CN103152939A - Four-in-one light-dimming circuit of light-emitting diode (LED) power source - Google Patents
Four-in-one light-dimming circuit of light-emitting diode (LED) power source Download PDFInfo
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- CN103152939A CN103152939A CN2013100597183A CN201310059718A CN103152939A CN 103152939 A CN103152939 A CN 103152939A CN 2013100597183 A CN2013100597183 A CN 2013100597183A CN 201310059718 A CN201310059718 A CN 201310059718A CN 103152939 A CN103152939 A CN 103152939A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention discloses a four-in-one light-dimming circuit of a light-emitting diode (LED) power source. The circuit comprises an intelligent control circuit, a pulse width modulation (PWM) light-dimming port, a voltage distribution and linear correction circuit, a reference circuit, a stabilized voltage supply circuit, a resistance-capacitance filter circuit, a current amplification and voltage follower circuit and a light-dimming output control port; and the intelligent control circuit is unidirectionally connected with the PWM light-dimming port, the voltage distribution and linear correction circuit is connected with the light-dimming output control port through the resistance-capacitance filter circuit and the current amplification and voltage follower circuit, the stabilized voltage supply circuit is respectively connected with the light-dimming output control port and the reference circuit, and the reference circuit and the PWM light-dimming port are respectively and unidirectionally connected with the voltage distribution and linear correction circuit. Functions of variable resistance light dimming, 0-10V voltage light dimming and PWM light dimming are realized; and moreover, under the condition of being not connected with any external circuits, an intelligent light-dimming function is realized through modifying a programmable port, secondary energy saving of the LED power source is realized, and the integral efficiency is increased.
Description
Technical field
The invention belongs to LED illumination control field, relate to a kind of LED power supply four unification light adjusting circuits.
Background technology
In the last few years, LED uses more and more wider as the lighting source of new generation of green high-efficient, the LED luminous efficiency is high, energy consumption is low, the life-span is long, material is recyclable, do not pollute the environment, and have good dimming behavior, in order to build more comfortable lighting atmosphere and energy savings, the research of LED light regulating technology is seemed and important.Yet, existing LED power supply light modulation is all single a kind of dimming mode, the user can run into a lot of problems in installation and matching process, such as, must buy corresponding with it light modulation device, in use very inconvenient, can not satisfy people's application demand, thereby reduced selecting of client, affected LED power supply energy-saving effect.
Therefore, problem for above-mentioned prior art existence, be necessary to study in fact, so that the LED light adjusting circuit with power transformation resistance light modulation, the light modulation of 0-10V voltage, PWM dimming function and intelligent dimming function to be provided, and have characteristics simple in structure, that whole efficiency is high, easy to adjust, thereby realize LED power supply secondary energy-saving.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide the LED light adjusting circuit with power transformation resistance light modulation, the light modulation of 0-10V voltage, PWM dimming function and intelligent dimming function, and have characteristics simple in structure, that whole efficiency is high, easy to adjust, thereby realize LED power supply secondary energy-saving.
For achieving the above object, technical scheme of the present invention is:
a kind of LED power supply four unification light adjusting circuits, comprise intelligence control circuit, resistance voltage PWM light modulation port, dividing potential drop and linearity circuit, 2.5V reference circuit, voltage-stabilized power supply circuit, rc filter circuit, electric current amplifies and voltage follower circuit, light modulation output control terminal mouth, its described intelligence control circuit and resistance voltage unidirectional connection of PWM light modulation port, dividing potential drop and linearity circuit pass through rc filter circuit, electric current amplifies and voltage follower circuit is connected to light modulation output control terminal mouth, voltage-stabilized power supply circuit respectively with light modulation output control terminal mouth, 2.5V reference circuit connects, 2.5V reference circuit, resistance voltage PWM light modulation port unidirectional dividing potential drop and the linearity circuit of being connected to respectively.
Further, described intelligence control circuit comprises single-chip microcomputer, update routine port, PWM output driving circuit, the update routine port is connected to the PWM output driving circuit by single-chip microcomputer, thereby can modify to the single-chip microcomputer kernel by the update routine port, make the time control of single-chip microcomputer satisfy various application requirements.
Further, described PWM output driving circuit is provided with the one-level voltage amplification, satisfies light modulation and partly mates demand.
Further, described dividing potential drop and linearity circuit comprise resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, chip U2B, capacitor C 10, capacitor C 8, an end ground connection after resistance R 11 and capacitor C 8 series connection, the other end is connected to chip U2B the 5th pin; After resistance R 14 and resistance R 15 serial connections, one is terminated at chip U2B the 5th pin, and the other end is connected to the 7th pin; After resistance R 13 and capacitor C 10 are in parallel, one is terminated at chip U2B the 6th pin, and the other end is connected to the 7th pin; Resistance R 12 1 end ground connection, the other end is connected to chip U2B the 6th pin.
Further, described intelligence control circuit and resistance voltage be provided with switch S between PWM light modulation port, mainly realize the switching of Based Intelligent Control.
The advantage of LED power supply four unification light adjusting circuits of the present invention is: can realize power transformation resistance light modulation, the light modulation of 0-10V voltage, PWM dimming function, and need not under the condition of external any circuit, realize intelligent dimming function by the update routine port, realize LED power supply secondary energy-saving, improve whole efficient, brought into play greatly the LED power savings advantages.
Description of drawings
The structural representation of a kind of LED power supply four unification light adjusting circuits of Fig. 1 embodiment of the present invention.
The concrete implementing circuit figure of a kind of LED power supply four unification light adjusting circuits of Fig. 2 embodiment of the present invention.
The dividing potential drop of a kind of LED power supply four unification light adjusting circuits of Fig. 3 embodiment of the present invention and the concrete implementing circuit figure of linearity circuit.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
please refer to shown in Figure 1, a kind of LED power supply four unification light adjusting circuits, comprise intelligence control circuit, resistance voltage PWM light modulation port, dividing potential drop and linearity circuit, 2.5V reference circuit, voltage-stabilized power supply circuit, rc filter circuit, electric current amplifies and voltage follower circuit, light modulation output control terminal mouth, its described intelligence control circuit and resistance voltage unidirectional connection of PWM light modulation port, dividing potential drop and linearity circuit pass through rc filter circuit, electric current amplifies and voltage follower circuit is connected to light modulation output control terminal mouth, voltage-stabilized power supply circuit respectively with light modulation output control terminal mouth, 2.5V reference circuit connects, 2.5V reference circuit, resistance voltage PWM light modulation port unidirectional dividing potential drop and the linearity circuit of being connected to respectively.
Please refer to shown in Figure 2, the embodiment of the present invention is when the concrete enforcement of light adjusting circuit, intelligence control circuit comprises single-chip microcomputer, update routine port, PWM output driving circuit, the update routine port is connected to the PWM output driving circuit by single-chip microcomputer, when what light modulation device, can modify to the single-chip microcomputer kernel by the update routine port, make the time control of single-chip microcomputer satisfy various application requirements, and the PWM output driving circuit is provided with the one-level voltage amplification, can satisfy the demand that light modulation is partly mated.In addition intelligence control circuit and resistance voltage be provided with switch S between PWM light modulation port, can carry out as required the handover operation of Based Intelligent Control.
Please refer to shown in Figure 3, described dividing potential drop and linearity circuit comprise resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, chip U2B, capacitor C 10, capacitor C 8, an end ground connection after resistance R 11 and capacitor C 8 series connection, the other end is connected to chip U2B the 5th pin; After resistance R 14 and resistance R 15 serial connections, one is terminated at chip U2B the 5th pin, and the other end is connected to the 7th pin; After resistance R 13 and capacitor C 10 are in parallel, one is terminated at chip U2B the 6th pin, and the other end is connected to the 7th pin; Resistance R 12 1 end ground connection, the other end is connected to chip U2B the 6th pin.After energising, the signal of telecommunication of Dian Zu Dian Ya PWM light modulation port or the Based Intelligent Control signal of telecommunication obtain desired signal by dividing potential drop and linearity circuit, then consider successively the fine setting of ripple, voltage follow and output maximum current through capacitance-resistance, obtain the required signal of LED power supply light modulation, realize the light modulation of LED power supply.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a LED power supply four is unified light adjusting circuits, comprise intelligence control circuit, resistance voltage PWM light modulation port, dividing potential drop and linearity circuit, 2.5V reference circuit, voltage-stabilized power supply circuit, rc filter circuit, electric current amplifies and voltage follower circuit, light modulation output control terminal mouth, it is characterized in that: intelligence control circuit and resistance voltage unidirectional connection of PWM light modulation port, dividing potential drop and linearity circuit pass through rc filter circuit, electric current amplifies and voltage follower circuit is connected to light modulation output control terminal mouth, voltage-stabilized power supply circuit respectively with light modulation output control terminal mouth, 2.5V reference circuit connects, 2.5V reference circuit, resistance voltage PWM light modulation port unidirectional dividing potential drop and the linearity circuit of being connected to respectively.
2. LED power supply four as claimed in claim 1 is unified light adjusting circuits, it is characterized in that: described intelligence control circuit comprises single-chip microcomputer, update routine port, PWM output driving circuit, the update routine port is connected to the PWM output driving circuit by single-chip microcomputer, thereby can modify to the single-chip microcomputer kernel by the update routine port, make the time control of single-chip microcomputer satisfy various application requirements.
3. LED power supply four as claimed in claim 2 is unified light adjusting circuits, and it is characterized in that: described PWM output driving circuit is provided with the one-level voltage amplification, satisfies light modulation and partly mates demand.
4. LED power supply four as claimed in claim 3 is unified light adjusting circuits, it is characterized in that: described dividing potential drop and linearity circuit comprise resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, chip U2B, capacitor C 10, capacitor C 8, an end ground connection after resistance R 11 and capacitor C 8 series connection, the other end is connected to chip U2B the 5th pin; After resistance R 14 and resistance R 15 serial connections, one is terminated at chip U2B the 5th pin, and the other end is connected to the 7th pin; After resistance R 13 and capacitor C 10 are in parallel, one is terminated at chip U2B the 6th pin, and the other end is connected to the 7th pin; Resistance R 12 1 end ground connection, the other end is connected to chip U2B the 6th pin.
5. LED power supply as claimed in claim 4 four unification light adjusting circuits is characterized in that: described intelligence control circuit and resistance voltage be provided with switch S between PWM light modulation port, mainly realize the switching of Based Intelligent Control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310059718.3A CN103152939B (en) | 2013-02-26 | 2013-02-26 | A kind of LED power four-in-one light adjusting circuit |
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| CN201310059718.3A CN103152939B (en) | 2013-02-26 | 2013-02-26 | A kind of LED power four-in-one light adjusting circuit |
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| CN103152939A true CN103152939A (en) | 2013-06-12 |
| CN103152939B CN103152939B (en) | 2016-09-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470060A (en) * | 2014-10-20 | 2015-03-25 | 深圳市华星光电技术有限公司 | Analog dimming conversion circuit and display device |
| CN104837247A (en) * | 2015-05-07 | 2015-08-12 | 成都东旭节能科技有限公司 | Four-in-one LED power supply linear dimming control circuit |
| CN104994630A (en) * | 2015-06-19 | 2015-10-21 | 伊博电源（杭州）有限公司 | LED drive control method integrating multiple dimming modes |
| CN106658817A (en) * | 2016-09-30 | 2017-05-10 | 深圳市莱福德光电有限公司 | Dimming signal processing system applied to LED driving power supply |
| CN108112125A (en) * | 2017-12-28 | 2018-06-01 | 宁波龙源照明电器有限公司 | A kind of five in one light adjusting circuit and light-dimming method |
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| CN108112125B (en) * | 2017-12-28 | 2024-01-30 | 杨旭 | Five-in-one dimming circuit and dimming method |
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| CN103152939B (en) | 2016-09-07 |
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