CN208079447U - The driving circuit and LED matrix of compatible ballast - Google Patents
The driving circuit and LED matrix of compatible ballast Download PDFInfo
- Publication number
- CN208079447U CN208079447U CN201820291000.5U CN201820291000U CN208079447U CN 208079447 U CN208079447 U CN 208079447U CN 201820291000 U CN201820291000 U CN 201820291000U CN 208079447 U CN208079447 U CN 208079447U
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- China
- Prior art keywords
- module
- detection
- ballast
- current limliting
- capacitance
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Abstract
This programme discloses the driving circuit and LED matrix of compatible ballast, by detecting that access Inductive ballast, control constant-current driven module (104) drive LED light (106)；When detecting access electric ballast, then turn off constant-current driven module (104), and control current limliting module (103) driving LED light (106), so that in electric ballast startup stage, the voltage for starting generation is avoided to burn out LED light (106), and realize the driving effect for LED light (106) compatible ballast, solve the problem of that there is cause startup moment LED light to be burned because that can not be compatible with ballast when LED light substitutes fluorescent lamp in existing LED light actuation techniques.
Description
Technical field
The utility model belongs to electronic circuit technology field, more particularly to the driving circuit and LED matrix of compatible ballast.
Background technology
In lighting area, fluorescent lamp has been widely used between past decades.And it lights fluorescent lamp and then needs
It is driven using ballast, ballast is divided into Inductive ballast and electric ballast two major classes.Either any class ballast,
Being required for the high pressure of about 1000V to trigger when startup could excitation fluorescent lamp.
In normal work, since the impedance of fluorescent lamp is negative resistance charactertistic, then need to utilize Inductive ballast or electronics town
Stream device carries out operating current the work that limitation could be reliable and stable.Therefore, have in traditional florescent lamp fitting and match therewith
The Inductive ballast or electric ballast of set.For Inductive ballast, technical solution is not much different substantially；And electronic ballast
The technical solution of device is various, such as common preheating type, chip preheating type, quick-starting direct, instantaneous starting type, and electronic ballast
Device also has various protections, such as open circuit, short circuit, life termination.
LED light illumination is the current hot spot and trend for illuminating development.As the illumination scheme of a new generation, shone with fluorescent lamp
Bright scheme is compared, and is had energy saving, mercury-free, is stablized many advantages, such as long-life, and drive requirement also fairly simple, is both not required to height
Pressure starts, need not also preheat, it is only necessary to which a constant electric current can be carried out stream driving work.
In existing LED light actuation techniques, it can only realize that alternating current inputs mostly, and if directly in traditional fluorescent lamp
Fluorescent lamp is substituted using LED light in illuminator, it is necessary to ballast is taken out, and the wiring of dimming lamp again, it is no
Then, hundreds of generated when ballast starts to several kilovolts of high pressure will directly burn out the LED light of replacement.
Therefore, in existing LED light actuation techniques there is when LED light substitute fluorescent lamp when, because ballast can not be compatible with
And cause to start the problem of moment LED light is burned.
Utility model content
The purpose of this utility model is to provide the driving circuits and LED matrix of compatible ballast, it is intended to solve existing
There is when LED light substitutes fluorescent lamp in LED light actuation techniques, cause to start moment LED light because ballast can not be compatible with
The problem of being burned.
The utility model first aspect provides a kind of driving circuit of compatible ballast, connects power supply signal, the driving
Circuit includes：
Rectification module for carrying out rectification to the power supply signal；
It is corresponding to export first control signal or the second control letter for detecting access electric ballast or Inductive ballast
Number detection choose module；
Module is chosen with the rectification module and the detection to be connected, for being driven according to the first control signal
The current limliting module of LED light；And
Module is chosen with the rectification module and the detection to be connected, for being driven according to the second control signal
The constant-current driven module of the LED light.
The utility model second aspect provides a kind of LED matrix, including driving circuit and to the driving circuit into
The power supply signal of row power supply, the driving circuit include：
Rectification module for carrying out rectification to the power supply signal；
It is corresponding to export first control signal or the second control letter for detecting access electric ballast or Inductive ballast
Number detection choose module；
Module is chosen with the rectification module and the detection to be connected, for being driven according to the first control signal
The current limliting module of LED light；And
Module is chosen with the rectification module and the detection to be connected, for being driven according to the second control signal
The constant-current driven module of the LED light.
The driving circuit and LED matrix of compatible ballast provided by the utility model, by detecting access inductance ballast
Device, control constant-current driven module drive LED light；When detecting access electric ballast, then constant-current driven module is turned off, and control
Current limliting module drive LED light processed avoids the voltage for starting generation from burning LED light so that in electric ballast startup stage
It is bad, and realize the driving effect for the compatible ballast of LED light, solve in existing LED light actuation techniques there is
When LED light substitutes fluorescent lamp, cause to start the problem of moment LED light is burned because ballast can not be compatible with.
Description of the drawings
Fig. 1 is the modular structure schematic diagram of the driving circuit of compatible ballast provided by the utility model.
Fig. 2 is the exemplary circuit figure of the driving circuit of compatible ballast provided by the utility model.
Fig. 3 is showing for the driving circuit access Inductive ballast for the compatibility ballast that the utility model first embodiment provides
Example circuit diagram.
Fig. 4 is showing for the driving circuit access electric ballast for the compatibility ballast that the utility model second embodiment provides
Example circuit diagram.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The driving circuit and LED matrix of above-mentioned compatibility ballast not only can directly connect alternating current input, but also can be compatible with electricity
Feel ballast or electric ballast.When judging input for alternating current or Inductive ballast, LED light is driven using constant-current driven module
Work；When judging input for electric ballast, it is first turned off all driving circuits and LED light, until electric ballast is completed
The high voltage startup stage, then it is switched to the work of current limliting module drive LED light, to reach the startup stage in electric ballast, keep away
The high pressure for exempting to start generation damages driving circuit and LED light.
Fig. 1 shows the modular structure of the driving circuit of compatible ballast provided by the utility model, for convenience of description,
Only the parts related to this embodiment are shown, and details are as follows：
The driving circuit of above-mentioned compatible ballast, connects power supply signal 101, which includes rectification module 102, detection
Choose module 105, current limliting module 103 and constant-current driven module 104.
Rectification module 102 is used to carry out rectification to power supply signal 101.
Detection chooses module 105 for detecting access electric ballast or Inductive ballast, the first control of corresponding output
Signal or second control signal.
Current limliting module 103 chooses module 105 with rectification module 102 and detection and is connected, for being believed according to the first control
Number driving LED light 106.
Constant-current driven module 104 chooses module 105 with rectification module 102 and detection and is connected, for according to the second control
Signal processed drives LED light 106.
As one embodiment of the utility model, in above-mentioned driving circuit, when the power supply signal 101 of input is alternating current or process
When Inductive ballast, it is that LED light 106 provides energy, and turns off limit that detection, which chooses module 105 and will select constant-current driven module 104,
Flow module 103；When the power supply signal 101 of input is by electric ballast, module 105 is chosen in detection can turn off all electricity first
Road, after electric ballast completes high voltage startup, will select current limliting module 103 is that LED light 106 provides energy, and turns off permanent
Flow drive module 104.
Fig. 2 shows the exemplary circuits of the driving circuit of compatible ballast provided by the utility model, for convenience of description,
Only the parts related to this embodiment are shown, and details are as follows：
As one embodiment of the utility model, above-mentioned rectification module 102 includes rectifier bridge, and rectifier bridge includes the first rectification two
Pole pipe ZD1, the second rectifier diode ZD2, third rectifier diode ZD3 and the 4th rectifier diode ZD4, the first of rectifier bridge
Ac input end and the second ac input end connect power supply signal 101, the first DC output end ground connection of rectifier bridge, and the of rectifier bridge
Two DC output ends are the output end of rectification module 102.
As one embodiment of the utility model, it includes gating switch SW1, mechanical switch that module 105 is chosen in above-mentioned detection
SW2, phase inverter NOT1 and detection chip U1；
The controlled end (i.e. the 1st pin in Fig. 2) of gating switch SW1 connects rectification module 102, and the first of gating switch SW1
Gated end (i.e. the 2nd pin in Fig. 2) connects constant-current driven module 104, the second gated end (i.e. in Fig. 2 of gating switch SW1
3 pins) connect the first end of mechanical switch SW2, the second end ground connection of mechanical switch SW2, the input terminal IN1 of detection chip U1 and the
One output end OUT1 connects current limliting module 103, and the second output terminal OUT2 of detection chip U1 connects the input terminal of phase inverter NOT1, reverse phase
The output of device NOT1 terminates constant-current driven module 104.In the present embodiment, detection chip U1 uses model LTC1403ACMSE
Detection chip, certainly, the model of detection chip does not limit, as long as can reach and the work(described in the present embodiment detection chip U1
It can act on and also may be used.It is replaced specifically, existing detection gating circuit can also be used in detection chip U1, as long as the present embodiment can be reached
Function described in detection chip U1 also may be used.
As one embodiment of the utility model, above-mentioned current limliting module 103 includes current limliting chip U2, the input of current limliting chip U2
End (i.e. the 5th pin of Fig. 2) and output end (i.e. the 6th pin of Fig. 2) connect detection and choose module 105, and current limliting chip U2's is controlled
End (i.e. the 3rd pin of Fig. 2) connects rectification module 102, ground terminal (i.e. the 4th pin of Fig. 2) ground connection of current limliting chip U2, current limliting core
The first serial end (i.e. the 1st pin of Fig. 2) of piece U2 and second serial end (i.e. the 2nd pin of Fig. 2) connect the first test side respectively
Sub- R1 and the second detection terminal R2.In the present embodiment, current limliting chip U2 uses the current limliting chip of model RT9701YB1721,
Certainly, the model of current limliting chip does not limit, and also may be used with the function described in the present embodiment current limliting chip U2 as long as can reach.
It is replaced specifically, existing current-limiting circuit can also be used in current limliting chip U2, as long as can reach described in the present embodiment current limliting chip U2
Function also may be used.
As one embodiment of the utility model, above-mentioned constant-current driven module 104 include the first capacitance C1, the second capacitance C2,
First inductance L1, the first diode D1, first switch pipe Q1 and control circuit；
The first end of first capacitance C1 connects with the first end of the first inductance L1 and is connected with rectification module 102 altogether, and first
The second end of capacitance C1 is grounded, and the anode of the second end of the first inductance L1 and the first diode D1 and first switch pipe Q1's is defeated
Enter end to connect altogether, module 105 is chosen in the input of control circuit termination detection, the output termination first switch pipe Q1 of control circuit by
End, the output end ground connection of first switch pipe Q1 are controlled, the cathode of the first diode D1 connects the first end of the second capacitance C2, the second capacitance
Module 105 is chosen in the second termination detection of C2.First switch pipe Q1 can be field-effect tube or triode, the leakage of field-effect tube
Pole, source electrode and grid correspond to input, output end and the controlled end of first switch pipe Q1 respectively, the collector of triode,
Emitter and base stage correspond to input, output end and the controlled end of first switch pipe Q1 respectively.Above-mentioned control circuit is
The prior art, the control circuit are controlled constant-current driven module 104.
Fig. 3 shows the driving circuit access Inductive ballast for the compatibility ballast that the utility model first embodiment provides
Exemplary circuit, for convenience of description, only the parts related to this embodiment are shown, and details are as follows：
As one embodiment of the utility model, when input ACL and ACN meets alternating current VCC or passes through Inductive ballast ZL1,
Detection chooses module 105 by detecting that the first detection terminal R1 and the second detection terminal R2 are connectionless, then exports the second control
Signal processed makes mechanical switch SW2 be held off, then the controlled end of SW1 gating switches is connected with the second gated end, and passes through
Reverser NOT1 makes control circuit work.At this point, alternating current VCC is directly inputted or by Inductive ballast ZL1, and sequentially pass through
Rectifier bridge, the first capacitance C1, the first inductance L1, the first diode D1, the second capacitance C2, first switch pipe Q1, control circuit with
And gating switch SW1, then give LED light 106 (Fig. 3 is indicated using light emitting diode D2) to provide energy.
Fig. 4 shows the driving circuit access electric ballast for the compatibility ballast that the utility model second embodiment provides
Exemplary circuit, for convenience of description, only the parts related to this embodiment are shown, and details are as follows：
As one embodiment of the utility model, when input meets electric ballast ZL2, detection chooses module 105 and passes through inspection
The 4th pin and the 3rd pin that the first detection terminal R1 and the second detection terminal R2 is connected respectively to electric ballast ZL1 are measured,
Detection chooses module 105 and keeps all driving circuits to turn off by second output terminal, until the startup of electric ballast ZL1 and pre-
The hot phase completes, and then exports first control signal and mechanical switch SW2 is connected, then the controlled end of gating switch SW1 and first
Gated end connects, and by reverser NOT1 control circuit is turned off.At this point, alternating current VCC passes through electric ballast ZL1, whole
Bridge, current limliting module 103, gating switch SW1, mechanical switch SW2 and the second capacitance C2 are flowed, (Fig. 4 is using luminous to LED light 106
Diode D2 is indicated) energy is provided.
The utility model additionally provides a kind of LED matrix, which includes driving circuit as described above and right
The power supply signal that the driving circuit is powered.
To sum up, the driving circuit and LED matrix for the compatibility ballast that the utility model embodiment provides, are connect by detecting
Enter Inductive ballast, control constant-current driven module drives LED light；When detecting access electric ballast, then constant current drive is turned off
Dynamic model block, and current limliting module drive LED light is controlled, so that in electric ballast startup stage, avoid starting the electricity generated
Pressure burns out LED light, and realizes the driving effect for the compatible ballast of LED light, solves existing LED light driving skill
There is when LED light substitutes fluorescent lamp in art, cause to start asking of being burned of moment LED light because ballast can not be compatible with
Topic.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of driving circuit of compatible ballast, connects power supply signal, which is characterized in that the driving circuit includes：
Rectification module for carrying out rectification to the power supply signal；
For detecting access electric ballast or Inductive ballast, corresponding first control signal or the second control signal of exporting
Module is chosen in detection；
Module is chosen with the rectification module and the detection to be connected, for driving LED according to the first control signal
The current limliting module of lamp；And
Module is chosen with the rectification module and the detection to be connected, for according to described in second control signal driving
The constant-current driven module of LED light.
2. driving circuit as described in claim 1, which is characterized in that the rectification module includes rectifier bridge,
The first ac input end and the second ac input end of the rectifier bridge connect the power supply signal, and the first of the rectifier bridge
DC output end is grounded, and the second DC output end of the rectifier bridge is the output end of the rectification module.
3. driving circuit as described in claim 1, which is characterized in that the detection chooses module and includes：
Gating switch, mechanical switch, phase inverter and detection chip；
First gating of the controlled termination rectification module of the gating switch, the gating switch terminates the constant current driving
Module, the second gating of the gating switch terminate the first end of the mechanical switch, and the second end of the mechanical switch is grounded,
The input terminal of the detection chip and the first output terminate the current limliting module, and the second output terminal of the detection chip connects described
The output of the input terminal of phase inverter, the phase inverter terminates the constant-current driven module.
4. driving circuit as described in claim 1, which is characterized in that the current limliting module includes current limliting chip,
The input terminal of the current limliting chip and output terminate the detection selection module, described in the controlled termination of the current limliting chip
Rectification module, the ground terminal ground connection of the current limliting chip.
5. driving circuit as described in claim 1, which is characterized in that the constant-current driven module includes：
First capacitance, the second capacitance, the first inductance, the first diode, first switch pipe and control circuit；
The first end of first capacitance connects with the first end of first inductance and is connected with the rectification module altogether, described
The second end of first capacitance is grounded, and the second end of first inductance is opened with the anode of first diode and described first
The input terminal for closing pipe connects altogether, and the input of the control circuit terminates the detection and chooses module, the output end of the control circuit
The controlled end of the first switch pipe, the output end ground connection of the first switch pipe are connect, the cathode of first diode meets institute
The first end of the second capacitance is stated, module is chosen in the second termination detection of second capacitance.
6. a kind of LED matrix, including driving circuit and the power supply signal that is powered to the driving circuit, feature exist
In the driving circuit includes：
Rectification module for carrying out rectification to the power supply signal；
For detecting access electric ballast or Inductive ballast, corresponding first control signal or the second control signal of exporting
Module is chosen in detection；
Module is chosen with the rectification module and the detection to be connected, for driving LED according to the first control signal
The current limliting module of lamp；And
Module is chosen with the rectification module and the detection to be connected, for according to described in second control signal driving
The constant-current driven module of LED light.
7. LED matrix as claimed in claim 6, which is characterized in that the rectification module includes rectifier bridge,
The first ac input end and the second ac input end of the rectifier bridge connect the power supply signal, and the first of the rectifier bridge
DC output end is grounded, and the second DC output end of the rectifier bridge is the output end of the rectification module.
8. LED matrix as claimed in claim 6, which is characterized in that the detection chooses module and includes：
Gating switch, mechanical switch, phase inverter and detection chip；
First gating of the controlled termination rectification module of the gating switch, the gating switch terminates the constant current driving
Module, the second gating of the gating switch terminate the first end of the mechanical switch, and the second end of the mechanical switch is grounded,
The input terminal of the detection chip and the first output terminate the current limliting module, and the second output terminal of the detection chip connects described
The output of the input terminal of phase inverter, the phase inverter terminates the constant-current driven module.
9. LED matrix as claimed in claim 6, which is characterized in that the current limliting module includes current limliting chip,
The input terminal of the current limliting chip and output terminate the detection selection module, described in the controlled termination of the current limliting chip
Rectification module, the ground terminal ground connection of the current limliting chip.
10. LED matrix as claimed in claim 6, which is characterized in that the constant-current driven module includes：
First capacitance, the second capacitance, the first inductance, the first diode, first switch pipe and control circuit；
The first end of first capacitance connects with the first end of first inductance and is connected with the rectification module altogether, described
The second end of first capacitance is grounded, and the second end of first inductance is opened with the anode of first diode and described first
The input terminal for closing pipe connects altogether, and the input of the control circuit terminates the detection and chooses module, the output end of the control circuit
The controlled end of the first switch pipe, the output end ground connection of the first switch pipe are connect, the cathode of first diode meets institute
The first end of the second capacitance is stated, module is chosen in the second termination detection of second capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820291000.5U CN208079447U (en) | 2018-03-01 | 2018-03-01 | The driving circuit and LED matrix of compatible ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820291000.5U CN208079447U (en) | 2018-03-01 | 2018-03-01 | The driving circuit and LED matrix of compatible ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208079447U true CN208079447U (en) | 2018-11-09 |
Family
ID=64039513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820291000.5U Expired - Fee Related CN208079447U (en) | 2018-03-01 | 2018-03-01 | The driving circuit and LED matrix of compatible ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208079447U (en) |
-
2018
- 2018-03-01 CN CN201820291000.5U patent/CN208079447U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181109 Termination date: 20200301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |