CN107006094A - LED lamp and LED luminance regulation circuit - Google Patents
LED lamp and LED luminance regulation circuit Download PDFInfo
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- CN107006094A CN107006094A CN201780000085.5A CN201780000085A CN107006094A CN 107006094 A CN107006094 A CN 107006094A CN 201780000085 A CN201780000085 A CN 201780000085A CN 107006094 A CN107006094 A CN 107006094A
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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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A kind of LED lamp and its regulation circuit, it is adaptable to electronic technology field.Wherein, the regulation circuit of LED lamp, is connected between constant voltage source and LED load, and the regulation circuit includes：Dimming unit, voltage switching unit and constant current unit；The first direct current that dimming unit is provided according to constant voltage source exports the second direct current to constant current unit, so that constant current unit carries out constant current driving to LED load；When being dimmed to LED load, the voltage of the second direct current is adjusted voltage switching unit；Or the voltage of the second direct current is adjusted according to received dim signal for dimming unit；Or after the voltage of the second direct current is adjusted voltage switching unit, the voltage of the second direct current is adjusted according to received dim signal for dimming unit, the mode of regulation LED load brightness is enriched.
Description
Technical field
The invention belongs to electronic technology field, more particularly to a kind of LED lamp and its regulation circuit.
Background technology
With the raising of people's quality, increasing people also begins to support and advocates the life style of energy-conserving and environment-protective.LED
(Light Emitting Diode, light emitting diode) is one of current energy-saving lighting equipment generally acknowledged on the market.Although existing
LED lamp mode can realize brilliance control to LED lamp by remote control or manually etc., but be by changing PWM
What switching signal was realized.
In summary, there is the problem of brightness adjustment approach is single in existing LED lamp.
The content of the invention
The embodiments of the invention provide a kind of LED lamp and its regulation circuit, it is intended to solve existing LED lamp exist it is bright
Spend the problem of regulative mode is single.
It is an object of the invention to provide a kind of regulation circuit of LED lamp, be connected to constant voltage source and LED load it
Between, the regulation circuit includes：Dimming unit, voltage switching 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
Stream electricity, so that the constant current unit carries out constant current driving to the LED load；
When being dimmed to the LED load, the voltage switching unit is carried out to the voltage of second direct current
Regulation；
Or the voltage of second direct current is adjusted according to received dim signal for the dimming unit；
Or
After the voltage of second direct current is adjusted the voltage switching unit, the dimming unit is according to institute
The voltage of second direct current is adjusted the dim signal received.
Another object of the present invention is to provide a kind of LED lamp, including LED load, the LED for voltage switching unit
Tool also includes the regulation circuit of LED lamp as described above.
A kind of regulation circuit for LED lamp that the present invention is provided, is connected between constant voltage source and LED load, the regulation
Circuit includes：Dimming unit, voltage switching 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；Carried out to LED load
During light modulation, the voltage of the second direct current is adjusted voltage switching unit；Or dimming unit is according to received light modulation
The voltage of second direct current is adjusted signal；Or the voltage of the second direct current is adjusted in voltage switching unit
Afterwards, the voltage of the second direct current is adjusted according to received dim signal for dimming unit, enriches regulation LED load
The mode of brightness.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the regulation circuit of LED lamp provided in an embodiment of the present invention；
Fig. 2 is a kind of physical circuit figure of the regulation circuit of LED lamp provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation of LED lamp provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
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 embodiments of the invention provide a kind of LED lamp and its regulation circuit, it is intended to solve existing LED lamp exist it is bright
Spend the problem of regulative mode is single.
The realization of the present invention is described in detail below in conjunction with specific embodiment：
Fig. 1 shows a kind of structure of the regulation circuit of LED lamp of the embodiment of the present invention, for convenience of description, only shows
The part related to the embodiment of the present invention.
As shown in figure 1, a kind of regulation circuit 100 of LED lamp, is connected between constant voltage source 110 and LED load 120
It is connected, the luminosity for adjusting LED load 120.The regulation circuit 100 of the LED lamp includes：Dimming unit 10, voltage
Switch unit 20 and constant current unit 30.
The first direct current that dimming unit 10 is provided according to constant voltage source 110 exports the second direct current to constant current unit 30,
So that constant current unit 30 carries out constant current driving to LED load.
When being dimmed to LED load 120, the voltage of 20 pair of second direct current of voltage switching unit is adjusted；Or
The voltage of the second direct current is adjusted according to received dim signal for person's dimming unit 10；Or in voltage switching list
After the voltage of first 20 pair of second direct current is adjusted, dimming unit 10 is according to received dim signal to the second direct current
Voltage be adjusted.
It should be noted that voltage switching unit 20 can include multiple loads, selected not by voltage switching unit 20
With the load of resistance, and then the voltage of the signal output part of dimming unit 10 is reduced or raised, realize the electricity to the second direct current
Press the selection or switching of size.
Further, as shown in figure 1, the Regulate signal input 11 of dimming unit 10 is used to input Regulate signal, dim
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
Second output end of power supply 110 is connected, and signal output part and the output end of voltage switching unit 20 of dimming unit 10 connect constant current altogether
The signal input part of unit 30, the first signal output part of constant current unit 30 is connected with the first end of LED load 120, constant current unit
30 secondary signal output end is connected with the end of LED load 120 second.
It should be noted that according to the difference of brightness requirement, the dim signal of selection can also be different.
The voltage input end of constant current unit 30 is connected with the second output end of constant voltage source 110, and constant voltage source 110 is to constant current
Unit 30 provides the 3rd direct current as the work electricity consumption of constant current unit 30.
First signal output part of constant current unit 30 is connected with the first end of LED load 120, the secondary signal of constant current unit 30
Output end is connected with the end of LED load 120 second, wherein, the output current of constant current unit 30 is certain.
It is understood that when dimming unit 10 exports the second direct current according to the first direct current to constant current unit 30,
By voltage switching unit 20 and then the voltage of the signal input part of change constant current unit 30, because 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
Flow unit 30 signal input part voltage change and change, i.e., by switch voltage switching unit 20 so that dimming unit it is defeated
The voltage for going out end changes, to realize the selection of the watt level to the second direct current.
When the power of the second direct current is determined, by connecting, different Regulate signals is to change the voltage of the second direct current
Size, and then the size of current of the second direct current is changed with the voltage swing change of the second direct current, realize to LED
The light modulation of load 120.
It should be noted that Regulate signal can include regulation voltage signal or PWM switch frequency signals, by connection not
Same regulation voltage signal or PWM switch frequency signals, 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 so that 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 circuit of the regulation 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 open
Close pipe Q1, the first diode D1 and the first electric capacity C1.
First resistor R1 first end is the voltage input end of dimming unit, first resistor R1 the second end and second resistance
R2 first end connects first switch pipe Q1 hot end, second resistance R2 first end and the first diode D1 first end altogether
First switch pipe Q1 controlled end is connect altogether, and first switch pipe Q1 controlled end is the Regulate signal input of dimming unit 10, the
One diode D1 the second end is connected with the 4th resistance R4 first end, the 4th resistance R4 the second end ground connection, first switch pipe
Q1 cold end is connected with 3rd resistor R3 first end, and 3rd resistor R3 the second end and the first electric capacity C1 first end are total to
The 5th resistance R5 first end is connect, the 5th resistance R5 first end is the signal output part of dimming unit 10, the first electric capacity C1's
Second end and the 5th resistance R5 the second end are grounded altogether.
It should be noted that when constant voltage source 110 provides the first direct current to dimming unit 10, the first direct current passes through
First switch pipe Q1 is flowed into after first resistor R1 and second resistance R2, then is flowed out by first switch pipe Q1 cold end, with the
Loop is formed between one switching tube Q1 controlled end.Wherein, the magnitude of voltage of the first direct current is because of first switch pipe Q1 tube voltage drop
And change, then carried out by 3rd resistor R3 and the 5th resistance R5 after partial pressure, exported by the signal output part of dimming unit 10.
Further, as shown in Fig. 2 voltage switching unit 20 includes：Multiple convert resistances (Rn, Rn+1 ... Rm) and load
Selecting switch SW1.
Load selector switch SW1 includes at least one idle end DIM and multiple load connection ends, the sky of load selector switch
Load end DIM is the output end of voltage switching unit 20, and first end and the load selection of multiple convert resistances (Rn, Rn+1 ... Rm) are opened
The multiple load connection ends 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 because the signal output part and the output end of voltage switching unit 20 of 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 and the 5th resistance R5 formation parallel relationships in dimming unit 10.
For example, the magnitude of voltage for making the first direct current is 10V, first switch pipe Q1 tube voltage drop is 0.6V, works as constant voltage source
110 to dimming unit 10 provide the first direct current when, the voltage Verf=between first switch pipe Q1 cold end and ground
10V-0.6V=9.4V.
When stirring load selector switch SW1 to idle end DIM, the electricity between first switch pipe Q1 cold end and ground
Pressure Verf obtains the second direct current after 3rd resistor R3 and the 5th resistance R5 are by partial pressure, and the voltage for making second direct current is
V1, wherein, V1=Verf × R5/ (R3+R5)；Wherein, Verf is the voltage between first switch pipe Q1 cold end and ground
Value, R5 is the 5th resistance R5 resistance value, and R3 is 3rd resistor R3 resistance value.
When stirring load selector switch SW1 to convert resistance Rn ends, between first switch pipe Q1 cold end and ground
The parallel networks that are constituted by 3rd resistor R3 and the 5th resistance R5 with convert resistance Rn of voltage Verf by partial pressure, obtain second
Direct current, the voltage for making second direct current is Vn, wherein, Vn=Verf × (R5//Rn)/(R3+R5//Rn)；Wherein, Verf
For the magnitude of voltage between first switch pipe Q1 cold end and ground, (R5//Rn) is that the 5th resistance R5 is constituted with convert resistance Rn
Parallel network resistance value, R3 be 3rd resistor R3 resistance value.
Identical, when stirring load selector switch SW1 to convert resistance Rm ends, first switch pipe Q1 cold end with
The parallel network that voltage Verf between ground is constituted with convert resistance Rm by 3rd resistor R3 and the 5th resistance R5 is obtained by partial pressure
To the second direct current, the voltage for making second direct current is Vm, wherein, Vm=Verf × (R5//Rm)/(R3+R5//Rm)；Its
In, Verf is the magnitude of voltage between first switch pipe Q1 cold end and ground, and (R5//Rm), which is that the 5th resistance R5 is same, switches electricity
The resistance value of the parallel network of Rm compositions is hindered, R3 is 3rd resistor R3 resistance value.
Further, constant current unit 30 includes：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, the 11st resistance R11, the 12nd resistance R12, second
Electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6 and the 7th electric capacity C7.
Second diode D2 first end connects the 6th resistance R6 first end altogether with the 8th resistance R8 first end, and is formed
Control source node, control source node is the voltage input end of constant current unit 30, the 6th resistance R6 the second end and the 7th electricity
Resistance R7 first end connects the first chip U1 Enable Pin EN, the 7th resistance R7 the second end ground connection, the first of the 4th electric capacity C4 altogether
End and the first chip U1 voltage input end V_IN connect the second diode D1 first end, the 4th electric capacity C4 the second termination altogether
Ground, the 8th resistance R8 the second end is connected with the second electric capacity C2 first end, the second electric capacity C2 the second end and the second diode
D2 the second end connects the negative of the first chip U1 induction end LX, the first chip U1 voltage input end V_IN and the first chip U1 altogether
The 9th resistance R9, the tenth resistance R10 and the 11st resistance R11, the 3rd electric capacity C3 are parallel between the SEN of current detecting end successively
First end and the 12nd resistance R12 first end meet the first chip U1 signal input part TM, the second of the 3rd electric capacity C3 altogether
End ground connection, the 12nd resistance R12 the second end is the signal input part of constant current unit 30, the first inductance L1 first end and first
Chip U1 induction end LX is connected, the first inductance L1 the second end, the of the 5th electric capacity C5 first end and the 6th electric capacity C6
One end connects the second inductance L1 first end altogether, the first chip U1 negative current test side SEN, the 5th electric capacity C5 the second end and
6th electric capacity C6 the second end connects the second inductance L2 the second end, the 7th electric capacity C7 first end and the 3rd of the second inductance L2 altogether
End is connected, and the 7th electric capacity C7 the second end is connected with the second inductance L2 the 4th end, and the 7th electric capacity C7 first end is constant current list
First signal output part of member 30, the secondary signal output end of the 7th electric capacity C7 the second end constant current unit 30.
It should be noted that dimming unit 10 exports the second direct current according to the first direct current to constant current unit 30, pass through
12nd resistance R12 the second end is inputted to the first chip U1 signal input part TM.
Due between the first chip U1 voltage input end V_IN and the first chip U1 negative current test side SEN successively simultaneously
Be associated with the 9th resistance R9, the tenth resistance R10 and the 11st resistance R11 so that the first chip U1 voltage input end V_IN with
Pressure difference is formed between first chip U1 negative current test side SEN.
It is understood that the first chip U1 in constant current unit 30 is according to the work of the second DC powered LED load 120
During work, the second inductance L2 is used to be filtered for the signal in constant current unit 30, then by the 7th electric capacity C7 first end
Exported with the second end end to LED load 120.
As one embodiment of the invention, first switch pipe is IGBT pipes, triode or metal-oxide-semiconductor.
Further, as a preferred embodiment of the invention, first switch pipe Q1 can be NPN type triode Q1, NPN
Type triode Q1 base stage is first switch pipe Q1 controlled end, NPN type triode Q1 current collection extremely first switch pipe Q1's
Hot end, NPN type triode Q1 transmitting extremely first switch pipe Q1 cold end.
Further, as another preferred embodiment of the invention, first switch pipe Q1 can be N-type metal-oxide-semiconductor Q1, N-type
Metal-oxide-semiconductor Q1 grid is first switch pipe Q1 controlled end, and N-type metal-oxide-semiconductor Q1 drain electrode is first switch pipe Q1 hot end,
N-type metal-oxide-semiconductor Q1 source electrode is first switch pipe Q1 cold end.
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, includes the regulation circuit 100 of LED lamp as described above.
Due to a kind of LED lamp provided in the present embodiment embodiment and operation principle relevant with the present invention
In the above-described embodiments and elaborate, therefore, here is omitted.
A kind of regulation circuit for LED lamp that the present invention is provided, is connected between constant voltage source and LED load, the regulation
Circuit includes：Dimming unit, voltage switching 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；Carried out to LED load
During light modulation, the voltage of the second direct current is adjusted voltage switching unit；Or dimming unit is according to received light modulation
The voltage of second direct current is adjusted signal；Or the voltage of the second direct current is adjusted in voltage switching unit
Afterwards, the voltage of the second direct current is adjusted according to received dim signal for dimming unit, enriches regulation 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 essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (9)
1. a kind of LED luminance adjusts circuit, it is connected between constant voltage source and LED load, it is characterised in that the LED luminance
Regulation circuit includes：Dimming unit, voltage switching unit and constant current unit；
The first direct current that the dimming unit is provided according to the constant voltage source exports the second direct current to the constant current unit,
So that the constant current unit carries out constant current driving to the LED load；
When being dimmed to the LED load, the voltage of second direct current is adjusted the voltage switching unit；
Or
The voltage of second direct current is adjusted according to received dim signal for the dimming unit；Or
After the voltage of second direct current is adjusted the voltage switching unit, the dimming unit is according to being received
To dim signal the voltage of second direct current is adjusted.
2. LED luminance as claimed in claim 1 adjusts circuit, it is characterised in that the Regulate signal input of the dimming unit
Hold 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 end of the constant voltage source, the signal of the dimming unit
Output end connects the signal input part of the constant current unit, the first of the constant current unit with the voltage switching unit output end altogether
Signal output part is connected with the input of the LED load, secondary signal output end and the LED load of the constant current unit
Output end be connected.
3. LED luminance as claimed in claim 2 adjusts circuit, it is characterised in that the dimming unit includes：First resistor,
Second resistance, 3rd resistor, the 4th resistance, the 5th resistance, first switch pipe, the first diode and the first electric capacity；
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 pipe, 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 pipe altogether, and the controlled end of the first switch pipe is the dimming unit
Regulate signal input, the second end of first diode is connected with the first end of the 4th resistance, the 4th resistance
The second end ground connection, the cold end of the first switch pipe is connected with the first end of the 3rd resistor, the 3rd resistor
The first end of the second end and first electric capacity connect the first end of the 5th resistance altogether, the first end of the 5th resistance is
The signal output part of the dimming unit, the second end of first electric capacity and the second end of the 5th resistance are grounded altogether.
4. LED luminance as claimed in claim 2 adjusts circuit, it is characterised in that the voltage switching unit includes：It is multiple to cut
Change resistance and load selector switch；
The load selector switch includes at least one idle end and multiple load connection ends, the zero load of the load selector switch
Hold as the voltage switching unit output end, the first end of the multiple convert resistance is multiple negative with the load selector switch
Carry connection end 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, it is characterised in that the constant current unit includes：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, the 12nd resistance, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity and the 7th electric capacity；
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
Into control source node, the control source node is the voltage input end of the constant current unit, the second of the 6th resistance
The first end of end and the 7th resistance connects the Enable Pin of first chip, the second end ground connection of the 7th resistance, institute altogether
State the first end of the 4th electric capacity and the voltage input end of first chip and connect the first end of second diode altogether, described the
The second end ground connection of four electric capacity, the second end of the 8th resistance is connected with the first end of second electric capacity, second electricity
The second end held and the second end of second diode connect the induction end of first chip, the voltage of first chip altogether
Be parallel with successively between the negative current test side of input and first chip the 9th resistance, the tenth resistance and
11st resistance, the first end of the 3rd electric capacity connects first chip altogether with the first end of the 12nd resistance
Signal input part, the second end ground connection of the 3rd electric capacity, the second end of the 12nd resistance is the letter of the constant current unit
Number input, the first end of first inductance is connected with the induction end of first chip, the second end of first inductance,
The first end of 5th electric capacity and the first end of the 6th electric capacity connect the first end of second inductance, described first altogether
Second end of the negative current test side of chip, the second end of the 5th electric capacity and the 6th electric capacity connects second electricity altogether
Second end of sense, the first end of the 7th electric capacity is connected with the 3rd end of second inductance, and the second of the 7th electric capacity
End is connected with the 4th end of second inductance, and the first end of the 7th electric capacity is the first signal output of the constant current unit
End, the secondary signal output end of constant current unit described in the second end of the 7th electric capacity.
6. LED luminance as claimed in claim 3 adjusts circuit, it is characterised in that the first switch pipe is IGBT pipes, three poles
Pipe or metal-oxide-semiconductor.
7. LED luminance as claimed in claim 6 adjusts circuit, it is characterised in that the first switch pipe is the pole of NPN type three
Pipe, the base stage of the NPN type triode is the controlled end of the first switch pipe, the current collection extremely institute of the NPN type triode
State the hot end of first switch pipe, the cold end of the extremely described first switch pipe of transmitting of the NPN type triode.
8. the regulation circuit of LED lamp as claimed in claim 6, it is characterised in that the first switch pipe is N-type metal-oxide-semiconductor,
The grid of the N-type metal-oxide-semiconductor is the controlled end of the first switch pipe, and the drain electrode of the N-type metal-oxide-semiconductor is the first switch pipe
Hot end, the source electrode of the N-type metal-oxide-semiconductor is the cold end of the first switch pipe.
9. a kind of LED lamp, including constant voltage source and LED load, it is characterised in that the LED lamp also includes right such as will
The LED luminance described in 1 to 8 any one is 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107006094A true CN107006094A (en) | 2017-08-01 |
| CN107006094B CN107006094B (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780000085.5A Active CN107006094B (en) | 2017-03-02 | 2017-03-02 | LED lamp and LED luminance adjust circuit |
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| Country | Link |
|---|---|
| CN (1) | CN107006094B (en) |
| WO (1) | WO2018157345A1 (en) |
Cited By (1)
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| WO2021175024A1 (en) * | 2020-03-05 | 2021-09-10 | 深圳市晟碟半导体有限公司 | Led dimming circuit and device, and dimming method |
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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 |
| 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 |
| CN102413615A (en) * | 2011-11-30 | 2012-04-11 | 林万炯 | Two-wire input dimming circuit for DC-DC (direct current-direct current) control |
| CN103841714A (en) * | 2012-11-27 | 2014-06-04 | 深圳市海洋王照明工程有限公司 | LED dimming drive circuit |
| CN206759769U (en) * | 2017-03-02 | 2017-12-15 | 深圳市豪恩光电照明股份有限公司 | LED lamp and LED luminance regulation circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021175024A1 (en) * | 2020-03-05 | 2021-09-10 | 深圳市晟碟半导体有限公司 | Led dimming circuit and device, and dimming method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018157345A1 (en) | 2018-09-07 |
| CN107006094B (en) | 2019-03-19 |
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