CN107006094B - LED lamp and LED luminance adjust circuit - Google Patents
LED lamp and LED luminance adjust circuit Download PDFInfo
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- CN107006094B CN107006094B CN201780000085.5A CN201780000085A CN107006094B CN 107006094 B CN107006094 B CN 107006094B CN 201780000085 A CN201780000085 A CN 201780000085A CN 107006094 B CN107006094 B CN 107006094B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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Abstract
A kind of LED lamp and its circuit is adjusted, is suitable for electronic technology field.Wherein, the adjusting circuit of LED lamp, is connected between constant voltage source and LED load, which includes: dimming unit, voltage switch unit and constant current unit；Dimming unit exports the second direct current to constant current unit according to the first direct current that constant voltage source provides, so that constant current unit carries out constant current driving to LED load；When dimming to LED load, the voltage of the second direct current is adjusted in voltage switch unit；Or the voltage of the second direct current is adjusted in dim signal to dimming unit based on the received；Or after voltage of the voltage switch unit to the second direct current is adjusted, the voltage of the second direct current is adjusted in dim signal to dimming unit based on the received, enriches the mode for adjusting LED load brightness.
Description
Technical field
The invention belongs to electronic technology field more particularly to a kind of LED lamp and its adjust circuit.
Background technique
With the raising of people's quality, more and more people also start to support and advocate energy-saving and environment-friendly life style.LED
(Light Emitting Diode, light emitting diode) is one of the energy-saving lighting equipment generally acknowledged on the market at present.Although existing
LED lamp can by remote control or manually etc. modes realize the brightness to LED lamp control, but be by change PWM
What switching signal was realized.
In conclusion existing LED lamp has that brightness adjustment approach is single.
Summary of the invention
The embodiment of the invention provides a kind of LED lamp and its adjust circuit, it is intended to which solving existing LED lamp, there are bright
Spend the single problem of regulative mode.
The purpose of the present invention is to provide a kind of adjusting circuit of LED lamp, be connected to constant voltage source and LED load it
Between, the adjusting circuit includes: dimming unit, voltage switch unit and constant current unit；
The first direct current that the dimming unit is provided according to the constant voltage source is straight to constant current unit output second
Galvanic electricity, so that the constant current unit carries out constant current driving to the LED load；
When dimming to the LED load, the voltage switch unit carries out the voltage of second direct current
It adjusts；
Or the voltage of second direct current is adjusted in dim signal to the dimming unit based on the received；
Or
After voltage of the voltage switch unit to second direct current is adjusted, the dimming unit is according to institute
The voltage of second direct current is adjusted in the dim signal received.
Another object of the present invention is to provide a kind of LED lamp, including LED load, the LED light for voltage switch unit
Tool further includes the adjusting circuit of LED lamp as described above.
A kind of adjusting circuit of LED lamp provided by the invention, is connected between constant voltage source and LED load, the adjusting
Circuit includes: dimming unit, voltage switch unit and constant current unit；The first direct current that dimming unit is provided according to constant voltage source
Electricity exports the second direct current to constant current unit, so that constant current unit carries out constant current driving to LED load；It is carried out to LED load
When light modulation, the voltage of the second direct current is adjusted in voltage switch unit；Or dimming unit dims based on the received
The voltage of the second direct current is adjusted in signal；Or it is adjusted in voltage of the voltage switch unit to the second direct current
Afterwards, the voltage of the second direct current is adjusted in dim signal to dimming unit based on the received, enriches adjusting LED load
The mode of brightness.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the adjusting circuit of LED lamp provided in an embodiment of the present invention；
Fig. 2 is a kind of physical circuit figure of the adjusting circuit of LED lamp provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of LED lamp provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The embodiment of the invention provides a kind of LED lamp and its adjust circuit, it is intended to which solving existing LED lamp, there are bright
Spend the single problem of regulative mode.
Realization of the invention is described in detail below in conjunction with specific embodiment:
The structure that Fig. 1 shows a kind of adjusting circuit of LED lamp of the embodiment of the present invention is only shown for ease of description
Part related to the embodiment of the present invention.
As shown in Figure 1, a kind of adjusting circuit 100 of LED lamp, is connected between constant voltage source 110 and LED load 120
It is connected, for adjusting the light emission luminance of LED load 120.The adjusting circuit 100 of the LED lamp includes: dimming unit 10, voltage
Switch unit 20 and constant current unit 30.
Dimming unit 10 exports the second direct current to constant current unit 30 according to the first direct current that constant voltage source 110 provides,
So that constant current unit 30 carries out constant current driving to LED load.
When dimming to LED load 120, the voltage of the second direct current is adjusted in voltage switch unit 20；Or
The voltage of the second direct current is adjusted in dim signal to person's dimming unit 10 based on the received；Or switch in voltage single
After the voltage of first 20 pair of second direct current is adjusted, dimming unit 10 based on the received dim signal to the second direct current
Voltage be adjusted.
It should be noted that voltage switch unit 20 may include multiple loads, not by the selection of voltage switch unit 20
With the load of resistance value, and then the voltage of the signal output end of dimming unit 10 is reduced or increased, realizes the electricity to the second direct current
Press the selection or switching of size.
Further, as shown in Figure 1, the adjustment signal input terminal 11 of dimming unit 10 is dimmed for inputting adjustment signal
The voltage input end of unit 10 is connected with the first output end of constant voltage source 110, the voltage input end and constant pressure of constant current unit 30
The second output terminal of power supply 110 is connected, and the signal output end and 20 output end of voltage switch unit of dimming unit 10 connect constant current altogether
First signal output end of the signal input part of unit 30, constant current unit 30 is connected with 120 first end of LED load, constant current unit
30 second signal output end is connected with 120 second end of LED load.
It should be noted that the dim signal of selection is also possible to different according to the difference of brightness requirement.
The voltage input end of constant current unit 30 is connected with the second output terminal of constant voltage source 110, and constant voltage source 110 is to constant current
Unit 30 provides work electricity consumption of the third direct current as constant current unit 30.
First signal output end of constant current unit 30 is connected with 120 first end of LED load, the second signal of constant current unit 30
Output end is connected with 120 second end of LED load, wherein the output electric current of constant current unit 30 is certain.
It is understood that when dimming unit 10 exports the second direct current to constant current unit 30 according to the first direct current,
The voltage for changing the signal input part of constant current unit 30 by voltage switch unit 20, since constant current unit 30 is negative to LED
The electric current for carrying 120 outputs is certain value, therefore when the voltage change of the signal input part of constant current unit 30, in order to keep constant current
The electric current that unit 30 is exported to LED load 120 is constant, and the watt level of the second direct current of the input of constant current unit 30 is also with perseverance
It flows the voltage change of the signal input part of unit 30 and changes, i.e., make the defeated of dimming unit by switching voltage switch unit 20
The voltage of outlet changes, to realize the selection to the watt level of the second direct current.
When the power of the second direct current determines, change the voltage of the second direct current by connecting different adjustment signals
Size is realized so that the size of current of the second direct current changes as the voltage swing of the second direct current changes to LED
The light modulation of load 120.
It should be noted that adjustment signal may include adjusting voltage signal or PWM switch frequency signal, by connecting not
Same adjusting voltage signal or PWM switch frequency signal, and then change the voltage swing of the second direct current, due to the second direct current
Power it has been determined that therefore by change the second direct current voltage swing, thus change change the second direct current electric current it is big
It is small, realize the light modulation to LED load 120.
Fig. 2 shows a kind of physical circuits of the adjusting circuit of LED lamp provided in an embodiment of the present invention.As shown in Fig. 2,
Dimming unit 10 includes: first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, first opens
Close pipe Q1, first diode D1 and first capacitor C1.
The first end of first resistor R1 is the voltage input end of dimming unit, the second end and second resistance of first resistor R1
The first end of R2 connects the hot end of first switch tube Q1, the first end of second resistance R2 and the first end of first diode D1 altogether
The controlled end of first switch tube Q1 is connect altogether, the controlled end of first switch tube Q1 is the adjustment signal input terminal of dimming unit 10, the
The second end of one diode D1 is connected with the first end of the 4th resistance R4, the second end ground connection of the 4th resistance R4, first switch tube
The cold end of Q1 is connected with the first end of 3rd resistor R3, and the second end of 3rd resistor R3 and the first end of first capacitor C1 are total
The first end of the 5th resistance R5 is connect, the first end of the 5th resistance R5 is the signal output end of dimming unit 10, first capacitor C1's
Second end and the second end of the 5th resistance R5 are grounded altogether.
It should be noted that first direct current passes through when constant voltage source 110 provides the first direct current to dimming unit 10
First switch tube Q1 is flowed into after first resistor R1 and second resistance R2, then is flowed out by the cold end of first switch tube Q1, with the
It is formed into a loop between the controlled end of one switching tube Q1.Wherein, tube voltage drop of the voltage value of the first direct current because of first switch tube Q1
And change, then after being divided by 3rd resistor R3 and the 5th resistance R5, it is exported by the signal output end of dimming unit 10.
Further, as shown in Fig. 2, voltage switch unit 20 includes: multiple convert resistances (Rn, Rn+1 ... Rm) and load
Select switch SW1.
Load selector switch SW1 includes at least one idle end DIM and multiple load connecting pins, the sky of load selector switch
Load end DIM is 20 output end of voltage switch unit, and first end and the load selection of multiple convert resistances (Rn, Rn+1 ... Rm) are opened
The multiple load connecting pins for closing SW1 are respectively connected with, and the second end of multiple convert resistances (Rn, Rn+1 ... Rm) is grounded altogether.
It should be noted that the signal output end and 20 output end of voltage switch unit due to dimming unit 10 connect constant current altogether
The signal input part of unit 30, when stirring load selector switch SW1, and then select load selector switch idle end with it is multiple
Any resistance is connected in convert resistance (Rn, Rn+1 ... Rm), so that any electricity of multiple convert resistances (Rn, Rn+1 ... Rm)
Resistance forms parallel relationship with the 5th resistance R5 in dimming unit 10.
For example, enabling the voltage value of the first direct current is 10V, the tube voltage drop of first switch tube Q1 is 0.6V, works as constant voltage source
110 when providing the first direct current to dimming unit 10, voltage Verf=between the cold end and ground of first switch tube Q1
10V-0.6V=9.4V.
Electricity when stirring load selector switch SW1 to idle end DIM, between the cold end and ground of first switch tube Q1
Pressure Verf obtains the second direct current after 3rd resistor R3 and the 5th resistance R5 are divided, and enables the voltage of second direct current be
V1, wherein V1=Verf × R5/ (R3+R5)；Wherein, Verf is the voltage between the cold end and ground of first switch tube Q1
Value, R5 are the resistance value of the 5th resistance R5, and R3 is the resistance value of 3rd resistor R3.
When stirring load selector switch SW1 to the convert resistance end Rn, between the cold end and ground of first switch tube Q1
Voltage Verf divided with the parallel network that convert resistance Rn is formed by 3rd resistor R3 and the 5th resistance R5, obtain second
Direct current, enabling the voltage of second direct current is Vn, wherein Vn=Verf × (R5//Rn)/(R3+R5//Rn)；Wherein, Verf
For the voltage value between the cold end and ground of first switch tube Q1, (R5//Rn) is that the 5th resistance R5 is formed with convert resistance Rn
Parallel network resistance value, R3 be 3rd resistor R3 resistance value.
It is identical, when stirring load selector switch SW1 to the convert resistance end Rm, the cold end of first switch tube Q1 with
Voltage Verf between ground is divided by 3rd resistor R3 and the 5th resistance R5 with the parallel network that convert resistance Rm is formed, and is obtained
To the second direct current, enabling the voltage of second direct current is Vm, wherein Vm=Verf × (R5//Rm)/(R3+R5//Rm)；Its
In, Verf is the voltage value between the cold end and ground of first switch tube Q1, and (R5//Rm), which is that the 5th resistance R5 is same, switches electricity
The resistance value of the parallel network of Rm composition is hindered, R3 is the resistance value of 3rd resistor R3.
Further, constant current unit 30 include: the first chip U1, the first inductance L1, the second inductance L2, the 6th resistance R6,
7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, eleventh resistor R11, twelfth resistor R12, second
Capacitor C2, third capacitor C3, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6 and the 7th capacitor C7.
The first end of second diode D2 and the first end of the 8th resistance R8 connect the first end of the 6th resistance R6 altogether, and are formed
Voltage input node, voltage input node are the voltage input end of constant current unit 30, the second end of the 6th resistance R6 and the 7th electricity
The first end of resistance R7 meets the enable end EN of the first chip U1 altogether, and the second end of the 7th resistance R7 is grounded, and the first of the 4th capacitor C4
The voltage input end V_IN of end and the first chip U1 connect the first end of the second diode D1, the second termination of the 4th capacitor C4 altogether
Ground, the second end of the 8th resistance R8 are connected with the first end of the second capacitor C2, the second end and the second diode of the second capacitor C2
The second end of D2 connects the negative of the induction end LX, the voltage input end V_IN of the first chip U1 and the first chip U1 of the first chip U1 altogether
The 9th resistance R9, the tenth resistance R10 and eleventh resistor R11, third capacitor C3 are successively parallel between the SEN of current detecting end
First end and the first end of twelfth resistor R12 meet the signal input part TM of the first chip U1 altogether, the second of third capacitor C3
End ground connection, the second end of twelfth resistor R12 are the signal input part of constant current unit 30, the first end and first of the first inductance L1
The induction end LX of chip U1 is connected, and the of the second end of the first inductance L1, the first end of the 5th capacitor C5 and the 6th capacitor C6
One end connects the first end of the second inductance L1 altogether, the negative current test side SEN of the first chip U1, the second end of the 5th capacitor C5 and
The second end of 6th capacitor C6 connects the second end of the second inductance L2, the third of the first end of the 7th capacitor C7 and the second inductance L2 altogether
End is connected, and the second end of the 7th capacitor C7 is connected with the 4th end of the second inductance L2, and the first end of the 7th capacitor C7 is constant current list
First signal output end of member 30, the second signal output end of the second end constant current unit 30 of the 7th capacitor C7.
It should be noted that dimming unit 10 exports the second direct current to constant current unit 30 according to the first direct current, pass through
The second end of twelfth resistor R12 is input to the signal input part TM of the first chip U1.
Due between the negative current test side SEN of the voltage input end V_IN and the first chip U1 of the first chip U1 successively simultaneously
Be associated with the 9th resistance R9, the tenth resistance R10 and eleventh resistor R11 so that the voltage input end V_IN of the first chip U1 with
Pressure difference is formed between the negative current test side SEN of first chip U1.
It is understood that the first chip U1 in constant current unit 30 is according to 120 work of the second DC powered LED load
During work, the second inductance L2 is used to be filtered for the signal in constant current unit 30, then by the first end of the 7th capacitor C7
It exports with second end end to LED load 120.
As one embodiment of the invention, first switch tube is IGBT pipe, triode or metal-oxide-semiconductor.
Further, as a preferred embodiment of the invention, first switch tube Q1 can be NPN type triode Q1, NPN
The base stage of type triode Q1 is the controlled end of first switch tube Q1, the current collection of NPN type triode Q1 extremely first switch tube Q1's
Hot end, the transmitting extremely cold end of first switch tube Q1 of NPN type triode Q1.
Further, as another preferred embodiment of the present invention, first switch tube Q1 can be N-type metal-oxide-semiconductor Q1, N-type
The grid of metal-oxide-semiconductor Q1 is the controlled end of first switch tube Q1, and the drain electrode of N-type metal-oxide-semiconductor Q1 is the hot end of first switch tube Q1,
The source electrode of N-type metal-oxide-semiconductor Q1 is the cold end of first switch tube Q1.
The another object of the present embodiment is to provide a kind of LED lamp 200, as shown in figure 3, LED lamp 200 includes LED
Load 120, further includes the adjusting circuit 100 of LED lamp as described above.
A kind of specific embodiment related to the present invention of the LED lamp as provided in the present embodiment and working principle
It in the above-described embodiments and elaborates, therefore, details are not described herein again.
A kind of adjusting circuit of LED lamp provided by the invention, is connected between constant voltage source and LED load, the adjusting
Circuit includes: dimming unit, voltage switch unit and constant current unit；The first direct current that dimming unit is provided according to constant voltage source
Electricity exports the second direct current to constant current unit, so that constant current unit carries out constant current driving to LED load；It is carried out to LED load
When light modulation, the voltage of the second direct current is adjusted in voltage switch unit；Or dimming unit dims based on the received
The voltage of the second direct current is adjusted in signal；Or it is adjusted in voltage of the voltage switch unit to the second direct current
Afterwards, the voltage of the second direct current is adjusted in dim signal to dimming unit based on the received, enriches adjusting LED load
The mode of brightness.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of LED luminance adjusts circuit, it is connected between constant voltage source and LED load, which is characterized in that the LED luminance
Adjusting circuit includes: dimming unit, voltage switch unit and constant current unit；
The dimming unit exports the second direct current to the constant current unit according to the first direct current that the constant voltage source provides,
So that the constant current unit carries out constant current driving to the LED load；
When dimming to the LED load, the voltage of second direct current is adjusted in the voltage switch unit；
Or
The voltage of second direct current is adjusted in dim signal to the dimming unit based on the received；Or
After voltage of the voltage switch unit to second direct current is adjusted, the dimming unit is according to being received
To dim signal the voltage of second direct current is adjusted；
The voltage switch unit includes multiple loads, the load of different resistance values is selected by voltage switch unit, and then reduce
Or the voltage of the signal output end of dimming unit is increased, realize selection or switching to the voltage swing of the second direct current.
2. LED luminance as described in claim 1 adjusts circuit, which is characterized in that the adjustment signal of the dimming unit inputs
End is for accessing the dim signal, the first output end phase of the voltage input end of the dimming unit and the constant voltage source
Even, the voltage input end of the constant current unit is connected with the second output terminal of the constant voltage source, the signal of the dimming unit
Output end and the voltage switch unit output end connect the signal input part of the constant current unit altogether, and the first of the constant current unit
Signal output end is connected with the input terminal of the LED load, the second signal output end of the constant current unit and the LED load
Output end be connected.
3. LED luminance as claimed in claim 2 adjusts circuit, which is characterized in that the dimming unit include: first resistor,
Second resistance, 3rd resistor, the 4th resistance, the 5th resistance, first switch tube, first diode and first capacitor；
The first end of the first resistor be the dimming unit voltage input end, the second end of the first resistor with it is described
The first end of second resistance connects the hot end of the first switch tube, the first end of the second resistance and the described 1st altogether
The first end of pole pipe connects the controlled end of the first switch tube altogether, and the controlled end of the first switch tube is the dimming unit
Adjustment signal input terminal, the second end of the first diode are connected with the first end of the 4th resistance, the 4th resistance
Second end ground connection, the cold end of the first switch tube is connected with the first end of the 3rd resistor, the 3rd resistor
Second end and the first end of the first capacitor connect the first end of the 5th resistance altogether, the first end of the 5th resistance is
The signal output end of the dimming unit, the second end of the first capacitor and the second end of the 5th resistance are grounded altogether.
4. LED luminance as claimed in claim 2 adjusts circuit, which is characterized in that the voltage switch unit includes: multiple cuts
Change resistance and load selector switch；
The load selector switch includes at least one idle end and multiple load connecting pins, the zero load of the load selector switch
End is the voltage switch unit output end, and the first end of the multiple convert resistance and the multiple of the load selector switch bear
It carries connecting pin to be respectively connected with, the second end of the multiple convert resistance is grounded altogether.
5. LED luminance as claimed in claim 2 adjusts circuit, which is characterized in that the constant current unit include: the first chip,
First inductance, the second inductance, the second diode, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance,
11 resistance, twelfth resistor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor and the 7th capacitor；
The first end of second diode and the first end of the 8th resistance connect the first end of the 6th resistance, and shape altogether
At voltage input node, the voltage input node be the constant current unit voltage input end, the second of the 6th resistance
The first end of end and the 7th resistance meets the enable end of first chip, the second end ground connection of the 7th resistance, institute altogether
The voltage input end of the first end of stating the 4th capacitor and first chip connects the first end of second diode altogether, and described the
The second end of four capacitors is grounded, and the second end of the 8th resistance is connected with the first end of second capacitor, second electricity
The second end of appearance and the second end of second diode connect the induction end of first chip, the voltage of first chip altogether
Successively be parallel between input terminal and the negative current test side of first chip the 9th resistance, the tenth resistance and
The eleventh resistor, the first end of the third capacitor and the first end of the twelfth resistor connect first chip altogether
Signal input part, the second end ground connection of the third capacitor, the second end of the twelfth resistor is the letter of the constant current unit
Number input terminal, the first end of first inductance are connected with the induction end of first chip, the second end of first inductance,
The first end of 5th capacitor and the first end of the 6th capacitor connect the first end of second inductance altogether, and described first
The second end of the negative current test side of chip, the second end of the 5th capacitor and the 6th capacitor connects second electricity altogether
The first end of the second end of sense, the 7th capacitor is connected with the third end of second inductance, and the second of the 7th capacitor
End is connected with the 4th end of second inductance, and the first end of the 7th capacitor is that the first signal of the constant current unit exports
It holds, the second signal output end of constant current unit described in the second end of the 7th capacitor.
6. LED luminance as claimed in claim 3 adjusts circuit, which is characterized in that the first switch tube is IGBT pipe, three poles
Pipe or metal-oxide-semiconductor.
7. LED luminance as claimed in claim 6 adjusts circuit, which is characterized in that the first switch tube is three pole of NPN type
Pipe, the base stage of the NPN type triode are the controlled end of the first switch tube, the current collection of the NPN type triode extremely institute
State the hot end of first switch tube, the cold end of the extremely described first switch tube of transmitting of the NPN type triode.
8. the adjusting circuit of LED lamp as claimed in claim 6, which is characterized in that the first switch tube is N-type metal-oxide-semiconductor,
The grid of the N-type metal-oxide-semiconductor is the controlled end of the first switch tube, and the drain electrode of the N-type metal-oxide-semiconductor is the first switch tube
Hot end, the source electrode of the N-type metal-oxide-semiconductor is the cold end of the first switch tube.
9. a kind of LED lamp, including constant voltage source and LED load, which is characterized in that the LED lamp further includes that right such as is wanted
1 to 8 described in any item LED luminances are asked to adjust circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/075427 WO2018157345A1 (en) | 2017-03-02 | 2017-03-02 | Led lamp and led brightness regulation circuit |
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| Publication Number | Publication Date |
|---|---|
| CN107006094A CN107006094A (en) | 2017-08-01 |
| CN107006094B true CN107006094B (en) | 2019-03-19 |
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|---|---|---|---|
| CN201780000085.5A Active CN107006094B (en) | 2017-03-02 | 2017-03-02 | LED lamp and LED luminance adjust circuit |
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| CN (1) | CN107006094B (en) |
| WO (1) | WO2018157345A1 (en) |
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| CN109736224A (en) * | 2019-02-28 | 2019-05-10 | 河南陆达电子科技有限公司 | A kind of active tunnel contour mark and tunnel traffic inducible system |
| CN112020175B (en) * | 2019-05-13 | 2024-06-14 | 广东芯神科技有限公司 | LED dimming circuit and equipment |
| CN111343764A (en) * | 2020-03-05 | 2020-06-26 | 深圳市晟碟半导体有限公司 | LED dimming circuit, device and dimming method thereof |
| CN112333875A (en) * | 2020-11-30 | 2021-02-05 | 常州倍速智能科技有限公司 | Vehicle-mounted energy-saving illuminating lamp |
| CN113286399A (en) * | 2021-04-26 | 2021-08-20 | 上海利霸电子科技有限公司 | PWM drive circuit of many luminance light show stage property |
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| CN102264175A (en) * | 2010-05-26 | 2011-11-30 | 马士科技有限公司 | Light emitting diode lamp dimming device capable of realizing stepped dimming |
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| CN102413615B (en) * | 2011-11-30 | 2014-08-06 | 林万炯 | Two-wire input dimming circuit for DC-DC (direct current-direct current) control |
| CN103841714B (en) * | 2012-11-27 | 2016-01-13 | 深圳市海洋王照明工程有限公司 | LED dimming driving circuit |
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- 2017-03-02 WO PCT/CN2017/075427 patent/WO2018157345A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264175A (en) * | 2010-05-26 | 2011-11-30 | 马士科技有限公司 | Light emitting diode lamp dimming device capable of realizing stepped dimming |
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| Publication number | Publication date |
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| CN107006094A (en) | 2017-08-01 |
| WO2018157345A1 (en) | 2018-09-07 |
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Address after: 518000 Longhua New District, Shenzhen, Guangdong, Da wave Street Da wave office, Tong Sheng Industrial Park Road, Horne Science Park, building A two floor, C area, middle and southern section of B District Applicant after: Shenzhen haoen intelligent joint Limited by Share Ltd Address before: 518000 Longhua New District, Shenzhen, Guangdong, Da wave Street Da wave office, Tong Sheng Industrial Park Road, Horne Science Park, building A two floor, C area, middle and southern section of B District Applicant before: SHENZHEN HORN PHOTOELECTRIC LIGHTING CO., LTD. |
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Inventor after: Yang Lin Inventor after: Yang Shijun Inventor after: Yang Haitao Inventor before: Zhou Feng Inventor before: Yang Lin Inventor before: Yang Shijun Inventor before: Yang Haitao |
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