CN104837247A - Four-in-one LED power supply linear dimming control circuit - Google Patents
Four-in-one LED power supply linear dimming control circuit Download PDFInfo
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- CN104837247A CN104837247A CN201510228545.2A CN201510228545A CN104837247A CN 104837247 A CN104837247 A CN 104837247A CN 201510228545 A CN201510228545 A CN 201510228545A CN 104837247 A CN104837247 A CN 104837247A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The invention discloses a four-in-one LED power supply linear dimming control circuit, and solves the problems of single function and inconvenient use as LED power supplies all adopts a single dimming mode in the prior art. The four-in-one LED power supply linear dimming control circuit comprises a voltage stabilizing power supply circuit, stabilizing DC power supply and outputs stabilized voltage; an intelligent control circuit, connected with the voltage stabilizing power supply circuit and used for receiving a stabilized voltage signal and outputting a PWM signal; a linear correction circuit, receiving the PWM signal outputted by the intelligent control circuit and outputting a corresponding voltage signal changing with the PWM duty ratio; a voltage amplification circuit, amplifying the voltage signal outputted by the linear correction circuit; an anti-reversing diode D1, used for outputting the amplified voltage signal by the voltage amplification circuit; and a voltage follower and resistance and voltage dimming input circuit, receiving the voltage signal outputted by the anti-reversing diode D1, and filter-outputting a corresponding linear control voltage signal to a dimming output control port after voltage following.
Description
Technical field
The present invention relates to a kind of adjusting control circuit, specifically, relate to a kind of four-in-one LED power linearity light adjusting control circuit.
Background technology
In the last few years, LED is more and more wider as the lighting source application of new generation of green high-efficient, LED luminous efficiency is high, energy ezpenditure is low, the life-span is long, material is recyclable, do not pollute the environment, and there is good dimming behavior, in order to build more comfortable lighting atmosphere and energy savings, the research of LED light regulating technology is seemed of crucial importance.But, existing LED power light modulation is all single a kind of dimming mode, user can run into a lot of problem in installation and matching process, such as must buy the light modulation device corresponded, in use very inconvenient, the application demand of people can not be met, thus decrease selecting of client, affect the energy-saving effect of LED power.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, provide a kind of structure simple, easy to adjust, the four-in-one LED power linearity light adjusting control circuit of resistance light modulation, the light modulation of 0-10V voltage, PWM dimming function and Intelligent fixed time dimming function can be realized.
To achieve these goals, the technical solution used in the present invention is as follows:
Unification LED power linearity light adjusting control circuit, comprising:
Voltage-stabilized power supply circuit, exports the voltage after voltage stabilizing by direct current supply voltage stabilizing;
Intelligent control circuit, is connected for receiving the voltage signal after voltage stabilizing and output pwm signal with voltage-stabilized power supply circuit;
Linear revise circuit, receives the pwm signal that intelligent control circuit exports and the corresponding analog voltage signal exported with PWM change in duty cycle;
Voltage amplifier circuit, amplifies the voltage signal that linear revise circuit exports;
Counnter attack diode D1, for exporting the voltage signal after voltage amplifier circuit amplifies;
Voltage follower and resistance, voltage dimming input circuit, receive the voltage signal exported via counnter attack diode D1, do voltage follow post filtering and export corresponding Linear Control voltage signal to light modulation output control terminal mouth.
Specifically, described voltage-stabilized power supply circuit is made up of electric capacity C7, electric capacity C8, voltage stabilizing circuit chip U3, electric capacity C4, electric capacity C5 and electric capacity C6; Wherein, electric capacity C7, electric capacity C8 parallel connection is also connected with voltage stabilizing circuit chip U3 input, and electric capacity C4, electric capacity C5, electric capacity C6 are in parallel to be also connected with voltage stabilizing circuit chip U3 output.
Specifically, described intelligent control circuit comprises single-chip microcomputer U1 and update routine port.
Specifically, described linear revise electricity routing resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C2 and electric capacity C3 form; Wherein, resistance R3, resistance R4, resistance R5 are in parallel, and the input of three connects the output of single-chip microcomputer U1, and electric capacity C2 and electric capacity C3 is in parallel, and resistance R6 is arranged between electric capacity C2 and electric capacity C3.
Specifically, described voltage amplifier circuit is made up of comparator U2B, resistance R7 and resistance R8; The in-phase end of comparator U2B is connected with resistance R6 electric capacity C3, and its end of oppisite phase is connected with one end of resistance R7 and resistance R8, and the other end of resistance R8 is connected with the output of comparator U2B.
Specifically, described voltage follower and resistance, voltage dimming input circuit are made up of comparator U2A, resistance R9, electric capacity C9, resistance R10; Wherein, resistance R9 one end connects the output of comparator U2B, described counnter attack diode D1 is arranged on therebetween, resistance R9 is connected the in-phase end of comparator U2A with one end of resistance R10, one end of electric capacity C9 is connected with the output of comparator U2A with the end of oppisite phase of comparator U2A, the other end ground connection of electric capacity C9.
In order to better realize the present invention, also comprise external PWM light modulation port.
Compared with prior art, the present invention has following beneficial effect:
Adopt the present invention can provide the Multifunctional LED light adjusting circuit with resistance light modulation, the light modulation of 0-10V voltage, PWM dimming function and Intelligent fixed time dimming function, and have the feature that structure is simple, whole efficiency is high, easy to adjust, thus realize LED power secondary energy-saving.
Accompanying drawing explanation
fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is system block diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
Present embodiments provide a kind of four-in-one LED power linearity light adjusting control circuit, it comprises voltage-stabilized power supply circuit, intelligent control circuit, linear revise circuit, voltage amplifier circuit, counnter attack diode D1, voltage follower and resistance, voltage dimming input circuit.Resistance light modulation, the light modulation of 0-10V voltage, PWM dimming function and Intelligent fixed time dimming function integrate by this circuit, efficiently solve the problem of single light modulation in prior art.
Voltage-stabilized power supply circuit is by direct current supply voltage stabilizing and export the voltage after voltage stabilizing, and specifically, voltage-stabilized power supply circuit is made up of electric capacity C7, electric capacity C8, voltage stabilizing circuit chip U3, electric capacity C4, electric capacity C5 and electric capacity C6; Wherein, electric capacity C7, electric capacity C8 parallel connection is also connected with voltage stabilizing circuit chip U3 input, and electric capacity C4, electric capacity C5, electric capacity C6 are in parallel to be also connected with voltage stabilizing circuit chip U3 output.Direct current supply sends into voltage-stabilized power supply circuit by J1 mouth, and J1 port is DC supply input, 1 pin for just, 2 pin for negative (), 3 pin are Linear Control voltage output end.
Intelligent control circuit, is connected for receiving the voltage signal after voltage stabilizing and output pwm signal with voltage-stabilized power supply circuit; Intelligent control circuit comprises single-chip microcomputer U1 and update routine port; Voltage after voltage stabilizing sends into single-chip microcomputer U1, and U1 obtains the good program output pwm signal of electric rear basis programming in advance.
Linear revise circuit, receives the pwm signal that intelligent control circuit exports and the corresponding analog voltage signal exported with PWM change in duty cycle; Linear revise electricity routing resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C2 and electric capacity C3 form; Wherein, resistance R3, resistance R4, resistance R5 are in parallel, and the input of three connects the output of single-chip microcomputer U1, and electric capacity C2 and electric capacity C3 is in parallel, and resistance R6 is arranged between electric capacity C2 and electric capacity C3.
The pwm signal that intelligent control circuit exports is input to the linear revise circuit sending into R5, R6, C2, C3 composition after resistance R4 holds current limliting, the voltage amplifier in-phase input end be made up of U2B, R8, R7 is sent into through revised signal, signal after amplifying is exported by the output pin of U2B, after D1 counnter attack, send into the voltage follower be made up of R9, U2A, C9, the control signal after following exports by U2A output pin 3 pin delivering to J1 after C9 filtering and exports.
Voltage amplifier circuit, amplifies the voltage signal that linear revise circuit exports; Voltage amplifier circuit is made up of comparator U2B, resistance R7 and resistance R8; The in-phase end of comparator U2B is connected with resistance R6 electric capacity C3, and its end of oppisite phase is connected with one end of resistance R7 and resistance R8, and the other end of resistance R8 is connected with the output of comparator U2B.
Counnter attack diode D1, is arranged between intelligent control circuit and resistance, voltage light modulation port, for exporting the voltage signal after voltage amplifier circuit amplifies.Counnter attack diode D1 mainly realizes the switching between Based Intelligent Control, PWM light modulation port and resistance, voltage light modulation port.
Voltage follower and resistance, voltage dimming input circuit, receive the voltage signal exported via counnter attack diode D1, do voltage follow post filtering and export corresponding Linear Control voltage signal to light modulation output control terminal mouth.Voltage follower and resistance, voltage dimming input circuit are made up of comparator U2A, resistance R9, electric capacity C9, resistance R10; Wherein, resistance R9 one end connects the output of comparator U2B, counnter attack diode D1 is arranged on therebetween, resistance R9 is connected the in-phase end of comparator U2A with one end of resistance R10, one end of electric capacity C9 is connected with the output of comparator U2A with the end of oppisite phase of comparator U2A, the other end ground connection of electric capacity C9.
In order to better realize the present embodiment, the present embodiment also includes external PWM light modulation port, the pwm signal of PWM light modulation port input is received by linear revise circuit and exports the corresponding analog voltage signal with PWM change in duty cycle, signal is input to after resistance R4 holds current limliting by 6 pin of J2 and sends into R5, R6, C2, the linear revise circuit of C3 composition, send into by U2B through revised signal, R8, the voltage amplifier in-phase input end of R7 composition, signal after amplifying is exported by the output pin of U2B, send into after D1 counnter attack by R9, U2A, the voltage follower of C9 composition, control signal after following exports by U2A output pin 3 pin delivering to J1 after C9 filtering and exports.
J2 port one-5 pin is program burn writing port, 6 pin are external PWM signal input, 7 pin are 0-10V and resistance light modulation input port, and wherein 1 pin is MCLR, 2 pin are that just (VCC), 3 pin are that direct current bears (GND), 4 pin are data input pin (DAT), 5 pin are clock input pin (CLK) to direct current.
The course of work of the present invention is as follows: direct current supply sends into by J1 mouth the voltage stabilizing circuit be made up of C7, C8, U3, C4, C5, C6, and the voltage after voltage stabilizing sends into single-chip microcomputer U1, and U1 obtains the good program output pwm signal of electric rear basis programming in advance; Through the pwm signal that U1 exports and PWM light modulation port inputs, the linear revise circuit be made up of R3, R4, R5, R6, C2, C3 exports the corresponding voltage with PWM change in duty cycle, export after D1 counnter attack after the voltage amplifier circuit through being made up of U2B, R7, R8 amplifies, the voltage follower be made up of U2A, R9, C9, R10 again and resistance, voltage dimming input circuit do voltage follow post filtering and export corresponding Linear Control voltage signal, realize LED power light modulation.
According to above-described embodiment, just the present invention can be realized well.What deserves to be explained is; under prerequisite based on above-mentioned design principle; for solving same technical problem; even if some making on architecture basics disclosed in this invention are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the present invention, therefore it also should in protection scope of the present invention.
Claims (7)
1. four-in-one LED power linearity light adjusting control circuit, is characterized in that, comprising:
Voltage-stabilized power supply circuit, exports the voltage after voltage stabilizing by direct current supply voltage stabilizing;
Intelligent control circuit, is connected for receiving the voltage signal after voltage stabilizing and output pwm signal with voltage-stabilized power supply circuit;
Linear revise circuit, receives the pwm signal that intelligent control circuit exports and the corresponding analog voltage signal exported with PWM change in duty cycle;
Voltage amplifier circuit, amplifies the voltage signal that linear revise circuit exports;
Counnter attack diode D1, for exporting the voltage signal after voltage amplifier circuit amplifies;
Voltage follower and resistance, voltage dimming input circuit, receive the voltage signal exported via counnter attack diode D1, do voltage follow post filtering and export corresponding Linear Control voltage signal to light modulation output control terminal mouth.
2. four-in-one LED power linearity light adjusting control circuit according to claim 1, is characterized in that, described voltage-stabilized power supply circuit is made up of electric capacity C7, electric capacity C8, voltage stabilizing circuit chip U3, electric capacity C4, electric capacity C5 and electric capacity C6; Wherein, electric capacity C7, electric capacity C8 parallel connection is also connected with voltage stabilizing circuit chip U3 input, and electric capacity C4, electric capacity C5, electric capacity C6 are in parallel to be also connected with voltage stabilizing circuit chip U3 output.
3. four-in-one LED power linearity light adjusting control circuit according to claim 1, it is characterized in that, described intelligent control circuit comprises single-chip microcomputer U1 and update routine port.
4. four-in-one LED power linearity light adjusting control circuit according to claim 3, is characterized in that, described linear revise electricity routing resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C2 and electric capacity C3 form; Wherein, resistance R3, resistance R4, resistance R5 are in parallel, and the input of three connects the output of single-chip microcomputer U1, and electric capacity C2 and electric capacity C3 is in parallel, and resistance R6 is arranged between electric capacity C2 and electric capacity C3.
5. four-in-one LED power linearity light adjusting control circuit according to claim 4, it is characterized in that, described voltage amplifier circuit is made up of comparator U2B, resistance R7 and resistance R8; The in-phase end of comparator U2B is connected with resistance R6 electric capacity C3, and its end of oppisite phase is connected with one end of resistance R7 and resistance R8, and the other end of resistance R8 is connected with the output of comparator U2B.
6. four-in-one LED power linearity light adjusting control circuit according to claim 5, is characterized in that, described voltage follower and resistance, voltage dimming input circuit are made up of comparator U2A, resistance R9, electric capacity C9, resistance R10; Wherein, resistance R9 one end connects the output of comparator U2B, described counnter attack diode D1 is arranged on therebetween, resistance R9 is connected the in-phase end of comparator U2A with one end of resistance R10, one end of electric capacity C9 is connected with the output of comparator U2A with the end of oppisite phase of comparator U2A, the other end ground connection of electric capacity C9.
7. four-in-one LED power linearity light adjusting control circuit according to claim 1, is characterized in that, also comprises external PWM light modulation port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228545.2A CN104837247A (en) | 2015-05-07 | 2015-05-07 | Four-in-one LED power supply linear dimming control circuit |
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| CN201510228545.2A CN104837247A (en) | 2015-05-07 | 2015-05-07 | Four-in-one LED power supply linear dimming control circuit |
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| CN104837247A true CN104837247A (en) | 2015-08-12 |
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| CN201510228545.2A Pending CN104837247A (en) | 2015-05-07 | 2015-05-07 | Four-in-one LED power supply linear dimming control circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105120575A (en) * | 2015-09-18 | 2015-12-02 | 上海泓语电气技术有限公司 | LED wide-scope accurate light modulation circuit |
| 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 |
| CN106793328A (en) * | 2017-01-06 | 2017-05-31 | 大连工业大学 | Based on adjustable selection light modulating device and its method for peak point current |
| CN109963373A (en) * | 2017-12-22 | 2019-07-02 | 明纬(广州)电子有限公司 | A kind of dimming input circuit |
| CN114126142A (en) * | 2021-11-05 | 2022-03-01 | 深圳市瑞晶实业有限公司 | Trinity dimmer circuit of output current precision is adjusted in area |
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| CN203554773U (en) * | 2013-07-18 | 2014-04-16 | 北京富桦明电子有限公司 | Combined light modulating circuit |
| CN203608428U (en) * | 2013-12-07 | 2014-05-21 | 宁波利顺达电源科技有限公司 | Four-in-one light modulation circuit of LED driving power supply |
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2015
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| EP1986470A3 (en) * | 2007-04-27 | 2011-11-30 | Korry Electronics Co. | Apparatus amd method to provide a hybrid linear/switching current source, such as for high-efficiency, wide dimming range light emitting diode (LED) backlighting |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105120575A (en) * | 2015-09-18 | 2015-12-02 | 上海泓语电气技术有限公司 | LED wide-scope accurate light modulation circuit |
| 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 |
| CN106658817B (en) * | 2016-09-30 | 2018-06-22 | 深圳莱福德科技股份有限公司 | A kind of dim signal processing system for LED drive power |
| CN106793328A (en) * | 2017-01-06 | 2017-05-31 | 大连工业大学 | Based on adjustable selection light modulating device and its method for peak point current |
| CN109963373A (en) * | 2017-12-22 | 2019-07-02 | 明纬(广州)电子有限公司 | A kind of dimming input circuit |
| CN109963373B (en) * | 2017-12-22 | 2021-11-09 | 明纬(广州)电子有限公司 | Dimming input circuit |
| CN114126142A (en) * | 2021-11-05 | 2022-03-01 | 深圳市瑞晶实业有限公司 | Trinity dimmer circuit of output current precision is adjusted in area |
| CN114126142B (en) * | 2021-11-05 | 2024-02-13 | 深圳市瑞晶实业有限公司 | Three-in-one dimming circuit with output current precision adjustment function |
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Application publication date: 20150812 |