CN107770918A - A kind of constant current four-in-one light adjusting circuit and its method - Google Patents
A kind of constant current four-in-one light adjusting circuit and its method Download PDFInfo
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- CN107770918A CN107770918A CN201711178190.6A CN201711178190A CN107770918A CN 107770918 A CN107770918 A CN 107770918A CN 201711178190 A CN201711178190 A CN 201711178190A CN 107770918 A CN107770918 A CN 107770918A
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- current driven
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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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Abstract
The present invention provides a kind of constant current four-in-one light adjusting circuit, and the constant current four-in-one light adjusting circuit includes light-adjusting module, sampling module, division module and constant-current driven module；Power supply termination input power, earth terminal ground connection, the positive pole of output termination series LED lamp group of the constant-current driven module；The output of the sampling module terminates the feedback end of the constant-current driven module；The power end of the light-adjusting module intercepts the output end of the division module, and output end connects the Enable Pin of the constant-current driven module；Division module described in the input connection input power of the division module is used to provide rated operational voltage for the light-adjusting module.Electric current can be reduced to rated current by the present invention, and power output is adjusted, so as to be brought convenience to user.
Description
Technical field
The present invention relates to circuit field, more particularly to a kind of constant current four-in-one light adjusting circuit and its method.
Background technology
LED is widely used as light source, various LED drive circuits consequently also occurs.Due to LED
Itself is harsher to operating voltage requirement, and overtension is too low all to cause LED operating current fluctuations, so typically
The type of drive of constant current voltage limiting is used to LED.Thus, when LED is as current mode workload, flow through LED's
Electric current must assure that within rated current.Set more using the integrated high-frequency model of integration in the low-voltage place of direct current at present
LED drivings are counted, but these type of drive are all firm power output, it is impossible to power output is adjusted, and then illumination is strong
Degree can not be adjusted, and serious inconvenience is brought to user.
The content of the invention
Based on this, it is necessary to provide a kind of constant current four-in-one light adjusting circuit.
A kind of constant current four-in-one light adjusting circuit, the constant current four-in-one light adjusting circuit include light-adjusting module, sampling module, divided
Die block and constant-current driven module；
Power supply termination input power, earth terminal ground connection, the positive pole of output termination series LED lamp group of the constant-current driven module,
The negative pole of the series LED lamp group connects the output end of the sampling module, and the output of the sampling module terminates the constant current and driven
The feedback end of dynamic model block, the earth terminal ground connection of the sampling module；
The power end of the light-adjusting module intercepts the output end of the division module, and output end connects the constant-current driven module
Enable Pin, division module described in the input connection input power of the division module are specified for being provided for the light-adjusting module
Operating voltage, the light-adjusting module are used to export burst modem signal, the constant current driving to the constant-current driven module
Module controls output current size according to the burst modem signal, and the sampling module is used to sample the series LED
The electric current of lamp group simultaneously feeds back to the constant-current driven module, and the feedback current that the constant-current driven module receives exceedes specified electricity
During flow valuve, the constant-current driven module controls the electric current of the series LED lamp group to be reduced to rated current.
In one of the embodiments, the light-adjusting module includes chip, electric capacity C5, divider resistance RA1 and partial pressure electricity
Hinder RB1；The divider resistance RA1 and the divider resistance RB1 are series between power end and the threshold value end of the chip, institute
The points of common connection for stating the divider resistance RA1 and divider resistance RB1 connects the discharge end of the chip, the electric capacity C3's
The triggering end of the one termination chip, other end ground connection, the triggering end of the chip are connected with threshold value end.
In one of the embodiments, the division module includes divider resistance R1, voltage-stabiliser tube ZD1 and electrochemical capacitor C4；
The divider resistance R1 mono- terminates input power, another termination voltage-stabiliser tube ZD1 negative pole, and the negative pole of the voltage-stabiliser tube ZD1 is grounded,
The electrochemical capacitor C4 is in parallel with the voltage-stabiliser tube ZD1, wherein, the positive pole of the electrochemical capacitor C4 connects the voltage-stabiliser tube ZD1's
Negative pole, the divider resistance R1 and voltage-stabiliser tube ZD1 points of common connection are the output end of the division module.
In one of the embodiments, the constant-current driven module includes chip, inductance L1, electric capacity C3；The inductance
L1 mono- terminates input power, the switch terminals of another termination chip, the input termination input power of the chip, feedback termination
The output end of the sampling module, the output end of the enabled termination light-adjusting module, earth terminal ground connection；Described electric capacity C3 one end
Connect the common port of the chip, other end ground connection.
In one of the embodiments, in addition to electric capacity C1, the electric capacity C1 mono- terminate input power, another termination
Ground.
In one of the embodiments, in addition to diode D1, diode D1 positive pole connects constant current driving mould
The output end of block, the negative pole of the diode D1 connect the positive pole of the series LED lamp group.
In one of the embodiments, in addition to electric capacity C2, the electric capacity C2 mono- terminate the negative pole of the diode D1, separately
One end is grounded.
In one of the embodiments, the sampling module includes sampling resistor Rset, the sampling resistor Rset mono-
End ground connection, the other end are the output end of the sampling module.
A kind of implementation method of constant current four-in-one light adjusting circuit, methods described include：
Light-adjusting module, sampling module, division module and constant-current driven module are provided；
By the power supply termination input power of the constant-current driven module, earth terminal ground connection, output termination series LED lamp group just
Pole, the negative pole of the series LED lamp group connect the output end of the sampling module, and the output of the sampling module terminates the constant current
The feedback end of drive module, the earth terminal ground connection of the sampling module；
The power end of the light-adjusting module is intercepted to the output end of the division module, output end connects the constant-current driven module
Enable Pin, division module described in the input connection input power of the division module is used to for the light-adjusting module provide volume
Fixed working voltage, the light-adjusting module are used to export burst modem signal to the constant-current driven module.
In one of the embodiments, methods described also includes：
The constant-current driven module controls output current size according to the burst modem signal；
The sampling module is used to sample the electric current of the series LED lamp group and feeds back to the constant-current driven module；
When the feedback current that the constant-current driven module receives exceedes load current value, the constant-current driven module controls the string
The electric current of connection LED lamp groups is reduced to rated current.
Beneficial effect：
The invention provides a kind of constant current four-in-one light adjusting circuit, the constant current four-in-one light adjusting circuit includes light-adjusting module, adopted
Egf block, division module and constant-current driven module；The power supply of the constant-current driven module terminates input power, earth terminal is grounded,
The positive pole of output termination series LED lamp group, the negative pole of the series LED lamp group connects the output end of the sampling module, described to adopt
The output of egf block terminates the feedback end of the constant-current driven module, the earth terminal ground connection of the sampling module；The light modulation
The power end of module intercepts the output end of the division module, and output end connects the Enable Pin of the constant-current driven module, described
Division module described in the input connection input power of division module is used to provide rated operational voltage for the light-adjusting module, institute
State light-adjusting module to be used to export burst modem signal to the constant-current driven module, the constant-current driven module is according to
Burst modem signal controls output current size, and the sampling module is for sampling the electric current of the series LED lamp group simultaneously
The constant-current driven module is fed back to, when the feedback current that the constant-current driven module receives exceedes load current value, the perseverance
Stream drive module controls the electric current of the series LED lamp group to be reduced to rated current.
Brief description of the drawings
Fig. 1 is a kind of circuit theory diagrams of constant current four-in-one light adjusting circuit.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
A kind of Fig. 1 constant current four-in-one light adjusting circuit is refer to, the constant current four-in-one light adjusting circuit includes light-adjusting module
102nd, sampling module 104, division module 101 and constant-current driven module 103；
The power supply termination input power of the constant-current driven module 103, earth terminal ground connection, output are terminating series LED lamp group just
Pole, the negative pole of the series LED lamp group connect the output end of the sampling module, and the output of the sampling module terminates the constant current
The feedback end of drive module, the earth terminal ground connection of the sampling module；
The power end of the light-adjusting module 102 intercepts the output end of the division module, and output end connects the constant current driving mould
The Enable Pin of block, division module described in the input connection input power of the division module are used to provide for the light-adjusting module
Rated operational voltage, the light-adjusting module are used to export burst modem signal, the constant current to the constant-current driven module
Drive module controls output current size according to the burst modem signal, and the sampling module is used to sample the series connection
The electric current of LED light group simultaneously feeds back to the constant-current driven module, and the feedback current that the constant-current driven module receives exceedes specified
During current value, the constant-current driven module controls the electric current of the series LED lamp group to be reduced to rated current.
In one of the embodiments, the light-adjusting module includes chip, electric capacity C5, divider resistance RA1 and partial pressure electricity
Hinder RB1；The divider resistance RA1 and the divider resistance RB1 are series between power end and the threshold value end of the chip, institute
The points of common connection for stating the divider resistance RA1 and divider resistance RB1 connects the discharge end of the chip, the electric capacity C3's
The triggering end of the one termination chip, other end ground connection, the triggering end of the chip are connected with threshold value end.
In one of the embodiments, the division module includes divider resistance R1, voltage-stabiliser tube ZD1 and electrochemical capacitor C4；
The divider resistance R1 mono- terminates input power, another termination voltage-stabiliser tube ZD1 negative pole, and the negative pole of the voltage-stabiliser tube ZD1 is grounded,
The electrochemical capacitor C4 is in parallel with the voltage-stabiliser tube ZD1, wherein, the positive pole of the electrochemical capacitor C4 connects the voltage-stabiliser tube ZD1's
Negative pole, the divider resistance R1 and voltage-stabiliser tube ZD1 points of common connection are the output end of the division module.
In one of the embodiments, the constant-current driven module includes chip, inductance L1, electric capacity C3；The inductance
L1 mono- terminates input power, the switch terminals of another termination chip, the input termination input power of the chip, feedback termination
The output end of the sampling module, the output end of the enabled termination light-adjusting module, earth terminal ground connection；The electric capacity C3 mono- is terminated
The common port of the chip, other end ground connection.
In one of the embodiments, in addition to electric capacity C1, the electric capacity C1 mono- terminate input power, another termination
Ground.
In one of the embodiments, in addition to diode D1, diode D1 positive pole connects constant current driving mould
The output end of block, the negative pole of the diode D1 connect the positive pole of the series LED lamp group.
In one of the embodiments, in addition to electric capacity C2, the electric capacity C2 mono- terminate the negative pole of the diode D1, separately
One end is grounded.
In one of the embodiments, the sampling module includes sampling resistor Rset, the sampling resistor Rset mono-
End ground connection, the other end are the output end of the sampling module.
The invention provides a kind of constant current four-in-one light adjusting circuit, the constant current four-in-one light adjusting circuit includes light modulation mould
Block, sampling module, division module and constant-current driven module；Power supply termination input power, the earth terminal of the constant-current driven module
Ground connection, the positive pole of output termination series LED lamp group, the negative pole of the series LED lamp group meet the output end of the sampling module, institute
The output for stating sampling module terminates the feedback end of the constant-current driven module, the earth terminal ground connection of the sampling module；It is described
The power end of light-adjusting module intercepts the output end of the division module, and output end connects the Enable Pin of the constant-current driven module,
Division module described in the input connection input power of the division module is used to provide nominal operation electricity for the light-adjusting module
Pressure, the light-adjusting module are used to export burst modem signal, the constant-current driven module root to the constant-current driven module
Output current size is controlled according to the burst modem signal, the sampling module is used to sample the series LED lamp group
Electric current simultaneously feeds back to the constant-current driven module, when the feedback current that the constant-current driven module receives exceedes load current value,
The constant-current driven module controls the electric current of the series LED lamp group to be reduced to rated current.
A kind of implementation method of constant current four-in-one light adjusting circuit, methods described include：
Light-adjusting module, sampling module, division module and constant-current driven module are provided；
By the power supply termination input power of the constant-current driven module, earth terminal ground connection, output termination series LED lamp group just
Pole, the negative pole of the series LED lamp group connect the output end of the sampling module, and the output of the sampling module terminates the constant current
The feedback end of drive module, the earth terminal ground connection of the sampling module；
The power end of the light-adjusting module is intercepted to the output end of the division module, output end connects the constant-current driven module
Enable Pin, division module described in the input connection input power of the division module is used to for the light-adjusting module provide volume
Fixed working voltage, the light-adjusting module are used to export burst modem signal to the constant-current driven module.
In one of the embodiments, methods described also includes：
The constant-current driven module controls output current size according to the burst modem signal；
The sampling module is used to sample the electric current of the series LED lamp group and feeds back to the constant-current driven module；
When the feedback current that the constant-current driven module receives exceedes load current value, the constant-current driven module controls the string
The electric current of connection LED lamp groups is reduced to rated current.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, lance is not present in the combination of these technical characteristics
Shield, all it is considered to be the scope of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of constant current four-in-one light adjusting circuit, it is characterised in that the constant current four-in-one light adjusting circuit includes light-adjusting module, adopted
Egf block, division module and constant-current driven module；
Power supply termination input power, earth terminal ground connection, the positive pole of output termination series LED lamp group of the constant-current driven module；
The output of the sampling module terminates the feedback end of the constant-current driven module；
The power end of the light-adjusting module intercepts the output end of the division module, and output end connects the constant-current driven module
Enable Pin；
Division module described in the input connection input power of the division module is used to provide specified work for the light-adjusting module
Make voltage.
2. constant current four-in-one light adjusting circuit according to claim 1, it is characterised in that the light-adjusting module include chip,
Electric capacity C5, divider resistance RA1 and divider resistance RB1.
3. constant current four-in-one light adjusting circuit according to claim 1, it is characterised in that the division module includes partial pressure
Resistance R1, voltage-stabiliser tube ZD1 and electrochemical capacitor C4.
4. constant current four-in-one light adjusting circuit according to claim 1, it is characterised in that the constant-current driven module includes core
Piece, inductance L1, electric capacity C3.
5. the constant current four-in-one light adjusting circuit according to claim 1, it is characterised in that also including electric capacity C1, the electricity
Hold C1 mono- and terminate input power, other end ground connection.
6. the constant current four-in-one light adjusting circuit according to claim 1, it is characterised in that described also including diode D1
Diode D1 positive pole connects the output end of the constant-current driven module, and the negative pole of the diode D1 connects the series LED
The positive pole of lamp group.
7. the constant current four-in-one light adjusting circuit according to claim 6, it is characterised in that also including electric capacity C2, the electric capacity
C2 mono- terminates the negative pole of the diode D1, other end ground connection.
8. constant current four-in-one light adjusting circuit according to claim 1, it is characterised in that the sampling module includes sampling electricity
Rset is hindered, sampling resistor Rset one end ground connection, the other end is the output end of the sampling module.
9. a kind of implementation method of constant current four-in-one light adjusting circuit, it is characterised in that methods described includes：
Light-adjusting module, sampling module, division module and constant-current driven module are provided；
By the power supply termination input power of the constant-current driven module, earth terminal ground connection, output termination series LED lamp group just
Pole, the negative pole of the series LED lamp group connect the output end of the sampling module, and the output of the sampling module terminates the constant current
The feedback end of drive module, the earth terminal ground connection of the sampling module；
The power end of the light-adjusting module is intercepted to the output end of the division module, output end connects the constant-current driven module
Enable Pin, division module described in the input connection input power of the division module is used to for the light-adjusting module provide volume
Fixed working voltage, the light-adjusting module are used to export burst modem signal to the constant-current driven module.
10. according to the method for claim 9, it is characterised in that methods described also includes：
The constant-current driven module controls output current size according to the burst modem signal；
The sampling module is used to sample the electric current of the series LED lamp group and feeds back to the constant-current driven module；
When the feedback current that the constant-current driven module receives exceedes load current value, the constant-current driven module controls the string
The electric current of connection LED lamp groups is reduced to rated current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711178190.6A CN107770918A (en) | 2017-11-23 | 2017-11-23 | A kind of constant current four-in-one light adjusting circuit and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711178190.6A CN107770918A (en) | 2017-11-23 | 2017-11-23 | A kind of constant current four-in-one light adjusting circuit and its method |
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| Publication Number | Publication Date |
|---|---|
| CN107770918A true CN107770918A (en) | 2018-03-06 |
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ID=61278697
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711178190.6A Pending CN107770918A (en) | 2017-11-23 | 2017-11-23 | A kind of constant current four-in-one light adjusting circuit and its method |
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| CN (1) | CN107770918A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047601A1 (en) * | 2019-09-10 | 2021-03-18 | 嘉兴山蒲照明电器有限公司 | Light-emitting diode lamp illumination system, dimmer and illumination apparatus thereof, and dimming control method therefor |
-
2017
- 2017-11-23 CN CN201711178190.6A patent/CN107770918A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047601A1 (en) * | 2019-09-10 | 2021-03-18 | 嘉兴山蒲照明电器有限公司 | Light-emitting diode lamp illumination system, dimmer and illumination apparatus thereof, and dimming control method therefor |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180306 |
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| WD01 | Invention patent application deemed withdrawn after publication |