CN106211486A - A kind of LED lamp and light modulation toning circuit thereof - Google Patents
A kind of LED lamp and light modulation toning circuit thereof Download PDFInfo
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- CN106211486A CN106211486A CN201610798715.5A CN201610798715A CN106211486A CN 106211486 A CN106211486 A CN 106211486A CN 201610798715 A CN201610798715 A CN 201610798715A CN 106211486 A CN106211486 A CN 106211486A
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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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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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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]
- H05B45/20—Controlling the colour of the light
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Abstract
The invention belongs to LED actuation techniques field, it is provided that a kind of LED lamp and light modulation toning circuit thereof.nullIn the present invention，Reverse-blocking tetrode thyristor module is included by employing、The LED light modulation toning circuit of rectification module and at least one LED light modulation toning module，LED light modulation toning module includes partial pressure unit、LED luminescence unit and switch element，The voltage that alternating current power supply is exported by reverse-blocking tetrode thyristor module carries out with electric current exporting corresponding cut electric current after cut with cut voltage to rectification module，Rectification module exports to LED luminescence unit and partial pressure unit after cut electric current and cut voltage are carried out rectification，Partial pressure unit exports to switch element after the cut voltage after rectification is carried out dividing potential drop，Switch element carries out luminescence according under the cut function of current after rectification of the cut Control of Voltage LED luminescence unit after dividing potential drop according to corresponding bright and colourity，Solve the existence of existing LED illumination source and can not carry out brightness regulation and the problem of colourity regulation simultaneously.
Description
Technical field
The invention belongs to LED actuation techniques field, particularly relate to a kind of LED lamp and light modulation toning circuit thereof.
Background technology
In recent years, LED substitutes traditional electric filament lamp and is widely used as mains lighting supply, and along with people
The raising that LED illumination source is required and the development of LED technology, Dimmable LED light source arises at the historic moment, but, existing LED
The linear constant current of light source drives thyristor regulating optical circuit to be merely able to realize monochromatic regulation brightness, and can not carry out colourity regulation and answer
With.
In sum, the existence of existing LED illumination source can not carry out brightness regulation and the problem of colourity regulation simultaneously.
Summary of the invention
It is an object of the invention to provide a kind of LED lamp and light modulation toning circuit thereof, it is intended to solve existing LED illumination
Source exists can not carry out brightness regulation and the problem of colourity regulation simultaneously.
The present invention is achieved in that a kind of LED light modulation toning circuit, including reverse-blocking tetrode thyristor module and rectification module,
The input of described reverse-blocking tetrode thyristor module is connected with the first end of outside alternating current power supply, described reverse-blocking tetrode thyristor module defeated
Go out end to be connected with the first input end of described rectification module, the of the second input of described rectification module and described alternating current power supply
Two ends connect, the earth terminal ground connection of described rectification module, and described LED light modulation toning circuit also includes that at least one LED light modulation is adjusted
Color module, described LED light modulation toning module includes partial pressure unit, LED luminescence unit and switch element；
The input of described LED light modulation toning module is connected with the outfan of described rectification module, and described LED dims toning
The output head grounding of module, the input of described partial pressure unit meets the described LED of formation altogether with the input of described LED luminescence unit
The input of light modulation toning module, the first outfan of described LED luminescence unit connects with the first input end of described switch element
Connecing, the second outfan of described LED luminescence unit is connected with the second input of described switch element, the of described partial pressure unit
One outfan is connected with the control end of described switch element, and the outfan of described switch element is defeated with the second of described partial pressure unit
Go out end and connect the outfan forming described LED light modulation toning module altogether；
It is corresponding that the voltage that described alternating current power supply is exported by described reverse-blocking tetrode thyristor module carries out output after cut with electric current
Cut electric current and cut voltage to described rectification module, described cut electric current is carried out by described rectification module with described cut voltage
After rectification, output is to described LED luminescence unit and described partial pressure unit, and the cut voltage after rectification is carried out by described partial pressure unit
After dividing potential drop, output is to described switch element, and described switch element is according to LED luminescence unit described in the cut Control of Voltage after dividing potential drop
Luminescence is carried out according to corresponding bright and colourity under the cut function of current after rectification.
Another object of the present invention also resides in a kind of LED lamp of offer, and described LED lamp includes that above-mentioned LED light modulation is adjusted
Color circuit.
In the present invention, reverse-blocking tetrode thyristor module, rectification module and at least one LED light modulation toning are included by employing
The LED light modulation toning circuit of module, wherein, LED light modulation toning module includes that partial pressure unit, LED luminescence unit and switch are single
Unit, the voltage that alternating current power supply is exported by reverse-blocking tetrode thyristor module carries out with electric current exporting corresponding cut electric current and cut after cut
Voltage exports to LED luminescence unit and dividing potential drop after cut electric current and cut voltage are carried out rectification to rectification module, rectification module
Unit, partial pressure unit exports to switch element after the cut voltage after rectification is carried out dividing potential drop, after switch element is according to dividing potential drop
According to corresponding bright and colourity luminescence under the cut Control of Voltage LED luminescence unit cut function of current after rectification, it is achieved LED
The toning of luminescence unit and light modulation, so solve existing LED illumination source exist can not carry out brightness regulation and colourity simultaneously
The problem of regulation.
Accompanying drawing explanation
Fig. 1 is the modular structure schematic diagram of the LED light modulation toning circuit that one embodiment of the invention is provided；
Fig. 2 is the modular structure schematic diagram of the LED light modulation toning circuit that another embodiment of the present invention is provided；
Fig. 3 is the electrical block diagram of the LED light modulation toning circuit that one embodiment of the invention is provided.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
Below in conjunction with concrete accompanying drawing, the realization of the present invention is described in detail:
As it is shown in figure 1, the LED light modulation toning circuit 1 that the embodiment of the present invention is provided include reverse-blocking tetrode thyristor module 10 with
Rectification module 11, the input of reverse-blocking tetrode thyristor module 10 is connected with the first end of outside alternating current power supply (not shown),
The outfan of reverse-blocking tetrode thyristor module 10 is connected with the first input end of rectification module 11, the second input of rectification module 11 with
Second end of alternating current power supply connects, the earth terminal ground connection of rectification module 11, and LED light modulation toning circuit 1 also includes at least one LED
Light modulation toning module 12, LED light modulation toning module 12 includes partial pressure unit 120, LED luminescence unit 121 and switch element
122。
Wherein, the input of LED light modulation toning module 12 is connected with the outfan of rectification module 11, LED light modulation toning mould
The output head grounding of block 12, the input of partial pressure unit 120 connects formation LED light modulation tune altogether with the input of LED luminescence unit 121
The input of color module 12, the first outfan of LED luminescence unit 121 is connected with the first input end of switch element 122, LED
Second outfan of luminescence unit 121 is connected with the second input of switch element 122, the first outfan of partial pressure unit 120
Being connected with the control end of switch element 122, the outfan of switch element 122 connects shape altogether with the second outfan of partial pressure unit 120
Become the outfan of LED light modulation toning module 12.
Concrete, it is corresponding that voltage that alternating current power supply export by reverse-blocking tetrode thyristor module 10 carries out output after cut with electric current
Cut electric current and cut voltage to rectification module 11, rectification module 11 export after cut electric current and cut voltage are carried out rectification to
LED luminescence unit 121 and partial pressure unit 120, partial pressure unit 120 carries out output extremely switch after dividing potential drop to the cut voltage after rectification
Unit 122, switch element 122 is made according to the cut electric current after rectification of the cut Control of Voltage LED luminescence unit 121 after dividing potential drop
Luminescence is carried out according to corresponding bright and colourity under with.
Further, as one embodiment of the present invention, as in figure 2 it is shown, switch element 122 includes switching subelement
122a and light modulation toning subelement 122b.
Wherein, switch subelement 122a controls the control end that end is switch element 122, switchs the input of subelement 122a
The first outfan with light modulation toning subelement 122b is held to be connected, first outfan of switch subelement 122a and light modulation toning
Second outfan of unit 122b connects, the outfan that the second outfan is switch element 122 of switch subelement 122a, light modulation
The first input end that first input end is switch element 122 of toning subelement 122b, the second of light modulation toning subelement 122b
Input is the second input of switch element 122, the earth terminal ground connection of light modulation toning subelement 122b.
Concrete, when reverse-blocking tetrode thyristor module 10 not cut, switch subelement 122a exports according to partial pressure unit 120
Branch pressure voltage enters the first duty, and controls signal to light modulation toning subelement according to the first duty output first
122b, light modulation toning subelement 122b control LED luminescence unit 121 according to the first control signal and enter according to corresponding bright and colourity
Row luminescence.
When reverse-blocking tetrode thyristor module 10 carries out the first angle cut, subelement 122a is defeated according to partial pressure unit 120 for switch
Cut voltage after the dividing potential drop gone out enters the second duty, and controls signal to light modulation according to the second duty output second
Toning subelement 122b, light modulation toning subelement 122b control LED luminescence unit 121 according to the brightest according to the second control signal
Degree and colourity carry out luminescence.
When reverse-blocking tetrode thyristor module 10 carries out the second angle cut, subelement 122a is defeated according to partial pressure unit 120 for switch
Cut voltage after the dividing potential drop gone out enters the 3rd duty, and controls signal to light modulation according to the 3rd duty output the 3rd
Toning subelement 122b, light modulation toning subelement 122b control LED luminescence unit 121 according to the brightest according to the 3rd control signal
Degree and colourity carry out luminescence.
It should be noted that in the present embodiment, reverse-blocking tetrode thyristor module 10 is realized by reverse-blocking tetrode thyristor, and controllable silicon is opened
Closing module 10 to carry out the first angle cut and refer to reverse-blocking tetrode thyristor and cut 50% phase place, reverse-blocking tetrode thyristor module 10 carries out second jiao
Degree cut refers to reverse-blocking tetrode thyristor and is switched to the first little phase angle, it is preferred that this first little phase angle can be 20% phase place, is worth note
Meaning, when reverse-blocking tetrode thyristor is switched to this first little phase angle, the cut voltage of this reverse-blocking tetrode thyristor output have to be larger than LED
The conducting voltage of luminescence unit 121.
Further, as one embodiment of the present invention, as it is shown on figure 3, switch subelement 122a includes switch element
Q1, the first resistance R1 and the first electric capacity C1.
Wherein, switch element Q1 controls the control end that end is switch subelement 122a, and the input of switch element Q1 is
The input of switch subelement 122a, it is single that the outfan of switch element Q1 and first end of the first resistance R1 connect formation switch altogether
First outfan of unit 122a, second end of the first resistance R1 and second end of the first electric capacity C1 connect formation switch subelement altogether
Second outfan of 122a, first end of the first electric capacity C1 is connected with the low-voltage end of light modulation toning subelement 122b.
It should be noted that in the present embodiment, switch element Q1 is N-type transistor, and the grid of this N-type transistor is for being somebody's turn to do
The control end of switch element Q1, the input that drain electrode is this switch element Q1 of this N-type transistor, the source electrode of this N-type transistor
Outfan for this switch element Q1.
Further, as one embodiment of the present invention, as it is shown on figure 3, light modulation toning subelement 122b includes light modulation
First pin 1 of toning chip U1, light modulation toning chip U1 and the 5th pin 5 are respectively the second of light modulation toning subelement 122b
Input and first input end, the 3rd pin 3 of light modulation toning chip U1 and the 4th pin 4 are respectively light modulation toning subelement
Second outfan of 122b and the first outfan, the 9th pin 9 of light modulation toning chip U1 is for light modulation toning subelement 122b's
Earth terminal, the low-voltage end that the second pin 2 is light modulation toning subelement 122b of light modulation toning chip U1；It should be noted that
In the present embodiment, the bottom legs of light modulation toning chip U1 is the 9th pin 9 of light modulation toning chip U1
Further, as the present invention one preferred implementation, as it is shown on figure 3, LED light modulation toning circuit 1 also includes electricity
Stream maintains module 13, and electric current maintains the input of module 13 to be connected with rectification module 11 outfan, and electric current maintains the defeated of module 13
Go out end to be connected with first outfan of switch subelement 122a；
When reverse-blocking tetrode thyristor module 10 switch to third angle so that rectification module 11 output rectification after cut voltage
During less than the conducting voltage of LED luminescence unit 121, electric current maintains module 13 and reverse-blocking tetrode thyristor module 10 to form path, in case
During only reverse-blocking tetrode thyristor is opened and regulated, there is scintillation in LED luminescence unit 121；It should be noted that in this enforcement
In example, reverse-blocking tetrode thyristor module 10 switches to third angle and refers to reverse-blocking tetrode thyristor and be switched to the second little phase angle, and this is second little
Phase angle is less than the first little phase angle, it is preferred that this second little phase angle can be 10% phase place, it is notable that work as reverse-blocking tetrode thyristor
When being switched to this second little phase angle, the cut voltage of this reverse-blocking tetrode thyristor output is less than the conducting voltage of LED luminescence unit 121.
Further, as the present invention one preferred implementation, as it is shown on figure 3, electric current maintains module 13 to include that electric current is tieed up
Holding chip U2, the 6th resistance R6 and the 7th resistance R7, first end of the 6th resistance R6 is the input that electric current maintains module 13,
Second end of the 6th resistance R6 maintains first pin 1 of chip U2 to be connected with electric current, and first end of the 7th resistance R7 is tieed up with electric current
The 3rd pin 3 holding chip U2 connects, and second end of the 7th resistance R7 is the outfan that electric current maintains module 13, and electric current maintains core
Second pin 2 ground connection of sheet U2.
Further, as the present invention one preferred implementation, as it is shown on figure 3, partial pressure unit 120 includes the second resistance
R2, the 3rd resistance R3 and the second electric capacity C2.
Wherein, the input that the first end is partial pressure unit 120 of the second resistance R2, second end of the second resistance R2, the 3rd
First end of resistance R3 and first end of the second electric capacity C2 connect the first outfan forming partial pressure unit 120, the 3rd resistance altogether
Second end of R3 and second end of the second electric capacity C2 connect the second outfan forming partial pressure unit 120 altogether.
Further, as the present invention one preferred implementation, as in figure 2 it is shown, LED luminescence unit 121 includes a LED
Luminous subelement 121a and the 2nd LED luminescence subelement 121b, the input of a LED luminescence subelement 121a and the 2nd LED
The input of luminous subelement 121b forms the input of LED luminescence unit 121, the output of a LED luminescence subelement 121a
End is the first outfan of LED luminescence unit 121, and the outfan of the 2nd LED luminescence subelement 121b is LED luminescence unit 121
The second outfan.
Further, as the present invention one preferred implementation, as it is shown on figure 3, a LED luminescence subelement 121a includes
At least one first light emitting diode D1, when a LED luminescence subelement 121a includes a first light emitting diode D1, the
The anode of one light-emitting diodes D1 pipe is the input of the first emitting led subelement 121a, and the negative electrode of the first light emitting diode D1 is
The outfan of the first emitting led subelement 121a；When a LED luminescence subelement 121a includes multiple first light emitting diode D1
Time, multiple first light emitting diode D1 series connection, the anode of first the first light emitting diode D1 is a LED luminescence subelement
The input of 121a, the negative electrode of last the first light emitting diode D1 is the outfan of a LED luminescence subelement 121a.
Refer to it is noted that in the present embodiment, when a LED luminescence subelement 121a includes multiple first light-emitting diodes
During pipe D1, multiple first light emitting diode D1 can also use parallel way to connect, and does not limits.
2nd LED luminescence subelement 121b includes at least one second light emitting diode D2, when the 2nd LED luminescence subelement
When 121b includes a second light emitting diode D2, the anode of the second light emitting diode D2 is the second emitting led subelement 121b
Input, the negative electrode of the second light emitting diode D2 is the outfan of the second emitting led subelement 121b；When the 2nd LED is luminous
When subelement 121b includes multiple second light emitting diode D2, multiple second light emitting diode D2 series connection, first second luminous
The anode of diode D2 is the input of the 2nd LED luminescence subelement 121b, the negative electrode of last the second light emitting diode D2
It it is the outfan of the 2nd LED luminescence subelement 121b.
It should be noted that when the 2nd LED luminescence subelement 121b includes multiple second light emitting diode D2, Duo Ge
Two light emitting diode D2 can also use parallel way to connect, and does not limits.
Furthermore, it is necessary to explanation, in the present embodiment, the first luminous subelement 121a luminescence, the second luminescence unit
121b sends out warm light, and at least one the first light emitting diode D1 in the i.e. first luminous subelement 121a is the luminescence two emitted white light
Pole is managed, and at least one the second diode D2 in the second luminous subelement 121b is the light emitting diode of Yellow light-emitting low temperature；Additionally, value
Obtaining it is noted that in other embodiments, at least one the first light emitting diode D1 in the first luminous subelement 121a also may be used
All to glow, at least one the second light emitting diode D2 in the second luminous subelement 121b can also whole green light；
Furthermore, at least one the first light emitting diode D1 in the first luminous subelement 121a can also be incomplete same, i.e. part the
One light emitting diode D1 glows, part the first light emitting diode D1 blue light-emitting, at least in the second luminous subelement 121b
Individual second light emitting diode D2 can also be incomplete same, i.e. part the second light emitting diode D2 blue light-emitting, and part second is luminous
Diode D2 green light.
Further, as the present invention one preferred implementation, as in figure 2 it is shown, LED luminescence unit 121 also includes first
Filtering subelement 121c and second filtering subelement 121d.
Wherein, the first filtering input of subelement 121c, the input of a LED luminescence subelement 121a, the second filter
The input of marble unit 121d and the input of the 2nd LED luminescence subelement 121b connect altogether and form LED luminescence unit 121
Input, the outfan of the first filtering subelement 121c and the outfan of a LED luminescence subelement 121a meet formation LED altogether and send out
First outfan of light unit 121, the outfan of the second filtering subelement 121d and the output of the 2nd LED luminescence subelement 121b
End connects the second outfan forming LED luminescence unit 121 altogether.
Concrete, the first filtering subelement 121c is to flowing through the cut electricity after the rectification of a LED luminescence subelement 121a
Pressure and cut electric current are filtered processing；The second filtering subelement 121d rectification to flowing through the 2nd LED luminescence subelement 121b
After cut voltage and cut electric current be filtered processing.
Further, as the present invention one preferred implementation, as it is shown on figure 3, the first filtering subelement 121c includes the
Four resistance R4 and the 3rd electric capacity C3, the second filtering subelement 121d include the 5th resistance R5 and the 4th electric capacity C4.
Wherein, first end of the 4th resistance R4 and first end of the 3rd electric capacity C3 connect this first filtering subelement of formation altogether
The input of 121c, second end of the 4th resistance R4 and second end of the 3rd electric capacity C3 connect this first filtering subelement of formation altogether
The outfan of 121c；First end of the 5th resistance R5 and first end of the 4th electric capacity C4 connect this second filtering subelement of formation altogether
The input of 121d, second end of the 5th resistance R5 and second end of the 4th electric capacity C4 connect this second filtering subelement of formation altogether
The outfan of 121d.
Further, as the present invention one preferred implementation, as in figure 2 it is shown, the LED that the present invention implements to be provided is luminous
Unit 121 also includes separaant unit 121e.
Wherein, the input that input is LED luminescence unit 121 of separaant unit 121e, separaant unit 121e's
Outfan and the input of a LED luminescence subelement 121a, the input of the 2nd LED luminescence subelement 121b, the first filtering
The input of the input of subelement 121c and the second filtering subelement 121d connects.
Concrete, separaant unit 121e is single to the 3rd electric capacity C3 and second filtering in the first filtering subelement 121c
The 4th electric capacity C4 in unit 121d isolates, and to prevent the 3rd electric capacity C3 and the 4th electric capacity C4 from discharging, and then avoids because of the
The light-emitting flash that three electric capacity C3 and the 4th electric capacity C4 electric discharge causes.
Further, as the present invention one preferred implementation, as it is shown on figure 3, separaant unit 121e includes diode
The input that anode is separaant unit 121e of D3, this diode D3, the negative electrode of this diode D3 is separaant unit 121e
Outfan.
Further, as one embodiment of the present invention, as it is shown on figure 3, the LED light modulation that the embodiment of the present invention provides is adjusted
Color circuit 1 also includes that the 8th resistance R8, the 8th resistance R8 are connected between reverse-blocking tetrode thyristor and rectification module 11；Need explanation
It is that in the present embodiment, the 8th resistance R8 is for protecting reverse-blocking tetrode thyristor.
The operation principle of the LED light modulation toning circuit with the circuit structure shown in Fig. 3, the embodiment of the present invention provided below
Illustrating, details are as follows:
Firstly, it is necessary to explanation, only with a LED light modulation toning mould in the LED shown in Fig. 3 dims toning circuit 1
As a example by block 12, and the LED luminescence subelement 121a in the luminescence unit 121 in this LED light modulation toning module 12 turns white
Light, the 2nd LED luminescence subelement 121b Yellow light-emitting low temperature；Secondly, the light modulation toning chip U1 provided in the embodiment of the present invention has two
Individual current path, first current path is that electric current enters from the first pin 1, flows out from the 3rd pin 3, second current path
Enter from the 5th pin 5 for electric current, flow out from the 4th pin 4.
When reverse-blocking tetrode thyristor not cut, rectification module 11 is defeated after the voltage that alternating current power supply exports is carried out rectification with electric current
Go out to LED luminescence unit 121 and partial pressure unit 120；The second resistance R2 in partial pressure unit 120 and the 3rd resistance R3 is to rectification mould
The commutating voltage of block 11 output controls switch element Q1 after carrying out dividing potential drop and enters fully conducting state；LED luminescence unit 121 receives whole
After the commutating voltage of flow module output and rectified current, respectively by multiple first light emitting diode D1 and multiple second luminescences two
This rectified current is sent the first pin 1 and the 5th pin 5 to light modulation toning chip U1 by pole pipe D2, and then makes rectified current
The 3rd pin 3 and the 4th pin 4 of light modulation toning chip U1 is separately flowed into by the first pin 1 and the 5th pin 5.
After switch element Q1 enters fully conducting state, owing to the threshold value of the 4th pin 4 of light modulation toning chip U1 is more than
The threshold value of the 3rd pin 3 of light modulation toning chip U1, therefore, flows through multiple second in the 2nd LED luminescence subelement 121b
The magnitude of voltage of the electric current of optical diode D2 and the resistance product gained of the first resistance R1 is more than the threshold value of the 3rd pin 3, and then leads
Cause the path blockade between the first pin 1 and the 3rd pin 3 of light modulation toning chip U1, and dim the 5th of toning chip U1 and draw
Path conducting between foot 5 and the 4th pin 4, and then make the 2nd LED luminescence subelement 121b cannot form path, so that
Obtain the multiple second light emitting diode D2 in the 2nd LED luminescence subelement 121b the most luminous, and the first luminous subelement 121a, tune
5th pin 5 of light toning chip U1 and the 4th pin 4 and switch element Q1 form path, and then make a LED luminous
Multiple first light emitting diode D1 in subelement 121a are luminous, i.e. this light modulation toning circuit 1 emits white light.
When reverse-blocking tetrode thyristor switches to 50% phase angle, after the voltage after cut and electric current are carried out rectification by rectification module 11
Export to LED luminescence unit 121 and partial pressure unit 120；The second resistance R2 in partial pressure unit 120 and the 3rd resistance R3 is to rectification
Cut voltage after the rectification of module 11 output controls switch element Q1 after carrying out dividing potential drop and enters half conducting state；LED luminescence list
After unit 121 receives the cut voltage after the rectification of rectification module output and cut electric current, respectively by multiple first light-emitting diodes
Cut electric current after this rectification is sent the first pin 1 to light modulation toning chip U1 by pipe D1 and multiple second light emitting diode D2
With the 5th pin 5, and then make the cut electric current after rectification separately flow into light modulation by the first pin 1 and the 5th pin 5 to mix colours
3rd pin 3 and the 4th pin 4 of chip U1.
After switch element Q1 enters half conducting state, owing to flowing through the electric current of the 4th pin 4 of light modulation toning chip U1
Reduce, and then make to flow through the current value of electric current of the 4th pin 4 of light modulation toning chip U1 and the resistance of the first resistance R1 is taken advantage of
The threshold value of the magnitude of voltage of long-pending gained the 3rd pin 3 less than light modulation toning chip U1, therefore, the first of light modulation toning chip U1 is drawn
Path conducting between foot 1 and the 3rd pin 3, the path between the 5th pin 5 and the 4th pin 4 of light modulation toning chip U1 is led
Logical, and then make the multiple second light emitting diode D2 in the 2nd LED luminescence subelement 121b form path, so that second
Multiple second light emitting diode D2 in LED luminescence subelement 121b are luminous, and the first luminous subelement 121a, light modulation toning
5th pin 5 of chip U1 and the 4th pin 4 and switch element Q1 form path, and then make a LED luminescence subelement
Multiple first light emitting diode D1 in 121a are luminous, i.e. this light modulation toning circuit 1 emits white light and gold-tinted simultaneously.
When reverse-blocking tetrode thyristor switches to 20% phase angle, after the voltage after cut and electric current are carried out rectification by rectification module 11
Export to LED luminescence unit 121 and partial pressure unit 120；The second resistance R2 in partial pressure unit 120 and the 3rd resistance R3 is to rectification
Cut voltage after the rectification of module 11 output controls switch element Q1 after carrying out dividing potential drop and enters off-state；LED luminescence unit
After 121 receive the cut voltage after the rectifications that rectification module exports and cut electric current, respectively by multiple first light emitting diodes
D1 and multiple second light emitting diode D2 the cut electric current after this rectification is sent to light modulation toning chip U1 the first pin 1 with
5th pin 5, and then make the cut electric current after rectification separately flow into light modulation toning core by the first pin 1 and the 5th pin 5
3rd pin 3 and the 4th pin 4 of sheet U1.
After switch element Q1 enters off-state, between the first pin 1 and the 3rd pin 3 of light modulation toning chip U1
Path turns on, the path conducting between the 5th pin 5 and the 4th pin 4 of light modulation toning chip U1, and then the 2nd LED is sent out
Multiple second light emitting diode D2 in light subelement 121b form path, so that in the 2nd LED luminescence subelement 121b
Multiple second light emitting diode D2 luminous；And owing to switch element Q1 closes, therefore, the first luminous subelement 121a, light modulation
5th pin 5 of toning chip U1 and the 4th pin 4 and switch element Q1 cannot form path, and then a LED is sent out
Multiple first light emitting diode D1 in light subelement 121a are the most luminous, i.e. this light modulation toning circuit 1 Yellow light-emitting low temperature simultaneously.
When reverse-blocking tetrode thyristor moment switches to 10% phase angle or lower phase angle, due to the cut of reverse-blocking tetrode thyristor output
Voltage is less than the conducting voltage of each light emitting diode in LED luminescence unit 121, therefore, reverse-blocking tetrode thyristor, LED luminescence list
Unit 121 and light modulation toning chip U1 cannot form path, and then cause the current value flowing through reverse-blocking tetrode thyristor less than controllable silicon
The extinction current of switch, so that there is the scintillation of moment in LED luminescence unit 121, in order to prevent controllable silicon from opening
Pass does not reaches extinction current and makes LED luminescence unit 121 produce flicker, and electric current maintains chip U2 to start working, so that
Obtain the formed path of reverse-blocking tetrode thyristor, thus maintain the minimum current of reverse-blocking tetrode thyristor, prevent LED luminescence unit 121 from producing
Scintillation；And when reverse-blocking tetrode thyristor normally works, and when light modulation toning chip U1 normally works, owing to electric current maintains chip U2
The voltage threshold of the 3rd pin 3 less than light modulation toning chip U1 of the voltage threshold of the 3rd pin 3, therefore, electric current maintains core
Sheet U2 does not works, and does not produce power consumption, improves the efficiency of light modulation toning circuit 1.
Furthermore, it is necessary to explanation, in the present embodiment, when reverse-blocking tetrode thyristor switches to not inphase angle, flow through LED and send out
Multiple first light emitting diode D1 and the electric current of the second light emitting diode D2 in light unit 121 are different, i.e. flow through LED luminescence list
Multiple first light emitting diode D1 and the current duty cycle of the second light emitting diode D2 in unit 121 change, and then make
LED luminescence unit 121 sends the light of different brightness according to no electric current, thus realizes the light modulation of LED luminescence unit 121, with
Walk the color matching principle of aforesaid LED luminescence unit 121, the synchronization toning realizing LED luminescence unit 121 with this and light modulation.
Further, the embodiment of the present invention also provides for a kind of LED lamp, and this LED lamp includes above-mentioned LED light modulation toning
Circuit 1.
In the present invention, include that reverse-blocking tetrode thyristor module 10, rectification module 11 and at least one LED dim by employing
The LED light modulation toning circuit of toning module 12, wherein, LED light modulation toning module 12 includes partial pressure unit 120, LED luminescence unit
121 and switch element 122, the voltage that alternating current power supply is exported by reverse-blocking tetrode thyristor module 10 and electric current export phase after carrying out cut
The cut electric current answered and cut voltage are to rectification module 11, and rectification module 11 is defeated after cut electric current is carried out rectification with cut voltage
Go out to LED luminescence unit 121 and partial pressure unit 120, partial pressure unit 120 export after the cut voltage after rectification is carried out dividing potential drop to
Switch element 122, switch element 122 according to the cut Control of Voltage LED luminescence unit 121 after dividing potential drop after rectification cut electricity
Carry out luminescence according to corresponding bright and colourity under stream effect, it is achieved the toning of LED luminescence unit 121 and light modulation, and then solve
Existing LED illumination source exists can not carry out brightness regulation and the problem of colourity regulation simultaneously.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (12)
1. a LED light modulation toning circuit, including reverse-blocking tetrode thyristor module and rectification module, described reverse-blocking tetrode thyristor module defeated
Enter end to be connected with the first end of outside alternating current power supply, the of the outfan of described reverse-blocking tetrode thyristor module and described rectification module
One input connects, and the second input of described rectification module is connected with the second end of described alternating current power supply, described rectification module
Earth terminal ground connection, it is characterised in that described LED light modulation toning circuit also include at least one LED light modulation toning module, described
LED light modulation toning module includes partial pressure unit, LED luminescence unit and switch element；
The input of described LED light modulation toning module is connected with the outfan of described rectification module, described LED light modulation toning module
Output head grounding, the input of the input of described partial pressure unit and described LED luminescence unit connects formation described LED light modulation altogether
The input of toning module, the first outfan of described LED luminescence unit is connected with the first input end of described switch element, institute
Second input of the second outfan and described switch element of stating LED luminescence unit is connected, and the first of described partial pressure unit is defeated
Go out end to be connected with the control end of described switch element, the outfan of described switch element and the second outfan of described partial pressure unit
Connect the outfan forming described LED light modulation toning module altogether；
The voltage that described alternating current power supply is exported by described reverse-blocking tetrode thyristor module carries out exporting after cut corresponding cut with electric current
Electric current and cut voltage to described rectification module, described rectification module carries out rectification to described cut electric current and described cut voltage
Rear output is to described LED luminescence unit and described partial pressure unit, and described partial pressure unit carries out dividing potential drop to the cut voltage after rectification
Rear output to described switch element, described switch element according to LED luminescence unit described in the cut Control of Voltage after dividing potential drop whole
Luminescence is carried out according to corresponding bright and colourity under the cut function of current after stream.
LED the most according to claim 1 light modulation toning circuit, it is characterised in that it is single that described switch element includes switching son
Unit and light modulation toning subelement；
The control end that control end is described switch element of described switch subelement, the input of described switch subelement is with described
First outfan of light modulation toning subelement connects, the first outfan of described switch subelement and described light modulation toning subelement
Second outfan connect, the outfan that the second outfan is described switch element of described switch subelement, described light modulation adjust
The first input end of dice unit is the first input end of described switch element, the second input of described light modulation toning subelement
For the second input of described switch element, the earth terminal ground connection of described light modulation toning subelement；
When described reverse-blocking tetrode thyristor module not cut, the branch pressure voltage that described switch subelement exports according to described partial pressure unit
Enter the first duty, and control signal to described light modulation toning subelement according to described first duty output first,
Described light modulation toning subelement controls described LED luminescence unit according to described first control signal and enters according to corresponding bright and colourity
Row luminescence；
When described reverse-blocking tetrode thyristor module carries out the first angle cut, described switch subelement exports according to described partial pressure unit
Dividing potential drop after cut voltage enter the second duty, and control signal to institute according to described second duty output second
Stating light modulation toning subelement, described light modulation toning subelement controls described LED luminescence unit according to described second control signal and presses
Luminescence is carried out according to corresponding bright and colourity；
When described reverse-blocking tetrode thyristor module carries out the second angle cut, described switch subelement exports according to described partial pressure unit
Dividing potential drop after cut voltage enter the 3rd duty, and the 3rd control signal to institute according to described 3rd duty output
Stating light modulation toning subelement, described light modulation toning subelement controls described LED luminescence unit according to described 3rd control signal and presses
Luminescence is carried out according to corresponding bright and colourity.
LED the most according to claim 2 light modulation toning circuit, it is characterised in that described switch subelement includes switch unit
Part, the first resistance and the first electric capacity；
The end that controls of described switch element is the control end of described switch subelement, the input of described switch element be described in open
Closing the input of subelement, the outfan of described switch element and the first end of described first resistance connect formation described switch altogether
First outfan of unit, the second end of described first resistance and the second end of described first electric capacity connect formation described switch altogether
Second outfan of unit, the first end of described first electric capacity is connected with the low-voltage end of described light modulation toning subelement.
LED the most according to claim 3 light modulation toning circuit, it is characterised in that described light modulation toning subelement includes adjusting
Light toning chip, the first pin of described light modulation toning chip and the 5th pin are respectively the second of described light modulation toning subelement
Input and first input end, it is single that the 3rd pin of described light modulation toning chip and the 4th pin are respectively described light modulation toning
Second outfan of unit and the first outfan, the 9th pin of described light modulation toning chip is connecing of described light modulation toning subelement
Ground end, the second pin of described light modulation toning chip is the low-voltage end of described light modulation toning subelement.
5. dim toning circuit according to the LED described in claim 3 or 4, it is characterised in that described LED light modulation toning circuit is also
Maintaining module including electric current, described electric current maintains the input of module to be connected with described rectification module outfan, and described electric current is tieed up
First outfan of the outfan and described switch subelement of holding module is connected；
When described reverse-blocking tetrode thyristor module switch to third angle so that described rectification module output rectification after cut voltage
During less than the conducting voltage of described LED luminescence unit, described electric current maintains module to form path with described reverse-blocking tetrode thyristor module.
LED the most according to claim 5 light modulation toning circuit, it is characterised in that described electric current maintains module to include electric current
Maintaining chip, the 6th resistance and the 7th resistance, the first end of described 6th resistance is the input that described electric current maintains module,
Second end of described 6th resistance maintains the first pin of chip to be connected with described electric current, and described electric current maintains the 3rd of chip to draw
Foot is connected with the first end of described 7th resistance, and the second end of described 7th resistance is the outfan that described electric current maintains module,
Described electric current maintains the second pin ground connection of chip.
LED the most according to claim 1 light modulation toning circuit, it is characterised in that described partial pressure unit include the second resistance,
3rd resistance and the second electric capacity；
The input that first end is described partial pressure unit of described second resistance, the second end of described second resistance, the described 3rd
First end of resistance and the first end of described second electric capacity altogether connect formed described partial pressure unit the first outfan, the described 3rd
Second end of the second end of resistance and described second electric capacity connects the second outfan forming described partial pressure unit altogether.
LED the most according to claim 1 light modulation toning circuit, it is characterised in that described LED luminescence unit includes first
LED luminescence subelement and the 2nd LED luminescence subelement, the input of a described LED luminescence subelement is sent out with described 2nd LED
The input of light subelement forms the input of described LED luminescence unit, and the outfan of a described LED luminescence subelement is institute
Stating the first outfan of LED luminescence unit, the outfan of described 2nd LED luminescence subelement is the of described LED luminescence unit
Two outfans.
LED the most according to claim 8 light modulation toning circuit, it is characterised in that described LED luminescence unit also includes first
Filtering subelement and the second filtering subelement；
The described first filtering input of subelement, the input of a described LED luminescence subelement, described second filtering are single
The input of unit and the input of described 2nd LED luminescence subelement meet the input forming described LED luminescence unit, institute altogether
The outfan of the outfan and a described LED luminescence subelement of stating the first filtering subelement connects the described LED luminescence list of formation altogether
First outfan of unit, the described outfan of the second filtering subelement connects altogether with the outfan of described 2nd LED luminescence subelement
Form the second outfan of described LED luminescence unit；
Described first filtering subelement is to flowing through the cut voltage after the described rectification of a described LED luminescence subelement and cut
Electric current is filtered processing；After described second filtering subelement is to flowing through the described rectification of described 2nd LED luminescence subelement
Cut voltage and cut electric current are filtered processing.
LED the most according to claim 9 light modulation toning circuit, it is characterised in that described first filtering subelement includes the
Four resistance and the 3rd electric capacity, described second filtering subelement includes the 5th resistance and the 4th electric capacity；
First end of described 4th resistance connects altogether with the first end of described 3rd electric capacity and forms the defeated of described first filtering subelement
Entering end, the second end of described 4th resistance connects altogether with the second end of described 3rd electric capacity and forms the defeated of described first filtering subelement
Go out end；First end of described 5th resistance connects altogether with the first end of described 4th electric capacity and forms the defeated of described second filtering subelement
Entering end, the second end of described 5th resistance connects altogether with the second end of described 4th electric capacity and forms the defeated of described second filtering subelement
Go out end.
11. LED according to claim 10 light modulation toning circuit, it is characterised in that described LED luminescence unit also include every
Ion unit；
The input of described separaant unit is the input of described LED luminescence unit, the outfan of described separaant unit with
The input of a described LED luminescence subelement, the input of described 2nd LED luminescence subelement, described first filtering are single
The input of unit and the input of described second filtering subelement connect；
Described separaant unit is to the 3rd electric capacity in described first filtering subelement and the in described second filtering subelement
Four electric capacity are isolated.
12. 1 kinds of LED lamp, it is characterised in that described LED lamp also includes the LED as described in any one of claim 1 to 11
Light modulation toning circuit.
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| CN201610798715.5A CN106211486B (en) | 2016-08-31 | 2016-08-31 | A kind of LED lamp and its light modulation toning circuit |
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| CN201610798715.5A CN106211486B (en) | 2016-08-31 | 2016-08-31 | A kind of LED lamp and its light modulation toning circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014103078A (en) * | 2012-11-22 | 2014-06-05 | Gold King Kk | Led light dimming circuit for vehicle |
| CN104540287A (en) * | 2012-10-30 | 2015-04-22 | 四川新力光源股份有限公司 | LED dimming driving circuit |
| CN105657932A (en) * | 2014-12-04 | 2016-06-08 | 凹凸电子（武汉）有限公司 | Light source drive circuit and brightness and color temperature controller |
| CN105657909A (en) * | 2016-03-25 | 2016-06-08 | 深圳市明微电子股份有限公司 | Linear LED drive circuit capable of achieving light and color adjustment |
-
2016
- 2016-08-31 CN CN201610798715.5A patent/CN106211486B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540287A (en) * | 2012-10-30 | 2015-04-22 | 四川新力光源股份有限公司 | LED dimming driving circuit |
| JP2014103078A (en) * | 2012-11-22 | 2014-06-05 | Gold King Kk | Led light dimming circuit for vehicle |
| CN105657932A (en) * | 2014-12-04 | 2016-06-08 | 凹凸电子（武汉）有限公司 | Light source drive circuit and brightness and color temperature controller |
| CN105657909A (en) * | 2016-03-25 | 2016-06-08 | 深圳市明微电子股份有限公司 | Linear LED drive circuit capable of achieving light and color adjustment |
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