CN205546032U - LED drive circuit compatible with silicon controlled rectifier ware - Google Patents
LED drive circuit compatible with silicon controlled rectifier ware Download PDFInfo
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- CN205546032U CN205546032U CN201620043200.XU CN201620043200U CN205546032U CN 205546032 U CN205546032 U CN 205546032U CN 201620043200 U CN201620043200 U CN 201620043200U CN 205546032 U CN205546032 U CN 205546032U
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- controllable silicon
- resistance
- silicon dimmer
- pwm
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Abstract
The embodiment of the utility model discloses LED drive circuit compatible with silicon controlled rectifier ware, further including being used for the measuring and saving the silicon controlled rectifier ware and adjust to the first state of the copped wave state of the required luminance of LED lamps and lanterns, it adjusts to the copped wave detection module of fully conducting state's second state to detect and save the silicon controlled rectifier ware simultaneously, carry out PWM dimming control module that the PWM output waveform adjusted and according to the LED constant current drive module of receiving PWM output waveform output constant current drive LED lamps and lanterns according to first state, copped wave detection module's input and silicon controlled rectifier ware output are connected, copped wave detection module's output is connected to PWM dimming control module's input, LED constant current driver module's input is connected to PWM dimming control module's output.
Description
Technical field
This utility model belongs to power technique fields, and a kind of LED compatible with controllable silicon dimmer drives
Circuit.
Background technology
Using controllable silicon technology that illuminator is controlled have voltage-regulation speed fast, precision is high, can be real at times
Time adjust, have pressure stabilization function, volume is little, lightweight, the advantage of low cost.Therefore American-European family and most hotel guest
Shop is fitted with the controllable silicon dimmer for electric filament lamp, but controllable silicon light modulation mode also exists the defect that it is intrinsic, owing to adjusting
Light and the copped wave taked, make the electric energy that electrical network conveying comes cannot be by complete wave period output energy, simultaneously as quickly
Switch, easily cause waveform distortion of the power supply network, form the electric network pollutions such as harmonic wave, very harmful.It is simultaneous for LED illumination, easily occurs
Low-angle dodges frequency, it is impossible to well mate existing LED illumination driver.Developed country abroad, has expressly provided electricity
The restriction of gas equipment harmonic content, at home, the big city such as Beijing, Shanghai, Guangzhou, the equipment exceeded standard harmonic content limits
Be connected to the grid use.Use controllable silicon technology time illuminator is carried out brightness adjustment control, generally require and additionally install filtering additional and set
Standby, harmonic pollution could be reduced.
Along with gradually promoting the use of of LED light source, its light modulation demand is the most extensive.But existing controllable silicon dimmer
Can not be mutually compatible with LED light source, and big to harmonic pollution in electric power net.
Utility model content
For solving the problems referred to above, the purpose of this utility model is to provide a kind of LED compatible with controllable silicon dimmer to drive
Galvanic electricity road, for being attached and then dimming LED lamp with existing controllable silicon dimmer.
For achieving the above object, the technical solution of the utility model is:
A kind of LED drive circuit compatible with controllable silicon dimmer, for the LED lamp of controllable silicon light modulation, wraps further
Include for controllable silicon dimmer regulation being detected and stored to the first state of the copped wave state of brightness needed for LED lamp, examine simultaneously
Survey and store controllable silicon dimmer to regulate the copped wave detection module of the second state to fully conducting state, carry out according to the first state
PWM output waveform regulation PWM dimming controlling module and according to receive PWM output waveform output constant current drive LED lamp
LED constant current drive module, the input of described copped wave detection module is connected with controllable silicon dimmer outfan, described PWM tune
The input of photocontrol module connects the outfan of copped wave detection module, and the outfan of described PWM dimming controlling module connects LED
The input of constant-current driven module.
Preferably, described copped wave detection module farther includes rectification unit, flow-restriction, amplifying unit, described rectification
Unit connects zero line and the live wire end of controllable silicon dimmer respectively, is used for avoiding circuit reverse-conducting, and its outfan connects current limliting
The input of unit；The outfan of flow-restriction connects the input of amplifying unit；Amplifying unit converts the current to amplification
The input to PWM light-adjusting module is inputted after voltage.
Preferably, described rectification unit is and the first diode of connecing and the second diode, and the positive pole of the first diode is even
Connecing the live wire end of controllable silicon dimmer, the positive pole of the second diode connects the zero line side of controllable silicon dimmer, the first diode and
The negative pole of the second diode connects the input of flow-restriction.
Preferably, described flow-restriction includes the first resistance and second resistance of series connection, and one end of the first resistance connects whole
The outfan of stream unit, described first resistance and the second resistance are for carrying out dividing potential drop current limliting to the voltage of rectification unit output.
Preferably, described amplifying unit includes the 3rd resistance, the 4th resistance, the first audion and the first electric capacity, described
One end of three resistance and the base stage of the first audion connect the outfan of flow-restriction, and the colelctor electrode of the first audion connects the 4th
One end of resistance, the emitter stage of the first audion connects one end of the first electric capacity, and the other end of the 4th resistance and the first electric capacity is made
Outfan for copped wave detection module inputs to PWM dimming controlling module.
Preferably, the master chip of described PWM dimming controlling module is to have PWM to produce the microcontroller of function.
Compared with prior art, the beneficial effects of the utility model are as follows:
(1) do not change existing controllable silicon dimmer and carry out the PWM stepless dimming of LED；
(2) comparing existing thyristor regulating optical circuit, PWM light adjusting circuit is good, the most very to the compatibility of dimmer
Many thyristor regulatings optical circuit can not compatible multiple dimmer；
(3) comparing thyristor regulating optical circuit, the efficiency of PWM light adjusting circuit is high；
(4) comparing existing thyristor regulating optical circuit, the power factor of PWM light adjusting circuit is high；
(5) comparing thyristor regulating optical circuit, the electromagnetic compatibility of PWM light adjusting circuit is good；
(6) comparing thyristor regulating optical circuit, the noise of PWM light adjusting circuit is little.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the LED drive circuit compatible with controllable silicon dimmer of this utility model embodiment；
Fig. 2 is the AC input waveform figure under this utility model embodiment one state；
Fig. 3 is the LED luminance schematic diagram under the AC input waveform of Fig. 2 state；
Fig. 4 is the AC input waveform figure under this utility model embodiment all light state；
Fig. 5 is the LED luminance schematic diagram under the AC input waveform of Fig. 4 state；
Fig. 6 be this utility model embodiment the LED drive circuit compatible with controllable silicon dimmer in copped wave detection module
Circuit theory diagrams.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain
This utility model, is not used to limit this utility model.
On the contrary, this utility model contain any be defined by the claims do in spirit and scope of the present utility model
Replacement, amendment, equivalent method and scheme.Further, in order to make the public that this utility model to be had a better understanding, the most right
During details of the present utility model describes, detailed describe some specific detail sections.Do not have for a person skilled in the art
The description of these detail sections can also understand this utility model completely.
See Fig. 1, the LED drive circuit 10 compatible with controllable silicon dimmer showing this utility model embodiment former
Reason block diagram, for driving the LED lamp being provided with controllable silicon dimmer, for the LED lamp of controllable silicon light modulation, farther includes
For controllable silicon dimmer regulation being detected and stored to the first state of the copped wave state of brightness needed for LED lamp, detect simultaneously
And store controllable silicon dimmer regulation to fully conducting state the second state copped wave detection module 101, enter according to the first state
Row PWM output waveform regulation PWM dimming controlling module 102 and according to receive PWM output waveform output constant current drive LED
The LED constant current of light fixture drives module 103, and the input of copped wave detection module 101 is connected with controllable silicon dimmer outfan, PWM
The input of dimming controlling module 102 connects the outfan of copped wave detection module 101, the outfan of PWM dimming controlling module 102
Connect LED constant current and drive the input of module 103.By the LED drive circuit compatible with controllable silicon dimmer of arrangement above,
Such as copped wave 30% is set when controllable silicon dimmer, AC input waveform as in figure 2 it is shown, now PWM dim signal be full dutycycle
(dutycycle is 1), as it is shown on figure 3, LED illumination realizes copped wave brightness needed for 30%.When, in certain time, specifically applying reality
Execute and example may be configured as about 2 seconds, controllable silicon light modulation to controllable silicon not copped wave i.e. all light, AC input waveform as shown in Figure 4, now
PWM dim signal be certain dutycycle, i.e. dutycycle be corresponding with 30% copped wave percentage ratio, as it is shown in figure 5, constant-current driven module
According to the pwm signal of input, regulation output size of current, it is achieved the brightness illumination of 30%.
In concrete application example, seeing Fig. 6, copped wave detection module 101 farther includes rectification unit 1011, flow-restriction
1012 and amplifying unit 1013, rectification unit 1011 connects zero line and the live wire end of controllable silicon dimmer respectively, is used for avoiding line
Road reverse-conducting, its outfan connects the input of flow-restriction；The outfan of flow-restriction 1012 connects amplifying unit 103
Input；Amplifying unit inputs the input to PWM light-adjusting module after converting the current to the voltage amplified.Concrete application example
In, rectification unit 1011 is and the positive pole of the first diode D1 of connecing and the second diode D2, the first diode D1 connects controlled
The positive pole of the live wire end L of silicon dimmer, the second diode D2 connects the zero line side N of controllable silicon dimmer, the first diode and the
The negative pole of two diodes connects the input of flow-restriction.Flow-restriction 1012 includes the first resistance R1 and second resistance of series connection
One end of R2, the first resistance R1 connects the outfan of rectification unit 1011, and the first resistance R1 and the second resistance R2 is for rectification
The voltage of unit 1011 output carries out dividing potential drop current limliting.Amplifying unit includes the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5,
One end of first audion Q1 and the first electric capacity C1, the 3rd resistance R3 and the base stage of the first audion Q1 connect flow-restriction 1012
Outfan, the colelctor electrode C of the first audion Q1 connects one end of the 5th resistance, and the emitter E of the first audion connects first
One end of electric capacity C1, the other end of the 5th resistance R5 and the first electric capacity C1 inputs extremely as the outfan of copped wave detection module 101
PWM dimming controlling module.The master chip of PWM dimming controlling module uses the microcontroller with PWM generation function.Work process
In: when inputting AC power supplies and being chopped into, the first audion Q1 cut-off, the AN1 pin of microcontroller is drawn high；When input AC power supplies does not has
When being chopped into, the first audion Q1 saturation conduction, AN1 pin drags down；Input condition (the high electricity of microcontroller detection AN1 pin
Put down or low level) judge the copped wave situation of input AC power supplies and then export corresponding PWM dim signal value.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (6)
1. a LED drive circuit compatible with controllable silicon dimmer, for the LED lamp of controllable silicon light modulation, it is characterised in that
Farther include for controllable silicon dimmer regulation being detected and stored to the first shape of the copped wave state of brightness needed for LED lamp
State, is detected and stored controllable silicon dimmer regulation to the copped wave detection module of the second state of fully conducting state, according to the simultaneously
One state carries out the PWM dimming controlling module of PWM output waveform regulation and drives according to receiving PWM output waveform output constant current
The LED constant current of dynamic LED lamp drives module, and the input of described copped wave detection module is connected with controllable silicon dimmer outfan,
The input of described PWM dimming controlling module connects the outfan of copped wave detection module, the output of described PWM dimming controlling module
End connects LED constant current and drives the input of module.
The LED drive circuit compatible with controllable silicon dimmer the most according to claim 1, it is characterised in that described copped wave
Detection module farther includes rectification unit, flow-restriction, amplifying unit, and described rectification unit connects controllable silicon dimmer respectively
Zero line and live wire end, be used for avoiding circuit reverse-conducting, its outfan connect flow-restriction input；Flow-restriction defeated
Go out end and connect the input of amplifying unit；Amplifying unit inputs to PWM light-adjusting module after converting the current to the voltage amplified
Input.
The LED drive circuit compatible with controllable silicon dimmer the most according to claim 2, it is characterised in that described rectification
Unit is and the first diode of connecing and the second diode, and the positive pole of the first diode connects the live wire end of controllable silicon dimmer,
The positive pole of the second diode connects the zero line side of controllable silicon dimmer, and the negative pole of the first diode and the second diode connects current limliting list
The input of unit.
The LED drive circuit compatible with controllable silicon dimmer the most according to claim 2, it is characterised in that described current limliting
Unit includes the first resistance and second resistance of series connection, the outfan of one end connection rectification unit of the first resistance, described first
Resistance and the second resistance are for carrying out dividing potential drop current limliting to the voltage of rectification unit output.
The LED drive circuit compatible with controllable silicon dimmer the most according to claim 2, it is characterised in that described amplification
Unit includes the 3rd resistance, the 4th resistance, the first audion and the first electric capacity, one end of described 3rd resistance and the first audion
Base stage connect the outfan of flow-restriction, the colelctor electrode of the first audion connects one end of the 4th resistance, the first audion
Emitter stage connects one end of the first electric capacity, and the other end of the 4th resistance and the first electric capacity is defeated as the outfan of copped wave detection module
Enter to PWM dimming controlling module.
6., according to the arbitrary described LED drive circuit compatible with controllable silicon dimmer of claim 1 to 5, described PWM dims control
The master chip of molding block is to have PWM to produce the microcontroller of function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620043200.XU CN205546032U (en) | 2016-01-18 | 2016-01-18 | LED drive circuit compatible with silicon controlled rectifier ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620043200.XU CN205546032U (en) | 2016-01-18 | 2016-01-18 | LED drive circuit compatible with silicon controlled rectifier ware |
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| Publication Number | Publication Date |
|---|---|
| CN205546032U true CN205546032U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620043200.XU Expired - Fee Related CN205546032U (en) | 2016-01-18 | 2016-01-18 | LED drive circuit compatible with silicon controlled rectifier ware |
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| CN (1) | CN205546032U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611672A (en) * | 2016-01-18 | 2016-05-25 | 浙江上光照明有限公司 | Light emitting diode (LED) driving circuit compatible with silicon controlled rectifier dimmer |
| CN108633125A (en) * | 2017-03-21 | 2018-10-09 | 上海鸣志自动控制设备有限公司 | A kind of PWM copped wave light adjusting systems modulated using arithmetic progression |
-
2016
- 2016-01-18 CN CN201620043200.XU patent/CN205546032U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611672A (en) * | 2016-01-18 | 2016-05-25 | 浙江上光照明有限公司 | Light emitting diode (LED) driving circuit compatible with silicon controlled rectifier dimmer |
| CN108633125A (en) * | 2017-03-21 | 2018-10-09 | 上海鸣志自动控制设备有限公司 | A kind of PWM copped wave light adjusting systems modulated using arithmetic progression |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20180118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |