CN207070402U - A kind of Width funtion LED lamp drive circuit of tunable optical - Google Patents

A kind of Width funtion LED lamp drive circuit of tunable optical Download PDF

Info

Publication number
CN207070402U
CN207070402U CN201720789221.0U CN201720789221U CN207070402U CN 207070402 U CN207070402 U CN 207070402U CN 201720789221 U CN201720789221 U CN 201720789221U CN 207070402 U CN207070402 U CN 207070402U
Authority
CN
China
Prior art keywords
resistance
oxide
metal
semiconductor
led lamp
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.)
Withdrawn - After Issue
Application number
CN201720789221.0U
Other languages
Chinese (zh)
Inventor
朱健荣
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.)
Taizhou Jiao Guang Lighting Co Ltd
Original Assignee
Taizhou Jiao Guang Lighting 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 Taizhou Jiao Guang Lighting Co Ltd filed Critical Taizhou Jiao Guang Lighting Co Ltd
Priority to CN201720789221.0U priority Critical patent/CN207070402U/en
Application granted granted Critical
Publication of CN207070402U publication Critical patent/CN207070402U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model provides a kind of Width funtion LED lamp drive circuit of tunable optical, belongs to drive circuit technical field.It solves the problems, such as that the prior art LED lamp drive circuit scope of application is low and the brightness of LED can not be adjusted.A kind of Width funtion LED lamp drive circuit of tunable optical, including the rectification module for connecting civil power, two groups of LED lamp modules, light-adjusting module, detection module and control module, rectification module output end distinguishes connection detection module and control module, the detection module and two groups of LED lamp module difference link control modules, the voltage setting value of two groups of LED series connection of switching is provided with control module, there is light modulation input in control module, the light modulation input of light-adjusting module link control module, light-adjusting module are also connected with the output end of rectification module.The utility model realize to LED carry out luminosity regulation and make LED be applicable line voltage scope it is wide.

Description

A kind of Width funtion LED lamp drive circuit of tunable optical
Technical field
The utility model belongs to drive circuit technical field, is related to a kind of Width funtion LED lamp drive circuit of tunable optical.
Background technology
LED is the English abbreviation of light emitting diode, is a kind of semiconductor subassembly.It is more at the beginning luminous as indicator lamp, display Diode panel etc., with the appearance of white light LEDs, LED uses frequently as illumination.LED is referred to as forth generation lighting source and green Color light source, there is energy-saving and environmental protection, long lifespan, small volume.LED is because it has These characteristics, so as in the world Enjoy the favor of user.
Because LED operating voltage is commonly DC voltage, therefore need to set drive circuit in LED by the electricity of civil power Pressure is converted to DC voltage, then obtain after partial pressure the operating voltage of LED and lighted for LED.Due to many states in the world Family and the line voltage disunity in many areas, such as Chinese civil power is 220V, and Japan is 110V therefore identical LED drivings Circuit can not be general in the country of different civil powers, can only change drive circuit or user buys a transformer being adapted and turned Connect, be so all inconvenient for manufacturer and user.
Application No. CN201410190812.7 one kind is disclosed for this Chinese patent literature to be operated under full voltage High-voltage LED driving circuit, the circuit includes at least LED unit, each group comprising multiple high-voltage LEDs and multiple switch pipe and One group of additional LED module；For based on supply voltage come export string and control signal line voltage detection unit, for based on The string and control signal come control the string of each group LED unit and connect string and switch control unit, for by the electricity of access Source is converted to the rectification output unit of voltage needed for LED unit, for being controlled often based on the output voltage of rectifying output circuit The opening and closing of each switching tube in one group of LED unit and the driver element of the electric current of each high-voltage LED, thus can realize the low electricity of 120V Pressure and 277V high voltages can drive LED.
Although above-mentioned patent can realize the LED driving of 120V low-voltages and 277V high voltage civil powers, model is applicable Enclose still smaller, can not meet in office where area's LED is inserted into after civil power just can illuminate the effect used, while above-mentioned patent The brightness of LED can not be adjusted after driving LED lights, practicality is low.
The content of the invention
There is above mentioned problem in the utility model, it is proposed that a kind of Width funtion LED of tunable optical is driven for existing technology Dynamic circuit, technical problem to be solved in the utility model are that luminosity regulation how is carried out to LED and LED is applicable civil power The scope of voltage is wide.
The utility model is realized by following technical proposal：A kind of Width funtion LED lamp drive circuit of tunable optical, including For connecting the rectification module and two groups of LED lamp modules of civil power, it is characterised in that this drive circuit also includes light-adjusting module, used In the voltage that detection judges to input in low voltage range still in the detection module of high voltage range and for switching two groups of LEDs Block coupled in series or parallel connection simultaneously control two groups of LED lamp modules to press the control module that rated power works, the rectification module output end Connection detection module and control module respectively, the detection module and two groups of LED lamp module difference link control modules, the control The voltage setting value of two groups of LED series connection of switching is provided with molding block, there is light modulation input, the tune in the control module The light modulation input of optical module link control module, the light-adjusting module are also connected with the output end of rectification module, the light modulation mould Block includes resistance R37 and diode D10, diode D10 negative electrode connection resistance R37 one end, resistance R37 another termination Ground, one end of the resistance R37 connections diode D10 negative electrodes are used to input dimmer voltage signal, and light-adjusting module is according to input Light modulation input of the dimmer voltage signal output voltage signal to control module, the letter that control module inputs according to light modulation input Number regulation two groups of LED lamp modules operating power.
This drive circuit is by setting detection module to export different voltage according to different input voltage ranges For signal to control module, control module can control two groups of LED serial or parallel connections to meet the utilization of present input voltage most Bigization, while two groups of LEDs can be made to be operated by rated power, so as to which this drive circuit can adapt to wider line voltage Scope, by setting this drive circuit LED product can just being capable of plug and play in most countries.Civil power passes through rectification module Rectification is carried out, detection module and control module are sent to after rectification, when rectification module output is in low voltage range, detection Module exports is less than voltage setting value to the voltage signal of control module, and now control module makes two groups of LED lamp modules in parallel, So that low-voltage also can make the voltage for inputing to LED work enough, in high voltage range, detection module output is more than electricity Pressing the voltage signal of setting value, control module controls two groups of LED lamp module series connection, because now high voltage inputs to control module Enough LED lamp modules are used in series.After completion is in series or in parallel, and light-adjusting module does not receive input dimmer voltage During signal, the power of now control module regulation LED lamp module, LED lamp module is set to be operated on rated power.In diode When D10 negative electrode receives dimmer voltage signal with resistance R37, the voltage that light-adjusting module is inputed to rectification module carries out partial pressure So as to change the voltage signal that light-adjusting module is input to light modulation input, the signal pair that control module inputs according to light modulation input The operating power of two groups of LEDs should be adjusted.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the light-adjusting module is connected with transmission dimmer voltage The light modulator of signal, the output end of light modulator connect diode D10 negative electrode and resistance R37 one end respectively.Light modulator energy The fixed dimmer voltage signal value of enough output, also can adjust the dimmer voltage signal value of output.The light modulation exported according to light modulator Voltage signal values are different, and the operating power of two groups of LEDs can change therewith, so as to which brightness changes.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, light-adjusting module also includes triode Q20, for dividing Partial pressure unit one, partial pressure unit two and the partial pressure unit three of pressure, partial pressure unit one connect respectively rectification module output end and Triode Q20 colelctor electrode, partial pressure unit two connect the output end of rectification module and triode Q20 base stage, partial pressure respectively Unit three distinguishes the anode of the light modulation input of link control module, triode Q20 emitter stage and connection diode D10, Triode Q20 emitter stage is also connected with one end of resistance R37 ground connection.Partial pressure unit one and partial pressure unit two are to the defeated of rectification module The voltage for going out end output carries out partial pressure and turns on triode Q20, then partial pressure by partial pressure unit three is to the light modulation of control module Input, partial pressure is carried out again to partial pressure unit three by inputting dimmer voltage signal, so as to believe according to dimmer voltage Number size so as to change input to control module light modulation input voltage.Partial pressure unit one, partial pressure unit two and partial pressure Unit three has at least one resistance respectively.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, partial pressure unit one includes resistance R32 and resistance R33, Partial pressure unit two includes resistance R34 and resistance R35, and partial pressure unit three includes resistance R36, resistance R38 and resistance R39, resistance R32 One end connection rectification module output end, other end connection resistance R33 one end, resistance R33 other end connecting triode Q20 colelctor electrode, the output end of one end connection rectification module of resistance R34, other end connection resistance R35 one end, resistance R35 Other end difference connecting triode Q20 base stage, resistance R36 one end connecting triode Q20 emitter stage, resistance R36's The other end connects resistance R38 one end and diode D10 anode respectively, and the resistance R38 other end connects resistance R39 respectively One end and control module light modulation input, resistance R39 the other end ground connection.By set multiple resistance carry out partial pressures from And thermal diffusivity can be improved, make whole circuit work more stable.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the detection module includes triode Q1 and three poles Pipe Q2, for the control module output reference voltage to triode Q1 and triode Q2, rectification module exports detection voltage to three poles Pipe Q1 and triode Q2, in low voltage range, triode Q1 and triode Q2 is turned off that two groups of LED lamp modules can be made in parallel； Triode Q1 and triode Q2, which is opened, during high voltage range can make two groups of LED lamp module series connection, and the detection module also includes For the resistance R1 of partial pressure, resistance R2, resistance R3, resistance R4, resistance R5 and the resistance unit one at least with resistance, The output end of one end connection rectification module of resistance unit one, the colelctor electrode link control module of the triode Q1 simultaneously pass through electricity The other end of R1 connections resistance unit one, triode Q1 emitter stage link control modules are hindered, triode Q1 base stages pass through resistance R2 Link control module, the colelctor electrode of the triode Q2 pass through resistance R3 connecting triodes Q1 base stage, triode Q2 transmitting Pole passes through resistance R4 link control modules, the other end of triode Q2 base stage connection resistance unit one, triode Q2 base stage Resistance R5 one end, resistance R5 other end ground connection are also connected with, triode Q2 emitter stage is also associated with resistance R6, resistance R6's The other end is grounded.
Resistance unit one includes the resistance R7 and resistance R8 of series connection.Resistance R1, resistance R2, resistance R3, resistance R4, resistance R5 And resistance R7 and resistance R8 be partial pressure effect, input be the voltage in low voltage range when, do not meet triode Q1 With triode Q2 turn-on conditions, so as to which triode Q1 and triode Q2 is closed, the voltage of rectification module output is by resistance R7, electricity After hindering R8 and resistance R1 partial pressures, become a voltage signal for being less than voltage setting value to control module.What it is in input is low Triode Q1 and triode Q2 conductings during voltage in voltage range, the voltage of rectification module output pass through resistance R7, resistance R8 And the voltage flowed out by triode Q1 is added after resistance R1 partial pressures, become a voltage signal for being more than voltage setting value To control module.Triode Q1 is PNP type triode, and triode Q2 is NPN type triode.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the detection module also includes triode Q3, resistance R9 and resistance unit two, one end of base stage connection resistance unit two and resistance R9 one end of the triode Q3, resistance The output end of the other end connection rectification module of unit two, resistance R9 other end ground connection, triode Q3 emitter stage connection three Pole pipe Q2 emitter stage, the colelctor electrode connecting triode Q2 of triode Q3 colelctor electrode, total electricity of the resistance unit two Resistance is more than the total resistance value of resistance unit one.Resistance unit two includes resistance R10.By setting triode Q3 to increase height Reference voltage detection improves the scope of application of this drive circuit.Because the total resistance value of resistance unit two is more than resistance unit one Total resistance value, triode Q3 tie point is identical with triode Q2 tie point, therefore when meeting triode Q2 conditions also not Meeting triode Q3 turn-on condition, when the voltage of rectification module output is more than certain value, now triode Q3 is turned on, and three Pole pipe Q4 is also switched on, and in the case that voltage becomes big again, triode Q4 is closed, and triode Q3 is held on, until more than height Voltage range.Triode Q3 is NPN type triode.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the control module includes metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 With resistance R13, the voltage signal that detection module is exported less than voltage setting value in low voltage range gives metal-oxide-semiconductor Q4, makes metal-oxide-semiconductor Q4 is turned off, and metal-oxide-semiconductor Q5 is opened；In high voltage range, detection module exports the voltage signal more than voltage setting value to metal-oxide-semiconductor Q4, open metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 shut-offs, the drain electrode connection metal-oxide-semiconductor Q5 of metal-oxide-semiconductor Q4 grid, metal-oxide-semiconductor Q4 source electrode Resistance R11, resistance R11 other end ground connection are connected with, the grid of the metal-oxide-semiconductor Q4 connects resistance R1's and triode Q1 respectively Colelctor electrode, metal-oxide-semiconductor Q4 grid are also associated with resistance R12, resistance R12 other end ground connection, the drain electrode connection of the metal-oxide-semiconductor Q5 The output end of rectification module, metal-oxide-semiconductor Q5 source electrode are connected with diode D1, diode D1 anode connection metal-oxide-semiconductor Q5, and negative electrode connects The input of the one of which of two groups of LED lamp modules is connect, the input of another group of LED lamp module passes through resistance R13 connection rectifications Output end and output end connection the diode D1 of module negative electrode, the grid of the metal-oxide-semiconductor Q5 are connected with resistance unit three, resistance Unit three connects the output end of rectification module.
Metal-oxide-semiconductor Q4 grid receives the voltage signal that detection module is sent, and is unsatisfactory for metal-oxide-semiconductor Q4's in low voltage range Turn-on condition, now metal-oxide-semiconductor Q4 turn off, electric current flow to metal-oxide-semiconductor Q5 grid from resistance unit three, and metal-oxide-semiconductor Q5 has higher electricity Pressure meets turn-on condition, and now electric current flows through to the one of which of two groups of LEDs, another way from metal-oxide-semiconductor passed through from resistance R13 all the way Cross to another group of LED, realize the parallel connection of the units such as two groups of LED.Meet the turn-on condition of MOS Q4 pipes in high voltage range, Now metal-oxide-semiconductor Q4 is turned on, and metal-oxide-semiconductor Q5 is closed, and now there was only electric current all the way, so as to which two groups of LED lamp modules are connected.Resistance unit three Including resistance R14, resistance R15 and resistance R16.The voltage setting value minimum that both metal-oxide-semiconductor Q4 is turned on.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the control module includes being used to adjust LED mould The control chip of block operating power, the detection input of the control chip are connected with sampling unit, the control of the control chip Output end processed is connected with power adjustment unit, and the output end of two groups of LED lamp modules connects the input of power adjustment unit respectively, The output end connection sampling unit of the power adjustment unit, the power supply side of the control chip are connected with resistance R17, electricity Hinder the output end of R17 connection rectification modules, the power output end difference connecting triode Q1 of control chip emitter stage, three Pole pipe Q2 emitter stage and triode Q3 emitter stage, the voltage signal that the control chip is sent according to sampling unit are sentenced The operating power of disconnected control power adjustment unit regulation LED lamp module, the control chip have light modulation input, resistance R38 The other end connection light modulation input.Transmitting of the control chip output reference voltage to triode Q1 emitter stage, triode Q2 Pole and triode Q3 emitter stage, detected used in rectification module input voltage, together for triode Q1, triode Q2 and triode Q3 When no dimmer voltage inputs control chip by controlling power adjustment unit to make LED lamp module no matter series connection or in parallel It is operated in rated power.The light modulation input of control chip is exactly the light modulation input of control module.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the sampling unit includes resistance R18, resistance R19, resistance R20, metal-oxide-semiconductor Q6 and metal-oxide-semiconductor Q7, in low voltage range metal-oxide-semiconductor Q6 close, metal-oxide-semiconductor Q7 open make resistance R18 and Resistance R20 connects, and the detection input of control chip samples voltage as the voltage on resistance R18；In high voltage range, Metal-oxide-semiconductor Q6 is opened, and metal-oxide-semiconductor Q7 is closed, and the detection input of control chip samples voltage as the voltage on resistance R19.Due to It is different with the connected mode of two groups of LED lamp modules under high voltage range under low voltage range, ensureing different connected modes Lower two groups of LED lamp modules are all in rated power, it is necessary to by LED lamp module operating current when increasing in parallel.Pass through above-mentioned setting Control chip can be caused to adjust the operating current of LED lamp module than LED under high voltage by power adjustment unit at lower voltages The operating current of lamp module is big, so as to make the operating power of the LED lamp module in low voltage range and high voltage range It is identical.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the sampling unit also includes metal-oxide-semiconductor Q8, resistance R18 one end connects the detection input of control chip and resistance R20 one end respectively, and the other end connects the one of resistance R19 respectively End and power adjustment unit, resistance R19 other end ground connection, resistance R20 other end connection metal-oxide-semiconductor Q7 drain electrode are described Metal-oxide-semiconductor Q7 source ground, the power output end of metal-oxide-semiconductor Q7 grid connection control chip, metal-oxide-semiconductor Q7 grid and power supply are defeated Go out between holding to be connected with resistance R21 and resistance R22, the metal-oxide-semiconductor Q6 power supply to drain by resistance R22 connection control chips Output end, metal-oxide-semiconductor Q6 grid connection metal-oxide-semiconductor Q4 grid, metal-oxide-semiconductor Q8 grid connection metal-oxide-semiconductor Q7 grid, metal-oxide-semiconductor Q8 Drain electrode connection power adjustment unit, the source electrode of the metal-oxide-semiconductor Q8 and metal-oxide-semiconductor Q6 source ground.Sampling unit is above-mentioned to be set Putting can meet that Q6 closes in low voltage range, and metal-oxide-semiconductor Q7 is opened and metal-oxide-semiconductor Q8 is opened, and metal-oxide-semiconductor Q8, which is opened, causes power to adjust Save unit and power adjusting is carried out to two groups of LED lamp modules after parallel connection, meet that Q6 opens in low voltage range, metal-oxide-semiconductor Q7 is closed Close and metal-oxide-semiconductor Q8 is closed, metal-oxide-semiconductor Q8, which is closed, causes power adjustment unit to carry out power tune to two groups of LED lamp modules after series connection Section.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the power adjustment unit includes two groups of metal-oxide-semiconductors, Every group of metal-oxide-semiconductor comprises at least a metal-oxide-semiconductor, and every group of LED lamp module includes at least one LED lamp unit, and a LED lamp unit is extremely There is a LED less, the output end of two groups of LED lamp modules is all connected with one of which metal-oxide-semiconductor, and another group of metal-oxide-semiconductor connection is wherein One group of LED lamp module.Pass through the operating current for adjusting the dutycycle of metal-oxide-semiconductor to adjust in LED lamp module.So that LED mould Block is consistent with the operating power in high voltage range in low voltage range.
In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, every group of LED lamp module is respectively provided with three LED lists Member, respectively LED lamp unit one, LED lamp unit two, LED lamp unit three, LED lamp unit four, LED lamp unit five and LED list Member six, every group of three LED lamp units series connection are sequentially connected, and one group of metal-oxide-semiconductor has three metal-oxide-semiconductors, respectively metal-oxide-semiconductor Q9, MOS Pipe Q10, metal-oxide-semiconductor Q11, another group of metal-oxide-semiconductor have two metal-oxide-semiconductors, respectively metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13, metal-oxide-semiconductor Q9 leakage Pole connection connects the current output terminal of LED lamp unit one and LED lamp unit four respectively, and metal-oxide-semiconductor Q10 drain electrode connection connects respectively The current output terminal of LED lamp unit two and LED lamp unit five, metal-oxide-semiconductor Q11 drain electrode connect LED lamp unit three and LED respectively The current output terminal of unit six, the current output terminal of metal-oxide-semiconductor Q12 drain electrode connection LED lamp unit five, metal-oxide-semiconductor Q13 drain electrode connect Connect the current output terminal of LED lamp unit six, metal-oxide-semiconductor Q9 grid, metal-oxide-semiconductor Q10 grid, metal-oxide-semiconductor Q11 grid, metal-oxide-semiconductor Q12 grid and metal-oxide-semiconductor Q13 grid connect the control output end of control chip, metal-oxide-semiconductor Q9 source electrode, metal-oxide-semiconductor Q10 respectively Source electrode, metal-oxide-semiconductor Q11 source electrode, metal-oxide-semiconductor Q12 source electrode and metal-oxide-semiconductor Q13 source electrode connect resistance R19 respectively.
The operating voltage of LED lamp unit one is as the operating voltage of LED lamp unit four, the work electricity of LED lamp unit two Pressure is as the operating voltage of LED lamp unit five, the operating voltage of LED lamp unit three and the operating voltage one of LED lamp unit six Sample.By setting multiple metal-oxide-semiconductors to be adjusted respectively to operating current corresponding to LED lamp unit progress, so that regulation efficiency high, and And multiple metal-oxide-semiconductors set can radiating effect it is relatively good, improve the stability of circuit.
Compared with prior art, the Width funtion LED lamp drive circuit of this tunable optical has advantages below：
1st, the utility model can be by setting detection module to export difference according to different input voltage ranges Voltage signal to control module, control module can control two groups of LED serial or parallel connections to meet present input voltage It is wider using the scope of application is maximized.
2nd, the utility model can keep LED lamp module to be held at specified work(in the case of low pressure or high input voltage Rate is operated.
3rd, the dimmer voltage signal value that the utility model can export according to light modulator is different, the operating power of two groups of LEDs It can change therewith, so as to which brightness changes.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit structure connection diagram of the present utility model.
Fig. 3 is the structural representation of the utility model detection module.
Fig. 4 is the structural representation of the utility model control module.
Fig. 5 is the structural representation of the utility model rectification module.
Fig. 6 is the structural representation of two groups of LED lamp modules of the utility model.
Fig. 7 is the structural representation of the utility model light-adjusting module.
Fig. 8 is that the utility model light modulation input inputs different voltages and control LED lamp module total working changed power Schematic diagram.
In figure, 1, civil power；2nd, rectification module；3rd, LED lamp module；4th, detection module；5th, control module；6th, light-adjusting module； 7th, light modulator；8th, control chip；9th, sampling unit；10th, power adjustment unit；11st, LED lamp unit one；12nd, LED lamp unit two； 13rd, LED lamp unit three；14th, LED lamp unit four；15th, LED lamp unit five；16th, LED lamp unit six；17th, full bridge rectifier bridge.
Embodiment
It is specific embodiment of the utility model below, and the technical solution of the utility model is made further with reference to accompanying drawing Description, but the utility model is not limited to these embodiments.
A points in Fig. 3 are connected with the A points in Fig. 5 respectively with the A points in Fig. 4, and the B points in Fig. 3 connect with the B points in Fig. 4 Connect, the C points in Fig. 3 are connected with the C points in Fig. 4, and the D points in Fig. 3 are connected with the D points in Fig. 4, the E points in Fig. 3 and the E in Fig. 4 Point connection, and the F points in Fig. 4 are connected with the F points in Fig. 6, and the G points in Fig. 4 are connected with the G points in Fig. 6, the H points in Fig. 4 and H points in Fig. 6 are connected, and the I points in Fig. 4 are connected with the I points in Fig. 6, and the J points in Fig. 4 are connected with the J points in Fig. 6, the K in Fig. 4 Point is connected with the K points in Fig. 6, and the L points in Fig. 4 are connected with the L points in Fig. 6, and the M points in Fig. 4 are connected with the M points in Fig. 6, Fig. 7 In O points be connected with the O points in Fig. 3, the Q points in Fig. 7 are connected with the Q points in Fig. 4, and the P points in the P points in Fig. 7 and Fig. 4 connect Connect, so as to form the circuit diagram in Fig. 2.
As shown in figure 1, a kind of Width funtion LED lamp drive circuit of tunable optical, including for connecting the rectification module of civil power 1 2nd, two groups of LED lamp modules 3, for detect judge input voltage in low voltage range still in the detection module of high voltage range 4 and for switching two groups of serial or parallel connections of LED lamp module 3 and controlling two groups of LED lamp modules 3 to press the control mould of rated power work Block 5.The output end of rectification module 2 distinguishes connection detection module 4 and control module 5, detection module 4 and two groups of LED lamp modules 3 are distinguished Link control module 5.The voltage setting value of two groups of LED series connection of switching is provided with control module 5.Have in control module 5 and adjust Light input end, the light modulation input of the link control module 5 of light-adjusting module 6, light-adjusting module 6 are also connected with the output end of rectification module 2.
As shown in Figure 2 and Figure 7, light-adjusting module 6 includes resistance R37 and diode D10, diode D10 negative electrode connection electricity R37 one end is hindered, resistance R37 other end ground connection, is used to input dimmer voltage between diode D10 negative electrode and resistance R37 Signal, light-adjusting module 6 is according to light modulation input of the dimmer voltage signal output voltage signal of input to control module 5, control The operating power for two groups of LED lamp modules 3 of Signal Regulation that module 5 inputs according to light modulation input.Light-adjusting module 6 is connected with transmission The light modulator 7 of dimmer voltage signal, the output end of light modulator 7 connect respectively diode D10 negative electrode and resistance R37 one End.Light modulator 7 includes process chip in the present embodiment, the output end of process chip connect respectively diode D10 negative electrode and Resistance R37 one end, process chip earth terminal ground connection.Alternatively light modulator 7 includes that burning voltage can be exported Power circuit, the positive pole of power circuit connect diode D10 negative electrode and resistance R37 one end, negative pole ground connection respectively.
As shown in Figure 2 and Figure 7, light-adjusting module 6 also includes triode Q20, partial pressure unit one, partial pressure unit for partial pressure Two and partial pressure unit three, partial pressure unit one connect the output end of rectification module 2 and triode Q20 colelctor electrode, partial pressure respectively Unit two connects the output end of rectification module 2 and triode Q20 base stage respectively, and partial pressure unit three distinguishes link control module The anode of 5 light modulation input, triode Q20 emitter stage and connection diode D10, triode Q20 emitter stage also connect One end of connecting resistance R37 ground connection.Partial pressure unit one includes resistance R32 and resistance R33, and partial pressure unit two includes resistance R34 and electricity R35 is hindered, partial pressure unit three includes resistance R36, resistance R38 and resistance R39, the output of resistance R32 one end connection rectification module 2 End, other end connection resistance R33 one end, resistance R33 other end connecting triode Q20 colelctor electrode, one end of resistance R34 Connect the output end of rectification module 2, other end connection resistance R35 one end, resistance R35 other end difference connecting triode Q20 base stage, resistance R36 one end connecting triode Q20 emitter stage, the resistance R36 other end connect resistance R38's respectively One end and diode D10 anode, the resistance R38 other end connect resistance R39 one end and the tune of control module 5 respectively Light input end, resistance R39 other end ground connection.
As shown in Figure 2 and Figure 7, light-adjusting module 6 is also included for electric capacity C18, the electric capacity C19 of filtering and for voltage stabilizing Voltage-regulator diode ZD3, also prevent the diode D9 of electric current reverse circulated.Voltage-regulator diode ZD3 cathode connected to the transistor Q20 Base stage, voltage-regulator diode ZD3 plus earth, triode Q20 emitter stage connection diode D9 anode, diode D9's Negative electrode connection resistance R36 one end, resistance R37 one end and electric capacity C18 one end, electric capacity C18 other end ground connection.Electric capacity The light modulation input of C19 one end link control module 5, the electric capacity C19 other end are grounded respectively.
Alternatively：Light-adjusting module 6 includes a metal-oxide-semiconductor three, and the grid of the metal-oxide-semiconductor connects the defeated of light modulator 7 Go out end, source electrode drains by the light modulation input of divider resistance link control module 5 and passes through divider resistance connection rectification module 2 Output end.The dutycycle of the control metal-oxide-semiconductor three of light modulator 7 inputs to the voltage for dimming input of control module 5 so as to adjust Signal, chief engineer's rate of doing work of two groups of LED lamp modules 3 is adjusted by control module 5.
As shown in Figures 2 and 3, detection module 4 includes triode Q1 and triode Q2.The output reference voltage of control module 5 To triode Q1 and triode Q2, rectification module 2 exports detection voltage to triode Q1 and triode Q2, in low voltage range Triode Q1 and triode Q2 are turned off, and detection module 4 exports the voltage signal less than voltage setting value to control module 5, control Molding block 5 controls two groups of LED lamp modules 3 in parallel；In high voltage range, triode Q1 and triode Q2 are opened, detection module 4 voltage signals for exporting more than voltage setting value control two groups of LED lamp modules 3 to connect to control module 5, control module 5.
As shown in Figures 2 and 3, detection module 4 also include for the resistance R1 of partial pressure, resistance R2, resistance R3, resistance R4, Resistance R5 and the resistance unit one at least with a resistance.The output end of one end connection rectification module 2 of resistance unit one, Triode Q1 colelctor electrode link control module 5 simultaneously passes through the other end of resistance R1 connections resistance unit one, triode Q1 transmittings Pole link control module 5, for triode Q1 base stages by resistance R2 link control modules 5, triode Q2 colelctor electrode passes through resistance R3 connecting triodes Q1 base stage, triode Q2 emitter stage are connected by resistance R4 link control modules 5, triode Q2 base stage The other end of connecting resistance unit one, triode Q2 base stage are also connected with resistance R5 one end, resistance R5 other end ground connection, three poles Pipe Q2 emitter stage is also associated with resistance R6, resistance R6 other end ground connection.Resistance unit one includes the resistance R7 and electricity of series connection Hinder R8, the output end of resistance R7 one end connection rectification module 2, other end connection resistance R8 one end, the resistance R8 other end Connecting triode Q2 base stage and resistance R1 one end respectively.
As shown in Figures 2 and 3, detection module 4 also includes triode Q3, resistance R9 and resistance unit two.Triode Q3 One end of base stage connection resistance unit two and resistance R9 one end, the other end connection rectification module 2 of resistance unit two Output end, resistance R9 other end ground connection, triode Q3 emitter stage connecting triode Q2 emitter stage, triode Q3 current collection Pole connecting triode Q2 colelctor electrode, the total resistance value of resistance unit two are more than the total resistance value of resistance unit one.Resistance unit Two, which include resistance R10 and resistance R23, resistance R10 and resistance R23, connects, resistance R10 one end connecting triode Q3 base stage, The output end of resistance R23 one end connection rectification module 2.Detection module 4 also includes being used to filter and the electric capacity C1 and electricity of energy storage Hold C2, electric capacity C1 one end connecting triode Q3 base stage, other end ground connection, electric capacity C2 one end connecting triode Q2 base Pole, other end ground connection.
Alternatively：Detection module 4 includes comparator, and one of input of comparator passes through divider resistance The output end of rectification module 2 is connected, another input provides benchmark by divider resistance link control module 4, control module 4 Voltage, show to work as when the voltage of the input input of comparator connection rectification module 2 provides reference voltage higher than control module 4 Preceding civil power input is in high voltage range, and now comparator output voltage signal controls two groups to control module 4, control module 4 LED lamp module 3 is connected, otherwise output voltage signal does not control two groups of LED lamp modules to comparator to control module 4, control module 4 3 is in parallel.
As shown in Figure 2 and Figure 4, control module 5 includes metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 and resistance R13, is examined in low voltage range Survey the voltage signal that module 4 export less than voltage setting value and give metal-oxide-semiconductor Q4, turn off metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 openings；In high electricity When pressing scope, the voltage signal that detection module 4 export more than voltage setting value gives metal-oxide-semiconductor Q4, makes metal-oxide-semiconductor Q4 openings, metal-oxide-semiconductor Q5 Shut-off.Metal-oxide-semiconductor Q4 drain electrode connection metal-oxide-semiconductor Q5 grid, metal-oxide-semiconductor Q4 source electrode are connected with resistance R11, and resistance R11's is another End ground connection.Metal-oxide-semiconductor Q4 grid connects resistance R1 and triode Q1 colelctor electrode respectively, and metal-oxide-semiconductor Q4 grid is also associated with electricity Hinder R12, resistance R12 other end ground connection.The output end of metal-oxide-semiconductor Q5 drain electrode connection rectification module 2, metal-oxide-semiconductor Q5 source electrode connect Diode D1, diode D1 anode connection metal-oxide-semiconductor Q5 are connected to, negative electrode connects the input of the one of which of two groups of LED lamp modules 3 End, the input of another group of LED lamp module 3 connect diode by the output end and output end of resistance R13 connections rectification module 2 D1 negative electrode.Metal-oxide-semiconductor Q5 grid is connected with resistance unit three, and resistance unit three connects the output end of rectification module 2.Resistance list Member three includes resistance R14, resistance R15 and resistance R16.The voltage setting value minimum that both metal-oxide-semiconductor Q4 is turned on.The one of resistance R14 End connection metal-oxide-semiconductor Q5 grid, other end connection resistance R15 one end, resistance R15 other end connection resistance R16 one end, The resistance R16 other end is connected with diode D2, diode D2 anode connection resistance R13, negative electrode connection resistance R16.Resistance Electric capacity C6 is provided between R15 and resistance R16.This control module 5 also includes voltage regulation unit, and voltage regulation unit includes voltage-regulator diode ZD1, resistance R28 and electric capacity C3, resistance R28 and electric capacity C3 both ends difference connecting triode Q5 source electrode and resistance R14's One end, voltage-regulator diode ZD1 anode connecting triode Q5 source electrode, the one of voltage-regulator diode ZD1 negative electrode connection resistance R14 End.
As shown in Figure 2 and Figure 4, control module 5 includes being used for the control chip 8 for adjusting the operating power of LED lamp module 3.Control Coremaking piece 8 uses model L1050 chip.The detection input of control chip 8 is connected with sampling unit 9, control chip 8 Control output end is connected with power adjustment unit 10, and the output end of two groups of LED lamp modules 3 connects power adjustment unit 10 respectively Input.The output end connection sampling unit 9 of power adjustment unit 10.The power supply side of control chip 8 is connected with resistance The output end of R17, resistance R17 connection rectification module 2, the power output end difference connecting triode Q1 of control chip 8 transmitting The emitter stage of pole, triode Q2 emitter stage and triode Q3, and by resistance R2 connecting triodes Q1 base stage, pass through resistance R2 and resistance R3 difference connecting triodes Q2 colelctor electrode and triode Q3 colelctor electrode.Control chip 8 is sent out according to sampling unit 9 The voltage signal sent judges and control the operating power that power adjustment unit 10 adjusts LED lamp module 3.Control chip 8 has Five control output ends, respectively control output end one, control output end two, control output end three, control output end four, control Output end five.Resistance R17 both ends are connected to electric capacity C7 and electric capacity C8, electric capacity C7 and electric capacity C8 other end ground connection.Electricity Hold C7 and electric capacity C8 to be used to filter, connected between resistance R17 and rectification module 2 by resistance R13, resistance R13 both ends difference Connect the output end of resistance R17 and rectification module 2.The power output end of control chip 8 is connected with defeated for stability contorting chip 8 The resistance R30 and electric capacity C15 and electric capacity C16 of the voltage gone out, resistance R30 one end connection control chip 8, other end connection electric capacity C15 one end, electric capacity C15 other end ground connection, electric capacity C16 one end connection control chip 8, other end ground connection.Control chip 8 It is also associated with electric capacity C17, electric capacity C17 other end ground connection.Control chip 8, which has, dims input, and the light modulation of control chip 8 is defeated Enter the light modulation input that end is exactly control module 5, resistance R38, resistance R39 and electric capacity C19 connect light modulation input respectively.
Alternatively：Control module 5 includes microprocessor, power adjustment unit 10, sampling unit 9 and relay Device one, relay two, two groups of LED lamp modules 3 connect power adjustment unit 10 respectively, and sampling unit 9 connects power adjustment unit 10, sampling unit 9 connects microprocessor, and power adjustment unit 10 connects the output end of microprocessor, and the normally closed of relay one is opened Close and set between one of which LED lamp module 3 and the output end of rectification module 2, the current input terminal of this group of LED lamp module 3 with The normally closed switch of relay two, the coil and relay of relay one are set between the current output terminal of another group of LED lamp module 3 Two coil connects the output end of microprocessor respectively.Microprocessor in civil power high voltage range control relay one it is normally closed Switch off, the normally closed switch closure of relay two, so as to which two groups of LED lamp modules are connected；Microprocessor is at civil power in low electricity The normally closed switch closure of control relay one, the normally closed switch of relay two disconnect when pressing scope, so as to two groups of LED lamp modules simultaneously Connection.
As shown in Figure 2 and Figure 4, sampling unit 9 includes resistance R18, resistance R19, resistance R20, metal-oxide-semiconductor Q6 and metal-oxide-semiconductor Q7, In low voltage range, metal-oxide-semiconductor Q6 is closed, and metal-oxide-semiconductor Q7, which is opened, makes resistance R18 and resistance R20 connect, and the detection of control chip 8 is defeated Enter end and sample voltage as the voltage on resistance R18；In high voltage range, metal-oxide-semiconductor Q6 is opened, and metal-oxide-semiconductor Q7 is closed, and controls core The detection input of piece 8 samples voltage as the voltage on resistance R19.Sampling unit 9 also includes metal-oxide-semiconductor Q8 and electric capacity C13, electricity Resistance R18 one end connects the detection input of control chip 8 and resistance R20 one end respectively, and the other end connects resistance R19's respectively One end and power adjustment unit 10, resistance R19 other end ground connection, resistance R20 other end connection metal-oxide-semiconductor Q7 drain electrode. Metal-oxide-semiconductor Q7 source ground, the power output end of metal-oxide-semiconductor Q7 grid connection control chip 8, metal-oxide-semiconductor Q7 grid and power supply Resistance R21 and resistance R22 are connected between output end, metal-oxide-semiconductor Q6 drain electrode passes through the power supply of resistance R22 connections control chip 8 Output end, metal-oxide-semiconductor Q6 grid connection metal-oxide-semiconductor Q4 grid, metal-oxide-semiconductor Q8 grid connection metal-oxide-semiconductor Q7 grid, metal-oxide-semiconductor Q8 Drain electrode connection power adjustment unit 10, metal-oxide-semiconductor Q8 source electrode and metal-oxide-semiconductor Q6 source ground.Electric capacity C13 both ends difference Connect metal-oxide-semiconductor Q7 grid and ground connection.
Alternatively：Sampling unit 9 includes current sensor, and the electric current of current sensor connection control chip is adopted Sample input, control chip 8 judge to show that current civil power is in high voltage range or low according to the input voltage of detection module Voltage range, the interior current setting value one that rated power work is pressed provided with two groups of LED lamp modules 3 of low voltage range of control chip 8 And two groups of LED lamp modules 3 of low voltage range press the current setting value two of rated power work.In low voltage range, control The electric current that chip 8 is sent according to current sensor, when both are different, adjusts power adjusting compared with current setting value one Unit 10 changes electric current in circuit until both are consistent, and in high voltage range, control chip 8 is sent according to current sensor Electric current compared with current setting value two when both are different, regulation power adjustment unit 10 change circuit in electric current it is straight It is consistent to both.So that two groups of LED lamp modules 3 are enough operated in rated power when connecting and be in parallel.
As shown in Figure 2 and Figure 4, power adjustment unit 10 includes two groups of metal-oxide-semiconductors, and every group of metal-oxide-semiconductor comprises at least a MOS Pipe, every group of LED lamp module 3 include at least one LED lamp unit, and a LED lamp unit at least has a LED, two groups of LED The output end of lamp module 3 is all connected with one of which metal-oxide-semiconductor, another group of metal-oxide-semiconductor connection one of which LED lamp module 3.
As shown in Figure 2 and Figure 6, preferably, every group of LED lamp module 3 is respectively provided with three LED lamp units, respectively LED Unit 1, LED lamp unit 2 12, LED lamp unit 3 13, LED lamp unit 4 14, LED lamp unit 5 15 and LED lamp unit six 16, every group of three LED lamp units series connection is sequentially connected, and one group of metal-oxide-semiconductor has three metal-oxide-semiconductors, respectively metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, another group of metal-oxide-semiconductor have two metal-oxide-semiconductors, respectively metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13, metal-oxide-semiconductor Q9 drain electrode Connection connects the current output terminal of LED lamp unit 1 and LED lamp unit 4 14 respectively, and metal-oxide-semiconductor Q10 drain electrode connection connects respectively The current output terminal of LED lamp unit 2 12 and LED lamp unit 5 15 is connect, metal-oxide-semiconductor Q11 drain electrode connects LED lamp unit three respectively 13 and the current output terminal of LED lamp unit 6 16.The current output terminal of metal-oxide-semiconductor Q12 drain electrode connection LED lamp unit 5 15, MOS The current output terminal of pipe Q13 drain electrode connection LED lamp unit 6 16, metal-oxide-semiconductor Q9 grid, metal-oxide-semiconductor Q10 grid, metal-oxide-semiconductor The grid of Q11 grid, metal-oxide-semiconductor Q12 grid and metal-oxide-semiconductor Q13 connects the control output end of control chip 8, metal-oxide-semiconductor Q9 respectively Source electrode, metal-oxide-semiconductor Q10 source electrode, metal-oxide-semiconductor Q11 source electrode, metal-oxide-semiconductor Q12 source electrode and metal-oxide-semiconductor Q13 source electrode connect electricity respectively Hinder R19.
The operating voltage of LED lamp unit 1 as the operating voltage of LED lamp unit 4 14, LED lamp unit 2 12 Operating voltage is as the operating voltage of LED lamp unit 5 15, operating voltage and the LED lamp unit 6 16 of LED lamp unit 3 13 Operating voltage it is the same.
As shown in Figure 2 and Figure 4, power adjustment unit 10 also includes metal-oxide-semiconductor Q14, metal-oxide-semiconductor Q15, metal-oxide-semiconductor Q16, metal-oxide-semiconductor Q17, metal-oxide-semiconductor Q18, electric capacity C12, resistance 24, resistance 25, resistance 26 and resistance 27.Metal-oxide-semiconductor Q13 source electrode connection resistance 24 One end, the other end connection resistance R19 of resistance 24 one end, metal-oxide-semiconductor Q14 grid, metal-oxide-semiconductor Q15 grid, metal-oxide-semiconductor Q16 Grid is all connected with metal-oxide-semiconductor Q13 grid, and metal-oxide-semiconductor Q13 grid connects the control output end five of control chip 8, metal-oxide-semiconductor Q14's Drain electrode, metal-oxide-semiconductor Q15 drain electrode and metal-oxide-semiconductor Q16 drain electrode are all connected with metal-oxide-semiconductor Q13 drain electrode, metal-oxide-semiconductor Q14 source electrode connection electricity Hinder R25 one end, resistance R25 one end connection resistance R19 one end, metal-oxide-semiconductor Q15 source electrode connection resistance R26 one end, electricity R26 one end connection resistance R19 one end is hindered, metal-oxide-semiconductor Q16 source electrode connection resistance R27 one end, resistance R27 one end connects Connecting resistance R19 one end.
Metal-oxide-semiconductor Q17 grid and metal-oxide-semiconductor Q18 grid are all connected with metal-oxide-semiconductor Q11 grid, metal-oxide-semiconductor Q17 drain electrode and Metal-oxide-semiconductor Q18 drain electrode is all connected with metal-oxide-semiconductor Q11 drain electrode, and metal-oxide-semiconductor Q17 source electrode connects resistance R19 with metal-oxide-semiconductor Q18 source electrode One end.The control output end one of metal-oxide-semiconductor Q9 grid connection control chip 8, metal-oxide-semiconductor Q10 grid connect control chip 8 Control output end two, the metal-oxide-semiconductor Q11 control output end three of grid connection control chip 8, metal-oxide-semiconductor Q12 grid connection control The control output end four of chip 8.Electric capacity C12 one end connection metal-oxide-semiconductor Q9 grid other end ground connection, is filtered.Pass through increase Metal-oxide-semiconductor Q14, metal-oxide-semiconductor Q15, metal-oxide-semiconductor Q16, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18, power adjusting efficiency is improved, and in two groups of LED There are last electric current outflow end multiple metal-oxide-semiconductors to be adjusted after the LED lamp unit series connection of lamp module 3, further improve radiating With power adjusting effect.
Alternatively：Power adjustment unit 10 includes two groups of metal-oxide-semiconductors, and every group of metal-oxide-semiconductor extremely has a metal-oxide-semiconductor, Respectively metal-oxide-semiconductor one and metal-oxide-semiconductor two, the drain electrode of the current output terminal connection metal-oxide-semiconductor one of LED lamp unit 3 13, the grid of metal-oxide-semiconductor one Pole connects control chip 8, the source electrode connection resistance R19 of metal-oxide-semiconductor one, the current output terminal connection metal-oxide-semiconductor two of LED lamp unit 6 16 Drain electrode, the grid connection control chip 8 of metal-oxide-semiconductor two, the source electrode connection resistance R19 of metal-oxide-semiconductor two.
As shown in Figure 2 and Figure 4, control module 5 also includes the electric capacity C9, electric capacity 10, electric capacity C11 and for preventing for filtering Only the diode D3 of electric current reverse circulated, diode D4, diode D5 and diode D6, diode D3 anode connection LED The output end of unit 3 13, the input of diode D3 negative electrode connection LED lamp unit 4 14；Diode D4 anode connection The output end of LED lamp unit 4 14, the output end of diode D4 negative electrode connection LED lamp unit 1；Diode D5 anode Connect the output end of LED lamp unit 5 15, the output end of diode D5 negative electrode connection LED lamp unit 2 12；Diode D6's Anode connects the output end of LED lamp unit 6 16, the output end of diode D5 negative electrode connection LED lamp unit 3 13.Electric capacity C9 One end, one end of electric capacity 10 and electric capacity C11 one end ground connection, electric capacity C9 other end connection diode D4 negative electrode, electric capacity 10 other end connection diode D5 negative electrode, electric capacity C11 other end connection diode D6 negative electrode.
As shown in Figure 2 and Figure 4, control module 5 also includes the input voltage for being used to adjust the power factor harmonic of civil power 1 Detection unit.Input voltage measurement unit include metal-oxide-semiconductor Q19, resistance R29, voltage-regulator diode ZD2, resistance R31, resistance R25, Resistance R26 and electric capacity C14.The output end of resistance R25 one end connection rectification module 2, other end connection resistance R26 one end, The voltage detecting end of civil power 1 of resistance R26 other end connection control chip 8, resistance R29 one end, voltage-regulator diode ZD2 the moon One end of pole, resistance R31 one end and electric capacity C14 connects the voltage detecting end of civil power 1 of control chip 8 respectively.Resistance R29's Other end connection metal-oxide-semiconductor Q19 drain electrode, the grid connection metal-oxide-semiconductor Q4 of metal-oxide-semiconductor Q19 drain electrode grid, metal-oxide-semiconductor Q19 source Pole is grounded.Voltage-regulator diode ZD2 plus earth, the resistance R31 other end and the other end ground connection of electric capacity 14.By above-mentioned Control chip 8, and energy will not be punctured by setting the voltage for the voltage detecting end of civil power 1 input that can remain control chip 8 Enough adjust the power factor harmonic of civil power 1.
As shown in figure 5, rectification module 2 includes being used for the piezo-resistance VR1 and full-bridge rectification for preventing that current surge from impacting Bridge 18 and electric capacity C4 and electric capacity C5 for filtering.Piezo-resistance VR1 is connected in parallel between civil power 1 and full bridge rectifier bridge 18, full-bridge Alternating voltage can be changed into DC voltage by the circuit of rectifier bridge 18, and this is prior art, is repeated no more.C5 points of electric capacity C4 and electric capacity It is not in parallel with full bridge rectifier bridge 18.The output end of full bridge rectifier bridge 18 connects resistance R7, resistance R23, resistance 13, metal-oxide-semiconductor respectively Q5 and resistance 25.There are two groups of LED lamp modules 3 to be powered detection module 4 and the control module 5 with this.As another A kind of scheme rectification module 2 includes rectifier, and rectification is carried out to civil power by rectifier.
It is the course of work of the present utility model below：
During the Width funtion LED lamp drive circuit work of this tunable optical, when civil power 1 turns on rectification module 2, rectification module 2 Exported after carrying out rectification to civil power 1 to detection module 4 and control module 5.
The voltage exported after the rectification of rectification module 2 after resistance R13 and resistance R17 partial pressures by exporting to control chip 8 Power supply side be powered, control chip 8 is started working, the power output end output reference voltage of control chip 8 is given The emitter stage of triode Q1 emitter stage, triode Q2 emitter stage and triode Q3, while exported after the rectification of rectification module 2 Voltage is given to triode Q1 colelctor electrode after resistance R7 and resistance R8 and resistance R1 partial pressures, defeated after the rectification of rectification module 2 The voltage gone out is given to triode Q2 base stage, the voltage exported after the rectification of rectification module 2 after resistance R7 and resistance R8 partial pressures Triode Q3 base stage, triode Q2 colelctor electrode and triode Q3 colelctor electrode are given to after resistance R10 and R23 partial pressure Also the reference voltage of the output of control chip 8 is obtained.
When civil power 1 is that low voltage range inputs, base stage and three poles without sufficiently large control source to triode Q2 Pipe Q3 base stages so that triode Q2 and triode Q3 do not produce biasing, in the case where triode Q2 does not have generation to be biased off so that Triode Q1 is also without biasing is produced, so as to which triode Q1 is turned off.Therefore resistance R7 and resistance R8 and resistance R1 partial pressures are passed through Startup voltage of the voltage less than the Q4 of metal-oxide-semiconductor of the Q4 of metal-oxide-semiconductor grid is given to afterwards.The Q4 of metal-oxide-semiconductor startup voltage both metal-oxide-semiconductor The minimum i.e. voltage setting value of Q4 conductings.Voltage stream after the rectification of rectification module 2 in the case that the Q4 of metal-oxide-semiconductor is closed To metal-oxide-semiconductor Q5 grid, reach metal-oxide-semiconductor Q5 startup voltage, now metal-oxide-semiconductor Q5 is turned on.After metal-oxide-semiconductor Q5 conductings, rectification module 2 Rectification after electric current be flowed into by resistance R13 in LED lamp unit 1, and flow successively through LED lamp unit 2 12 and LED Unit 3 13, while the electric current after the rectification of rectification module 2 is flowed into LED lamp unit 4 14 by diode D1, then successively LED lamp unit 5 15 and LED lamp unit 6 16 are flowed into, so as to which two groups of LED lamp modules 3 form parallel connection, so as in low electricity In the range of pressure there is enough operating voltages to be worked for LED lamp module 3.
When civil power 1 is when high voltage range inputs and is less than 200V, because total resistance of resistance unit two is more than resistance Total resistance of unit one, therefore at this moment without sufficiently large control source to triode Q3 base stages, but meet triode Q2's Turn-on condition, triode Q3 are closed, triode Q2 conductings.When civil power 1 is more than 200V, triode Q2 is held on, triode Q3 is also held on, and when more than 220V, triode Q2 is closed, and triode Q3 is held on.By above-mentioned setting so as to full Foot expands the scope of this drive circuit matching, so as to which practicality is higher.When triode Q2 triode Q3 is simultaneously turned on one section Between avoid occurring when high voltage input, the generation of situation that triode Q3 and triode Q2 are simultaneously closed off.
In at least one conducting of triode Q2 and triode Q3 so that triode Q1 is also switched on, so that metal-oxide-semiconductor Q4 Grid not only obtain control chip after voltage of the voltage after the rectification of rectification module 2 after partial pressure and triode Q1 conductings The reference voltage of 8 outputs, so as to the startup voltage more than metal-oxide-semiconductor Q4, turn on metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q4 conductings drag down metal-oxide-semiconductor Q5 grid voltage, so that metal-oxide-semiconductor Q5 is closed.Therefore after the electric current after the rectification of rectification module 2 is by resistance R13, so as to LED Lamp unit 1 flows to LED lamp unit 6 16 successively, and two groups of LED lamp modules 3 are connected.
Due to the connected mode difference under low voltage range with two groups of LED lamp modules 3 under high voltage range, ensureing The general power that two groups of LED lamp modules 3 add up under different connected modes is all in total rated power, it is necessary to by when increasing in parallel The operating current of LED lamp module 3.
In low voltage range, metal-oxide-semiconductor Q6 is closed, and metal-oxide-semiconductor Q7 and metal-oxide-semiconductor Q8 are opened, and metal-oxide-semiconductor Q8 is opened and dragged down metal-oxide-semiconductor Q12, metal-oxide-semiconductor Q13, metal-oxide-semiconductor Q14, metal-oxide-semiconductor Q15 and metal-oxide-semiconductor Q16 grid voltage, so as to which they are closed.Metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 conducting, so as in low voltage range control chip 8 by metal-oxide-semiconductor Q9, Metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 adjust the operating power of two groups of LED lamp modules 3.Control chip 8 is set Surely there is sampled voltage setting value corresponding to the total rated power of two groups of LED lamp modules 3, in low voltage range due to metal-oxide-semiconductor Q7 Open, thus control chip 8 gather be resistance R18 voltage, control chip 8 according to sampling return voltage output it is different Duty cycle signals control metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 are according to corresponding dutycycle work Make, until control chip 8 sample voltage be equal to sampled voltage setting value, be equal to sampled voltage setting value in the voltage of sampling When, control chip 8 controls metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 according to current dutycycle Work.
In high voltage range, metal-oxide-semiconductor Q6 is opened, and metal-oxide-semiconductor Q7 and metal-oxide-semiconductor Q8 are closed, and metal-oxide-semiconductor Q9 to metal-oxide-semiconductor Q18 is led It is logical, so as to which in high voltage range, control chip 8 passes through the work work(of metal-oxide-semiconductor Q9 to metal-oxide-semiconductor Q18 two groups of LED lamp modules 3 of regulation Rate.In high voltage range therefore control chip 8 gather be resistance R19 voltage, control chip 8 according to sampling return electricity Pressure exports different duty cycle signals and controls metal-oxide-semiconductor Q9 to metal-oxide-semiconductor Q18 according to corresponding duty cycle, until control chip 8 The voltage of sampling is equal to sampled voltage setting value, and when the voltage of sampling is equal to sampled voltage setting value, control chip 8 controls Metal-oxide-semiconductor Q9 to metal-oxide-semiconductor Q18 is according to current duty cycle.Controlled due to two groups of LED lamp modules 3 in series connection and when in parallel The resistance object that chip 8 samples is different, and the voltage on resistance R19 sampled when in parallel is the voltage on the resistance R18 of sampling Twice, but the operating voltage due to LED lamp unit 1 is as the operating voltage of LED lamp unit 4 14, LED lamp unit 2 12 Operating voltage as the operating voltage of LED lamp unit 5 15, the operating voltage of LED lamp unit 3 13 and LED lamp unit six 16 operating voltage is the same, therefore twice when when reaching identical sampled voltage setting value, electric current reaches series connection during parallel connection, So as to two groups of LED lamp modules 3 by this drive circuit can series connection and it is in parallel when reach identical rated power.
The Width funtion LED lamp drive circuit of this tunable optical also has light-adjusting module 6, and light modulation mould is inputed to by light modulator 7 The voltage signal of block 6 is different, so as to adjust the operating power of LED lamp module 3 so that the brightness of LED lamp module 3 becomes Change.When the voltage after rectification module 2 exports rectification, it is given to triode Q20's after resistance R32 and resistance R33 partial pressures Colelctor electrode, triode Q20 base stage is given to after resistance R34 and resistance R35 partial pressures.So that triode Q20 is turned on, and And it is input to control chip 8 after resistance R36 to resistance R39 carries out partial pressure again.In no access light modulator 7 or light modulator 7 without output dimmer voltage signal when, two groups of LED lamp modules 3 by this drive circuit can series connection and it is in parallel when reach phase Same rated power.When light modulator 7 exports dimmer voltage signal, so that the voltage assigned on resistance R37 produces change, The voltage inputed to after triode Q20 conductings on resistance R38 and resistance R39 changes, so as to be input to light modulation input Change.Different according to the voltage of input, control chip 8 controls two groups of LED lamp modules to be operated with different general powers.Low Control chip 8 is by adjusting metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 duty during voltage range Than the operating power for adjusting two groups of LED lamp modules 3, in high voltage range, control chip 8 is by adjusting metal-oxide-semiconductor Q9 to metal-oxide-semiconductor The operating power of Q18 two groups of LED lamp modules 3 of regulation.
The scope that the voltage of light-adjusting module 6 is inputed to as preferred light modulator 7 is 0 to 10V, corresponding to be input to control core Voltage on piece 8 arrives 2.5V for 0.As shown in figure 8, when light modulator 7 inputs 10V voltage signal, the light modulation of control chip 8 is defeated The voltage for entering end input is 2.5V, and control chip 8 controls two groups of LED lamp modules 3 to be worked according to full rated power.Work as control chip When the voltage of 8 light modulation input input is less than 0.15V, control LED lamp module 3 does not work, and is inputted in the light modulation of control chip 8 When the voltage of end input is more than 0.2V, the voltage of input is bigger, and control chip 8 controls the operating power of LED lamp module 3 bigger, So as to which LED lamp module 3 is brighter.When the voltage being input on control chip 8 is 1.7V, control chip 8 controls two groups of LED lamp modules 3 work according to the 80% of rated power；When the voltage being input on control chip 8 is 1.7V, control chip 8 controls two groups of LED Lamp module 3 works according to the 80% of rated power；When the voltage being input on control chip 8 is 1.15V, control chip 8 controls Two groups of LED lamp modules 3 work according to the 60% of rated power；When the voltage being input on control chip 8 is 0.73V, core is controlled Piece 8 controls 40% work of two groups of LED lamp modules 3 according to rated power.Light modulator 7 inputs to the voltage signal of light-adjusting module 6 It can be manually set.It is prior art that control chip 8, which controls the metal-oxide-semiconductor in power adjustment unit 10 to carry out duty cycle adjustment, This is not repeated.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although civil power 1, rectification module 2, LED lamp module 3, detection module 4, control module 5, tune have more been used herein Optical module 6, light modulator 7, control chip 8, sampling unit 9, power adjustment unit 10, LED lamp unit 1, LED lamp unit two 12nd, the art such as LED lamp unit 3 13, LED lamp unit 4 14, LED lamp unit 5 15, LED lamp unit 6 16, full bridge rectifier bridge 17 Language, but it is not precluded from the possibility using other terms.It is used for the purpose of more easily describing and explaining this using these terms The essence of utility model；Any additional limitation is construed as all to disagree with the utility model spirit.

Claims (10)

1. a kind of Width funtion LED lamp drive circuit of tunable optical, including for connect civil power (1) rectification module (2) and two groups LED lamp module (3), it is characterised in that this drive circuit also includes light-adjusting module (6), judges that the voltage of input exists for detecting Low voltage range is still in the detection module (4) of high voltage range and for switching two groups of LED lamp module (3) serial or parallel connections simultaneously The control module (5) for controlling two groups of LED lamp modules (3) to be worked by rated power, rectification module (2) output end connect respectively Detection module (4) and control module (5), the detection module (4) and two groups of LED lamp modules (3) difference link control modules (5) voltage setting value of two groups of LED series connection of switching, is provided with the control module (5), is had on the control module (5) Input is dimmed, the light modulation input of light-adjusting module (6) link control module (5), the light-adjusting module (6) is also connected with whole The output end of flow module (2), the light-adjusting module (6) include resistance R37 and diode D10, diode D10 negative electrode connection electricity R37 one end is hindered, resistance R37 other end ground connection, one end of the resistance R37 connections diode D10 negative electrodes, which is used to input, adjusts Photoelectric signal, light-adjusting module (6) are defeated to the light modulation of control module (5) according to the dimmer voltage signal output voltage signal of input Enter end, the operating power for two groups of LED lamp modules (3) of Signal Regulation that control module (5) inputs according to light modulation input.
2. the Width funtion LED lamp drive circuit of tunable optical according to claim 1, it is characterised in that the light-adjusting module (6) light modulator (7) for sending dimmer voltage signal is connected with, the output end of light modulator (7) connects diode D10 negative electrode respectively And resistance R37 one end.
3. the Width funtion LED lamp drive circuit of tunable optical according to claim 1 or 2, it is characterised in that light-adjusting module (6) triode Q20, partial pressure unit one, partial pressure unit two and partial pressure unit three for partial pressure are also included, partial pressure unit one is distinguished Connect the output end of rectification module (2) and triode Q20 colelctor electrode, partial pressure unit two connect rectification module (2) respectively The base stage of output end and triode Q20, partial pressure unit three distinguish light modulation input, the triode Q20 of link control module (5) Emitter stage and connection diode D10 anode, triode Q20 emitter stage is also connected with one end of resistance R37 ground connection.
4. the Width funtion LED lamp drive circuit of tunable optical according to claim 3, it is characterised in that partial pressure unit one is wrapped Resistance R32 and resistance R33 are included, partial pressure unit two includes resistance R34 and resistance R35, and partial pressure unit three includes resistance R36, resistance The output end of R38 and resistance R39, resistance R32 one end connection rectification module (2), other end connection resistance R33 one end, electricity R33 other end connecting triode Q20 colelctor electrode is hindered, the output end of one end connection rectification module (2) of resistance R34 is another End connection resistance R35 one end, resistance R35 other end difference connecting triode Q20 base stage, resistance R36 one end connection Triode Q20 emitter stage, the resistance R36 other end connect resistance R38 one end and diode D10 anode respectively, electricity The resistance R38 other end connects resistance R39 one end and the light modulation input of control module (5), the resistance R39 other end respectively Ground connection.
5. the Width funtion LED lamp drive circuit of tunable optical according to claim 3, it is characterised in that the detection module (4) triode Q1 and triode Q2 is included, control module (5) output reference voltage is whole to triode Q1 and triode Q2 Flow module (2) exports detection voltage to triode Q1 and triode Q2, and in low voltage range, triode Q1 and triode Q2 are equal Closing can make two groups of LED lamp modules (3) in parallel；In high voltage range, triode Q1 and triode Q2, which is opened, can make two groups LED lamp module (3) is connected, the detection module (4) also include for the resistance R1 of partial pressure, resistance R2, resistance R3, resistance R4, Resistance R5 and the resistance unit one at least with a resistance, the output of one end connection rectification module (2) of resistance unit one End, the colelctor electrode link control module (5) of the triode Q1 simultaneously pass through the other end of resistance R1 connections resistance unit one, three poles Pipe Q1 emitter stages link control module (5), triode Q1 base stages pass through resistance R2 link control modules (5), the triode Q2 Colelctor electrode resistance R4 link control modules are passed through by resistance R3 connecting triodes Q1 base stage, triode Q2 emitter stage (5), the other end of triode Q2 base stage connection resistance unit one, triode Q2 base stage are also connected with resistance R5 one end, electricity R5 other end ground connection is hindered, triode Q2 emitter stage is also associated with resistance R6, resistance R6 other end ground connection.
6. the Width funtion LED lamp drive circuit of tunable optical according to claim 5, it is characterised in that the detection module (4) triode Q3, resistance R9 and resistance unit two, one end of the base stage connection resistance unit two of the triode Q3 are also included And resistance R9 one end, the output end of the other end connection rectification module (2) of resistance unit two, resistance R9 another termination Ground, triode Q3 emitter stage connecting triode Q2 emitter stage, the colelctor electrode connecting triode Q2 of triode Q3 collection Electrode, the total resistance value of the resistance unit two are more than the total resistance value of resistance unit one.
7. the Width funtion LED lamp drive circuit of tunable optical according to claim 6, it is characterised in that the control module (5) metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 and resistance R13 are included, detection module (4) output is less than voltage setting value in low voltage range Voltage signal gives metal-oxide-semiconductor Q4, turns off metal-oxide-semiconductor Q4, and metal-oxide-semiconductor Q5 is opened；In high voltage range, detection module (4) output is big Metal-oxide-semiconductor Q4 is given in the voltage signal of voltage setting value, opens metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 shut-offs, the drain electrode of the metal-oxide-semiconductor Q4 connects Metal-oxide-semiconductor Q5 grid is connect, metal-oxide-semiconductor Q4 source electrode is connected with resistance R11, and the resistance R11 other end is grounded, the metal-oxide-semiconductor Q4's Grid connects resistance R1 and triode Q1 colelctor electrode respectively, and metal-oxide-semiconductor Q4 grid is also associated with resistance R12, and resistance R12's is another One end is grounded, and the output end of the drain electrode connection rectification module (2) of the metal-oxide-semiconductor Q5, metal-oxide-semiconductor Q5 source electrode is connected with diode D1, diode D1 anode connection metal-oxide-semiconductor Q5, negative electrode connects the input of the one of which of two groups of LED lamp modules (3), another The input of group LED lamp module (3) connects diode D1 by the output end and output end of resistance R13 connection rectification modules (2) Negative electrode, the grid of the metal-oxide-semiconductor Q5 is connected with resistance unit three, and resistance unit three connects the output end of rectification module (2).
8. the Width funtion LED lamp drive circuit of tunable optical according to claim 7, it is characterised in that the control module (5) include being used for the control chip (8) for adjusting LED lamp module (3) operating power, the detection input of the control chip (8) Sampling unit (9) is connected with, the control output end of the control chip (8) is connected with power adjustment unit (10), two groups of LEDs The output end of module (3) connects the input of power adjustment unit (10), the output end of the power adjustment unit (10) respectively Sampling unit (9) is connected, the power supply side of the control chip (8) is connected with resistance R17, resistance R17 connection rectification modules (2) output end, the power output end difference connecting triode Q1 of the control chip (8) emitter stage, triode Q2 hair The emitter stage of emitter-base bandgap grading and triode Q3, the voltage signal that the control chip (8) sends according to sampling unit (9) carry out judgement control The operating power of power adjustment unit (10) regulation LED lamp module (3) processed, the control chip (8) have light modulation input, electricity Hinder R38 other end connection light modulation input.
9. the Width funtion LED lamp drive circuit of tunable optical according to claim 8, it is characterised in that the sampling unit (9) resistance R18, resistance R19, resistance R20, metal-oxide-semiconductor Q6 and metal-oxide-semiconductor Q7 are included, metal-oxide-semiconductor Q6 is closed in low voltage range, MOS Pipe Q7, which is opened, makes resistance R18 and resistance R20 connect, and the detection input of control chip (8) samples voltage as on resistance R18 Voltage；In high voltage range, metal-oxide-semiconductor Q6 is opened, and metal-oxide-semiconductor Q7 is closed, and the detection input of control chip (8) samples voltage For the voltage on resistance R19, the sampling unit (9) also includes metal-oxide-semiconductor Q8, and resistance R18 one end connects control chip (8) respectively Detection input and resistance R20 one end, the other end connects resistance R19 one end and power adjustment unit (10) respectively, Resistance R19 other end ground connection, resistance R20 other end connection metal-oxide-semiconductor Q7 drain electrode, the source ground of the metal-oxide-semiconductor Q7, The power output end of metal-oxide-semiconductor Q7 grid connection control chip (8), is connected between metal-oxide-semiconductor Q7 grid and power output end Resistance R21 and resistance R22, the metal-oxide-semiconductor Q6 drain electrode pass through the power output end of resistance R22 connection control chips (8), MOS Pipe Q6 grid connection metal-oxide-semiconductor Q4 grid, metal-oxide-semiconductor Q8 grid connection metal-oxide-semiconductor Q7 grid, metal-oxide-semiconductor Q8 drain electrode connection Power adjustment unit (10), the source electrode of the metal-oxide-semiconductor Q8 and metal-oxide-semiconductor Q6 source ground.
10. the Width funtion LED lamp drive circuit of tunable optical according to claim 8, it is characterised in that the power adjusting Unit (10) includes two groups of metal-oxide-semiconductors, and every group of metal-oxide-semiconductor comprises at least a metal-oxide-semiconductor, and every group of LED lamp module (3) includes at least one LED lamp unit, a LED lamp unit at least have a LED, and the output end of two groups of LED lamp modules (3) is all connected with wherein one Group metal-oxide-semiconductor, another group of metal-oxide-semiconductor connection one of which LED lamp module (3), every group of LED lamp module (3) are respectively provided with three LED lists Member, respectively LED lamp unit one (11), LED lamp unit two (12), LED lamp unit three (13), LED lamp unit four (14), LED Lamp unit five (15) and LED lamp unit six (16), every group of three LED lamp units series connection are sequentially connected, and one group of metal-oxide-semiconductor has three Individual metal-oxide-semiconductor, respectively metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, another group of metal-oxide-semiconductor have two metal-oxide-semiconductors, respectively metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13, metal-oxide-semiconductor Q9 drain electrode connection connect the electric current of LED lamp unit one (11) and LED lamp unit four (14) respectively Output end, metal-oxide-semiconductor Q10 drain electrode connection connect the electric current output of LED lamp unit two (12) and LED lamp unit five (15) respectively End, metal-oxide-semiconductor Q11 drain electrode connect the current output terminal of LED lamp unit three (13) and LED lamp unit six (16), metal-oxide-semiconductor respectively The current output terminal of Q12 drain electrode connection LED lamp unit five (15), metal-oxide-semiconductor Q13 drain electrode connection LED lamp unit six (16) Current output terminal, metal-oxide-semiconductor Q9 grid, metal-oxide-semiconductor Q10 grid, metal-oxide-semiconductor Q11 grid, metal-oxide-semiconductor Q12 grid and metal-oxide-semiconductor Q13 grid connects the control output end of control chip (8), metal-oxide-semiconductor Q9 source electrode, metal-oxide-semiconductor Q10 source electrode, metal-oxide-semiconductor respectively The source electrode of Q11 source electrode, metal-oxide-semiconductor Q12 source electrode and metal-oxide-semiconductor Q13 connects resistance R19 respectively.
CN201720789221.0U 2017-06-30 2017-06-30 A kind of Width funtion LED lamp drive circuit of tunable optical Withdrawn - After Issue CN207070402U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720789221.0U CN207070402U (en) 2017-06-30 2017-06-30 A kind of Width funtion LED lamp drive circuit of tunable optical

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720789221.0U CN207070402U (en) 2017-06-30 2017-06-30 A kind of Width funtion LED lamp drive circuit of tunable optical

Publications (1)

Publication Number Publication Date
CN207070402U true CN207070402U (en) 2018-03-02

Family

ID=61507976

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720789221.0U Withdrawn - After Issue CN207070402U (en) 2017-06-30 2017-06-30 A kind of Width funtion LED lamp drive circuit of tunable optical

Country Status (1)

Country Link
CN (1) CN207070402U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107135579A (en) * 2017-06-30 2017-09-05 台州市椒光照明有限公司 A kind of Width funtion LED lamp drive circuit of tunable optical

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107135579A (en) * 2017-06-30 2017-09-05 台州市椒光照明有限公司 A kind of Width funtion LED lamp drive circuit of tunable optical
CN107135579B (en) * 2017-06-30 2019-02-15 台州市椒光照明有限公司 A kind of Width funtion LED lamp drive circuit of tunable optical

Similar Documents

Publication Publication Date Title
CN107094337A (en) A kind of light-operated Width funtion LED lamp drive circuit
CN110519879A (en) LED drive power based on the toning of 2.4G remote control light modulating
CN105764185B (en) Exchange driving mixing light adjusting circuit and television set
CN103702480B (en) LED drive circuit and the method in conjunction with mains switch change glow color thereof
CN208273300U (en) A kind of control circuit that colour temperature can be adjusted individually with light modulation
CN207070401U (en) A kind of induction type Width funtion LED lamp drive circuit
CN107509278A (en) A kind of LED drive power
CN208317065U (en) LED drive power based on the toning of 2.4G remote control light modulating
CN107197562A (en) A kind of radio controllable LED lamp of variable color-temperature
CN108650748A (en) A kind of constant pressure dimming power source device being compatible with a variety of dimming modes
CN105792416A (en) Control circuit of switch light-dimming type LED lamp
CN107241828B (en) A kind of phase-cut dimming LED circuit with small night lamp function
CN109168216A (en) Constant-power LED drive circuit and LED drive power
CN207070402U (en) A kind of Width funtion LED lamp drive circuit of tunable optical
CN209419952U (en) A kind of constant-current dimming driving circuit based on PWM
CN206807824U (en) A kind of middle low power intelligent lighting dims color-changed LED driving power without stroboscopic
CN107087331A (en) A kind of Width funtion LED lamp drive circuit with emergency function
CN207070400U (en) A kind of Width funtion LED lamp drive circuit with emergency function
CN206993459U (en) Switch toning control circuit, chip and switch toning LED drive system
CN207070399U (en) A kind of light-operated Width funtion LED lamp drive circuit
CN107135579A (en) A kind of Width funtion LED lamp drive circuit of tunable optical
CN209402781U (en) A kind of ultra-thin photovoltaic intelligent dimming power control circuit
CN208707991U (en) A kind of switch selection colour temperature light adjusting circuit and LED lamp
CN209638916U (en) Three primary colours multi color temperature LED artificial intelligence intelligent street lamp control system
CN107995732A (en) A kind of combinational circuit and control circuit

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20180302

Effective date of abandoning: 20190215

AV01 Patent right actively abandoned

Granted publication date: 20180302

Effective date of abandoning: 20190215