected in series.
Second LED light group is made of the LED luminescence chip of at least one identical colour temperature or by least two difference
The LED luminescence chip of colour temperature is connected in series.
Beneficial effects of the present invention:
Dimming driving circuit of the present invention, voltage controller power source module output voltage is LED light group power supply, and user can pass through
Voltage controller power source module adjusts the size of voltage, and voltage gradually rises adjusting by low level, and it is electric that first voltage controls formula switch module
Triggering and conducting is pressed, the first LED light group is lighted, shows the illumination effect of the first LED light group colour temperature, and continue to increase in voltage
During, the electric current for flowing through the first LED light group can be also gradually increased, and play the adjusting to brightness, be increased to centainly to voltage
When degree, second voltage control formula switch module also can be correspondingly connected by voltage triggered, light the second LED light group, and at this time the
One LED light group shines jointly with the second LED light group, and the illumination effect presented is the first LED light group colour temperature, the second LED light
The combination of group colour temperature, the first LED light group and the second LED light group are series connection, continue to lift up voltage, so that it may to flowing through first
LED light group, the second LED light group electric current be adjusted, and then adjust the first LED light group, the second LED light group brightness, originally set
Meter, which is realized using the size of voltage controller power source module output voltage, controls LED light group light modulation, toning, and circuit structure letter
Single, cost is relatively low.
The voltage type switch module of the design uses metal-oxide-semiconductor, metal-oxide-semiconductor and this kind of current control formula switch portion of triode
Part is compared, and in the on-state, conducting resistance is small, and gate driving does not need electric current, and small, the circuit of driving metal-oxide-semiconductor conducting is lost
Also simpler.
Meanwhile it being provided with the first galvanostat in first voltage control formula switch module, second voltage controls formula switch module
In be also equipped with the second galvanostat, the first galvanostat, the second galvanostat are defined electric current, when electric current is excessive, galvanostat
Detect that the end voltage of the reference module is excessive, galvanostat will end, and prevent from burning out LED light group, protect to LED light group.
Detailed description of the invention
A specific embodiment of the invention is described further with reference to the accompanying drawing.
Fig. 1 is the circuit diagram of dimming driving circuit of the present invention.
Specific embodiment
As shown in Figure 1, dimming driving circuit of the present invention, including the different LED light group of at least two colour temperatures, wherein the design
It is preferred that LED light group has two groups, respectively the first LED light group 1 and the second LED light group 2, the design further include and the first LED light group 1
The first voltage control formula switch module 3 of cooperation and the second voltage cooperated with the second LED light group 2 control formula switch module 4,
The different LED light group of colour temperature can be two groups, be also possible to three groups, four groups or more herein, correspondingly, the number of switch module
Amount with LED light group match, while first LED light group 1 be made of the LED luminescence chip of at least one identical colour temperature or by
The LED luminescence chip of at least two different-colours is connected in series, second LED light group 2 by least one identical colour temperature LED
Luminescence chip is formed or is connected in series by the LED luminescence chip of at least two different-colours, in the preferred embodiment of the design
In, the first LED light group 1 is connected in series by the LED luminous component that several colour temperatures are 2000K, and the second LED light group 2 is by several
Colour temperature is respectively that the LED luminous component of 2700K and 3500K is connected in series, and is not defined herein to specific color temperature value.
First LED light group 1, the second LED light group 2 are sequentially connected in series and the anode of the first LED light group 1 and external pressure regulation are electric
Source module 5 is electrically connected, and it is that the first LED light group 1 and the second LED light group 2 are powered which, which exports direct current, and first
Voltage type switch module 3 includes the first control terminal, first input end and the first output end, and second voltage control formula is opened
Close module 4 include the second control terminal, the second input terminal and second output terminal, voltage controller power source module 5 respectively with the first control terminal,
Second control terminal is electrically connected to control first voltage control formula switch module 3, second voltage control formula switch module 4 respectively
On-off, the cathode and first input end of the first LED light group 1 are electrically connected, the cathode of the second LED light group 2 and the second input terminal electricity
Property connection, the first output end and second output terminal are grounded.
What voltage controller power source module 5 herein can be connect by controllable dimming device 51 and with controllable dimming device 51 adjustable presses off
Powered-down source 52 is constituted, and the input terminal of pressure-adjustable Switching Power Supply 52 is connect with the pole L, N of exchange respectively, and output end connects LED light group
And first voltage control formula switch module 3, second voltage control formula switch module 4 export the running of DC powered LED light group,
User can adjust the output voltage of pressure-adjustable Switching Power Supply 52 by controllable dimming device.
5 output voltage of voltage controller power source module is LED light group power supply, and user can be adjusted by voltage controller power source module 5
The size of voltage, voltage gradually rise adjusting by low level, and first voltage control formula switch module 3 is triggered conducting, light first
LED light group 1 shows the illumination effect of 1 colour temperature of the first LED light group, and during voltage continues raised, flows through first
The electric current of LED light group 1 can be also gradually increased, and play the adjusting to brightness, when voltage increases to a certain extent, second voltage control
Standard switch module 4 also can correspondingly be triggered conducting, light the second LED light group 2, at this time the first LED light group 1 and the 2nd LED
Lamp group 2 shines jointly, and the illumination effect presented is the combination of 1 colour temperature of the first LED light group, 2 colour temperature of the second LED light group, the
One LED light group 1 and the second LED light group 2 are series connection, continue to lift up voltage, so that it may be adjusted, and then adjust to electric current
The brightness of first LED light group 1, the second LED light group 2, the design are realized with the size of 5 output voltage of voltage controller power source module and are controlled
LED light group processed dims, mixes colours, and circuit structure is simple, and cost is relatively low.
The voltage type switch module of the design uses metal-oxide-semiconductor, metal-oxide-semiconductor and this kind of current control formula switch portion of triode
Part is compared, and in the on-state, conducting resistance is small, and gate driving does not need electric current, and small, the circuit of driving metal-oxide-semiconductor conducting is lost
Also simpler.
Meanwhile the design further includes the first filter module 61, the second filter module 62, first filter module 61 respectively with
Voltage controller power source module 5, the first control terminal are electrically connected, which controls with voltage controller power source module 5, second respectively
End is electrically connected, and the first filter module 61 and the second filter module 62 can to trigger first voltage control formula switch module
3, the signal of second voltage control formula switch module 4 is smoothened, reduces interference, and the first filter module 61, second filters herein
Module 62 can use capacitance-resistance filter, and more the quantity of capacitance-resistance is interfered preferably to remove concussion according to actual needs.
It includes metal-oxide-semiconductor Q1, resistance R1, the first galvanostat 71 and for cooperating that first voltage, which controls formula switch module 3,
First the reference module 72 of one galvanostat 71 setting cutoff value；
One end of resistance R1 is electrically connected with the anode of the first LED light group 1, the second control terminal respectively；
The other end of resistance R1 is electrically connected with one end of the grid of metal-oxide-semiconductor Q1, resistance R2 respectively；
The input terminal of first galvanostat 71 and the cathode of the first LED light group 1 are electrically connected；
One end of the output end of first galvanostat 71 and the first the reference module 72 is electrically connected；
The drain electrode of metal-oxide-semiconductor Q1 is electrically connected with the other end of the first the reference module 72；
The source electrode of metal-oxide-semiconductor Q1 is grounded.
It includes metal-oxide-semiconductor Q2, resistance R7, the second galvanostat 81 and for cooperating that second voltage, which controls formula switch module 4,
Second the reference module 82 of two galvanostats 81 setting cutoff value；
One end of resistance R7 is electrically connected with one end of the anode of the first LED light group 1, resistance R1 respectively；
The other end of resistance R7 is electrically connected with the grid of metal-oxide-semiconductor Q2 respectively；
The input terminal of second galvanostat 81 and the cathode of the second LED light group 2 are electrically connected；
One end of the output end of second galvanostat 81 and the second the reference module 82 is electrically connected；
The drain electrode of metal-oxide-semiconductor Q2 is electrically connected with the other end of the second the reference module 82；
One end of the source electrode of metal-oxide-semiconductor Q2 and the first the reference module 82 is electrically connected.
Metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 are N-channel type metal-oxide-semiconductor herein, the first the reference module 72, the second the reference module 82 by
Resistor assembly is constituted, current flowing resistance component, the end voltage of galvanostat detection resistance component, is realized and is cut when being more than threshold value
Only.
This dimming driving circuit user can adjust the output voltage of pressure-adjustable Switching Power Supply 52, factory by controllable dimming device 51
Family is not enough to touch come the conduction threshold of configuration switch module by the resistance value of setting resistance R1, resistance R7 when voltage is in low level
It sends out second voltage and controls formula switch module 4, first voltage control formula switch module 3 can only be triggered and be connected, at this time only the first LED
Lamp group 1 is lighted, when voltage gradually rises, when second voltage control formula switch module 4 is also switched on, then and the first LED light group 1, second
LED light group 2 is lighted, and since the second LED light group 2 is different from the colour temperature of the first LED light group 1, then can be changed initially by the first LED
The luminous colour temperature of lamp group 1.
Meanwhile it being provided with the first galvanostat 71 in first voltage control formula switch module 3, second voltage controls formula switching molding
The second galvanostat 81 is also equipped in block 4, the first galvanostat 71, the second galvanostat 81 are defined electric current, when electric current mistake
Greatly, galvanostat detects that the end voltage of the reference module is excessive, and galvanostat will end, and prevent from burning out LED light group, to LED light group
It is protected, while when this is in voltage and gradually rises, first voltage controls formula switch module 3, second voltage control formula switch
Module 4 is adjusted according to triggering and is successively opened, the also corresponding conducting of the first galvanostat 71, the second galvanostat 81, the first LED light group 3, the
Two LED light groups 4 are parallel connection, if voltage continues to raise, electric current is increased to certain value, since the source electrode of metal-oxide-semiconductor Q2 is
It is connected to one end of the first the reference module 72, the end voltage of the first the reference module 72 increases, the cut-off of the first galvanostat 71, then and first
LED light group 1, the second LED light group 2 will be in series connection, prevent the electric current for flowing through LED light group excessive and damage LED light group.
In addition, the design further includes fictitious load module 9, the anode and the anode electricity of the first LED light group 1 of fictitious load module 9
Property connection, the cathode ground connection of fictitious load module 9, the fictitious load module 9 of the design includes third galvanostat 91 and for cooperating
The third the reference module 92 of the setting cutoff value of third galvanostat 91, the input terminal of the third galvanostat 91 and the first LED light group 1
Anode is electrically connected, and the output end of third galvanostat 91 is electrical with the source electrode of one end of third the reference module 92, metal-oxide-semiconductor Q1 respectively
Connection, the other end ground connection of the third the reference module 92, third the reference module 92 can be equally made of resistor assembly.
Voltage is adjusted in initial stage, user, and voltage gradually rises, and pressure-adjustable Switching Power Supply 52 is the first LED light
Group the 1, second LED light group 2 power supply, fictitious load module 9 and the first LED light group 1, the second LED light group 2 are parallel relationship, are played point
Stream effect, so that first LED light group 1 can be operated steadily when voltage is lower, protects the first LED light group 1, meanwhile,
The source electrode of metal-oxide-semiconductor Q1, second voltage control the source electrode of metal-oxide-semiconductor Q2 in formula switch module 4 in first voltage control formula switch module 3
The electric current of outflow finally needs to flow to one end of third the reference module 92, and is grounded again after third the reference module 92, when
Voltage is gradually increased to a high position, flows through the first LED light group 1, the electric current of the second LED light group 2 gradually rises, and electric current flows to third ginseng
Third galvanostat 91 is made to detect that the end voltage of third the reference module 92 increases after examining module 92, end voltage is increased to certain journey
Degree will make third galvanostat 91 end, and electric current can be grounded again directly through the first LED light group 1, the second LED light group 2 at this time,
To expand adjustable range.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to above embodiment, as long as with
Essentially identical means realize that the technical solution of the object of the invention belongs within protection scope of the present invention.
Claims (8)
1. a kind of pressure-controlled dimming driving circuit characterized by comprising
The different LED light group of at least two colour temperatures wherein at least includes the first LED light group and the second LED light group, the first LED light
Group, the second LED light group are sequentially connected in series and the anode of the first LED light group is electrically connected with external voltage controller power source module, the tune
It is that the first LED light group and the second LED light group are powered that piezoelectricity source module, which exports direct current,；
Second voltage with the first voltage control formula switch module of the first LED light group cooperation and with the cooperation of the second LED light group
Control formula switch module, it includes the first control terminal, first input end and the first output which, which controls formula switch module,
End, it includes the second control terminal, the second input terminal and second output terminal which, which controls formula switch module,；
Voltage controller power source module is electrically connected respectively with the first control terminal, the second control terminal to be believed according to the output of voltage controller power source module
Number respectively on-off of control first voltage control formula switch module, second voltage control formula switch module, the first LED light group it is negative
Pole and first input end are electrically connected, and the cathode of the second LED light group and the second input terminal are electrically connected, the first output end and second
Output end ground connection；
The first voltage control formula switch module includes metal-oxide-semiconductor Q1, resistance R1, the first galvanostat and is used to cooperate the first perseverance
Flow the first the reference module of device setting cutoff value；
One end of resistance R1 is electrically connected with the anode of the first LED light group, the second control terminal respectively；
The other end of resistance R1 is electrically connected with one end of the grid of metal-oxide-semiconductor Q1, resistance R2 respectively；
The input terminal of first galvanostat and the cathode of the first LED light group are electrically connected；
One end of the output end of first galvanostat and the first the reference module is electrically connected；
The drain electrode of metal-oxide-semiconductor Q1 is electrically connected with the other end of the first the reference module；
The source electrode of metal-oxide-semiconductor Q1 is grounded.
2. a kind of pressure-controlled dimming driving circuit according to claim 1, it is characterised in that: further include the first filtering mould
Block, first filter module are electrically connected with voltage controller power source module, the first control terminal respectively.
3. a kind of pressure-controlled dimming driving circuit according to claim 1, it is characterised in that: further include the second filtering mould
Block, second filter module are electrically connected with voltage controller power source module, the second control terminal respectively.
4. a kind of pressure-controlled dimming driving circuit according to claim 1, it is characterised in that: the second voltage controls formula
Switch module includes metal-oxide-semiconductor Q2, resistance R7, the second galvanostat and the second ginseng for cooperating the second galvanostat setting cutoff value
Examine module；
One end of resistance R7 is electrically connected with one end of the anode of the first LED light group, resistance R1 respectively；
The other end of resistance R7 is electrically connected with the grid of metal-oxide-semiconductor Q2 respectively；
The input terminal of second galvanostat and the cathode of the second LED light group are electrically connected；
One end of the output end of second galvanostat and the second the reference module is electrically connected；
The drain electrode of metal-oxide-semiconductor Q2 is electrically connected with the other end of the second the reference module；
One end of the source electrode of metal-oxide-semiconductor Q2 and the first the reference module is electrically connected.
5. a kind of pressure-controlled dimming driving circuit according to claim 4, it is characterised in that: it further include fictitious load module,
The anode of fictitious load module is electrically connected with the anode of the first LED light group, the cathode ground connection of fictitious load module.
6. a kind of pressure-controlled dimming driving circuit according to claim 5, it is characterised in that: the fictitious load module includes
Third galvanostat and for cooperate third galvanostat setting cutoff value third the reference module, the input terminal of the third galvanostat
With the first LED light group anode be electrically connected, the output end of third galvanostat respectively with one end of third the reference module, metal-oxide-semiconductor
The source electrode of Q1 is electrically connected, the other end ground connection of the third the reference module.
7. a kind of pressure-controlled dimming driving circuit according to claim 1, it is characterised in that: first LED light group by
The LED luminescence chip of at least one identical colour temperature is formed or is connected in series by the LED luminescence chip of at least two different-colours.
8. a kind of pressure-controlled dimming driving circuit according to claim 1, it is characterised in that: second LED light group by
The LED luminescence chip of at least one identical colour temperature is formed or is connected in series by the LED luminescence chip of at least two different-colours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710991487.8A CN107809821B (en) | 2017-10-23 | 2017-10-23 | A kind of pressure-controlled dimming driving circuit |
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| CN201710991487.8A CN107809821B (en) | 2017-10-23 | 2017-10-23 | A kind of pressure-controlled dimming driving circuit |
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| CN107809821A CN107809821A (en) | 2018-03-16 |
| CN107809821B true CN107809821B (en) | 2019-07-02 |
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| CN109147704B (en) * | 2018-09-28 | 2021-02-26 | 合肥鑫晟光电科技有限公司 | Shift register unit, grid driving circuit, display device and driving method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102892238A (en) * | 2012-10-30 | 2013-01-23 | 四川新力光源股份有限公司 | Dimming drive circuit of AC (Alternating Current) direct drive LED module |
| CN203896552U (en) * | 2014-03-26 | 2014-10-22 | 葳天科技股份有限公司 | Light-adjustable alternating current light-emitting diode device |
| US8907576B2 (en) * | 2013-01-28 | 2014-12-09 | Lumenetix, Inc. | Linear bypass electrical circuit for driving LED strings |
| CN204634098U (en) * | 2015-04-28 | 2015-09-09 | 山东科明光电科技有限公司 | A kind of colour temperature segmented adjustment LED |
| CN106937443A (en) * | 2017-03-22 | 2017-07-07 | 佛山市旺科电子科技有限公司 | Light modulation toning controller and its method based on input voltage control |
| CN107079564A (en) * | 2014-09-12 | 2017-08-18 | 西铁城电子株式会社 | Led drive circuit |
-
2017
- 2017-10-23 CN CN201710991487.8A patent/CN107809821B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102892238A (en) * | 2012-10-30 | 2013-01-23 | 四川新力光源股份有限公司 | Dimming drive circuit of AC (Alternating Current) direct drive LED module |
| US8907576B2 (en) * | 2013-01-28 | 2014-12-09 | Lumenetix, Inc. | Linear bypass electrical circuit for driving LED strings |
| CN203896552U (en) * | 2014-03-26 | 2014-10-22 | 葳天科技股份有限公司 | Light-adjustable alternating current light-emitting diode device |
| CN107079564A (en) * | 2014-09-12 | 2017-08-18 | 西铁城电子株式会社 | Led drive circuit |
| CN204634098U (en) * | 2015-04-28 | 2015-09-09 | 山东科明光电科技有限公司 | A kind of colour temperature segmented adjustment LED |
| CN106937443A (en) * | 2017-03-22 | 2017-07-07 | 佛山市旺科电子科技有限公司 | Light modulation toning controller and its method based on input voltage control |
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| CN107809821A (en) | 2018-03-16 |
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