CN106604463A - LED simulating device - Google Patents
LED simulating device Download PDFInfo
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- CN106604463A CN106604463A CN201611157362.7A CN201611157362A CN106604463A CN 106604463 A CN106604463 A CN 106604463A CN 201611157362 A CN201611157362 A CN 201611157362A CN 106604463 A CN106604463 A CN 106604463A
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- audion
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an LED simulating device which comprises a positive terminal, a negative terminal, a voltage stabilizing regulator tube, a transistor, a first triode, a voltage stabilizing unit and a power consumption unit. The input end of the power consumption unit, the first end of the first resistor, the first end of the second resistor, the input end of a voltage shunting unit and the positive terminal are interconnected. The output end of the power consumption unit, the anode of the voltage stabilizing regulator tube and the input end of the transistor are interconnected. The controlled end of the power consumption unit, the second end of the first resistor and the collector electrode of a third triode are interconnected. The base electrode of the first triode, the second end of the second resistor and the input end of the voltage stabilizing unit are interconnected. The emitter electrode of the first triode is connected with the cathode of the voltage stabilizing regulator tube. The adjusting end of the voltage stabilizing regulator tube is connected with the adjusting end of the voltage shunting unit. The output end of the transistor, the output end of the voltage stabilizing unit, the output end of the voltage shunting unit and the negative terminal are interconnected. The LED simulating device provided by the invention can simulate a high-voltage lamp strip.
Description
Technical field
The present invention relates to LED analog technical fields, more particularly to a kind of LED analog.
Background technology
Existing LED analog is as shown in Figure 1.
In LED analog shown in Fig. 1, positive terminals V+ is used to simulate the positive pole of LED, and negative terminals V- is used to simulate
The negative pole of LED, voltage stabilizing adjustment pipe and the cascaded structure of diode composition be used to simulating the voltage of single LEDs with input current and
The feature of temperature change, the cascaded structure coordinates the bleeder circuit of resistance RA and resistance RB compositions to simulate the electricity of plurality of LEDs
Pressure is with input current and the feature of temperature change；Transistor is used to simulate the feature of LED power consumptions.
However, the LED analog shown in Fig. 1 is limited by the voltage that voltage stabilizing adjusts pipe, it is impossible to which simulation is more than 30V voltages
Lamp bar.And during being worked using LED analog simulation lamp bar, the lamp bar voltage ratio that generally requires simulation it is higher (
Between 150V-250V).
The content of the invention
The main object of the present invention is to provide a kind of LED analog, it is intended to which solving existing LED analog can not simulate
The problem of high pressure lamp bar.
For achieving the above object, LED analog proposed by the present invention includes positive terminals, negative terminals, voltage stabilizing adjustment
Pipe, transistor, the first audion, first resistor, second resistance, voltage regulation unit, power dissipating unit and partial pressure unit；The work(
The input of rate consumable unit, the first end of the first resistor, the first end of the second resistance, the partial pressure unit it is defeated
Enter end and the positive terminals interconnection, the outfan of the power dissipating unit, the anode of voltage stabilizing adjustment pipe and the crystalline substance
The input interconnection of body pipe, the controlled end of the power dissipating unit, the second end of the first resistor and the one or three pole
The colelctor electrode interconnection of pipe；The input of the base stage of first audion, the second end of the second resistance and the voltage regulation unit
End interconnection, the negative electrode that the emitter stage of first audion adjusts pipe with the voltage stabilizing is connected；The voltage stabilizing adjusts the adjustment of pipe
End is connected with the adjustment end of the partial pressure unit；The outfan of the transistor, the outfan of the voltage regulation unit, the partial pressure
The outfan of unit and the negative terminals interconnection.
Preferably, the transistor is the first diode, the anode of first diode, the power dissipating unit
The anode interconnection of outfan and voltage stabilizing adjustment pipe, the negative electrode of first diode, the outfan of the voltage regulation unit, institute
State the outfan of partial pressure unit and the negative terminals interconnection.
Preferably, the transistor is the second audion, the colelctor electrode of second audion, second audion
The anode interconnection of base stage, the outfan of the power dissipating unit and voltage stabilizing adjustment pipe, the transmitting of second audion
Pole, the outfan of the voltage regulation unit, the outfan of the partial pressure unit and the negative terminals interconnection.
Preferably, the LED analog also includes 3rd resistor, the first end of the 3rd resistor and the described 2nd 3
The colelctor electrode connection of pole pipe, the second end of the 3rd resistor is connected with the emitter stage of second audion.
Preferably, the partial pressure unit include potentiometer, the 4th resistance and the 5th resistance, the input of the potentiometer with
The second end connection of the 4th resistance, the first end of the 4th resistance is the input of the partial pressure unit；The current potential
The adjustment end of device is the adjustment end of the partial pressure unit, and the outfan of the potentiometer connects with the first end of the 5th resistance
Connect, the second end of the 5th resistance is the outfan of the partial pressure unit.
Preferably, the partial pressure unit also includes power supply, the first key switch and the second key switch, the current potential
Device is digital regulation resistance, and the digital regulation resistance also includes boosting controlled end, blood pressure lowering controlled end and power end；The digital current potential
The power end of device is connected with the outfan of the power supply, the boosting controlled end of the digital regulation resistance and first button
The first end connection of switch, the second end of first key switch is connected with the negative terminals；The digital regulation resistance
Blood pressure lowering controlled end is connected with the first end of second key switch, the second end of second key switch and the negative wiring
End connection.
Preferably, the power supply includes manostat, the second diode, the second Zener diode, the first electric capacity and the
Two electric capacity, the anode of second diode is connected with the positive terminals, the negative electrode of second diode, described second steady
The input interconnection of the negative electrode, the first end of first electric capacity and the manostat of pressure diode, the output of the manostat
End is connected with the first end of second electric capacity, its connecting node is the outfan of the power supply, and the manostat connects
Ground terminal, the anode of second Zener diode, the second end of first electric capacity, the second end of second electric capacity and described
Negative terminals interconnection.
Preferably, the power supply also includes light emitting diode, the 3rd audion, the 6th resistance and the 7th resistance, institute
The negative electrode for stating the first end, the colelctor electrode of the 3rd audion and second diode of the 6th resistance is interconnected, and the described 6th
The base stage interconnection at second end, the anode of the light emitting diode and the 3rd audion of resistance, the 3rd audion
Emitter stage is connected with the first end of the 7th resistance, the second end, the negative electrode of the light emitting diode, the institute of the 7th resistance
State the input interconnection of the negative electrode, the first end of first electric capacity and the manostat of the second Zener diode.
Preferably, the power dissipating unit include the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 4th
Audion, the 3rd Zener diode and metal-oxide-semiconductor, the emitter stage of the 4th audion, the first end of the 8th resistance and institute
The drain interconnection of metal-oxide-semiconductor is stated, its connecting node is the input of the power dissipating unit, the base stage of the 4th audion,
Second end of the 8th resistance and the first end interconnection of the 9th resistance, the second end of the 9th resistance is the power
The controlled end of consumable unit, the colelctor electrode of the 4th audion is connected with the first end of the tenth resistance, and the described tenth is electric
The negative electrode of the second end, the grid of the metal-oxide-semiconductor, the first end of the 11st resistance and the 3rd Zener diode that hinder is mutual
Even, the anode interconnection of the source electrode of the metal-oxide-semiconductor, the second end of the 11st resistance and the 3rd Zener diode, its company
Connect the outfan that node is the power dissipating unit.
Preferably, the power dissipating unit also include the 12nd resistance, the first end of the 12nd resistance with it is described
The source electrode connection of metal-oxide-semiconductor, the second end of the 12nd resistance, the second end of the 11st resistance and the 3rd voltage stabilizing two
The anode interconnection of pole pipe, its connecting node is the outfan of the power dissipating unit.
Preferably, the LED analog also includes the 3rd electric capacity, and the first end of the 3rd electric capacity disappears with the power
The outfan connection of consumption unit, the second end of the 3rd electric capacity and the outfan of the voltage regulation unit, the partial pressure unit
Outfan and the negative terminals interconnection.
Technical solution of the present invention in LED analog by arranging voltage regulation unit, it is ensured that falls to being adjusted in voltage stabilizing the moon of pipe
Voltage between pole and anode be less than 30V so that LED analog can simulated high-pressure lamp bar, widened LED analog
Range of application.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the electrical block diagram of LED analog in prior art；
Fig. 2 is the electrical block diagram of the embodiment of LED analog one of the present invention；
Fig. 3 is the electrical block diagram of another embodiment of LED analog of the present invention；
Fig. 4 is the electrical block diagram of the another embodiment of LED analog of the present invention.
Drawing reference numeral explanation：
| Label | Title | Label | Title | Label | Title |
| 10 | Voltage regulation unit | C1 | First electric capacity | R1 | First resistor |
| 20 | Partial pressure unit | C2 | Second electric capacity | R2 | Second resistance |
| 30 | Power dissipating unit | C3 | 3rd electric capacity | R3 | 3rd resistor |
| V+ | Positive terminals | Q1 | First audion | R4 | 4th resistance |
| V- | Negative terminals | Q2 | Second audion | R5 | 5th resistance |
| U1 | Voltage stabilizing adjustment pipe | Q3 | 3rd audion | R6 | 6th resistance |
| DZ1 | First Zener diode | Q4 | 4th audion | R7 | 7th resistance |
| DZ2 | Second Zener diode | Qn | Metal-oxide-semiconductor | R8 | 8th resistance |
| DZ3 | 3rd Zener diode | U3 | Manostat | R9 | 9th resistance |
| DL | Light emitting diode | U2 | Digital regulation resistance | R10 | Tenth resistance |
| D1 | First diode | K1 | First key switch | R11 | 11st resistance |
| D2 | Second diode | K2 | Second key switch | R12 | 12nd resistance |
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the embodiment of the present invention,
It is only used for explaining in relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc., such as
When really the particular pose changes, then directionality indicates also correspondingly to change therewith.
In addition, the description for being related to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", "
Two " at least one this feature can be expressed or be implicitly included to feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or when cannot realize it will be understood that the combination of this technical scheme is not present, also not in the protection model of application claims
Within enclosing.
The present invention proposes a kind of LED analog.
Fig. 2 is referred to, in one embodiment, LED analog includes positive terminals V+, negative terminals V-, voltage stabilizing adjustment
Pipe U1, transistor (the first diode D1 as shown in Figure 2), the first audion Q1, first resistor R1, second resistance R2, voltage stabilizing
Unit 10, power dissipating unit 30 and partial pressure unit 20；The input of power dissipating unit 30, the first end of first resistor R1,
The first end of second resistance R2, the input of partial pressure unit 20 and positive terminals V+ interconnection, the outfan of power dissipating unit 30,
The anode of voltage stabilizing adjustment pipe U1 and the input interconnection of transistor, the controlled end of power dissipating unit 30, the of first resistor R1
The colelctor electrode interconnection of two ends and the first audion Q1；The base stage of the first audion Q1, the second end of second resistance R2 and voltage stabilizing list
The input interconnection of unit 10, the negative electrode that the emitter stage of the first audion Q1 adjusts pipe U1 with voltage stabilizing is connected；Voltage stabilizing adjustment pipe U1's
Adjustment end is connected with the adjustment end of partial pressure unit 20；The outfan of transistor, the outfan of voltage regulation unit 10, partial pressure unit 20
Outfan and negative terminals V- are interconnected.
It should be noted that in the present embodiment, the voltage between the adjustment end and anode of voltage stabilizing adjustment pipe U1 is 2.5V, surely
The voltage stabilizing value of pressure unit 10 can be arranged between 3.3V to 30V.Here, entering so that the voltage stabilizing value of voltage regulation unit 10 is as 27V as an example
Row explanation.Voltage between the input and outfan of transistor is 0.7V, here, so that transistor is the first diode D1 as an example
Illustrate.
The positive terminals V+ of LED analog is connected with the positive drive end of LED drive device (not shown), by LED
The negative terminals V- of analog is connected with the negative drive end of LED drive device, makes LED drive device output driving power supply, LED
Analog can just simulate lamp bar work.
Specifically, in the LED analog courses of work：On the one hand, power dissipating unit 30 can simulate LED and consume work(
The feature of rate.On the other hand, voltage stabilizing adjustment pipe U1 adjustment end and anode between voltage be 2.5V, the sun of the first diode D1
Voltage between pole and negative electrode is 0.7V, and the anode for making voltage stabilizing adjustment pipe U1 is connected with the anode of the first diode D1, it is possible to
The voltage between voltage stabilizing adjustment pipe U1 adjustment ends and the first diode D1 negative electrodes is set to be 3.2V.So, voltage stabilizing adjustment pipe U1 and the
The cascaded structure of one diode D1 can just simulate single LEDs voltage with input current and the feature of temperature change.
Further, since the voltage between the adjustment end of partial pressure unit 20 and outfan is approximate with the pressure drop at single LEDs two ends,
Therefore, the parameter of the unit of partial pressure 20 is changed, it is possible to change the voltage between the input of partial pressure unit 20 and outfan, Ye Jigai
Become the voltage between the positive terminals V+ and negative terminals V- of LED analog.So, LED analog just can simulate
Plurality of LEDs voltage is with input current and the feature of temperature change.
It is understood that after the completion of the parameter setting of partial pressure unit 20, the LED number that LED analog is simulated
It is fixed.When the LED that LED analog is simulated is more than 8, voltage regulation unit 10 stablizes the base voltage of the first audion Q1
In 27V, because the voltage between the base stage and emitter stage of the first audion Q1 is in 0.7V or so, therefore, voltage stabilizing adjustment pipe U1's
Voltage between negative electrode and anode is not over its pressure voltage.So, even if the LED that LED analog is simulated reaches 50,
Voltage between the input and outfan of partial pressure unit 20 (namely the positive terminals V+ and negative terminals V- of LED analog
Between voltage) reach 150V, LED analog can also simulate LED normal works.That is, LED analog can be simulated
High pressure lamp bar.
To sum up, LED analog proposed by the present invention, can not only simulate single LEDs, plurality of LEDs, moreover it is possible to simulated high-pressure lamp
Bar.Therefore, technical solution of the present invention can solve the problem that existing LED analog is unable to the problem of simulated high-pressure lamp bar, widen LED
The range of application of analog.
Based on an above-mentioned embodiment, Fig. 3 is referred to, in another embodiment：
First diode D1 is replaced by the second audion Q2, specifically, the colelctor electrode of the second audion Q2, the second audion
The anode interconnection of the base stage, the outfan of power dissipating unit 30 and voltage stabilizing adjustment pipe U1 of Q2, the emitter stage of the second audion Q2,
The outfan of voltage regulation unit 10, the outfan of partial pressure unit 20 and negative terminals V- interconnection.
It should be noted that audion has conductivity modulation effect.So-called conductance modulation, is exactly to flow on audion PN junction
When the forward current crossed is larger, the phenomenon of the corresponding increase of its electrical conductivity.It is special with reference to the C-V characteristic of LED and the volt-ampere of diode
Property understand, compared to diode, audion PN junction can simulate the feature that LED voltage changes with input current closer to as.This
Outward, audion PN junction and LED are respectively provided with negative temperature coefficient feature, and metal-oxide-semiconductor has ptc characteristics, therefore, compared to
Metal-oxide-semiconductor, audion PN junction can simulate the feature that LED voltage is varied with temperature closer to as.
For the degree of approximation for further improving LED analog and LED, in the present embodiment, 3rd resistor R3 is also additionally arranged.Tool
Body ground, the first end of 3rd resistor R3 is connected with the colelctor electrode of the second audion Q2, second end and the two or three of 3rd resistor R3
The emitter stage connection of pole pipe Q2.
It is understood that due to constitute LED it is different from the material of audion, therefore, input current than it is larger when, three
The increase speed of pole pipe PN junction electrical conductivity and LED electrical conductivity is not quite similar.And 3rd resistor R3, compensation audion PN can be played
The effect of the increase speed of junction conduction rate so that the increase speed of audion PN junction electrical conductivity and the increase speed of LED electrical conductivity
Approximately.
Additionally, it is noted that above-mentioned voltage regulation unit 10 includes the first Zener diode DZ1.Specifically, first is steady
The anode of pressure diode DZ1 is the input of voltage regulation unit 10, and the negative electrode of the first Zener diode DZ1 is the defeated of voltage regulation unit 10
Go out end.It is appreciated that voltage regulation unit 10 can also be realized using other circuit structures, such as, voltage regulation unit 10 includes multiple strings
The Zener diode of connection connection.
Based on above-mentioned an embodiment or another embodiment, in another embodiment：
Partial pressure unit 20 includes potentiometer (potentiometer as shown in Figure 4), the 4th resistance R4 and the 5th resistance R5, potentiometer
Input be connected with second end of the 4th resistance R4, the first end of the 4th resistance R4 for partial pressure unit 20 input；Current potential
The adjustment end of device is the adjustment end of partial pressure unit 20, and the outfan of potentiometer is connected with the first end of the 5th resistance R5, and the 5th is electric
Second end of resistance R5 is the outfan of partial pressure unit 20.
In the present embodiment, it is assumed that the resistance of potentiometer is RX, the resistance of the 4th resistance R4 is R4, the resistance of the 5th resistance R5
For R5.
If the adjustment end of potentiometer is moved to into input, then the electricity between the input and outfan of partial pressure unit 20
Pressure (voltage i.e. between the positive terminals V+ and negative terminals V- of LED analog) is 3.2 (RX+R4+R5)/(RX+R5), right
Answer, LED number of LED analog simulation is (RX+R4+R5)/(RX+R5)；
If the adjustment end of potentiometer is moved to into outfan, then the electricity between the input and outfan of partial pressure unit 20
Pressure (voltage i.e. between the positive terminals V+ and negative terminals V- of LED analog) is 3.2 (RX+R4+R5)/R5, corresponding,
LED number of LED analog simulation is (RX+R4+R5)/R5.
It is appreciated that changing the position of potentiometer adjustment end, it is possible to change the input and outfan of partial pressure unit 20
Between voltage, and then change LED number of LED analog simulation, and LED number of LED analog simulation is in (RX+
R4+R5)/(RX+R5) is between (RX+R4+R5)/R5.
It is preferred that above-mentioned potentiometer is digital regulation resistance U2, digital regulation resistance U2 also includes that boosting controlled end is (not shown
Go out), blood pressure lowering controlled end (not shown) and power end (not shown), partial pressure unit 20 also includes that power supply 21, first are pressed
Key switch K1 and the second key switch K2；The power end of digital regulation resistance U2 is connected with the outfan of power supply 21, numeral electricity
The boosting controlled end of position device U2 is connected with the first end of the first key switch K1, the second end and the negative wiring of the first key switch K1
End V- connections；The blood pressure lowering controlled end of digital regulation resistance U2 is connected with the first end of the second key switch K2, the second key switch K2
The second end be connected with negative terminals V-.
Here, the power end for making digital regulation resistance U2 is connected with the outfan of power supply 21, digital regulation resistance U2 can
To work.Hereafter, by the first key switch K1, so that it may so that the adjustment end of digital regulation resistance U2 exports extreme direction movement to it,
And then LED number of increase LED analog simulations；By the second key switch K2, so that it may so that the adjustment of digital regulation resistance U2
Hold to it and be input into extreme direction movement, and then reduce the LED number that LED analog is simulated, it is very easy.It should be noted that
General, the adjustment end of digital regulation resistance U2 is to its outfan by the first key switch K1 and/or the second key switch K2 once
And/or input Moving Unit amplitude；It is long to press the first key switch K1 and/or the second key switch K2, digital regulation resistance U2's
Adjustment end continues to be moved to its outfan and/or input.And during digital regulation resistance U2 power-off, the tune of digital regulation resistance U2
Whole end is not moved.Additionally, for compared to simulation potentiometer, digital regulation resistance U2 also has not easy to wear, safe
The characteristics of.
It is noted that digital regulation resistance U2 also includes the bus terminals end (not shown) for being connected with computer
And interface terminals (not shown).So, when needing to adjust digital regulation resistance U2 parameters, by computer to digital current potential
Device U2 burning programs are capable of achieving, simple and efficient.
It is preferred that above-mentioned power supply 21 include manostat U3, the second diode D2, the second Zener diode DZ2, first
Electric capacity C1 and the second electric capacity C2, the anode of the second diode D2 is connected with positive terminals V+, the negative electrode of the second diode D2, second
(not shown) interconnection of input of the negative electrode of Zener diode DZ2, the first end of the first electric capacity C1 and manostat U3, manostat
The outfan (not shown) of U3 is connected with the first end of the second electric capacity C2, and its connecting node is the outfan of power supply 21,
It is the earth terminal (not shown) of manostat U3, the anode of the second Zener diode DZ2, second end of the first electric capacity C1, second electric
Hold the second end and the negative terminals V- interconnection of C2.
During LED analog simulation LED operation：If the digital dimming signal of input is high level, LED drives dress
Output driving power supply is put, then manostat U3 obtains input power by the second diode D2, and in its outfan output.It is same with this
When, the first electric capacity C1 charges.If the digital dimming signal of input is low level, LED drive device not output driving power supply, then surely
Depressor U3 obtains input power by the first electric capacity C1, and in its outfan output.In the circuit structure, the second Zener diode
DZ2 is used for overtension of the anti-falling stop in the first electric capacity C1 first ends, and to improve the safety of circuit, it is right that the second electric capacity C2 is used for
The power supply of manostat U3 outputs is filtered process.
In order to prevent affecting the work of power supply 21 because the driving power supply voltage of LED drive device output is widely varied
Make, light emitting diode DL, the 3rd audion Q3, the 6th resistance R6 and the 7th resistance R7 are also provided with power supply 21.Tool
Body ground, the negative electrode interconnection of the first end, the colelctor electrode of the 3rd audion Q3 and the second diode D2 of the 6th resistance R6, the 6th resistance
Second end, the anode of light emitting diode DL and the 3rd audion Q3 of R6 base stage interconnection, the emitter stage of the 3rd audion Q3 with
The first end connection of the 7th resistance R7, second end of the 7th resistance R7, the negative electrode of light emitting diode DL, the second Zener diode
The input interconnection of the negative electrode of DZ2, the first end of the first electric capacity C1 and manostat U3.
It is appreciated that in the course of work of power supply 21, being added in the voltage at the 7th resistance R7 two ends because of light emitting diode
The fixation of voltage between DL both end voltages and the base stage and emitter stage of the 3rd audion Q3 and fix.That is, in power supply electricity
In the course of work of source 21, the electric current for flowing through the 7th resistance R7 is fixed, when LED drive device output driving power supply voltage significantly
During change, the output of power supply 21 is unaffected.Additionally, light emitting diode DL can simulate the indicative character of LED, refer to
Show the state of LED analog energization work.
It should be noted that in above-mentioned any one embodiment, power dissipating unit 30 can include the 8th resistance R8, the 9th
Resistance R9, the tenth resistance R10, the 11st resistance R11, the 4th audion Q4, the 3rd Zener diode DZ3 and metal-oxide-semiconductor Qn, the 4th
The drain interconnection of the emitter stage of audion Q4, the first end of the 8th resistance R8 and metal-oxide-semiconductor Qn, its connecting node is power consumption list
The input of unit 30, the first end interconnection of the base stage, second end of the 8th resistance R8 and the 9th resistance R9 of the 4th audion Q4, the
Second end of nine resistance R9 for power dissipating unit 30 controlled end, the colelctor electrode of the 4th audion Q4 and the tenth resistance R10's
First end connects, second end of the tenth resistance R10, the grid of metal-oxide-semiconductor Qn, the first end of the 11st resistance R11 and the 3rd voltage stabilizing
The negative electrode interconnection of diode DZ3, the source electrode of metal-oxide-semiconductor Qn, second end of the 11st resistance R11 and the 3rd Zener diode DZ3's
Anode is interconnected, and its connecting node is the outfan of power dissipating unit 30.
Here, when the 3rd audion Q3 is turned on, metal-oxide-semiconductor Qn conductings, the power consumption of power dissipating unit 30.It is worth mentioning
, to avoid the drain current for flowing through metal-oxide-semiconductor Qn excessive, also it is additionally arranged the 12nd resistance R12.Specifically, the 12nd resistance
The first end of R12 is connected with the source electrode of metal-oxide-semiconductor Qn, second end of the 12nd resistance R12, second end of the 11st resistance R11 and
The anode interconnection of the 3rd Zener diode DZ3, its connecting node is the outfan of power dissipating unit 30.
In the LED analog courses of work, when increasing in the voltage of metal-oxide-semiconductor Qn grids when falling, the leakage of metal-oxide-semiconductor Qn is flowed through
Electrode current increases, and the voltage increase at the 12nd resistance R12 two ends, the voltage between the grid and source electrode of metal-oxide-semiconductor Qn reduces, flows through
The drain current of metal-oxide-semiconductor Qn reduces.So, the 12nd resistance R12 just serves degenerative effect.
Additionally, the exchange positive feedback to eliminate LED analog, improves the stability of circuit, also in LED analog
The 3rd electric capacity C3 is additionally arranged, specifically, the first end of the 3rd electric capacity C3 is connected with the outfan of power dissipating unit 30, and the 3rd is electric
Hold second end of C3 and the outfan of voltage regulation unit 10, the outfan of partial pressure unit 20 and negative terminals V- interconnection.
In the LED analog courses of work, when the electric current for flowing through second resistance R2 increases, first resistor R1 is flowed through
Electric current increases, and flows through the electric current increase of the 8th resistance R8 and the 9th resistance R9, flows through the electric current increase of the 4th audion Q4, falls
The voltage increase at the 11st resistance R11 two ends, flows through the electric current increase of metal-oxide-semiconductor Qn, flows through the electric current increase of the second audion Q2,
The electric current for flowing through the first audion Q1 further increases, thus, being formed regenerative feedback loop.Here, the 3rd electric capacity C3 can be with
Bypass effect is played, the positive feedback can be eliminated.Additionally, the 3rd electric capacity C3 can also make the second audion Q2 colelctor electrodes with transmitting
Voltage between pole slowly increases, and plays a part of soft start.
Hereinafter, with reference to Fig. 2 to Fig. 4, the operation principle of LED analog of the present invention is illustrated：
The positive terminals V+ of LED analog is connected with the positive drive end of LED drive device, by LED analog
Negative terminals V- is connected with the negative drive end of LED drive device, makes LED drive device output driving power supply.
Manostat U3 is electric by the second diode D2, light emitting diode DL, the 3rd audion Q3, the 6th resistance R6 and the 7th
Resistance R7 obtains input power, and exports the working power of digital regulation resistance U2 in its outfan, and digital regulation resistance U2 obtains electric work.
At the same time, on the one hand, the driving power supply of LED analog output turns on the first audion Q1, the 4th audion Q4 is turned on,
Metal-oxide-semiconductor Qn is turned on, and power dissipating unit 30 simulates the feature of LED power consumptions.On the other hand, voltage stabilizing adjustment pipe U1, the two or three
Pole pipe Q2 and the single LEDs voltage of 3rd resistor R3 simulation are with input current and the feature of temperature change so that fall in digital current potential
The adjustment terminal voltage of device U2 is approximate with single LEDs voltage.
Hereafter, if desired change LED number of LED analog simulation, then can be by adjusting the first key switch K1
And second key switch K2 realize.Or, by realizing to digital regulation resistance U2 burnings degree.
In whole process, because of the pressure stabilization function of the first Zener diode DZ1, even if need simulation LED number 50 to
Between 100, need the lamp bar voltage of simulation between 150V to 300V, LED analog is also unaffected.
So, LED analog is achieved that the function of simulated high-pressure lamp bar, and a number of LED can be with root in lamp bar
It is adjusted according to actual demand.
Technical solution of the present invention has the advantages that：
(1) voltage regulation unit 10 is set, it is ensured that the voltage fallen between the negative electrode and anode that voltage stabilizing adjusts pipe U1 is less than
30V so that LED analog can simulated high-pressure lamp bar, widened the range of application of LED analog.
(2) replace the first diode D1 with C-V characteristic and the closer second audion Q2 of LED, enhance LED simulations
The degree of approximation of device and LED.
(3) the electrical conductivity increase speed that 3rd resistor R3 compensates the second audion Q2 is set so that the second audion Q2's
The C-V characteristic of PN junction C-V characteristic and LED is further to further enhancing the degree of approximation of LED analog and LED.
(4) using potentiometer, the 4th resistance R4 and the 5th resistance R5 as partial pressure unit 20 so that LED analog moulds
LED number of plan is adjustable, has further widened the range of application of LED analog.
(5) from digital regulation resistance U1, and the first key switch K1 and the second key switch K2 is correspondingly arranged, facilitates tune
Section LED analog simulates a number of LED, it is to avoid the performance of LED analog is affected because of potentiometer abrasion.
(6) from the digital regulation resistance U2 with bus terminals end and interface terminals, software adjustment numeral current potential is realized
Device U2 parameters, change LED number of LED analog simulation, further facilitated adjust LED analog simulation LED
Number.
(7) arrange between manostat U3 and the second diode D2 by light emitting diode DL, the 3rd audion Q3, the 6th electric
The constant-current circuit of resistance R6 and the 7th resistance R7 compositions, can prevent the driving power supply voltage that LED drive device is exported significantly
Change the output to manostat U3 and produce interference.
(8) the first electric capacity C1 is set between the input and earth terminal of manostat U3, can is in digital dimming signal
Low level, when LED drive device does not have driving power supply to export, it is to avoid manostat U3 occur and stop because input power cannot be obtained
The situation of the working power of output digital regulation resistance U2.
(9) the 3rd electric capacity C3 is set up, the exchange positive feedback in LED analog can be eliminated, optimize LED analog
Performance.
The preferred embodiments of the present invention are these are only, the scope of the claims of the present invention is not thereby limited, it is every in the present invention
Inventive concept under, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/be used in it indirectly
The technical field of his correlation is included in the scope of patent protection of the present invention.
Claims (11)
1. a kind of LED analog, it is characterised in that including positive terminals, negative terminals, voltage stabilizing adjustment pipe, transistor, first
Audion, first resistor, second resistance, voltage regulation unit, power dissipating unit and partial pressure unit；
The input of the power dissipating unit, the first end of the first resistor, the first end of the second resistance, described point
The input of pressure unit and the positive terminals interconnection, the outfan of the power dissipating unit, the voltage stabilizing adjust the sun of pipe
The input interconnection of pole and the transistor, the controlled end of the power dissipating unit, the second end of the first resistor and institute
State the colelctor electrode interconnection of the first audion；
The input interconnection of the base stage of first audion, the second end of the second resistance and the voltage regulation unit, it is described
The negative electrode that the emitter stage of the first audion adjusts pipe with the voltage stabilizing is connected；
The adjustment end of the voltage stabilizing adjustment pipe is connected with the adjustment end of the partial pressure unit；It is the outfan of the transistor, described
The outfan of voltage regulation unit, the outfan of the partial pressure unit and the negative terminals interconnection.
2. LED analog as claimed in claim 1, it is characterised in that the transistor is the first diode, described first
The anode interconnection of the anode of diode, the outfan of the power dissipating unit and voltage stabilizing adjustment pipe, the one or two pole
The negative electrode of pipe, the outfan of the voltage regulation unit, the outfan of the partial pressure unit and the negative terminals interconnection.
3. LED analog as claimed in claim 1, it is characterised in that the transistor is the second audion, described second
The colelctor electrode of audion, the base stage of second audion, the outfan of the power dissipating unit and voltage stabilizing adjustment pipe
Anode interconnection, the emitter stage of second audion, the outfan of the voltage regulation unit, the outfan of the partial pressure unit and
The negative terminals interconnection.
4. LED analog as claimed in claim 3, it is characterised in that the LED analog also includes 3rd resistor,
The first end of the 3rd resistor is connected with the colelctor electrode of second audion, the second end of the 3rd resistor and described
The emitter stage connection of two audions.
5. the LED analog as described in claim 1-4 any one, it is characterised in that the partial pressure unit includes current potential
Device, the 4th resistance and the 5th resistance, the input of the potentiometer is connected with the second end of the 4th resistance, and the described 4th is electric
The first end of resistance is the input of the partial pressure unit；The adjustment end of the potentiometer is the adjustment end of the partial pressure unit, institute
The outfan for stating potentiometer is connected with the first end of the 5th resistance, and the second end of the 5th resistance is the partial pressure unit
Outfan.
6. LED analog as claimed in claim 5, it is characterised in that the partial pressure unit also include power supply, first
Key switch and the second key switch, the potentiometer be digital regulation resistance, the digital regulation resistance also include boosting controlled end,
Blood pressure lowering controlled end and power end；
The power end of the digital regulation resistance is connected with the outfan of the power supply, and the boosting of the digital regulation resistance is controlled
End is connected with the first end of first key switch, and the second end of first key switch is connected with the negative terminals；
The blood pressure lowering controlled end of the digital regulation resistance is connected with the first end of second key switch, and the of second key switch
Two ends are connected with the negative terminals.
7. LED analog as claimed in claim 6, it is characterised in that the power supply includes manostat, the two or two pole
Pipe, the second Zener diode, the first electric capacity and the second electric capacity, the anode of second diode is connected with the positive terminals,
The negative electrode of second diode, the negative electrode of second Zener diode, the first end of first electric capacity and the voltage stabilizing
The input interconnection of device, the outfan of the manostat is connected with the first end of second electric capacity, and its connecting node is described
The outfan of power supply, the earth terminal of the manostat, the anode of second Zener diode, the of first electric capacity
Two ends, the second end of second electric capacity and the negative terminals interconnection.
8. LED analog as claimed in claim 7, it is characterised in that the power supply also include light emitting diode, the
Three audions, the 6th resistance and the 7th resistance, the first end of the 6th resistance, the colelctor electrode of the 3rd audion and described
The negative electrode interconnection of the second diode, the second end of the 6th resistance, the anode of the light emitting diode and the three or three pole
The base stage interconnection of pipe, the emitter stage of the 3rd audion is connected with the first end of the 7th resistance, the 7th resistance
Second end, the negative electrode of the light emitting diode, the negative electrode of second Zener diode, the first end of first electric capacity and institute
State the input interconnection of manostat.
9. the LED analog as described in claim 1-4 any one, it is characterised in that the power dissipating unit includes
8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 4th audion, the 3rd Zener diode and metal-oxide-semiconductor, described
The drain interconnection of the emitter stage of four audions, the first end of the 8th resistance and the metal-oxide-semiconductor, its connecting node is the work(
The input of rate consumable unit, the base stage of the 4th audion, the second end of the 8th resistance and the 9th resistance
First end is interconnected, and the second end of the 9th resistance is the controlled end of the power dissipating unit, the collection of the 4th audion
Electrode is connected with the first end of the tenth resistance, the second end of the tenth resistance, the grid of the metal-oxide-semiconductor, the described tenth
The negative electrode interconnection of the first end of one resistance and the 3rd Zener diode, the source electrode of the metal-oxide-semiconductor, the 11st resistance
The anode interconnection of the second end and the 3rd Zener diode, its connecting node is the outfan of the power dissipating unit.
10. LED analog as claimed in claim 9, it is characterised in that the power dissipating unit also includes that the 12nd is electric
Resistance, the first end of the 12nd resistance is connected with the source electrode of the metal-oxide-semiconductor, the second end of the 12nd resistance, described the
The anode interconnection of the second end of 11 resistance and the 3rd Zener diode, its connecting node is the power dissipating unit
Outfan.
11. LED analog as claimed in claim 10, it is characterised in that the LED analog also includes that the 3rd is electric
Hold, the first end of the 3rd electric capacity be connected with the outfan of the power dissipating unit, the second end of the 3rd electric capacity and
The outfan of the voltage regulation unit, the outfan of the partial pressure unit and the negative terminals interconnection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611157362.7A CN106604463B (en) | 2016-12-14 | 2016-12-14 | LED simulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611157362.7A CN106604463B (en) | 2016-12-14 | 2016-12-14 | LED simulator |
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| CN106604463B CN106604463B (en) | 2019-05-31 |
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Cited By (1)
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| CN107733219A (en) * | 2017-11-01 | 2018-02-23 | 广州金升阳科技有限公司 | A kind of Switching Power Supply output soft start circuit |
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|---|---|
| CN106604463B (en) | 2019-05-31 |
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