CN107124789A - The Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input - Google Patents

The Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input Download PDF

Info

Publication number
CN107124789A
CN107124789A CN201710328947.9A CN201710328947A CN107124789A CN 107124789 A CN107124789 A CN 107124789A CN 201710328947 A CN201710328947 A CN 201710328947A CN 107124789 A CN107124789 A CN 107124789A
Authority
CN
China
Prior art keywords
module
fet
resistance
led
poles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710328947.9A
Other languages
Chinese (zh)
Inventor
岳向阳
赵力
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHENGZHOU KEMA MOVIE-TV OPTO-ELECTRONICS CO LTD
Original Assignee
ZHENGZHOU KEMA MOVIE-TV OPTO-ELECTRONICS CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHENGZHOU KEMA MOVIE-TV OPTO-ELECTRONICS CO LTD filed Critical ZHENGZHOU KEMA MOVIE-TV OPTO-ELECTRONICS CO LTD
Priority to CN201710328947.9A priority Critical patent/CN107124789A/en
Publication of CN107124789A publication Critical patent/CN107124789A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light emitting diodes [LEDs]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

The invention discloses a kind of Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input, overcome in the prior art, the problem of great power LED flash lamp for photography still needs to improve.The invention contains electricity-fetching module, luminance adjustment module, switch module, LED power supply module, colour temperature adjustment module, LED light group, LED overtemperature protection module and LED overcurrent protection module; electric energy is supplied luminance adjustment module by electricity-fetching module by wire; luminance adjustment module controls the size by LED power supply module electric current by adjusting electric current; LED power supply module is sequentially connected in series colour temperature adjustment module and LED light group, and LED power supply module is parallel with LED overtemperature protection module and LED overcurrent protection module.The invention replaces a high power adjustable position device with FET, and a variable voltage can be produced by adjusting its resistance, changed its driving voltage to change its conducting resistance, fed back to controller variable voltage to adjust electric current.

Description

The Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input
Technical field
The invention is related to a kind of high-power LED drive circuit, the illumination of more particularly to a kind of Width funtion multichannel input and The Jing Yin drive circuits of LED of adjustable color.
Background technology
Existing high-powered LED lamp, especially in video display industry in the professional great power LED flash lamp for photography more than 200W, The voltage of direct current supply is all in 26V to 36V scopes;An Alternating Current Power Supply part is single 220V, 110V;Also there are the wide models of 110V to 22V Enclose exchange input driving, but power volume weight super large, not portable and arrangement, cause in-convenience in use.
Video camera electric power system professional in the industry is all 12V, and the lithium battery of the video camera institute standard configuration of specialty with And the power supply adaptor of institute's standard configuration is also all 12V system, so if with existing great power LED flash lamp for photography, will be again Purchase amateur video camera standard configuration 12V battery and adapter;Can also there is the power output of battery using the battery of standard configuration The small and high-power problem of power LED lamp.There is substantial amounts of 48V battery of electric vehicle live simultaneously in, this battery storage is big, performance Stable, price is also very low, can easily take whenever and wherever possible, but it can not power with existing 36V, LED is powered, It is very inconvenient.
Existing professional great power LED flash lamp for photography lamp body and power supply, particularly power supply part are very heavy, very It is not portable, in particularly outdoor shooting, carry, site layout project is required for very big manpower, material resources and financial resources.High-powered LED lamp it is super The application of low Jing Yin fan radiating function can make LED to keep high power work, and illumination decay is slower, and the life-span is longer.
The content of the invention
Instant invention overcomes in the prior art, there is provided a kind of letter of structure for the problem of great power LED flash lamp for photography still needs to improve Single, the input of service-strong Width funtion multichannel the Jing Yin drive circuits of the LED of illumination and adjustable color.
The technical solution of the present invention is to provide the illumination and color of a kind of Width funtion multichannel input with following structure The adjustable Jing Yin drive circuits of LED of temperature:Contain electricity-fetching module, luminance adjustment module, switch module, LED power supply module, colour temperature Adjustment module, LED light group, LED overtemperature protection module and LED overcurrent protection module, electricity-fetching module is by wire by electric energy Luminance adjustment module is supplied, luminance adjustment module controls the size by LED power supply module electric current by adjusting electric current, LED power supply module is sequentially connected in series colour temperature adjustment module and LED light group, and LED power supply module is parallel with LED overtemperature protection mould Block and LED overcurrent protection module.
Preferably, the way of the electricity-fetching module and luminance adjustment module is N roads, wherein 3≤N≤10, each of which road Electricity-fetching module and luminance adjustment module series connection after, the output end of its luminance adjustment module is connected in LED in parallel and powered mould The input of block.
Preferably, the electricity-fetching module contains first via direct current electricity-fetching module, the second road direct current electricity-fetching module and taken with exchanging Electric module, wherein first via direct current electricity-fetching module contain direct current power taking interface J1, energy storage inductor L1 and filter capacitor C1, and direct current takes After electrical interface J1 and filter capacitor C1 are arranged side by side, filter capacitor C1 positive pole is connected with energy storage inductor L1 again, and energy storage inductor L1's is another One end is the positive pole of direct current power taking mould, and DC filter capacitor C1 negative pole is the negative pole of direct current power taking mould;Second road direct current power taking Module contains direct current power taking interface J2, energy storage inductor L2 and filter capacitor C5, and direct current power taking interface J2 and filter capacitor C5 is arranged side by side Afterwards, DC filter capacitor C5 positive pole is connected with energy storage inductor L2 again, and the energy storage inductor L2 other end is the second road direct current power taking The positive pole of mould, DC filter capacitor C5 negative pole is the negative pole of direct current power taking mould;Exchange electricity-fetching module contains exchange power taking interface J3, thermistor RT1, fuse F1, filter inductance L3, ac filter electric capacity C10, rectifier bridge BD1 and DC filter capacitor C11, exchange power taking interface J3 is sequentially connected in series thermistor RT1, filter inductance L3, rectifier bridge BD1 ac input end and fusing Loop is formed after device F1, DC filter capacitor C11 is connected in parallel on rectifier bridge BD1 DC output end.
Preferably, the luminance adjustment module contain first via DC current adjustment module, first via pwm chip, Second road DC current adjustment module, the second road pwm chip, ac-side current adjustment module and AC PWM control cores Piece, first via DC current adjustment module contains FET Q1, FET Q2, sustained diode 1, first via PWM controls Chip and pwm chip adjustable resistance module, the positive pole of sustained diode 1 and FET Q1 D poles connect power taking respectively The positive pole of module, FET Q1 S poles connection FET Q2 D poles, the negative pole of sustained diode 1 is first via direct current The cathode output end of current regulating module, FET Q2 S poles connect the negative pole of first via electricity-fetching module by wire;First The power pin VCC of road pwm chip connects voltage-regulator diode Z2 positive pole by wire, and driving pin DRV passes through wire FET Q1 G poles are connected, sampling pin CS connects FET Q1 S poles, set of frequency pin BOS series connection by wire The negative pole of first via electricity-fetching module is reconnected after FREQUENCY CONTROL electric capacity C3, standby pin VS and ground pin GND are all connected with first The negative pole of road electricity-fetching module;Second road DC current adjustment module contains FET Q7, FET Q8, fly-wheel diode D3, the second road pwm chip and pwm chip adjustable resistance module, the positive pole and FET Q7 of sustained diode 3 D poles connect the positive pole of electricity-fetching module respectively, FET Q7 S poles connection FET Q8 D poles, sustained diode 3 Negative pole is the cathode output end of the second road DC current adjustment module, and FET Q8 S poles connect the second tunnel by wire and taken The negative pole of electric module;The power pin VCC of second road pwm chip connects voltage-regulator diode Z2 positive pole by wire, drives Dynamic pin DRV connects FET Q7 G poles by wire, and sampling pin CS connects FET Q7 S poles, frequency by wire Rate sets the negative pole that the second road electricity-fetching module is reconnected after pin BOS series connection FREQUENCY CONTROL electric capacity C8, standby pin VS and ground connection Pin GND is all connected with the negative pole of the second road electricity-fetching module;Alternating current adjustment module contains voltage-regulator diode Z4, photo-coupler U5, FET Q9 and FET Q10, resistance R17, sustained diode 4 and energy storage inductor L4, voltage-regulator diode Z4 is just The negative pole of incoming transport electricity-fetching module after pole series connection photo-coupler U5 output end, resistance R17, voltage-regulator diode Z4 negative pole connects Enter to exchange the negative pole of electricity-fetching module, after the positive pole of FET Q9 D poles series connection sustained diode 4, sustained diode 4 it is negative The positive pole of pole connection exchange electricity-fetching module, FET Q9 D Ji Hege roads DC current adjustment module and alternating current regulation Energy storage inductor L4, FET Q9 S poles connection FET Q10 D poles, FET are in series between the negative pole of module Q10 S poles connect the negative pole for exchanging electricity-fetching module by wire, and FET Q10 G poles are connected to photo-coupler by wire On U5 and resistance R17 tie point;The power pin VCC of AC pwm chip connects voltage-regulator diode Z4 by wire Positive pole, driving pin DRV connects FET Q9 G poles by wire, and sampling pin CS connects FET by wire The negative pole of exchange electricity-fetching module, standby pin are reconnected after Q9 S poles, set of frequency pin BOS series connection FREQUENCY CONTROL electric capacity C13 VS is all connected with exchanging the negative pole of electricity-fetching module with ground pin GND.
Preferably, the pwm chip adjustable resistance module contains resistance R3, adjustable resistance RW1, resistance R11, resistance After R12 and operational amplifier U2A, wherein resistance R11, adjustable resistance RW1 two stationary contacts and resistance R12 are sequentially connected in series, electricity A resistance R11 end is connected on voltage-regulator diode Z2 positive pole, and a resistance R12 end is connected on the negative pole of each road direct current electricity-fetching module, moves Contact is connected to operational amplifier U2A normal phase input end, operational amplifier U2A inverting input series connection sampling by wire After resistance R14, the ground of alternating current adjustment module and resistance R12 low potential point, operational amplifier U2A output are respectively connected to Hold after series resistance R3, be respectively connected to FET Q2 G poles and FET Q8 G poles, operational amplifier U2A output end It is sequentially connected in series after resistance R15, photo-coupler U5 input, accesses the negative pole of each road direct current electricity-fetching module.
Preferably, the LED power supply module contains filter capacitor C9, two groups of LED light groups and sampling resistor in parallel R14, wherein in parallel with filter capacitor C9 after two groups of LED light group series connection sampling resistor R14, wherein filter capacitor C9 positive pole connection The positive pole of direct current electricity-fetching module is accessed on sustained diode 1 and D3 negative pole, it is straight that filter capacitor C9 negative pole is connected to each road On the negative pole for flowing current regulating module and alternating current adjustment module.
Preferably, the colour temperature adjustment module contains colour temperature regulation FET Q5 and Q6, colour temperature regulation FET Divider resistance R8 and R13, duplex resistor RW2 are driven, wherein two lead-out terminals after two groups of LED light groups are in parallel, leading to respectively The D poles that wire is connected to colour temperature regulation FET Q5 and Q6 are crossed, colour temperature regulation FET Q5 and Q6 S extremely pass through wire Connect sampling resistor R14 high potential one end, the driving divider resistance R8 of colour temperature regulation FET, duplex resistor RW2 After two static contacts and driving divider resistance R13 are sequentially connected in series, the filter capacitor C2 high electricity of positive pole and sampling resistor R14 is connected in parallel on Position one end, wherein filter capacitor C2 and sampling resistor R14 are mutually in series, and duplex resistor RW2 moving contact is distinguished by wire Connect colour temperature regulation FET Q5 and Q6 G poles.
Preferably, the LED overtemperature protection module contains current-limiting resistance R1, current-limiting resistance R2, current-limiting resistance R4, voltage stabilizing Diode Z1 and Z3 blower fan MG1, blower fan temperature detect switch (TDS) ST1, diode D5, wherein current-limiting resistance R1, current-limiting resistance R2, field-effect Pipe Q4 is sequentially connected in series the high potential of rear resistance R1 one end access LED light group, FET Q4 S poles access pwm chip VCC pins, after wherein voltage-regulator diode Z1 and Z3 are sequentially connected in series, voltage-regulator diode Z1 positive pole connection current-limiting resistance R2 height electricity After position, voltage-regulator diode Z3 negative pole connection FET Q4 S poles, blower fan temperature detect switch (TDS) ST1 and blower fan MG1 are sequentially connected in series, It is connected in parallel on current-limiting resistance R2 high potential and FET Q4 S poles, wherein the high potential series resistance R4 of LED light group and two poles Pipe D5 is followed by the G poles into FET Q4.
Preferably, the LED overcurrent protection module contains resistance R4, resistance R5, operational amplifier U2B, three poles of driving Pipe Q3, resistance R6, resistance R7 and voltage-regulator diode Z2, wherein resistance R6 and resistance R7 are connected in series, and resistance R7 low potential connects The negative pole of electricity-fetching module is connected on, resistance R6 high potential is connected to voltage-regulator diode Z3 negative pole, resistance R6 low potential connection In operational amplifier U2B end of oppisite phase, operational amplifier U2B in-phase end is connected in series sampling resistor R14 hot end, fortune Calculate the B poles after amplifier U2B output end series resistance R5 with triode Q3 to connect, triode Q3 C poles connecting resistance R4 and two Pole pipe D5 junction, triode Q3 E poles connect voltage-regulator diode Z2 negative pole.
Preferably, the switch module contains single-pole double-throw switch (SPDT) S1, one each road direct current of connection of two of which stationary contact The power pin VCC of pwm chip in current regulating module, another after current-limiting resistance R16 by connecting alternating current The power pin VCC of pwm chip in adjustment module, movable contact connects the negative pole of each road direct current electricity-fetching module.
Compared with prior art, the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input of the present invention With advantages below:Sampled voltage of the invention by adjusting MP4000, that is, adjust sampling resistor to adjust illumination.Substituted with Q2 Sampling resistor, high current is led to after Q2, has pressure drop U on Q2, the CS pins of this Voltage Feedback to MP4000, MP4000 passes through Detect this voltage to change the electric current of output, so as to control the brightness of high-powered LED lamp.The electric current application of final regulation output Into LED, ripple very little is not in stroboscopic phenomenon, it is ensured that have good shooting when professional camera is in high-speed camera Effect, meets professional camera high-speed camera requirement.
The method of conventional regulation sampling resistor is:With a high power adjustable position device, to adjust the resistance of potentiometer, High current produces a variable voltage on potentiometer;The present invention is by the supporting conventional electricity of a FET and one Position device, changes the driving voltage of FET to change the conducting resistance of FET, makes equivalent one of FET can power transformation Resistance, feeds back to one variable voltage of controller to adjust electric current.It is used as the FET Q2 and Q8 of sampling resistor in circuit Conduction resistance value can do corresponding adjustment as needed, to control the power of whole circuit, at the same can also according to input electricity The height of pressure adjusts the size of input power, when can accomplish that input voltage is low, and control is in low-power input.Can be largely Saving space, equipment is realized portability, and the function of adjusting brightness can be realized with less economic cost.
With the battery or power supply more than 12V voltages such as(24V、36V、48V)Shi Ruguo power can just use single channel enough Power supply, if not enough can also be with supplying power with double circuit.LED colour temperature is adjusted by the inventive method, situation about can be driven in single channel Under, while continuously adjusting two groups of LED bulbs, make colour temperature from the minimum of single group to the peak of single group.So ratio is driven with two-way Move and save half volume, material, meanwhile, adjusted without high-power potential device;Both saved space and also it is very economical, can Lean on.
Market it is existing radiating regulative mode be:A kind of is to be higher by common blower fan very high Jing Yin blower fan using price;One Plant and use common blower fan, noise is very big.The present invention is realized with common axial flow blower driving work using a kind of cleverly circuit In super-silent state, the major part of this circuit and the other parts of system are shared, and serve power saving function, with overheat, The defencive function of excessively stream.
Blower fan is the ultralow Jing Yin blower fan designed with conventional axial flow blower, and fan drive circuit is energy-conservation, material-saving, saves empty Between drive circuit, blower fan is LED lamp heat sink temperature is too high, driving current is excessive, and two kinds of conditions have just operating simultaneously.This The involved circuit drives blower fan of invention, can make common blower fan steady operation in ultralow mute state, both save effectively Space, the energy and raw material, also the too high economic pressures of Jing Yin blower fan price itself are saved for enterprise, so that with section Can, it is portable, stably, economic dispatch each side benefit, the application of ultralow Jing Yin fan radiating function makes LED to keep high-power Work, illumination decay is slower, and the life-span is longer.
The present invention can solve problems of the prior art well, and Width funtion model is produced with the spatial design of very little Direct current input, the high-powered LED lamp of adjustable color are enclosed, using the LED of technology production involved in the present invention, driving power supply is very Easily choose, can be selected completely in existing power supply, and small volume and lightweight, make drive part after product direct It is integral with LED, and the volume weight taken is all the very small part of whole lamp.Single driving circuit section, It is about the 1/4 of like product, even more small, more volume ratios of extension are smaller with being compared in the minimum like product of volume weight. Therefore it is easy for installation, there is very big advantage in transport arrangement.
The present invention is by two-way DC voltage booster circuit, and wide scope ac buck driving circuit, organic by public module all the way Combine, form the entirety of an organic unity, circuit is simplified reliably;Output control panel only one of which two-position switch figure In S1, and two potentiometer knobs, one tune one color-temperature regulating of illumination is simple to operate.
Brief description of the drawings
Fig. 1 is the structural representation of the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input of the present invention Figure;
Fig. 2 is pwm chip in the Jing Yin drive circuits of the LED of illumination and adjustable color that Width funtion multichannel of the present invention is inputted MP4000 structural representation.
Embodiment
The illumination and the LED of adjustable color inputted with reference to the accompanying drawings and detailed description to Width funtion multichannel of the present invention Jing Yin drive circuit is described further:
MP4000 recommend dimming mode be:MP4000 can use the outside pwm signal converted to adjust, and can also use one The DC voltage of change adjusts LED brightness.The pwm signal that recommendation is 200Hz-2MH with frequency is connected to MP4000 PWM Realized on pin, the resistance that a 300K is met on 4000 BOS pins is connected on GND, one 1.2 volts of PWM references are set Voltage signal, PWM high level chip operations, low level chip is closed.
In DC voltage adjustment modes, a control source from 0-2.4V to DIM pin, it is more than 2.4 volts of poles that 100% is bright, 120 millivolts bright to be issued to 5%, sets pulse frequency not dim if being connected to BOS pins and GND pin with an electric capacity, hangs Empty DIM pin are simultaneously connected to BOS pin on GND.
What the present invention was provided is the sampled voltage by adjusting MP4000, that is, adjusts sampling resistor to adjust illumination.Figure On Q2 be replacement sampling resistor;High current is led to after Q2, has pressure drop U on Q2, the CS of this Voltage Feedback to MP4000 Pin, MP4000 changes the brightness of the current control lamp of output by detecting this voltage
As illustrated, containing electricity-fetching module, luminance adjustment module, switch module, LED power supply module, colour temperature in the present embodiment Adjustment module, LED light group, LED overtemperature protection module and LED overcurrent protection module, electricity-fetching module is by wire by electric energy Luminance adjustment module is supplied, luminance adjustment module controls the size by LED power supply module electric current by adjusting electric current, LED power supply module is sequentially connected in series colour temperature adjustment module and LED light group, and LED power supply module is parallel with LED overtemperature protection mould Block and LED overcurrent protection module.
The way of the electricity-fetching module and luminance adjustment module is N roads, wherein 3≤N≤10, the power taking mould on each of which road After block and luminance adjustment module series connection, the output end of its luminance adjustment module is connected in the input of LED power supply module in parallel End.
The electricity-fetching module contains first via direct current electricity-fetching module, the second road direct current electricity-fetching module and exchanges electricity-fetching module, Wherein first via direct current electricity-fetching module contains direct current power taking interface J1, energy storage inductor L1 and filter capacitor C1, direct current power taking interface After J1 and filter capacitor C1 are arranged side by side, filter capacitor C1 positive pole is connected with energy storage inductor L1 again, and the energy storage inductor L1 other end is The positive pole of direct current power taking mould, DC filter capacitor C1 negative pole is the negative pole of direct current power taking mould;Second road direct current electricity-fetching module contains There are direct current power taking interface J2, energy storage inductor L2 and filter capacitor C5, after direct current power taking interface J2 and filter capacitor C5 is arranged side by side, direct current Filter capacitor C5 positive pole is connected with energy storage inductor L2 again, the energy storage inductor L2 other end for the second road direct current power taking mould just Pole, DC filter capacitor C5 negative pole is the negative pole of direct current power taking mould;Exchange electricity-fetching module contains exchange power taking interface J3, temperature-sensitive Resistance RT1, fuse F1, filter inductance L3, ac filter electric capacity C10, rectifier bridge BD1 and DC filter capacitor C11, exchange take Electrical interface J3 is sequentially connected in series after thermistor RT1, filter inductance L3, rectifier bridge BD1 ac input end and fuse F1 and formed Loop, DC filter capacitor C11 is connected in parallel on rectifier bridge BD1 DC output end.
It is straight that the luminance adjustment module contains first via DC current adjustment module, first via pwm chip, the second tunnel Flow current regulating module, the second road pwm chip, ac-side current adjustment module and AC pwm chip, the first via DC current adjustment module contains FET Q1, FET Q2, sustained diode 1, first via pwm chip and PWM Control chip adjustable resistance module, the positive pole of sustained diode 1 and FET Q1 D poles are connecting electricity-fetching module just respectively Pole, FET Q1 S poles connection FET Q2 D poles, the negative pole of sustained diode 1 is adjusted for first via DC current The cathode output end of module, FET Q2 S poles connect the negative pole of first via electricity-fetching module by wire;First via PWM is controlled The power pin VCC of coremaking piece connects voltage-regulator diode Z2 positive pole by wire, and driving pin DRV connects field by wire and imitated Should pipe Q1 G poles, sampling pin CS passes through the S poles that wire connects FET Q1, set of frequency pin BOS series connection FREQUENCY CONTROLs The negative pole of first via electricity-fetching module is reconnected after electric capacity C3, standby pin VS and ground pin GND are all connected with first via power taking mould The negative pole of block;Second road DC current adjustment module contains FET Q7, FET Q8, sustained diode 3, the second tunnel Pwm chip and pwm chip adjustable resistance module, the positive pole of sustained diode 3 and FET Q7 D poles difference Connect the positive pole of electricity-fetching module, FET Q7 S poles connection FET Q8 D poles, the negative pole of sustained diode 3 is the The cathode output end of two road DC current adjustment modules, FET Q8 S poles connect the second road electricity-fetching module by wire Negative pole;The power pin VCC of second road pwm chip connects voltage-regulator diode Z2 positive pole, driving pin DRV by wire FET Q7 G poles are connected by wire, sampling pin CS connects FET Q7 S poles, set of frequency pipe by wire The negative pole of the second road electricity-fetching module is reconnected after pin BOS series connection FREQUENCY CONTROL electric capacity C8, standby pin VS and ground pin GND are equal Connect the negative pole of the second road electricity-fetching module;Alternating current adjustment module contains voltage-regulator diode Z4, photo-coupler U5, FET Q9 and FET Q10, resistance R17, sustained diode 4 and energy storage inductor L4, voltage-regulator diode Z4 positive pole series connection optical coupling The negative pole of incoming transport electricity-fetching module, voltage-regulator diode Z4 negative pole incoming transport power taking mould after device U5 output end, resistance R17 After the negative pole of block, the positive pole of FET Q9 D poles series connection sustained diode 4, the negative pole connection exchange of sustained diode 4 takes The positive pole of electric module, FET Q9 D Ji Hege roads DC current adjustment module and the negative pole of alternating current adjustment module it Between be in series with energy storage inductor L4, FET Q9 S poles connection FET Q10 D poles, FET Q10 S poles are by leading The negative pole of line connection exchange electricity-fetching module, FET Q10 G poles are connected to photo-coupler U5's and resistance R17 by wire On tie point;The power pin VCC of AC pwm chip connects voltage-regulator diode Z4 positive pole, driving tube by wire Pin DRV connects FET Q9 G poles by wire, and sampling pin CS connects FET Q9 S poles by wire, and frequency is set Put the negative pole that exchange electricity-fetching module is reconnected after pin BOS series connection FREQUENCY CONTROL electric capacity C13, standby pin VS and ground pin GND is all connected with exchanging the negative pole of electricity-fetching module.
The pwm chip adjustable resistance module contains resistance R3, adjustable resistance RW1, resistance R11, resistance R12 and fortune Calculate amplifier U2A, after wherein resistance R11, adjustable resistance RW1 two stationary contacts and resistance R12 are sequentially connected in series, resistance R11's One end is connected on voltage-regulator diode Z2 positive pole, and a resistance R12 end is connected on the negative pole of each road direct current electricity-fetching module, and movable contact passes through Wire is connected to operational amplifier U2A normal phase input end, operational amplifier U2A inverting input series connection sampling resistor R14 Afterwards, the ground of alternating current adjustment module and resistance R12 low potential point, operational amplifier U2A output end series connection are respectively connected to After resistance R3, FET Q2 G poles and FET Q8 G poles are respectively connected to, operational amplifier U2A output end is gone here and there successively Join after resistance R15, photo-coupler U5 input, access the negative pole of each road direct current electricity-fetching module.
The LED power supply module contains filter capacitor C9, two groups of LED light groups and sampling resistor R14 in parallel, wherein two In parallel with filter capacitor C9 after group LED light group series connection sampling resistor R14, wherein filter capacitor C9 positive pole is connected to the pole of afterflow two The positive pole of direct current electricity-fetching module is accessed on pipe D1 and D3 negative pole, filter capacitor C9 negative pole is connected to each road DC current regulation On the negative pole of module and alternating current adjustment module.
The colour temperature adjustment module contains the driving partial pressure that colour temperature regulation FET Q5 and Q6, colour temperature adjust FET Resistance R8 and R13, duplex resistor RW2, wherein two lead-out terminals after two groups of LED light groups are in parallel, being connected respectively by wire Colour temperature regulation FET Q5 and Q6 D poles are connected on, colour temperature regulation FET Q5 and Q6 S are extremely connected by wire to sample Resistance R14 high potential one end, driving divider resistance R8, duplex resistor RW2 two stationary contacts of colour temperature regulation FET After head and driving divider resistance R13 are sequentially connected in series, filter capacitor C2 positive pole and sampling resistor R14 high potentials one end is connected in parallel on, Wherein filter capacitor C2 and sampling resistor R14 are mutually in series, and duplex resistor RW2 moving contact connects colour temperature respectively by wire Adjust FET Q5 and Q6 G poles.
The LED overtemperature protection module contains current-limiting resistance R1, current-limiting resistance R2, current-limiting resistance R4, voltage-regulator diode Z1 and Z3 blower fans MG1, blower fan temperature detect switch (TDS) ST1, diode D5, wherein current-limiting resistance R1, current-limiting resistance R2, FET Q4 according to The high potential of LED light group, FET Q4 S poles access pwm chip VCC pipes are accessed in resistance R1 one end after secondary series connection Pin, after wherein voltage-regulator diode Z1 and Z3 are sequentially connected in series, voltage-regulator diode Z1 positive pole connection current-limiting resistance R2 high potential, surely Press diode Z3 negative pole to connect FET Q4 S poles, after blower fan temperature detect switch (TDS) ST1 and blower fan MG1 are sequentially connected in series, be connected in parallel on After the high potential series resistance R4 and diode D5 of current-limiting resistance R2 high potential and FET Q4 S poles, wherein LED light group Access FET Q4 G poles.
The LED overcurrent protection module contain resistance R4, resistance R5, operational amplifier U2B, driving triode Q3, electricity R6, resistance R7 and voltage-regulator diode Z2 are hindered, wherein resistance R6 and resistance R7 are connected in series, and resistance R7 low potential is connected to power taking The negative pole of module, resistance R6 high potential is connected to voltage-regulator diode Z3 negative pole, and resistance R6 low potential is connected to computing and put Big device U2B end of oppisite phase, operational amplifier U2B in-phase end is connected in series sampling resistor R14 hot end, operational amplifier B poles after U2B output end series resistance R5 with triode Q3 are connected, triode Q3 C poles connecting resistance R4's and diode D5 Junction, triode Q3 E poles connect voltage-regulator diode Z2 negative pole.
The switch module contains single-pole double-throw switch (SPDT) S1, each road DC current regulation of one connection of two of which stationary contact The power pin VCC of pwm chip in module, another is by connecting alternating current adjustment module after current-limiting resistance R16 In pwm chip power pin VCC, movable contact connects the negative pole of each road direct current electricity-fetching module.
The present invention includes two-way DC boosting variator and all the way wide scope ac buck converter, output driving LED The current adjustment of lamp group, and can adjust the high-powered LED lamp group of two groups of different colours, the wherein quantity of LED lamp bead not by The limitation of display number in accompanying drawing, can be by experiment in production after, be adjusted.The type of attachment of LED lamp bead includes series connection Form and parallel form.
The present invention includes two DC boosting modules, and an ac buck module, drive current adjustment module is ultralow Jing Yin Blower fan drive control module, colour temperature adjustment module, several modules compositions such as high-power LED lamp module.
DC boosting unit 1:Include DC input terminal J1, inductance L1, electric capacity C1, C2, C3, C4, diode D1, voltage stabilizing Pipe Z2, FET Q1, Q2, U1 control chips MP4000;Wherein L1, Q1, D1, U1, C4 constitute boosting loop, Q2 as shown in the figure The FET of sampling resistor is used as, Z2, C2 are the voltage-stabilized power supplies of main control chip.U1 7 pin connection 10V power supplys, U1 1 pin Control driving Q1, U1 2 pin sections sampling FET Q2 D poles, sampling FET Q2 are exported with drive current adjustment module Variable voltage driving, DS is equivalent to control Q1 break-make by 1 pin after a sampling resistor, U1 sampling feedbacks after conducting, So as to export constant current driven LED lamp component in C4 and D1 junctions, and output current is adjustable.
DC boosting unit 2:Structure and principle and DC boosting unit 1 are identical, if powered using multi-channel DC, direct current Boosting unit repeats to arrange.Common portion will not also increase in circuit, and drive circuit autgmentability is more powerful.
Ac buck module includes:AC input terminal J3, thermistor RT1, protective tube F1, electric capacity C10, inductance L3, Diode bridge BD1, electric capacity C11, current-limiting resistance R16, voltage-stabiliser tube Z3, electric capacity C12, MP4000 main control chip U3, optocoupler U5, resistance R15, R17, electric capacity C13, FET Q9, Q10, diode D4, inductance L4, electric capacity C9;The electric current regulation of the module, using straight The voltage of U2A outputs in the electric current regulation of current circuit, is coupled by optocoupler U5, resistance R15, and is supplied from the 10V of main control chip Power supply(U3 7 pin) it is connected with the output end of optocoupler through R17, to the 10V power supplys of main control chip(U3 4 pin), with U2A The change of the voltage of output, obtains a variable voltage on R17 high potential, is connected to Q10 G ends, and driving Q10 is led It is logical, can equivalent one resistance that changes with this driving voltage, U3 7 pin connection 10V power supplys, the 1 of U3 at Q10 DS two ends Foot control system drives Q9, U3 2 pin sections sampling FET Q10 D poles, FET Q10 drive current adjustment modules of sampling The variable voltage driving of output, controls Q9's logical after the equivalent sampling resistor of DS, U3 sampling feedbacks after conducting by 1 pin It is disconnected, export adjustable current.
The output end of AC module is connected with two-way direct current output, and three circuits are unified to an output end, connect simultaneously Other common portion modules.Exchange driving of the present invention is voltage-dropping type non-isolation type drive circuit, specifically on lamp body Enough insulation measures are done:1st, in output end LED aluminum base plate component, there is the silica gel plate of insulating heat-conductive between aluminium base and radiator Isolation;2nd, fixed aluminium base is isolated with the screw of radiator with common dielectric ion;3rd, radiator and housing are plastic insulations; 4th, the locking knob screw that portable U-shaped frame is connected with lamp body for fixed light or directly be moulded in plastics and outside it is complete every From.
The advantage in terms of voltage-dropping type non-isolation type drive circuit electrical equipment used in the present invention is:Directly alternating current is passed through Rectification drives LED lamp component later, and output voltage can be very high, input AC 220V, and the voltage of output driving LED can reach To 200V, the more LED lamp beads of serial number can be thus driven, efficiency is than converting alternating current to after voltage-stabilized power supply again Boosting inverter is at least higher by one times into LED drive circuit;First, middle one-level varying circuit can be saved, centre can be disregarded The power attenuation of circuit;Than tens volts voltage driving LED efficiency of second, 200V or so high voltage drive LED are high, As long as because decompression will loss of energy, the energy of more losses of drop is bigger, and the energy of power more lossy is also bigger;The Three, same amount of LED, series connection is more, and in parallel just few, driving current can also reduce at double, and small current driving is than big electricity Flow drive efficiency high.
Therefore, the circuit used in the present invention, higher than common circuit efficiency under same driving power, efficiency high Produced heat is just small, thus just high power device can be replaced complete with general common device again in very small volume The function of LED is driven into high-power driving.Drive current adjustment module includes:R3, R11, R12, RW1, R14 and amplifier U2A Composition, U2A is common double amplifier chip, and R11, RW1, R12 resistance string pass through the centre of potentiometer from 10V to systematically connecting Tap gives amplifier U2A in-phase ends one variable voltage reference, the sampling resistor R14 of U2A end of oppisite phase connection output high potential End, U2A output ends drive FET Q2 and the second road DC boosting unit in first via DC boosting unit by resistance R3 Middle FET Q8, so adjusts potentiometer RW1, so that it may so that FET Q2, Q8 driving voltage change, and make whole The electric current of circuit is constant, so as to reach the effect of constant current driving.
The driving power supply of blower fan is designed as follows in LED overtemperature protection module:Required for pwm chip in circuit 10V power supplys individually will be taken from input originally, be constituted with a current-limiting resistance and a voltage-stabiliser tube and filter capacitor , way to take power of the invention is:The DC10V power supplys of control chip, this side are taken by the way that output is the driving point of great power LED Method also just saves the other individually designed circuit powered all the way to IC chip.Both save Master Cost and also save the energy Waste and also save space.In output end, LED voltage can change in the range of a very little.Normally opened temperature control herein Switch is secured on the radiator of LED, and closure is switched when temperature is increased to the temperature of temperature detect switch (TDS), and blower fan connects fortune Turn.Opposite blower fan will not be operated;And the voltage at blower fan two ends is without departing from the design electricity at even voltage-stabiliser tube Z1, Z3 two ends Pressure, therefore blower fan is also controlled at subwoofer operating condition.
The FET Q3 of N-channel on or off in LED overcurrent protection module, also according to the drive of whole LED Streaming current size determines that driving current is big, and the heating of LED is just high, it is necessary to radiate, Q3 cut-offs, blower fan both end voltage be Z1, Z3 both end voltage, blower fan is rotated;The driving current of opposite LED is small, is reliably radiated by the radiator of LED, Blower fan is not needed to rotate.
The implementing circuit of the FET Q4 of N-channel on or off is:R4, D5, Q3, R5, U2B, R6 on figure, The several devices of R7 are completed, and series connection D5 is to ensure Q4 conducting from after the high potential connection power taking of output by R4, and R14 is whole circuit Sampling resistor, U2B is common operational amplifier, and R6, R7 are the end of oppisite phase that U2B is met by partial pressure benchmark on IC power supplys 10V, U2B in-phase end connects the high-end of the sampling R14 of circuit, and R8 couples U2B output driving triode Q3 B poles, and Q3 C poles meet R4 With D2 junction, when amplifier U2B anti-phase terminal voltage is less than sampling terminal voltage, now LED electric current is larger, amplifier output Hold as high level, driving Q3 conductings, the voltage driving Q4 is low level, and Q4 is not turned on, and blower fan turns when temperature detect switch (TDS) ST1 is closed It is dynamic;On the contrary, blower fan will not be rotated.
Colour temperature adjustment module includes:Resistance R8, R13, FET Q5, Q6, duplex potentiometer RW2, Q5, Q6 D poles point The low potential connection of two groups of LEDs is not connected, and Q5, Q6 S poles are connected and connect on the sampling resistor R14 of system, Q5 G poles With one group of centre tap connection in duplex potentiometer RW2, Q6 G is extremely with duplex potentiometer RW2 another set centre tap Connection, hot end and R8 connections after the two ends of two groups of potentiometer resistance bodies are connected respectively, cold end with R13 connections, R8's High level end connects 10V power supplys, and R13 low level end connects Q5, Q6 S poles;Potentiometer, Q5, Q6 are adjusted by above-mentioned method Equivalent resistance size between DS is upper is with the change of driving voltage, and pressure drop also changes therewith, the electric current of such two groups of LED bulbs With change, it also can just adjust corresponding colour temperature and be continuously adjustabe.
LED light group:LED lamp bead number it is selected according to whole lamp brightness, the connection in series-parallel of LED lamp bead is according to drive circuit Output voltage current range is combined;The colour temperature minimum of the output of the colour temperature of lamp bead as requested selects a kind of lamp of colour temperature Bubble, it is desirable to the colour temperature peak of output select a kind of bulb of colour temperature, the lamp bead of such two kinds of colour temperatures just can be in driving electricity Brightness and colour temperature are adjusted under the driving on road.

Claims (10)

1. a kind of Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input, it is characterised in that:Contain power taking Module, luminance adjustment module, switch module, LED power supply module, colour temperature adjustment module, LED light group, LED overtemperature protection mould Electric energy is supplied luminance adjustment module by block and LED overcurrent protection module, electricity-fetching module by wire, and luminance adjustment module passes through Regulation electric current controls the size by LED power supply module electric current, LED power supply module be sequentially connected in series colour temperature adjustment module and LED light group, LED power supply module is parallel with LED overtemperature protection module and LED overcurrent protection module.
2. the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input according to claim 1, it is special Levy and be:The way of the electricity-fetching module and luminance adjustment module is N roads, wherein 3≤N≤10, the power taking mould on each of which road After block and luminance adjustment module series connection, the output end of its luminance adjustment module is connected in the input of LED power supply module in parallel End.
3. the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input according to claim 2, it is special Levy and be:The electricity-fetching module contains first via direct current electricity-fetching module, the second road direct current electricity-fetching module and exchanges electricity-fetching module, its Middle first via direct current electricity-fetching module contains direct current power taking interface J1, energy storage inductor L1 and filter capacitor C1, direct current power taking interface J1 With filter capacitor C1 it is arranged side by side after, filter capacitor C1 positive pole is connected with energy storage inductor L1 again, and the energy storage inductor L1 other end is straight The positive pole of power taking mould is flowed, DC filter capacitor C1 negative pole is the negative pole of direct current power taking mould;Second road direct current electricity-fetching module contains Direct current power taking interface J2, energy storage inductor L2 and filter capacitor C5, after direct current power taking interface J2 and filter capacitor C5 is arranged side by side, direct current filter Ripple electric capacity C5 positive pole is connected with energy storage inductor L2 again, and the energy storage inductor L2 other end is the positive pole of the second road direct current power taking mould, DC filter capacitor C5 negative pole is the negative pole of direct current power taking mould;Exchange electricity-fetching module contains exchange power taking interface J3, temperature-sensitive electricity RT1, fuse F1, filter inductance L3, ac filter electric capacity C10, rectifier bridge BD1 and DC filter capacitor C11 are hindered, power taking is exchanged Interface J3 is formed back after being sequentially connected in series thermistor RT1, filter inductance L3, rectifier bridge BD1 ac input end and fuse F1 Road, DC filter capacitor C11 is connected in parallel on rectifier bridge BD1 DC output end.
4. the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input according to claim 2, it is special Levy and be:It is straight that the luminance adjustment module contains first via DC current adjustment module, first via pwm chip, the second tunnel Current regulating module, the second road pwm chip, ac-side current adjustment module and AC pwm chip are flowed,
First via DC current adjustment module contains FET Q1, FET Q2, sustained diode 1, first via PWM controls Coremaking piece and pwm chip adjustable resistance module, the positive pole of sustained diode 1 and FET Q1 D poles connect take respectively The positive pole of electric module, FET Q1 S poles connection FET Q2 D poles, the negative pole of sustained diode 1 is straight for the first via The cathode output end of current regulating module is flowed, FET Q2 S poles connect the negative pole of first via electricity-fetching module by wire;The The power pin VCC of pwm chip connects voltage-regulator diode Z2 positive pole by wire all the way, and pin DRV is by leading for driving Line connection FET Q1 G poles, sampling pin CS connects FET Q1 S poles, set of frequency pin BOS strings by wire Join the negative pole that first via electricity-fetching module is reconnected after FREQUENCY CONTROL electric capacity C3, standby pin VS and ground pin GND are all connected with the The negative pole of electricity-fetching module all the way;Second road DC current adjustment module contains FET Q7, FET Q8, fly-wheel diode D3, the second road pwm chip and pwm chip adjustable resistance module, the positive pole and FET Q7 of sustained diode 3 D poles connect the positive pole of electricity-fetching module respectively, FET Q7 S poles connection FET Q8 D poles, sustained diode 3 Negative pole is the cathode output end of the second road DC current adjustment module, and FET Q8 S poles connect the second tunnel by wire and taken The negative pole of electric module;The power pin VCC of second road pwm chip connects voltage-regulator diode Z2 positive pole by wire, drives Dynamic pin DRV connects FET Q7 G poles by wire, and sampling pin CS connects FET Q7 S poles, frequency by wire Rate sets the negative pole that the second road electricity-fetching module is reconnected after pin BOS series connection FREQUENCY CONTROL electric capacity C8, standby pin VS and ground connection Pin GND is all connected with the negative pole of the second road electricity-fetching module;Alternating current adjustment module contains voltage-regulator diode Z4, photo-coupler U5, FET Q9 and FET Q10, resistance R17, sustained diode 4 and energy storage inductor L4, voltage-regulator diode Z4 is just The negative pole of incoming transport electricity-fetching module after pole series connection photo-coupler U5 output end, resistance R17, voltage-regulator diode Z4 negative pole connects Enter to exchange the negative pole of electricity-fetching module, after the positive pole of FET Q9 D poles series connection sustained diode 4, sustained diode 4 it is negative The positive pole of pole connection exchange electricity-fetching module, FET Q9 D Ji Hege roads DC current adjustment module and alternating current regulation Energy storage inductor L4, FET Q9 S poles connection FET Q10 D poles, FET are in series between the negative pole of module Q10 S poles connect the negative pole for exchanging electricity-fetching module by wire, and FET Q10 G poles are connected to photo-coupler by wire On U5 and resistance R17 tie point;The power pin VCC of AC pwm chip connects voltage-regulator diode Z4 by wire Positive pole, driving pin DRV connects FET Q9 G poles by wire, and sampling pin CS connects FET by wire The negative pole of exchange electricity-fetching module, standby pin are reconnected after Q9 S poles, set of frequency pin BOS series connection FREQUENCY CONTROL electric capacity C13 VS is all connected with exchanging the negative pole of electricity-fetching module with ground pin GND.
5. the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input according to claim 4, it is special Levy and be:The pwm chip adjustable resistance module contains resistance R3, adjustable resistance RW1, resistance R11, resistance R12 and fortune Calculate amplifier U2A, after wherein resistance R11, adjustable resistance RW1 two stationary contacts and resistance R12 are sequentially connected in series, resistance R11's One end is connected on voltage-regulator diode Z2 positive pole, and a resistance R12 end is connected on the negative pole of each road direct current electricity-fetching module, and movable contact passes through Wire is connected to operational amplifier U2A normal phase input end, operational amplifier U2A inverting input series connection sampling resistor R14 Afterwards, the ground of alternating current adjustment module and resistance R12 low potential point, operational amplifier U2A output end series connection are respectively connected to After resistance R3, FET Q2 G poles and FET Q8 G poles are respectively connected to, operational amplifier U2A output end is gone here and there successively Join after resistance R15, photo-coupler U5 input, access the negative pole of each road direct current electricity-fetching module.
6. the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input according to claim 1, it is special Levy and be:The LED power supply module contains filter capacitor C9, two groups of LED light groups and sampling resistor R14 in parallel, wherein two In parallel with filter capacitor C9 after group LED light group series connection sampling resistor R14, wherein filter capacitor C9 positive pole is connected to the pole of afterflow two The positive pole of direct current electricity-fetching module is accessed on pipe D1 and D3 negative pole, filter capacitor C9 negative pole is connected to each road DC current regulation On the negative pole of module and alternating current adjustment module.
7. the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input according to claim 1, it is special Levy and be:The colour temperature adjustment module contains the driving partial pressure that colour temperature regulation FET Q5 and Q6, colour temperature adjust FET Resistance R8 and R13, duplex resistor RW2, wherein two lead-out terminals after two groups of LED light groups are in parallel, being connected respectively by wire Colour temperature regulation FET Q5 and Q6 D poles are connected on, colour temperature regulation FET Q5 and Q6 S are extremely connected by wire to sample Resistance R14 high potential one end, driving divider resistance R8, duplex resistor RW2 two stationary contacts of colour temperature regulation FET After head and driving divider resistance R13 are sequentially connected in series, filter capacitor C2 positive pole and sampling resistor R14 high potentials one end is connected in parallel on, Wherein filter capacitor C2 and sampling resistor R14 are mutually in series, and duplex resistor RW2 moving contact connects colour temperature respectively by wire Adjust FET Q5 and Q6 G poles.
8. the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input according to claim 1, it is special Levy and be:The LED overtemperature protection module contains current-limiting resistance R1, current-limiting resistance R2, current-limiting resistance R4, voltage-regulator diode Z1 With Z3 blower fans MG1, blower fan temperature detect switch (TDS) ST1, diode D5, wherein current-limiting resistance R1, current-limiting resistance R2, FET Q4 are successively The high potential of LED light group is accessed in resistance R1 one end after series connection, and pwm chip VCC pins are accessed in FET Q4 S poles, After wherein voltage-regulator diode Z1 and Z3 are sequentially connected in series, voltage-regulator diode Z1 positive pole connection current-limiting resistance R2 high potential, voltage stabilizing After diode Z3 negative pole connection FET Q4 S poles, blower fan temperature detect switch (TDS) ST1 and blower fan MG1 are sequentially connected in series, limit is connected in parallel on The high potential series resistance R4 and diode D5 of leakage resistance R2 high potential and FET Q4 S poles, wherein LED light group are followed by Enter FET Q4 G poles.
9. the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input according to claim 1, it is special Levy and be:The LED overcurrent protection module contains resistance R4, resistance R5, operational amplifier U2B, driving triode Q3, resistance R6, resistance R7 and voltage-regulator diode Z2, wherein resistance R6 and resistance R7 are connected in series, and resistance R7 low potential is connected to power taking mould The negative pole of block, resistance R6 high potential is connected to voltage-regulator diode Z3 negative pole, and resistance R6 low potential is connected to operation amplifier Device U2B end of oppisite phase, operational amplifier U2B in-phase end is connected in series sampling resistor R14 hot end, operational amplifier B poles after U2B output end series resistance R5 with triode Q3 are connected, triode Q3 C poles connecting resistance R4's and diode D5 Junction, triode Q3 E poles connect voltage-regulator diode Z2 negative pole.
10. the Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input according to claim 4, its It is characterised by:The switch module contains single-pole double-throw switch (SPDT) S1, and one each road DC current of connection of two of which stationary contact is adjusted The power pin VCC of the pwm chip in module is saved, another adjusts mould by connecting alternating current after current-limiting resistance R16 The power pin VCC of pwm chip in block, movable contact connects the negative pole of each road direct current electricity-fetching module.
CN201710328947.9A 2017-05-11 2017-05-11 The Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input Pending CN107124789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710328947.9A CN107124789A (en) 2017-05-11 2017-05-11 The Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710328947.9A CN107124789A (en) 2017-05-11 2017-05-11 The Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input

Publications (1)

Publication Number Publication Date
CN107124789A true CN107124789A (en) 2017-09-01

Family

ID=59728253

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710328947.9A Pending CN107124789A (en) 2017-05-11 2017-05-11 The Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input

Country Status (1)

Country Link
CN (1) CN107124789A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201028360Y (en) * 2007-01-18 2008-02-27 郭保平 High-power LED desk lamp
CN202024239U (en) * 2011-01-18 2011-11-02 毕菲阳 Color-changing foldable desk lamp
CN203131565U (en) * 2013-03-19 2013-08-14 林凤娇 Led desk lamp
CN103384430A (en) * 2012-05-06 2013-11-06 袁明 LED safe lighting system
CN203279312U (en) * 2013-06-14 2013-11-06 成都锐奕信息技术有限公司 LED control circuit capable of adjusting current
CN204145850U (en) * 2014-11-05 2015-02-04 西安理想华夏科技创新有限公司 The LED street lamp of a kind of pair of adjustable color
CN104735882A (en) * 2015-04-08 2015-06-24 中山市祥普照明科技有限公司 LED dimming and color adjusting circuit
CN204887530U (en) * 2015-05-12 2015-12-16 广东凯乐斯光电科技有限公司 Multiplexed output LED long -distance intelligent control power of adjusting luminance
CN106641848A (en) * 2017-01-20 2017-05-10 浙江大学 Double-power-feeding intelligent table lamp based on single-chip-microcomputer image recognition and automatic luminance adjustment

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201028360Y (en) * 2007-01-18 2008-02-27 郭保平 High-power LED desk lamp
CN202024239U (en) * 2011-01-18 2011-11-02 毕菲阳 Color-changing foldable desk lamp
CN103384430A (en) * 2012-05-06 2013-11-06 袁明 LED safe lighting system
CN203131565U (en) * 2013-03-19 2013-08-14 林凤娇 Led desk lamp
CN203279312U (en) * 2013-06-14 2013-11-06 成都锐奕信息技术有限公司 LED control circuit capable of adjusting current
CN204145850U (en) * 2014-11-05 2015-02-04 西安理想华夏科技创新有限公司 The LED street lamp of a kind of pair of adjustable color
CN104735882A (en) * 2015-04-08 2015-06-24 中山市祥普照明科技有限公司 LED dimming and color adjusting circuit
CN204887530U (en) * 2015-05-12 2015-12-16 广东凯乐斯光电科技有限公司 Multiplexed output LED long -distance intelligent control power of adjusting luminance
CN106641848A (en) * 2017-01-20 2017-05-10 浙江大学 Double-power-feeding intelligent table lamp based on single-chip-microcomputer image recognition and automatic luminance adjustment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZHENG LUO: "Boundary Mode Offline LED Driver Using MP4000", 《THE FUTURE OF ANALOG IC TECHNOLOGY》 *

Similar Documents

Publication Publication Date Title
CN103857152B (en) There is the power-supply system of multiple-channel output
CN104429159A (en) Near unity power factor long life low cost led lamp retrofit system and method
CN201310774Y (en) LED illuminating system capable of adjusting color temperature
CN104272874B (en) For drive circuit and the floodlight of solid state light emitter
CN202172516U (en) Brightness and color temperature adjustable LED lamp
CN204836661U (en) Led lamp
CN105657899A (en) Multi-circuit LED constant current driving circuit and control method thereof
CN203261517U (en) LED photoflood lamp capable of accurately displaying brightness and color temperature
CN103442503A (en) LED (Light Emitting Diode) light source system for adjusting color temperature and color temperature adjusting method thereof
CN107493635A (en) A kind of more pixel drive systems of LED
CN202617421U (en) Led lamp
CN202334999U (en) LED (light emitting diode) driving device
CN103476189A (en) Switching type output transformation and variable current LED (Light-Emitting Diode) driving power supply circuit
CN205657888U (en) Auxiliary power circuit , LED drive circuit , LED driver
CN205005298U (en) LED lamps and lanterns of switch mixing of colors and control circuit thereof
CN107124789A (en) The Jing Yin drive circuits of the LED of illumination and adjustable color of Width funtion multichannel input
CN207911083U (en) A kind of LED light group device that can smoothly dim color-temperature regulating
CN107094337B (en) Light-operated wide voltage LED lamp drive circuit
CN113630929A (en) Dimming and color mixing control circuit and LED lighting device
CN206807824U (en) A kind of middle low power intelligent lighting dims color-changed LED driving power without stroboscopic
CN206164934U (en) Linear constant -current drive circuit of LED and LED lighting device
CN206743605U (en) A kind of LED colour temperature adjusts circui under FET shunting action
CN103982804B (en) A kind of free drive moves adjustable color temperature device and light fixture
CN206790736U (en) The LED array intelligent lamp of WiFi controls
CN104507200B (en) LED light-dimming and color temperature adjusting circuit

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20170901

RJ01 Rejection of invention patent application after publication