CN104113972B - LED power switching circuit - Google Patents
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- CN104113972B CN104113972B CN201410391911.1A CN201410391911A CN104113972B CN 104113972 B CN104113972 B CN 104113972B CN 201410391911 A CN201410391911 A CN 201410391911A CN 104113972 B CN104113972 B CN 104113972B
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Abstract
The present invention provides a kind of LED power switching circuit, it is applied in the light adjusting circuit at least include LED warm colour temperature modules and LED cool colour temperature modules, including LED drive power, switch unit, control unit, power circuit of the switch unit to conducting LED warm colour temperature modules and LED cool colour temperature module one of which when switching signal is received；Control unit connects LED drive power and switch unit, for while to switch unit output switching signal, matching PWM dim signal is exported to LED drive power according to the attribute of switching signal, to change driving voltage or the electric current that LED drive power is exported to LED warm colour temperature modules or LED cool colour temperature module, the present invention utilizes switch unit, realize that a LED drive power is driven in turn and light LED warm colour temperature modules or LED cool colour temperature modules, make circuit small volume, circuit design it is simple, and the advantages of there is no standby power consumption.
Description
Technical field
The present invention relates to LED light modulations field, more particularly to a kind of LED power switching circuit.
Background technology
LED is referred to as forth generation light source, with energy-saving and environmental protection, safety, life-span length, low-power consumption, high brightness, miniature, anti-
Shake, easily light modulation, light beam are concentrated, easy maintenance the features such as, can be widely applied to various instructions, display, decoration, backlight, general
The fields such as logical illumination.
By dimming to LED, it is possible to achieve various light-out effects, meet different user in different situations will
Ask, such as, by adopting appropriate dimming mode, reduce the brightness of LED lamp, also reduce operating power, reduce work(
Consumption, reduces the consumption of electric energy.And by light modulation, have no effect on illuminating effect, sometimes exactly have to.Again for example
The module design of LED is cool colour system and warm colour system, and use when such as cool colour system is used for work or is engaged in housework, warm colour system are used for evening
Upper h.d. is used.
Conventional LED dimming modes are mainly in PWM light modulations currently on the market, and PWM light modulations can support that depth is dimmed,
LED is always worked between full amplitude current and 0, will not produce chromatograph skew, the system tray that existing LED light modulations toning drives
Double BUCK changers are generally included in structure, for realizing the driving of LED, wherein BUCK drives the LED modules of cool colour temperature all the way, separately
BUCK drives the LED modules of warm colour temperature all the way.Although this framework can realize light modulation, there is problems with：(1) due to electricity
Source adopts multi-channel driver circuit, and cost can be higher；(2) as power supply adopts multi-channel driver circuit, the volume of integrated circuit compared with
Greatly, assembling and the light-out effect of LED lamp can be affected, and more difficult carries out Miniaturization Design；(3) consumer typically will not be simultaneously
It is operated using the LED of multiple color tones, thus can there is the idle situation of power drives always, this there is standby work(
The problem of consumption, that is, cause the wasting of resources；(4) multi-channel driver circuit is adopted in circuit, circuit design is more complicated, and goes out can circuit
The probability of existing problem increases.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of LED power switching circuit, uses
In prior art is solved, light adjusting circuit high cost, volume be big, complex circuit designs, high standby power consumption the problems such as.
For achieving the above object and other related purposes, the present invention provides a kind of LED power switching circuit, is applied at least
In light adjusting circuit including LED warm colour temperature modules and LED cool colour temperature modules, including：LED drive power, its input connect
The AC or DC power of outside input, the positive pole of its outfan connect the LED warm colours temperature module in parallel respectively
And the LED cool colours temperature module；Switch unit, connects the negative pole and the LED warm colours of the outfan of the LED drive power
Warm module and the LED cool colours temperature module, the LED warm colours temperature module and described is turned on when switching signal is received
The power circuit of LED cool colour temperature module one of which；Control unit, connects the LED drive power and the switch unit,
For, while to the switch unit output switching signal, electricity being driven to the LED according to the attribute of the switching signal
Source exports matching PWM dim signals, to change the LED drive power to the LED warm colours temperature module or the LED
The driving voltage or electric current of cool colour temperature module output.
Optionally, the infrared control signal that described control unit is sent according to IR remote controller, is that the switch unit is carried
The PWM dim signals are provided for switching signal and for the LED drive power；The IR remote controller is provided with cool colour temperature
With warm colour temperature selection key.
Optionally, described control unit is single-chip microcomputer.
Optionally, the switch unit is by resistance R1, R2, R3, R4, R5, R6, NPN triode Q1, Q3, and tri- poles of PNP
Pipe Q2, Q4 are constituted, wherein, one end of the resistance R1 is connected with the pin S1 of described control unit, and the resistance R1's is another
End is connected with the base stage of the NPN triode Q1, the grounded emitter of the NPN triode Q1, the collection of the NPN triode Q1
Electrode is connected with one end of the resistance R2, one end and the PNP tri- of the other end of the resistance R2 and the resistance R3
The base stage connection of level pipe Q2, the other end of the resistance R3 and the input of the LED drive power and the PNP triodes
The emitter stage connection of Q2, the colelctor electrode of the PNP triodes Q2 are connected with the LED warm colours temperature module；The one of the resistance R4
End is connected with the pin S2 of described control unit, and the other end of the resistance R4 is connected with the base stage of NPN triode Q3, institute
The grounded emitter of NPN triode Q3 is stated, the colelctor electrode of NPN triode Q3 is connected with one end of the resistance R5, described
The other end of resistance R5 is connected with one end of the resistance R6 and the base stage of the PNP triodes Q4, and the resistance R6's is another
One end is connected with the emitter stage of the input of the LED drive power and the PNP triodes Q4, the PNP triodes Q4
Colelctor electrode be connected with the LED cool colours temperature module.
Optionally, the switch unit is by optocoupler OP1, OP2, resistance R7, R8, R9, R10, R11, R12, and tri- poles of PNP
Pipe Q5, Q6 are constituted, wherein, one end of the resistance R7 is connected with the pin S1 of described control unit, and the resistance R7's is another
End is connected with the anode of the optocoupler OP1 former limit light emitting diodes, the minus earth of the optocoupler OP1 former limit light emitting diodes,
The emitter stage of the optocoupler OP1 secondary phototriodes with the input of the LED drive power in succession, the optocoupler OP1 pairs
The colelctor electrode of side phototriode is connected with one end of the resistance R8, the other end of the resistance R8 and the one of the resistance R9
The base stage connection of end and PNP triode Q5, the other end of the resistance R9 and the outfan of the LED drive power with
And the emitter stage of PNP triode Q5 connects, the colelctor electrode of PNP triode Q5 is connected with the LED warm colours temperature module；
One end of the resistance R10 is connected with the pin S2 of described control unit, the other end of the resistance R10, with the optocoupler OP2
The anode connection of former limit light emitting diode, the minus earth of the optocoupler OP2 former limit light emitting diodes, the optocoupler OP2 secondary
The input of the emitter stage of phototriode and the LED drive power in succession, the collection of the optocoupler OP2 secondary phototriodes
Electrode is connected with one end of the resistance R11, one end and the PNP of the other end of the resistance R11 and the resistance R12
The base stage connection of audion Q6, the other end of the resistance R12 and the outfan of the LED drive power and the PNP tri-
The emitter stage connection of pole pipe Q6, the colelctor electrode of PNP triode Q6 are connected with the LED cool colours temperature module.
Optionally, the light color temperature that goes out of the LED warm colours temperature module is 2000k～3300k.
Optionally, the light color temperature that goes out of the LED cool colours temperature module is 6000k～7000k.
As described above, the LED power switching circuit of the present invention, using Switching power, realizes that LED drive power is at least all the way
Two kinds of different outputs are realized, so as to control lighting in turn at least two groups of LED modules, different light-out effects is realized, is had
Low cost, small volume, circuit design be simple, and the advantages of there is no standby power consumption, wherein small volume can facilitate LED lamp
Multifarious design, circuit design can simply reduce the probability of circuit damage.
Description of the drawings
Fig. 1 is shown as a kind of LED drive circuit of the invention modular structure schematic diagram in one embodiment.
Fig. 2 is shown as the switch unit circuit theory diagrams in one embodiment of the present invention.
Fig. 3 is shown as the switch unit circuit theory diagrams in one embodiment of the present invention.
Component label instructions
1 LED warm colour temperature modules
2 LED cool colour temperature modules
3 LED drive powers
4 switch units
5 control units
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Refer to Fig. 1 to Fig. 3.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to
Coordinate the content disclosed in description, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualificationss applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where effect that can be generated of the invention and the purpose that can be reached is not affected, still all should fall in disclosed skill
In the range of art content is obtained and can be covered.Meanwhile, in this specification it is cited as " on ", D score, "left", "right", " centre " and
The term of " one " etc., is merely convenient to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness
It is altered or modified, under without essence change technology contents, when being also considered as enforceable category of the invention.
Light source color temperature is different, photochromic also different, such as colour temperature in below 3300K, light colour cast is red give it is steady, warm
Feel, be otherwise known as warm colour temperature；Colour temperature in the middle of 3000～6000K, imitate without particularly apparent visual psychology under this tone by people
Really, there is the sensation of frankness, therefore be referred to as neutral colour temperature；, more than 6000K, light colour cast is blue for colour temperature, gives chilly sensation, therefore is referred to as
Cool colour temperature.And different light source color temperatures coordinates different light-source brightness preferably help people to use light source, for example indoors,
Particularly in bedroom, when people want to enter into sleep state, colour temperature is adjusted to into warm colour temperature state, for example, light color generally
It is partially red, and light source is dark, contributes to the sleep of people, and is particularly in working space on daytime, is generally adjusted to colour temperature cold
Colour temperature, light source is adjusted to highlighted, is conducive to the process problem that people's brain is clear-headed, so day it is commonly used it is more be according to
The different demands at family are the regulation between the gentle cool colour using warming therapy of the warm colour of light fixture, and realize respectively gentle with the warm colour described cold
The corresponding light-source brightness of colour temperature.
The present invention proposes a kind of LED power switching circuit, for switched conductive LED warm colour temperature module or LED cool colours
Warm module, and matched PWM dim signals are exported to the LED warm colours temperature module or LED cool colour temperature module respectively,
Realization selectively drives LED warm colour temperature modules or LED cool colour temperature modules by a LED drive power, refers to Fig. 1, shows
A kind of LED drive circuit of the invention modular structure schematic diagram in one embodiment is shown as, is applied at least warm including LED
In the light adjusting circuit of colour temperature module 1 and LED cool colour temperature module 2, including LED drive power 3, switch unit 4, and control it is single
Unit 5.
The LED drive power 3, its input connect the AC or DC power of outside input, for example, friendship of 220v
Stream civil power, the positive pole of its outfan connect the LED warm colours temperature module 1 and the LED cool colours Wen Mo in parallel respectively
Group 2；The light color temperature that goes out of the LED warm colours temperature module 1 is 2000k～3300k.The light color temperature that goes out of the LED cool colours temperature module 2 is
6000k～7000k.The LED drive power 3 is converted to specific voltage or electric current to drive LED to send out for supplying power supply
Light.
The switch unit 4, connects the negative pole and the LED warm colours temperature module of the outfan of the LED drive power 3
1 and the LED cool colours temperature module 2, it is cold the LED warm colours temperature module 1 and the LED are turned on when switching signal is received
The power circuit of 2 one of which of colour temperature module.
Described control unit 5, connects the LED drive power 3 and the switch unit 4, for single to the switching
While first 4 output switching signal, export matching to the LED drive power 3 according to the attribute of the switching signal
PWM dim signals, it is defeated to 1 or described LED cool colour temperature modules 2 of the LED warm colours temperature module to change the LED drive power 3
The driving voltage for going out or electric current.The attribute of the switching signal, including two kinds, when as lighting the LED warm colours temperature module 1
The switching signal and be, for example, single to light the switching signal described control unit 5 during the LED cool colours temperature module 1
Piece machine.Preferably, the infrared control signal that described control unit 5 is sent according to IR remote controller, is that the switch unit 4 is provided
Switching signal and the PWM dim signals are provided for the LED drive power 3.There is " cool colour temperature " on the IR remote controller
" warm colour temperature " two kinds of buttons.
In one embodiment, the physical circuit figure of the switch unit 4, refers to Fig. 2, is shown as cutting for the present invention
Unit circuit theory diagrams in one embodiment are changed, the switch unit is by resistance R1, R2, R3, R4, R5, R6, NPN tri-
Pole pipe Q1, Q3, and PNP triode Q2, Q4 composition, wherein, one end of the resistance R1 and the pin S1 of described control unit
Connection, the other end of the resistance R1 are connected with the base stage of the NPN triode Q1, and the emitter stage of the NPN triode Q1 connects
Ground, the colelctor electrode of the NPN triode Q1 are connected with one end of the resistance R2, the other end and the resistance of the resistance R2
The base stage connection of one end of R3 and the PNP triodes Q2, the other end of the resistance R3 are defeated with the LED drive power
Enter the emitter stage connection of end and the PNP triodes Q2, the colelctor electrode of the PNP triodes Q2 and the LED warm colours Wen Mo
Group connection；One end of the resistance R4 is connected with the pin S2 of described control unit, the other end and the NPN of the resistance R4
Audion Q3 base stage connection, the grounded emitter of NPN triode Q3, the colelctor electrode of NPN triode Q3 with it is described
One end connection of resistance R5, the base of the other end of the resistance R5 one end and the PNP triodes Q4 with the resistance R6
Pole connection, the other end of the resistance R6 and the input of the LED drive power and the emitter stage of the PNP triodes Q4
Connection, the colelctor electrode of the PNP triodes Q4 are connected with the LED cool colours temperature module.Preferably, the resistance R1, R3, R4,
The resistance of R6 is 100k, and the resistance of described resistance R2, R5 is 4.7k.
For example, when user presses " warm colour temperature " button of the IR remote controller, described control unit 5 can be to described
LED drive power 3 is input into the PWM dim signal corresponding with the warm color temperature mode of preset in advance, is flowed through with control described
The size of the electric current of LED warm colour temperature module 1, that is, control the luminosity of the LED warm colours temperature module 1, is such as adapted to night rest
Before the luminosity of LED warm colour temperature module 1 lighted suitably be adjusted to compared with low-light level, and while described control unit 5 can be to S1
The base stage of the pwm signal to the NPN triode Q1 of pin output 5V, makes the NPN triode Q1 conducting, due to the NPN
Audion Q1 has base current to flow, therefore makes the NPN triode Q1 colelctor electrode flow through bigger amplification electric current, therefore loads
Loop is just switched on, i.e., equivalent to the closure of switch, now the NPN triode Q1 works in saturation region, and tri- poles of the PNP
The base stage of pipe Q2 has electric current, then the conducting of PNP triode Q2, i.e. the corresponding LED warm colours temperature module of this switching circuit 1 just starts
Often work, in the same manner, when user presses " cool colour temperature " button of the IR remote controller, described control unit 5 can be to the LED
Driving power supply 3 is input into the PWM dim signal corresponding with the cold color temperature mode of preset in advance, to control to flow through the LED
The size of the electric current of cool colour temperature module 2, that is, control the luminosity of the LED cool colours temperature module 2, and while described control unit
To NPN triode Q3, the LED cool colours temperature module 2 starts normal work to the pwm signal of 5 to S2 supervisor output 5V,
Switching between the LED warm colours temperature module 1 and the LED cool colours temperature module 2 is realized.It is real by the switch unit 4
Now LED drive power 3 realizes lighting in turn for the LED warm colours temperature module 1 and the cool colour temperature module 2 all the way, with cost
Low, small volume, circuit design be simple, and the advantages of there is no standby power consumption, wherein small volume can facilitate the various of LED lamp
Property design, circuit design can simply reduce circuit damage probability.
In another specific embodiment, the circuit of the switch unit 4 refers to Fig. 3, is shown as the switching list of the present invention
Unit's circuit theory diagrams in one embodiment, the switch unit by optocoupler OP1, OP2, resistance R7, R8, R9, R10,
R11, R12, and PNP triode Q5, Q6 composition, wherein, one end of the resistance R7 is connected with the pin S1 of described control unit
Connect, the other end of the resistance R7 is connected with the anode of the optocoupler OP1 former limit light emitting diodes, the optocoupler OP1 former limits are sent out
The minus earth of optical diode, the emitter stage of the optocoupler OP1 secondary phototriodes and the input of the LED drive power
In succession, the colelctor electrode of the optocoupler OP1 secondary phototriodes is connected with one end of the resistance R8, and the resistance R8's is another
End is connected with one end of the resistance R9 and the base stage of PNP triode Q5, the other end and the LED of the resistance R9
The outfan of driving power supply and PNP triode Q5 emitter stage connection, the colelctor electrode of PNP triode Q5 with it is described
LED warm colour temperature module connects；One end of the resistance R10 is connected with the pin S2 of described control unit, and the resistance R10's is another
One end, is connected with the anode of the optocoupler OP2 former limit light emitting diodes, and the negative electrode of the optocoupler OP2 former limit light emitting diodes connects
Ground, the emitter stage of the optocoupler OP2 secondary phototriodes with the input of the LED drive power in succession, the optocoupler OP2
The colelctor electrode of secondary phototriode is connected with one end of the resistance R11, the other end and the resistance of the resistance R11
The base stage connection of one end of R12 and PNP triode Q6, the other end and the LED drive power of the resistance R12
The emitter stage connection of outfan and PNP triode Q6, the colelctor electrode of PNP triode Q6 and the LED cool colours temperature
Module connects.Preferably, the resistance of described resistance R7, R9, R10, R12 is 100k, and the resistance of described resistance R8, R11 is
4.7k。
For example, when user presses " warm colour temperature " button of the IR remote controller, described control unit 5 can be to described
LED drive power 3 is input into the PWM dim signal corresponding with the warm color temperature mode of preset in advance, is flowed through with control described
The size of the electric current of LED warm colour temperature module 1, that is, control the luminosity of the LED warm colours temperature module 1, such as suitable life on daytime,
The luminosity of the LED cool colour temperature module 1 lighted during work is suitably adjusted to higher brightness, and while 5 meeting of described control unit
The anode of the pwm signal to the optocoupler OP1 former limit light emitting diodes of 5V is exported to S1 pins, the optocoupler OP1 former limits light
Diode is switched on, and emits beam, and the optocoupler OP1 secondary phototriode is turned on by light irradiation, i.e. closing equivalent to switch
Close, and the base stage of PNP triode Q5 has electric current, then the conducting of PNP triode Q5, that is, connect the LED warm colours temperature module 1
Load circuit is switched on, and the corresponding LED warm colours temperature module 1 of this switching circuit starts normal work, in the same manner, when user presses
During " cool colour temperature " button of the IR remote controller, described control unit 5 can be input into preset in advance to the LED drive power 3
The PWM dim signal corresponding with the cold color temperature mode, with control flow through the LED cool colours temperature module 2 electric current it is big
It is little, that is, the luminosity of the LED cool colours temperature module 2 is controlled, and while described control unit 5 disciplines output 5V's to the S2
Pwm signal starts normal work, that is, realizes the LED warm colours temperature to NPN triode Q6, the LED cool colours temperature module 2
Switching between module 1 and the LED cool colours temperature module 2.
Only exemplary two kinds of circuit implementations for enumerating the switch unit 4, are not limited thereto, Ke Yili herein
Solution, realizes that the circuit of switch unit of the present invention 4 is also various, does not repeat one by one herein.
In sum, a kind of LED power switching circuit proposed by the present invention, using Switching power, realizes that a paths of LEDs drives
Power supply at least realizes two kinds of different outputs, so as to control lighting in turn at least two groups of LED modules, realizes different going out light efficiency
Really, have the advantages that low cost, small volume, circuit design are simple, and there is no standby power consumption.So, the present invention effectively overcomes
Various shortcoming of the prior art and have high industrial utilization.
The principle and its effect of above-described embodiment only illustrative present invention, it is of the invention not for limiting.It is any ripe
The personage for knowing this technology all can carry out modifications and changes to above-described embodiment under the spirit and the scope without prejudice to the present invention.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (6)
1. a kind of LED power switching circuit, is applied at least include the light modulation of LED warm colour temperature modules and LED cool colour temperature modules
In circuit, it is characterised in that include：
LED drive power, its input connect the AC or DC power of outside input, and the positive pole of its outfan is with side in parallel
Formula connects the LED warm colours temperature module and the LED cool colours temperature module respectively；
Switch unit, connects the negative pole and the LED warm colours temperature module and the LED of the outfan of the LED drive power
Cool colour temperature module, the LED warm colours temperature module and the LED cool colours temperature module are turned on when switching signal is received wherein
One power circuit；
Control unit, connects the LED drive power and the switch unit, for believing to the switch unit output switching
Number while, matching PWM dim signal is exported to the LED drive power according to the attribute of the switching signal, with
Change driving voltage or electricity that the LED drive power is exported to the LED warm colours temperature module or the LED cool colours temperature module
Stream；
Wherein, the switch unit is by resistance R1, R2, R3, R4, R5, R6, NPN triode Q1, Q3, and PNP triode Q2,
Q4 is constituted, wherein, one end of the resistance R1 is connected with the pin S1 of described control unit, the other end of the resistance R1 and institute
State NPN triode Q1 base stage connection, the grounded emitter of the NPN triode Q1, the colelctor electrode of the NPN triode Q1 with
One end connection of the resistance R2, one end and the PNP triodes Q2 of the other end of the resistance R2 and the resistance R3
Base stage connection, the other end of the resistance R3 and the input of the LED drive power and the PNP triodes Q2's sends out
Emitter-base bandgap grading connects, and the colelctor electrode of the PNP triodes Q2 is connected with the LED warm colours temperature module；One end of the resistance R4 and institute
The pin S2 connections of control unit are stated, the other end of the resistance R4 is connected with the base stage of NPN triode Q3, the NPN
The grounded emitter of audion Q3, the colelctor electrode of NPN triode Q3 are connected with one end of the resistance R5, the resistance R5
The other end be connected with one end of the resistance R6 and the base stage of the PNP triodes Q4, the other end of the resistance R6 with
The emitter stage connection of the input of the LED drive power and the PNP triodes Q4, the current collection of the PNP triodes Q4
Pole is connected with the LED cool colours temperature module；
Or the switch unit is by optocoupler OP1, OP2, resistance R7, R8, R9, R10, R11, R12, and PNP triode Q5, Q6 group
Into, wherein, one end of the resistance R7 is connected with the pin S1 of described control unit, the other end and the light of the resistance R7
The anode connection of coupling OP1 former limit light emitting diodes, the minus earth of the optocoupler OP1 former limit light emitting diodes, the optocoupler OP1
The input of the emitter stage of secondary phototriode and the LED drive power in succession, the optocoupler OP1 secondary phototriodes
Colelctor electrode be connected with one end of the resistance R8, the other end of the resistance R8 and one end of the resistance R9 and described
The base stage connection of PNP triode Q5, the other end of the resistance R9 and the outfan of the LED drive power and the PNP
The emitter stage connection of audion Q5, the colelctor electrode of PNP triode Q5 are connected with the LED warm colours temperature module；The resistance
One end of R10 is connected with the pin S2 of described control unit, the other end of the resistance R10, luminous with the optocoupler OP2 former limits
The anode connection of diode, the minus earth of the optocoupler OP2 former limit light emitting diodes, photosensitive three pole of the optocoupler OP2 secondary
The input of the emitter stage of pipe and the LED drive power in succession, the colelctor electrode of the optocoupler OP2 secondary phototriodes and institute
State one end connection of resistance R11, one end and PNP triode Q6 of the other end of the resistance R11 and the resistance R12
Base stage connection, the other end of the resistance R12 and the outfan of the LED drive power and PNP triode Q6
Emitter stage connects, and the colelctor electrode of PNP triode Q6 is connected with the LED cool colours temperature module.
2. LED power switching circuit according to claim 1, it is characterised in that：Described control unit is according to infrared remote control
The infrared control signal that device sends, provides switching signal for the switch unit and provides described for the LED drive power
PWM dim signals.
3. LED power switching circuit according to claim 2, it is characterised in that：The IR remote controller is provided with cool colour
Gentle warm colour temperature selection key.
4. LED power switching circuit according to claim 1, it is characterised in that：Described control unit is single-chip microcomputer.
5. LED power switching circuit according to claim 1, it is characterised in that：Going out for the LED warm colours temperature module is photochromic
Temperature is 2000k～3300k.
6. LED power switching circuit according to claim 1, it is characterised in that：Going out for the LED cool colours temperature module is photochromic
Temperature is 6000k～7000k.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410391911.1A CN104113972B (en) | 2014-08-11 | 2014-08-11 | LED power switching circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410391911.1A CN104113972B (en) | 2014-08-11 | 2014-08-11 | LED power switching circuit |
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|---|---|
| CN104113972A CN104113972A (en) | 2014-10-22 |
| CN104113972B true CN104113972B (en) | 2017-04-05 |
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| CN201410391911.1A Active CN104113972B (en) | 2014-08-11 | 2014-08-11 | LED power switching circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430803A (en) * | 2015-12-20 | 2016-03-23 | 合肥艾斯克光电科技有限责任公司 | LED power supply switching circuit |
| CN108337762B (en) * | 2017-01-20 | 2022-06-24 | 松下知识产权经营株式会社 | Control circuit and LED lighting device |
| CN106973467B (en) * | 2017-05-24 | 2019-01-25 | 厦门益光照明科技股份有限公司 | A kind of manual power switching module of LED control device |
| CN107222959B (en) * | 2017-06-09 | 2019-06-25 | 吉利汽车研究院（宁波）有限公司 | Vehicle impact test lighting system |
| CN107682961B (en) * | 2017-10-20 | 2023-12-05 | 深圳协鑫智慧能源有限公司 | LED fishing lamp power output switching circuit |
| CN113853042A (en) * | 2020-06-28 | 2021-12-28 | 鸣志电器(太仓)有限公司 | LED color temperature adjusting circuit capable of effectively preventing current overshoot |
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| CN203336405U (en) * | 2013-05-20 | 2013-12-11 | 刘亮华 | LED spotlight |
| CN203363818U (en) * | 2013-07-17 | 2013-12-25 | 曹妍 | Color-changing lamp |
| CN203453847U (en) * | 2013-08-28 | 2014-02-26 | 四川海金汇光电有限公司 | LED (Light Emitting Diode) street lamp capable of converting cool color and warm color |
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