CN206948655U - The LED drive circuit of controllable leakage current and compatible ballast - Google Patents
The LED drive circuit of controllable leakage current and compatible ballast Download PDFInfo
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- CN206948655U CN206948655U CN201720291832.2U CN201720291832U CN206948655U CN 206948655 U CN206948655 U CN 206948655U CN 201720291832 U CN201720291832 U CN 201720291832U CN 206948655 U CN206948655 U CN 206948655U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The LED drive circuit of a kind of controllable leakage current and compatible ballast, it is characterised in that the LED drive circuit of the controllable leakage current and compatible ballast includes input circuit, rectification circuit, energy supply control module and the LED load module being sequentially connected；The LED drive circuit of the controllable leakage current and compatible ballast also includes the leakproof electric control module for connecting the rectification circuit and the energy supply control module；The leakproof electric control module is used for the output end voltage situation according to the rectification circuit, controls the working condition of the energy supply control module.The LED drive circuit of controllable leakage current of the present utility model and compatible ballast sets the leakproof electric control module that can detect the Output Voltage in Rectified Circuits; the size of leakage current caused by order can be limited effectively; protection is provided when LED lamp is safeguarded in installation for user; simultaneously; by adjusting the structure of the input circuit, make the LED drive circuit can compatible ballast.
Description
Technical field
Electronic circuit is the utility model is related to, is driven more particularly to the LED of a kind of controllable leakage current and compatible ballast
Dynamic circuit.
Background technology
LED drive circuit is an important component of LED lamp, and its effect is to be used for incoming transport power supply, and will be handed over
Stream electricity is converted to direct current and provides power supply for LED load.LED drive circuit has two inputs, is respectively used to connect civil power
Live wire and zero line.In LED lamp assembling or maintenance process, the input that can have LED drive circuit electrically connects with city,
The situation of another input Wei Yu cities electrical connection.In this case, due to not fully exhausted between two inputs of LED drive circuit
Edge, if the input of LED drive circuit Wei Yu cities electrical connection and human contact, have the possibility that leakage current flows through human body,
The I＆ M process of LED lamp is made potential safety hazard to be present；Meanwhile the lamp socket of part mounted LED lamp tool carries ballast, is
The versatility of LED drive circuit brings limitation.
Utility model content
Based on this, the utility model provides a kind of LED drive circuit for limiting leakage current and the compatible ballast of energy.
In order to realize the purpose of this utility model, the utility model uses following technical scheme：
A kind of LED drive circuit of controllable leakage current and compatible ballast, it is characterised in that including：It is sequentially connected
Input circuit, rectification circuit, energy supply control module and LED load module；The controllable leakage current and compatible ballast
LED drive circuit also includes the leakproof electric control module for connecting the rectification circuit and the energy supply control module；The input
Circuit is provided with some inputs；The input circuit is provided with some output ends；The input of the input circuit includes the first electricity
Can connection end, the second electric energy connection end, the 3rd electric energy connection end and the 4th electric energy connection end；The output end bag of the input circuit
Include the first rectification connection end, the second rectification connection end, the 3rd rectification connection end and the 4th rectification connection end；The input circuit bag
Include buffering electric capacity CX1, CX2, CX3, discharge resistance string RX1, RX2, RX3, protective tube F1, F2, F3 and piezo-resistance VR1, VR2,
VR3；The first electric energy connection end, the second electric energy connection end and the 3rd electric energy connection end respectively by the protective tube F1, F2,
F3 is connected with the first rectification connection end, the second rectification connection end and the 3rd rectification connection end, the 4th electric energy connection end
Directly it is connected with the 4th rectification connection end；The energy supply control module is provided with anode connection terminal, signal receiving end, positive supply
End and negative supply side；The anode connection terminal of the energy supply control module is connected with the rectification circuit.
The LED drive circuit of controllable leakage current of the present utility model and compatible ballast can be detected described whole by setting
The leakproof electric control module of current circuit output voltage, the size of leakage current can be limited effectively caused by order, installed for user
Protection is provided when safeguarding LED lamp, leakage current is avoided and injury of getting an electric shock is caused to user, meanwhile, by adjusting the input
The structure of circuit, make the LED drive circuit can compatible ballast.
In one of the embodiments, one end of the piezo-resistance VR1 connects the first rectification company of the input circuit
End is connect, the other end of the piezo-resistance VR1 connects the second rectification connection end of the input circuit；The piezo-resistance VR2
One end connect the second rectification connection end of the input circuit, the other end connection input electricity of the piezo-resistance VR2
The 3rd rectification connection end on road；One end of the piezo-resistance VR3 connects the 3rd rectification connection end of the input circuit, described
The piezo-resistance VR3 other end connects the 4th rectification connection end of the input circuit；
One end of the buffering electric capacity CX1 connects the first rectification connection end of the input circuit, the buffering electric capacity CX1
The other end connect the second rectification connection end of the input circuit；One end connection input electricity of the buffering electric capacity CX2
The second rectification connection end on road, the other end of the buffering electric capacity CX2 connect the 3rd rectification connection end of the input circuit；Institute
The one end for stating buffering electric capacity CX3 connects the 3rd rectification connection end of the input circuit 10, the other end of the buffering electric capacity CX3
Connect the 4th rectification connection end of the input circuit；One end of the discharge resistance string RX1 connects the of the input circuit
One rectification connection end, the other end of the discharge resistance string RX1 connect the second rectification connection end of the input circuit；It is described to put
Electric resistance string RX2 one end connects the second rectification connection end of the input circuit, and the other end of the discharge resistance string RX2 connects
Connect the 3rd rectification connection end of the input circuit；One end of the discharge resistance string RX3 connects the 3rd of the input circuit
Rectification connection end, the other end of the discharge resistance string RX3 connect the 4th rectification connection end of the input circuit.
In one of the embodiments, the energy supply control module includes electric capacity C1, C2, C3, C4, C5, C6, resistance string
RS1, RS2, parallel resistance array RP1, resistance R5, R6, R7, R10, diode D1, D2, inductance L1, L2 and chip U1；
The anode connection terminal of the energy supply control module is connected with the rectification circuit；One end of the electric capacity C1 is as institute
State the anode connection terminal of energy supply control module；One end of the electric capacity C1 is connected with the rectification circuit；The diode D1's
Negative electrode is connected with one end of the electric capacity C1；The one end of the negative electrode of the diode D1 also with the electric capacity C2 is connected；Described two
The one end of pole pipe D1 negative electrode also with the resistance string RS1 is connected；The negative electrode of the diode D1 also with the electric capacity C3 one
End connection；The one end of the negative electrode of the diode D1 also with the electric capacity C6 is connected；The negative electrode of the diode D1 also with it is described
Resistance R10 one end connection；The anode of the diode D1 is connected with the other end of the electric capacity C1；The chip U1 is provided with piece
Select pin, the first floating ground pin, the second floating ground pin, energization pins, compensation pin, frequency adjustment pin and switched pins；Institute
The anode for stating diode D1 also floats ground pin with the first of the chip U1, the second floating ground pin is connected；The resistance string RS1's
The other end is connected with the energization pins of the chip U1；The other end of the electric capacity C2 is connected with one end of the resistance R5；Institute
The one end of the electric capacity C2 other end also with the inductance L1 is stated to be connected；The other end of the electric capacity C2 also with the parallel resistance battle array
Arrange RP1 one end connection；The one end of the other end of the electric capacity C2 also with the resistance string RS2 is connected；The resistance R5's is another
Signal receiving end of the one end as the energy supply control module；The other end of the other end of the resistance R5 and the inductance L1 connects
Connect；The other end of the resistance R5 is connected with the other end of the electric capacity C3；The other end of the parallel resistance array RP1 and institute
State chip U1 chip select pin connection；The resistance string RS2 is provided with node；The node of the resistance string RS2 and the chip
U1 switched pins connection；The inductance L2 is provided with the first butt end, the second butt end, the 3rd butt end and the 4th butt end；
The first butt end of the inductance L2 is connected with one end of the resistance string RS2；The second butt end of the inductance L2 with it is described
Diode D2 anode connection；The other end of the second butt end of the inductance L2 also with the resistance string RS2 is connected；Described two
Pole pipe D2 negative electrode is connected with one end of the resistance R6；The energization pins of the other end of the resistance R6 and the chip U1 connect
Connect；The one end of the other end of the resistance R6 also with the electric capacity C4 is connected；The other end of the electric capacity C4 and the chip U1
Compensation pin connection；The one end of the other end of the electric capacity C4 also with the electric capacity C5 is connected；The other end of the electric capacity C5
It is connected with one end of the resistance R7；The other end of the resistance R7 is connected with the frequency adjustment pin of the chip U1；It is described
Positive supply side of the resistance R10 one end as the energy supply control module；The other end of the resistance R10 is as the power supply control
The negative supply side of molding block；The other end of the resistance R10 is connected with the 3rd butt end of the inductance L2；The electric capacity C6's
The other end is connected with the 3rd butt end of the inductance L2；The 4th butt end of the inductance L2 is floating with the first of the chip U1
Ground pin and the second floating ground pin connection.
In one of the embodiments, resistance string RS1, RS2 includes the resistance of some series connection；The parallel resistance battle array
Row RP1 includes some resistance parallel with one another；The electric capacity C6 is electrochemical capacitor, positive pole and the diode of the electric capacity C6
D1 negative electrode connection；The negative pole of the electric capacity C6 is connected with the 3rd butt end of the inductance L2.
In one of the embodiments, the leakproof electric control module is provided with some inputs and some control terminals.
In one of the embodiments, the input of the leakproof electric control module includes positive pole incoming end, negative pole accesses
End；The control terminal of the leakproof electric control module includes electric leakage adjustment end.
In one of the embodiments, the leakproof electric control module includes electric capacity C7, C8, C9, clamp members string RDS1,
Parallel resistance array RP2, resistance R14, R15, R16, R17, diode D5, D6, switching tube Q1 and chip U2；
The chip U2 is provided with compensation pin, return pins, energization pins, driving pin, the first controlling switch, the second control
Pin, the first detection pin and the second detection pin processed；The switching tube Q1 is provided with cold end, hot end and switch control
End；Positive pole incoming end of the one end of the clamp members string RDS1 as the leakproof electric control module；The clamp members string
RDS1 one end is connected with the rectification circuit；The other end of the clamp members string RDS1 connects with the negative electrode of the diode D5
Connect；The negative electrode of the diode D5 is connected with one end of the electric capacity C7；The negative electrode of the diode D5 also with the chip U2
Energization pins connection；The one end of the negative electrode of the diode D5 also with the electric capacity C9 is connected；The negative electrode of the diode D5
One end also with the resistance R15 is connected；The anode of the diode D5 is connected with one end of the resistance R16；Two pole
Return pins of the pipe D5 anode also with the chip U2 are connected；The anode of the diode D5 also with the resistance R14 one
End connection；The other end of the anode of the diode D5 also with the electric capacity C9 is connected；The other end of the C7 is as the electricity
The negative pole incoming end of source control module；The other end of the C7 is connected with the rectification circuit；The other end of the C7 also with institute
State parallel resistance array RP2 one end connection；Cold end of the other end of the C7 also with the switching tube Q1 is connected；It is described
The resistance R15 other end is connected with the negative electrode of the diode D6；The anode of the diode D6 and the first of the chip U2
Detect pin and the second detection pin connection；The other end of the anode of the diode D6 also with the parallel resistance array RP2
Connection；The one end of the anode of the diode D6 also with the electric capacity C8 is connected；The other end of the resistance R16 and the switch
Pipe Q1 high potential end connection；The other end of the resistance R14 is connected with the compensation pin of the chip U2；The resistance R14
The other end of the other end also with the electric capacity C8 be connected；One end of the resistance R17 and the switch of the switching tube Q1 control
End connection；The other end of the resistance R17 is connected with the driving pin of the chip U2；The first detection pin of the chip U2
As the electric leakage adjustment end of the leakproof electric control module, it is connected with the energy supply control module；The second inspection of the chip U2
Pin is surveyed to be connected with the first detection pin.
In one of the embodiments, the clamp members string RDS1 includes resistance string RS3 and diode D3, D4；It is described
Diode D3 anode is connected as one end of the clamp members string RDS1 with the rectification circuit；The moon of the diode D3
Pole is connected with one end of the resistance string RS3；The other end of the resistance R13 is connected with the negative electrode of the diode D4；It is described
The other end of the diode D4 anode as the clamp members string RDS1；The anode of the diode D4 and the diode D5
Negative electrode connection；
The switching tube Q1 is metal-oxide-semiconductor；Cold end, hot end and the switch control terminal of the switching tube Q1 be respectively
Source electrode, drain electrode and the grid of metal-oxide-semiconductor；The source electrode of the switching tube Q1 is connected with the other end of the electric capacity C7；The switching tube
Q1 drain electrode is connected with the other end of the resistance R16；The grid of the switching tube Q1 is connected with one end of the resistance R17.
In one of the embodiments, the input of the rectification circuit includes the first exchange connection end and the second exchange connects
Connect end；The output end of the rectification circuit includes direct-flow positive pole and direct current negative pole；The LED load module be provided with positive receiving terminal and
Negative receiving terminal；The input of the leakproof electric control module includes positive pole incoming end, negative pole incoming end；The leakproof electric control mould
The control terminal of block includes electric leakage adjustment end.
In one of the embodiments, the direct current of the anode connection terminal of the energy supply control module and the rectification circuit is being just
Pole connects；The positive supply side of the energy supply control module is connected with the positive receiving terminal of the LED load module；The power supply
The negative supply side of module is connected with the negative receiving terminal of the LED load module；The signal receiving end of the energy supply control module with
The electric leakage adjustment end connection of the leakproof electric control module；The positive pole incoming end of the leakproof electric control module and the rectified current
The direct-flow positive pole connection on road；The negative pole incoming end of the leakproof electric control module is connected with the direct current negative pole of the rectification circuit.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of controllable leakage current of the present utility model and the LED drive circuit of compatible ballast
Figure；
Fig. 2 is the input circuit of a kind of controllable leakage current of the present utility model and the LED drive circuit of compatible ballast
And the circuit diagram of rectification circuit；
Fig. 3 is the power supply of a kind of controllable leakage current of the present utility model and the LED drive circuit of compatible ballast
The circuit diagram of module, leakproof electric control module and LED load module.
Embodiment
For the ease of understanding the utility model, the utility model will be described more fully below.But this practicality
It is new to realize in many different forms, however it is not limited to embodiment described herein.On the contrary, provide these implementations
The purpose of example is to make the understanding more thorough and comprehensive to disclosure of the present utility model.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
Fig. 1 to Fig. 3 is referred to, the utility model proposes a kind of LED of controllable leakage current and compatible ballast driving electricity
Road, for carrying out electric energy conversion in LED lamp and producing light source, the output end of the light fixture and lamp socket connects, the lamp connected
Seat is internal can be provided with ballast, and the ballast installed inside the lamp socket can be that formula ballast can also be fast rises from wink
Formula ballast, programmatic method ballast or partial inductance formula ballast, light fixture are connected by the output end of metal pins and lamp socket, should
The output end of light fixture and lamp socket has several connected mode, can control the defeated of leakage current and the LED drive circuit of compatible ballast
Enter end to be connected with the metal pins of light fixture.The LED drive circuit of the controllable leakage current and compatible ballast includes connecting successively
Input circuit 10, rectification circuit 20, energy supply control module 30 and the LED load module 40 connect；The controllable leakage current and simultaneous
Hold the leakproof electric control that the LED drive circuit of ballast also includes connecting the rectification circuit 20 and the energy supply control module 30
Module 50；The input circuit 10 is used to connect metal pins in light fixture, and the metal pins are used to dock with the output end of lamp socket,
The overvoltage of the energy of the input circuit 10 absorbing external input；The rectification circuit 20 is used to carry out preliminary rectification；It is described anti-
Electric leakage control module 50 is used for the output end voltage situation according to the rectification circuit 20, controls the energy supply control module 30
Working condition.
The input circuit 10 is provided with some inputs；The input of the input circuit 10 and the metal in the light fixture
Pin connects, the connection corresponding with the metal pins of light fixture of the input of the input circuit 10, the light fixture by metal pins and
There is several power supply connected mode between the output end of lamp socket；In the present embodiment, the input bag of the input circuit 10
Include the first electric energy connection end, the second electric energy connection end, the 3rd electric energy connection end and the 4th electric energy connection end；The input circuit 10
Provided with some output ends；The output end of the input circuit 10 includes the first rectification connection end, the second rectification connection end, the 3rd whole
Flow connection end and the 4th rectification connection end；The first electric energy connection end, the second electric energy connection end are respectively used to electrically connect with city；
The input circuit 10 include buffering electric capacity CX1, CX2, CX3, discharge resistance string RX1, RX2, RX3, protective tube F1, F2, F3 and
Piezo-resistance VR1, VR2, VR3；The first electric energy connection end, the second electric energy connection end, the 3rd electric energy connection end and the 4th electricity
Can connection end can partially or completely through after protective tube respectively with the first rectification connection end, the second rectification connection end, the 3rd
Rectification connection end and the connection of the 4th rectification connection end；In the present embodiment, the first electric energy connection end, the second electric energy connection end
And the 3rd electric energy connection end pass through described protective tube F1, F2, F3 and the first rectification connection end, the second rectification connection end respectively
And the 3rd rectification connection end connection, the 4th electric energy connection end is directly connected with the 4th rectification connection end.
One end of the piezo-resistance VR1 connects the first rectification connection end of the input circuit 10, the piezo-resistance
The VR1 other end connects the second rectification connection end of the input circuit 10；One end connection of the piezo-resistance VR2 is described defeated
Enter the second rectification connection end of circuit 10, the other end of the piezo-resistance VR2 connects the 3rd rectification of the input circuit 10
Connection end；One end of the piezo-resistance VR3 connects the 3rd rectification connection end of the input circuit 10, the piezo-resistance
The VR3 other end connects the 4th rectification connection end of the input circuit 10.
One end of the buffering electric capacity CX1 connects the first rectification connection end of the input circuit 10, the buffering electric capacity
The CX1 other end connects the second rectification connection end of the input circuit 10；One end connection of the buffering electric capacity CX2 is described defeated
Enter the second rectification connection end of circuit 10, the other end of the buffering electric capacity CX2 connects the 3rd rectification of the input circuit 10
Connection end；One end of the buffering electric capacity CX3 connects the 3rd rectification connection end of the input circuit 10, the buffering electric capacity
The CX3 other end connects the 4th rectification connection end of the input circuit 10.
One end of the discharge resistance string RX1 connects the first rectification connection end of the input circuit 10, the electric discharge electricity
The resistance string RX1 other end connects the second rectification connection end of the input circuit 10；One end connection of the discharge resistance string RX2
Second rectification connection end of the input circuit 10, the other end of the discharge resistance string RX2 connect the input circuit 10
3rd rectification connection end；One end of the discharge resistance string RX3 connects the 3rd rectification connection end of the input circuit 10, described
The discharge resistance string RX3 other end connects the 4th rectification connection end of the input circuit 10；The electric discharge in the present embodiment
Resistance string RX1 includes discharge resistance RX4, RX5 of series connection；Discharge resistance RX6s of the discharge resistance string RX2 including series connection,
RX7；The discharge resistance string RX3 includes discharge resistance RX8, RX9 of series connection.
The input of the rectification circuit 20 includes the first exchange connection end, the second exchange connection end, the 3rd exchange connection
End and the 4th exchange connection end；The output end of the rectification circuit 20 includes direct-flow positive pole and direct current negative pole；The rectification circuit
20 include rectifier bridge BD1, BD2；First exchange of the two exchange ends of the rectifier bridge BD1 respectively as the rectification circuit 20
Connection end and the second exchange connection end；Two exchange ends of the rectifier bridge BD1 are whole with the first of the input circuit 10 respectively
Flow connection end and the connection of the second rectification connection end；Two exchange ends of the rectifier bridge BD2 are respectively as the rectification circuit 20
The 3rd exchange connection end and the 4th exchange connection end；Two of rectifier bridge BD2 exchange ends respectively with the input circuit
10 the 3rd rectification connection end and the connection of the 4th rectification connection end；The cathode output end of the rectifier bridge BD1 is as the rectification
The direct-flow positive pole of circuit 20；Direct current negative pole of the cathode output end of the rectifier bridge BD1 as the rectification circuit 20；It is described whole
The cathode output end for flowing bridge BD1 connects the cathode output end of the rectifier bridge BD2, and the cathode output end of the rectifier bridge BD2 connects
Connect the cathode output end of the rectifier bridge BD2.
The energy supply control module 30 is provided with anode connection terminal, signal receiving end, positive supply side and negative supply side；The electricity
Source control module 30 includes electric capacity C1, C2, C3, C4, C5, C6, resistance string RS1, RS2, parallel resistance array RP1, resistance R5,
R6, R7, R10, diode D1, D2, inductance L1, L2 and chip U1；The anode connection terminal of the energy supply control module 30 with it is described
The direct-flow positive pole connection of rectification circuit 20；Anode connection terminal of the one end of the electric capacity C1 as the energy supply control module 30；
One end of the electric capacity C1 is connected with the direct-flow positive pole of the rectification circuit 20；The negative electrode of the diode D1 and the electric capacity C1
One end connection；The one end of the negative electrode of the diode D1 also with the electric capacity C2 is connected；The negative electrode of the diode D1 also with
One end connection of the resistance string RS1；The one end of the negative electrode of the diode D1 also with the electric capacity C3 is connected；The diode
The one end of D1 negative electrode also with the electric capacity C6 is connected；The one end of the negative electrode of the diode D1 also with the resistance R10 is connected；
The anode of the diode D1 is connected with the other end of the electric capacity C1；The chip U1 draws floatingly provided with chip select pin, first
Pin, the second floating ground pin, energization pins, compensation pin, frequency adjustment pin and switched pins；The anode of the diode D1 is also
Ground pin is floated with the first of the chip U1, the second floating ground pin is connected；The other end of the resistance string RS1 and the chip U1
Energization pins connection；The other end of the electric capacity C2 is connected with one end of the resistance R5；The other end of the electric capacity C2 is also
It is connected with one end of the inductance L1；The one end of the other end of the electric capacity C2 also with the parallel resistance array RP1 is connected；Institute
The one end of the electric capacity C2 other end also with the resistance string RS2 is stated to be connected；The other end of the resistance R5 is as the power supply control
The signal receiving end of molding block 30；The other end of the resistance R5 is connected with the other end of the inductance L1；The resistance R5's
The other end is connected with the other end of the electric capacity C3；The other end of the parallel resistance array RP1 selects with the piece of the chip U1
Pin connects；The resistance string RS2 is provided with node；The switched pins of the node of the resistance string RS2 and the chip U1 connect
Connect；The inductance L2 is provided with the first butt end, the second butt end, the 3rd butt end and the 4th butt end；The of the inductance L2
One butt end is connected with one end of the resistance string RS2；The second butt end of the inductance L2 and the anode of the diode D2
Connection；The other end of the second butt end of the inductance L2 also with the resistance string RS2 is connected；The negative electrode of the diode D2 with
One end connection of the resistance R6；The other end of the resistance R6 is connected with the energization pins of the chip U1；The resistance R6
One end also with the electric capacity C4 of the other end be connected；The compensation pin of the other end of the electric capacity C4 and the chip U1 connects
Connect；The one end of the other end of the electric capacity C4 also with the electric capacity C5 is connected；The other end of the electric capacity C5 and the resistance R7
One end connection；The other end of the resistance R7 is connected with the frequency adjustment pin of the chip U1；One end of the resistance R10
Positive supply side as the energy supply control module 30；The other end of the resistance R10 is as the energy supply control module 30
Negative supply side；The other end of the resistance R10 is connected with the 3rd butt end of the inductance L2；The other end of the electric capacity C6 with
The 3rd butt end connection of the inductance L2；The 4th butt end of the inductance L2 and the first of the chip U1 the floating ground pin and
Second floating ground pin connection.
In wherein a kind of embodiment, the resistance string RS1 includes resistance R1, R2；One end of the resistance R1 and institute
State diode D1 negative electrode connection；The resistance R1 other end is connected with one end of the resistance R2；The other end of the resistance R2
It is connected with the energization pins of the chip U1.
In wherein a kind of embodiment, the parallel resistance array RP1 includes resistance R3, R4；The one of the resistance R3
End is connected with the other end of the electric capacity C2；One end of the resistance R4 is connected with one end of the resistance R3；The resistance R4
The other end be connected with the other end of the resistance R3；The first of the other end of the resistance R3 and the chip U1 is drawn floatingly
Pin, the second floating ground pin connection.
In wherein a kind of embodiment, the resistance string RS2 includes resistance R8, R9；One end of the resistance R8 and institute
State electric capacity C2 other end connection；The other end of the resistance R8 is connected with the switched pins of the chip U1；The resistance R8
One end also with the resistance R9 of the other end be connected；The other end of the resistance R9 is connected with the anode of the diode D2.
In wherein a kind of embodiment, to strengthen filter effect, the electric capacity C6 is electrochemical capacitor, the electric capacity C6's
Positive pole is connected with the negative electrode of the diode D1；The negative pole of the electric capacity C6 is connected with the 3rd butt end of the inductance L2.
The LED load module 40 is provided with positive receiving terminal and negative receiving terminal；The positive receiving terminal of the LED load module 40 with
The positive supply side connection of the energy supply control module 30；The negative receiving terminal of the LED load module 40 and the power supply mould
The negative supply side connection of block 30；Some LED modules are provided with the LED load module 40；The LED module is used to produce LED
Light.
The leakproof electric control module 50 is provided with some inputs and some control terminals；The leakproof electric control module 50
Input includes positive pole incoming end, negative pole incoming end；The control terminal of the leakproof electric control module 50 includes electric leakage adjustment end；Institute
The positive pole incoming end for stating leakproof electric control module 50 is connected with the direct-flow positive pole of the rectification circuit 20；The leakproof electric control mould
The negative pole incoming end of block 50 is connected with the direct current negative pole of the rectification circuit 20；The electric leakage adjustment of the leakproof electric control module 50
End is connected with the signal receiving end of the energy supply control module 30.The leakproof electric control module 50 includes electric capacity C7, C8, C9,
Clamp members string RDS1, parallel resistance array RP2, resistance R14, R15, R16, R17, diode D5, D6, switching tube Q1 and chip
U2；The chip U2 draws provided with compensation pin, return pins, energization pins, driving pin, the first controlling switch, the second control
Pin, the first detection pin and the second detection pin；The switching tube Q1 is provided with cold end, hot end and switch control terminal；
Positive pole incoming end of the one end of the clamp members string RDS1 as the leakproof electric control module 50；The clamp members string
RDS1 one end is connected with the direct-flow positive pole of the rectification circuit 20；The other end of the clamp members string RDS1 and two pole
Pipe D5 negative electrode connection；The negative electrode of the diode D5 is connected with one end of the electric capacity C7；The negative electrode of the diode D5 is also
It is connected with the energization pins of the chip U2；The one end of the negative electrode of the diode D5 also with the electric capacity C9 is connected；Described two
The one end of pole pipe D5 negative electrode also with the resistance R15 is connected；One end of the anode of the diode D5 and the resistance R16 connects
Connect；Return pins of the anode of the diode D5 also with the chip U2 are connected；The anode of the diode D5 also with it is described
Resistance R14 one end connection；The other end of the anode of the diode D5 also with the electric capacity C9 is connected；The other end of the C7
Negative pole incoming end as the energy supply control module 30；The direct current negative pole of the other end of the C7 and the rectification circuit 20 connects
Connect；The one end of the other end of the C7 also with the parallel resistance array RP2 is connected；The other end of the C7 also with the switch
Pipe Q1 cold end connection；The other end of the resistance R15 is connected with the negative electrode of the diode D6；The diode D6's
Anode detects pin with the first of the chip U2 and the second detection pin is connected；The anode of the diode D6 also with it is described simultaneously
Join electric resistance array RP2 other end connection；The one end of the anode of the diode D6 also with the electric capacity C8 is connected；The resistance
The R16 other end is connected with the high potential end of the switching tube Q1；The compensation of the other end of the resistance R14 and the chip U2
Pin connects；The other end of the other end of the resistance R14 also with the electric capacity C8 is connected；One end of the resistance R17 and institute
State switching tube Q1 switch control terminal connection；The other end of the resistance R17 is connected with the driving pin of the chip U2；It is described
Electric leakage adjustment end of chip U2 the first detection pin as the leakproof electric control module, the letter with the energy supply control module
The connection of number receiving terminal；The second detection pin of the chip U2 is connected with the first detection pin.
In wherein a kind of embodiment, the clamp members string RDS1 includes resistance string RS3 and diode D3, D4；Institute
Stating resistance string RS3 includes resistance R11, R12, R13；The one end of the anode of the diode D3 as the clamp members string RDS1
It is connected with the direct-flow positive pole of the rectification circuit；The negative electrode of the diode D3 is connected with one end of the resistance R11；The electricity
The resistance R11 other end is connected with one end of the resistance R12；One end of the other end of the resistance R12 and the resistance R13 connects
Connect；The other end of the resistance R13 is connected with the negative electrode of the diode D4；The anode of the diode D4 is as the clamper
The element string RDS1 other end；The anode of the diode D4 is connected with the negative electrode of the diode D5.
In wherein a kind of embodiment, the switching tube Q1 is metal-oxide-semiconductor；The cold end of the switching tube Q1, high electricity
Position end and switch control terminal are source electrode, drain electrode and grid respectively；The other end of the source electrode of the switching tube Q1 and the electric capacity C7
Connection；The drain electrode of the switching tube Q1 is connected with the other end of the resistance R16；The grid of the switching tube Q1 and the resistance
R17 one end connection.
In wherein a kind of embodiment, the parallel resistance array RP2 includes resistance R18, R19；The resistance R18's
One end is connected with the other end of the electric capacity C7；One end of the resistance R19 is connected with one end of the resistance R18；The electricity
The resistance R18 other end is connected with the anode of the diode D6；The other end of the resistance R19 is another with the resistance R18's
End connection.
In the utility model, by setting buffering electric capacity CX1, CX2, CX3 between each input of the input circuit 10,
Because electric capacity both end voltage can not be mutated, the LED drivings for making to connect with ballast in light fixture on startup will not be because by high pressure
Impact and be damaged inner member；Described discharge resistance string RX10, RX20, RX30 are used for when LED drive circuit is stopped
The buffering upper electricity of electric capacity CX1, CX2, CX3 is discharged, so that described buffering electric capacity CX1, CX2, CX3 voltage decline, to keep away
Exempt to produce injury to human body.
The input circuit 10 can by its first electric energy connection end, the second electric energy connection end, the 3rd electric energy connection end and
Any both realizations and the connection of civil power of the input of 4th electric energy connection end etc. four, to form loop；It is a kind of wherein to connect
Connect in mode, the first electric energy connection end of the input circuit 10 is connected with the live wire in civil power or zero line, second electric energy
Connection end, the 3rd electric energy connection end or the 4th electric energy connection end are connected with the zero line in civil power or live wire.In another connection side
In formula, the second electric energy connection end of the input circuit 10 is connected with the live wire in civil power or zero line, the first electric energy connection
End, the 3rd electric energy connection end or the 4th electric energy connection end are connected with the zero line in civil power or live wire.In another connected mode,
3rd electric energy connection end of the input circuit 10 is connected with the live wire in civil power or zero line, the first electric energy connection end,
Two electric energy connection ends or the 4th electric energy connection end are connected with the zero line in civil power or live wire.It is described in another connected mode
4th electric energy connection end of input circuit 10 is connected with the live wire in civil power or zero line, the first electric energy connection end, the second electricity
Energy connection end or the 3rd electric energy connection end are connected with the zero line in civil power or live wire.
The input circuit 10 can by its first electric energy connection end, the second electric energy connection end, the 3rd electric energy connection end and
Several the combination realization and the connection of ballast of the input of 4th electric energy connection end etc. four, to pass through two outputs of ballast
End obtains electric energy；It is a kind of wherein to can be achieved with playing formula, formula ballast, programmatic method ballast or partial inductance formula ballast from wink soon
In the connected mode of device connection, the first electric energy connection end and the connection of an output end of the second electric energy connection end and ballast,
The 3rd electric energy connection end and the connection of another output end of the 4th electric energy connection end and ballast；Wherein it is a kind of can be achieved with
In the connected mode that formula ballast connects from wink, the connection of an output end of the first electric energy connection end and ballast, described the
Another output end of two electric energy connection ends and ballast connects；It is a kind of wherein to can be achieved and formula ballast is connected from wink connection
In mode, the connection of an output end of the 3rd electric energy connection end and ballast, the 4th electric energy connection end and ballast
Another output end connection.
In various connected modes, the controllable leakage current and compatible ballast can be achieved in the input circuit 10
LED drive circuit is compatible with ballast, that is, is avoided that exterior overvoltage to the controllable leakage current and compatible ballast
LED drive circuit injures；In various connected modes, short circuit or overload protection can be achieved in the input circuit 10.
After LED drive circuit sets the input circuit 10, set the light fixture of the LED drive circuit is compatible town is installed
Flow the lamp socket of device；Set the light fixture of the LED drive circuit directly can also electrically connect with city；The rectification circuit 20 is used for by described in
The alternating current that input circuit 10 exports carries out preliminary rectification by its internal rectifier bridge BD1, BD2, and from direct-flow positive pole and directly
Flow negative pole output direct current.
The energy supply control module 30 obtains electric energy input from the rectification circuit 20；The energy supply control module 30 is institute
State LED load module 40 and voltage and the power supply of electric current stabilization are provided.
The chip U1 is internally integrated pwm switch pipe, in the controllable leakage current and the LED of compatible ballast
In the case that drive circuit is reliably connected with civil power, when the energy supply control module 30 starts, the chip U1 passes through resistance
The RS1 that goes here and there obtains electric energy, carries out start-up operation；After the energy supply control module 30 is completed to start, inductance L2's passes through described two
Pole pipe D2 and the resistance R6 provide power supply for the chip U1；The One function of the parallel resistance array RP1 is to be described
Chip U1 implements the detection by electric current to the LED load module 40；The switched pins of the chip U1 according to it is described simultaneously
Connection electric resistance array RP1 feedback voltage is adjusted to the electric current inside the energy supply control module 30, so that the power supply control
Voltage stabilization between the output end of molding block 30 and the LED load module is made to pass through stable electric current；When the parallel resistance
When the voltage of the array RP1 other end is declined to a certain extent, the chip U1 is internally integrated the conducting of pwm switch pipe；When
When the voltage of the other end of the parallel resistance array RP1 is risen to a certain extent, the chip U1 is internally integrated pulsewidth modulation
Switching tube turns off.
The leakproof electric control module 50 can detect the voltage change between the output end of the rectification circuit 20 and to described
The working condition of energy supply control module 30 is adjusted；When light fixture is normally connected with civil power, i.e., described input circuit 10 it is defeated
Enter end with civil power be reliably connected when, the energy supply control module 30 is adjusted to the output voltage of the rectification circuit 20, is made
The LED load module 40 passes through stable electric current.
Specifically, the chip U2 respectively by the clamp members string RDS1 and parallel resistance array RP2 respectively with institute
Direct-flow positive pole and the connection of direct current negative pole of rectification circuit are stated, to obtain the output voltage state of the rectification circuit；Light fixture with
When civil power normally connects, the driving pin of the chip U2 is applied by resistance R17 to the switch control terminal of the switching tube Q1
Voltage is laid particular stress on, the switching tube Q1 is turned on, to protect the chip U2, avoids the chip U2 breakdown.
When light fixture is not connected normally with civil power, i.e., described input circuit 10 only has part input and reliably connected with civil power
Connect, when input Wei Yu cities in addition electrically connect, the leakproof electric control module 50 recognizes the output of the rectification circuit 20
Voltage between end declines；Voltage between the leakproof electric control module 50 recognizes the output end of the rectification circuit 20 declines
Afterwards, the leakproof electric control module 50 by the signal receiving end of its leak electricity adjustment end and the energy supply control module 30 to described
Energy supply control module 30 transmits electric potential signal；After the energy supply control module 30 receives electric potential signal, the power supply
Module 30 stops being adjusted the output voltage of rectification circuit 20, and the LED load module 40 is declined by electric current；Institute
State energy supply control module 30 to stop after carrying out voltage adjustment, the internal driving between the input of the leakproof electric control module 50 will
Adjust, be in internally high impedance between the input of the leakproof electric control module 50.
Specifically, when light fixture is not connected normally with civil power, direct-flow positive pole and the direct current negative pole of the rectification circuit 20
Between voltage decline；The chip U2 detects that the voltage between the direct-flow positive pole and direct current negative pole of the rectification circuit 20 declines
Afterwards, the first controlling switch of the chip U2 and the second controlling switch output high level, make that the parallel resistance array RP1's is another
One terminal voltage rises, and the integrated pulse width modulation switching tube inside the chip U1 is because of the other end of the parallel resistance array RP1
The rising of voltage and be held off；Meanwhile detect that the direct-flow positive pole of the rectification circuit 20 is born with direct current in the chip U2
After the voltage of interpolar declines, the chip U2 makes the switching tube Q1 turn off by R17, makes the leakproof electric control module 50
Internal driving between the positive pole incoming end and the negative pole incoming end rises.
Between the input of the input circuit 10 inside it in high impedance, the input circuit 10 output end between at it
Inside be between high impedance, the rectification circuit input end inside it be between high impedance, the rectification circuit input end in it
Portion is in high impedance, therefore, when light fixture is not connected normally with civil power, is not present between the output end of the rectification circuit in outside
Low impedance path, when occurring leakage current in light fixture, pass through the controllable leakage current and the LED drive circuit of compatible ballast
Leakage current be controlled in below safety value, so as to ensure that human-body safety.
In the present embodiment, institute can be detected by being set in the LED drive circuit of controllable leakage current and compatible ballast
The leakproof electric control module of Output Voltage in Rectified Circuits is stated, the size of leakage current can be limited effectively caused by order, be existed for user
Installation provides protection when safeguarding LED lamp, avoids leakage current and injury of getting an electric shock is caused to user, meanwhile, by described in adjustment
The structure of input circuit, make the LED drive circuit can compatible ballast.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
- A kind of 1. LED drive circuit of controllable leakage current and compatible ballast, it is characterised in that including：What is be sequentially connected is defeated Enter circuit, rectification circuit, energy supply control module and LED load module；The LED of the controllable leakage current and compatible ballast Drive circuit also includes the leakproof electric control module for connecting the rectification circuit and the energy supply control module；The input circuit Provided with some inputs；The input circuit is provided with some output ends；The input of the input circuit connects including the first electric energy Connect end, the second electric energy connection end, the 3rd electric energy connection end and the 4th electric energy connection end；The output end of the input circuit includes the One rectification connection end, the second rectification connection end, the 3rd rectification connection end and the 4th rectification connection end；The input circuit includes slow Rush electric capacity CX1, CX2, CX3, discharge resistance string RX1, RX2, RX3, protective tube F1, F2, F3 and piezo-resistance VR1, VR2, VR3； The first electric energy connection end, the second electric energy connection end and the 3rd electric energy connection end respectively by described protective tube F1, F2, F3 with The first rectification connection end, the second rectification connection end and the connection of the 3rd rectification connection end, the 4th electric energy connection end are direct It is connected with the 4th rectification connection end；The energy supply control module be provided with anode connection terminal, signal receiving end, positive supply side and Negative supply side；The anode connection terminal of the energy supply control module is connected with the rectification circuit.
- 2. the LED drive circuit of controllable leakage current according to claim 1 and compatible ballast, it is characterised in that institute The one end for stating piezo-resistance VR1 connects the first rectification connection end of the input circuit, and the other end of the piezo-resistance VR1 connects Connect the second rectification connection end of the input circuit；The second of one end connection input circuit of the piezo-resistance VR2 is whole Connection end is flowed, the other end of the piezo-resistance VR2 connects the 3rd rectification connection end of the input circuit；The piezo-resistance VR3 one end connects the 3rd rectification connection end of the input circuit, and the other end of the piezo-resistance VR3 connects the input 4th rectification connection end of circuit；One end of the buffering electric capacity CX1 connects the first rectification connection end of the input circuit, and the buffering electric capacity CX1's is another One end connects the second rectification connection end of the input circuit；One end of the buffering electric capacity CX2 connects the input circuit Second rectification connection end, the other end of the buffering electric capacity CX2 connect the 3rd rectification connection end of the input circuit；It is described slow The one end for rushing electric capacity CX3 connects the 3rd rectification connection end of the input circuit 10, the other end connection of the buffering electric capacity CX3 4th rectification connection end of the input circuit；The first of one end connection input circuit of the discharge resistance string RX1 is whole Connection end is flowed, the other end of the discharge resistance string RX1 connects the second rectification connection end of the input circuit；The electric discharge electricity Resistance string RX2 one end connects the second rectification connection end of the input circuit, the other end connection institute of the discharge resistance string RX2 State the 3rd rectification connection end of input circuit；One end of the discharge resistance string RX3 connects the 3rd rectification of the input circuit Connection end, the other end of the discharge resistance string RX3 connect the 4th rectification connection end of the input circuit.
- 3. the LED drive circuit of controllable leakage current according to claim 1 and compatible ballast, it is characterised in that institute Stating energy supply control module includes electric capacity C1, C2, C3, C4, C5, C6, resistance string RS1, RS2, parallel resistance array RP1, resistance R5, R6, R7, R10, diode D1, D2, inductance L1, L2 and chip U1；The anode connection terminal of the energy supply control module is connected with the rectification circuit；One end of the electric capacity C1 is as the electricity The anode connection terminal of source control module；One end of the electric capacity C1 is connected with the rectification circuit；The negative electrode of the diode D1 It is connected with one end of the electric capacity C1；The one end of the negative electrode of the diode D1 also with the electric capacity C2 is connected；The diode The one end of D1 negative electrode also with the resistance string RS1 is connected；The negative electrode of the diode D1 also connects with one end of the electric capacity C3 Connect；The one end of the negative electrode of the diode D1 also with the electric capacity C6 is connected；The negative electrode of the diode D1 also with the resistance R10 one end connection；The anode of the diode D1 is connected with the other end of the electric capacity C1；The chip U1 is provided with piece choosing and drawn Pin, the first floating ground pin, the second floating ground pin, energization pins, compensation pin, frequency adjustment pin and switched pins；Described two Pole pipe D1 anode also floats ground pin with the first of the chip U1, the second floating ground pin is connected；The resistance string RS1's is another End is connected with the energization pins of the chip U1；The other end of the electric capacity C2 is connected with one end of the resistance R5；The electricity Hold the one end of the C2 other end also with the inductance L1 to be connected；The other end of the electric capacity C2 also with the parallel resistance array RP1 one end connection；The one end of the other end of the electric capacity C2 also with the resistance string RS2 is connected；The resistance R5's is another Hold the signal receiving end as the energy supply control module；The other end of the other end of the resistance R5 and the inductance L1 connects Connect；The other end of the resistance R5 is connected with the other end of the electric capacity C3；The other end of the parallel resistance array RP1 and institute State chip U1 chip select pin connection；The resistance string RS2 is provided with node；The node of the resistance string RS2 and the chip U1 switched pins connection；The inductance L2 is provided with the first butt end, the second butt end, the 3rd butt end and the 4th butt end； The first butt end of the inductance L2 is connected with one end of the resistance string RS2；The second butt end of the inductance L2 with it is described Diode D2 anode connection；The other end of the second butt end of the inductance L2 also with the resistance string RS2 is connected；Described two Pole pipe D2 negative electrode is connected with one end of the resistance R6；The energization pins of the other end of the resistance R6 and the chip U1 connect Connect；The one end of the other end of the resistance R6 also with the electric capacity C4 is connected；The other end of the electric capacity C4 and the chip U1 Compensation pin connection；The one end of the other end of the electric capacity C4 also with the electric capacity C5 is connected；The other end of the electric capacity C5 It is connected with one end of the resistance R7；The other end of the resistance R7 is connected with the frequency adjustment pin of the chip U1；It is described Positive supply side of the resistance R10 one end as the energy supply control module；The other end of the resistance R10 is as the power supply control The negative supply side of molding block；The other end of the resistance R10 is connected with the 3rd butt end of the inductance L2；The electric capacity C6's The other end is connected with the 3rd butt end of the inductance L2；The 4th butt end of the inductance L2 is floating with the first of the chip U1 Ground pin and the second floating ground pin connection.
- 4. the LED drive circuit of controllable leakage current according to claim 3 and compatible ballast, it is characterised in that institute Stating resistance string RS1, RS2 includes the resistance of some series connection；The parallel resistance array RP1 includes some resistance parallel with one another； The electric capacity C6 is electrochemical capacitor, and the positive pole of the electric capacity C6 is connected with the negative electrode of the diode D1；The electric capacity C6's is negative Pole is connected with the 3rd butt end of the inductance L2.
- 5. the LED drive circuit of controllable leakage current according to claim 1 and compatible ballast, it is characterised in that institute State leakproof electric control module and be provided with some inputs and some control terminals.
- 6. the LED drive circuit of controllable leakage current according to claim 5 and compatible ballast, it is characterised in that institute Stating the input of leakproof electric control module includes positive pole incoming end, negative pole incoming end；The control terminal of the leakproof electric control module Including adjustment end of leaking electricity.
- 7. the LED drive circuit of controllable leakage current according to claim 6 and compatible ballast, it is characterised in that institute Stating leakproof electric control module includes electric capacity C7, C8, C9, clamp members string RDS1, parallel resistance array RP2, resistance R14, R15, R16, R17, diode D5, D6, switching tube Q1 and chip U2；The chip U2 draws provided with compensation pin, return pins, energization pins, driving pin, the first controlling switch, the second control Pin, the first detection pin and the second detection pin；The switching tube Q1 is provided with cold end, hot end and switch control terminal； Positive pole incoming end of the one end of the clamp members string RDS1 as the leakproof electric control module；The clamp members string RDS1 One end be connected with the rectification circuit；The other end of the clamp members string RDS1 is connected with the negative electrode of the diode D5； The negative electrode of the diode D5 is connected with one end of the electric capacity C7；Confession of the negative electrode of the diode D5 also with the chip U2 Electric pin connection；The one end of the negative electrode of the diode D5 also with the electric capacity C9 is connected；The negative electrode of the diode D5 also with One end connection of the resistance R15；The anode of the diode D5 is connected with one end of the resistance R16；The diode D5 Return pins of the anode also with the chip U2 be connected；The anode of the diode D5 also connects with one end of the resistance R14 Connect；The other end of the anode of the diode D5 also with the electric capacity C9 is connected；The other end of the C7 is as the power supply control The negative pole incoming end of molding block；The other end of the C7 is connected with the rectification circuit；The other end of the C7 also with it is described simultaneously Join electric resistance array RP2 one end connection；Cold end of the other end of the C7 also with the switching tube Q1 is connected；The resistance The R15 other end is connected with the negative electrode of the diode D6；First detection of the anode of the diode D6 and the chip U2 Pin and the second detection pin connection；The other end of the anode of the diode D6 also with the parallel resistance array RP2 is connected； The one end of the anode of the diode D6 also with the electric capacity C8 is connected；The other end of the resistance R16 and the switching tube Q1 High potential end connection；The other end of the resistance R14 is connected with the compensation pin of the chip U2；The resistance R14's is another The other end of the one end also with the electric capacity C8 is connected；One end of the resistance R17 and the switch control terminal of the switching tube Q1 connect Connect；The other end of the resistance R17 is connected with the driving pin of the chip U2；The first detection pin conduct of the chip U2 The electric leakage adjustment end of the leakproof electric control module, is connected with the energy supply control module；The second detection of the chip U2 is drawn Pin is connected with the first detection pin.
- 8. the LED drive circuit of controllable leakage current according to claim 7 and compatible ballast, it is characterised in that institute Stating clamp members string RDS1 includes resistance string RS3 and diode D3, D4；The anode of the diode D3 is as the clamp members String RDS1 one end is connected with the rectification circuit；The negative electrode of the diode D3 is connected with one end of the resistance string RS3；Institute The other end for stating resistance R13 is connected with the negative electrode of the diode D4；The anode of the diode D4 is as the clamp members The string RDS1 other end；The anode of the diode D4 is connected with the negative electrode of the diode D5；The switching tube Q1 is metal-oxide-semiconductor；Cold end, hot end and the switch control terminal of the switching tube Q1 is MOS respectively Source electrode, drain electrode and the grid of pipe；The source electrode of the switching tube Q1 is connected with the other end of the electric capacity C7；The switching tube Q1's Drain electrode is connected with the other end of the resistance R16；The grid of the switching tube Q1 is connected with one end of the resistance R17.
- 9. the LED drive circuit of controllable leakage current according to claim 2 and compatible ballast, it is characterised in that institute Stating the input of rectification circuit includes the first exchange connection end and the second exchange connection end；The output end of the rectification circuit includes Direct-flow positive pole and direct current negative pole；The LED load module is provided with positive receiving terminal and negative receiving terminal；The leakproof electric control module Input includes positive pole incoming end, negative pole incoming end；The control terminal of the leakproof electric control module includes electric leakage adjustment end.
- 10. the LED drive circuit of controllable leakage current according to claim 9 and compatible ballast, it is characterised in that institute The anode connection terminal for stating energy supply control module is connected with the direct-flow positive pole of the rectification circuit；The positive confession of the energy supply control module It is connected to end with the positive receiving terminal of the LED load module；The negative supply side of the energy supply control module and the LED load mould The negative receiving terminal connection of block；The electric leakage adjustment end of the signal receiving end of the energy supply control module and the leakproof electric control module Connection；The positive pole incoming end of the leakproof electric control module is connected with the direct-flow positive pole of the rectification circuit；The leakproof is automatically controlled The negative pole incoming end of molding block is connected with the direct current negative pole of the rectification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720291832.2U CN206948655U (en) | 2017-03-23 | 2017-03-23 | The LED drive circuit of controllable leakage current and compatible ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720291832.2U CN206948655U (en) | 2017-03-23 | 2017-03-23 | The LED drive circuit of controllable leakage current and compatible ballast |
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| Publication Number | Publication Date |
|---|---|
| CN206948655U true CN206948655U (en) | 2018-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720291832.2U Withdrawn - After Issue CN206948655U (en) | 2017-03-23 | 2017-03-23 | The LED drive circuit of controllable leakage current and compatible ballast |
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| Country | Link |
|---|---|
| CN (1) | CN206948655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106937444A (en) * | 2017-03-23 | 2017-07-07 | 曾军 | The LED drive circuit of controllable leakage current and compatible ballast |
-
2017
- 2017-03-23 CN CN201720291832.2U patent/CN206948655U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106937444A (en) * | 2017-03-23 | 2017-07-07 | 曾军 | The LED drive circuit of controllable leakage current and compatible ballast |
| CN106937444B (en) * | 2017-03-23 | 2018-09-28 | 东莞泛美光电有限公司 | The LED drive circuit of controllable leakage current and compatible ballast |
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