CN205793527U - A kind of compatible civil power and the LED daylight lamp tube drive circuit of electric ballast - Google Patents
A kind of compatible civil power and the LED daylight lamp tube drive circuit of electric ballast Download PDFInfo
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- CN205793527U CN205793527U CN201620562571.9U CN201620562571U CN205793527U CN 205793527 U CN205793527 U CN 205793527U CN 201620562571 U CN201620562571 U CN 201620562571U CN 205793527 U CN205793527 U CN 205793527U
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Abstract
This utility model relates to a kind of compatible civil power and the LED daylight lamp tube drive circuit of electric ballast, one end of LED fluorescent lamp tube is located at by this drive circuit, and be connected with conducting terminal L, N of LED fluorescent lamp tube one end and conducting terminal X1, X2 of the other end respectively, including the rectification unit being sequentially connected with, filter unit, anti-high voltage unit, constant current unit, output unit, LED load and safe unit；Described safe unit is used for preventing LED fluorescent lamp tube reversal connection and electric shock；Described anti-high voltage unit includes varistor RV1, and anti-high voltage unit is for absorbing the instantaneous pressure of electric ballast output.This utility model is simultaneously suitable for civil power and electric ballast work, is single-ended transmission of electricity, when using electric ballast work, transmits electricity for both-end, have safety and prevent the function of misconnection electricity when using civil power work, and circuit structure is simple, practical.
Description
Technical field
This utility model relates to a kind of LED daylight lamp tube drive circuit, particularly a kind of compatible civil power and electric ballast
LED daylight lamp tube drive circuit.
Background technology
Traditional fluorescent tube industrial and civilian on be widely used in a variety of applications, along with rapidly sending out of LED technology
Exhibition and the reduction of cost, LED gradually instead of traditional fluorescent tube because of advantages such as its energy-conserving and environment-protective in recent years.But it is traditional
Fluorescent tube need supporting ballast use, and LED fluorescent lamp tube without, the most original fluorescent tube circuit is not
Driving LED fluorescent lamp tube work can be directly used in, need original circuit is transformed.Circuit is transformed the skill needing specialty
Art personnel can realize, and makes troubles to the replacement of ordinary people lighting.Furthermore, LED fluorescent lamp tube can directly use
Industry civil power work, and ballast output is high frequency electric, and produce instantaneous pressure, so changing even across circuit simultaneously
LED fluorescent lamp tube after making is not suitable for industry civil power work yet.
For these reasons, it is necessary to solve the problems referred to above by transforming the drive circuit of existing LED fluorescent lamp tube.?
In existing technical scheme, the LED fluorescent lamp tube of compatible civil power and ballast often uses city's electric drive and ballast driven two
The drive pattern that bar circuit separates, high frequency electric input increases high-frequency and high-voltage often on the basis of city's electric drive circuit and absorbs
Circuit, frequency detection circuit and high-frequency induction circuit etc., circuit structure is complicated.
Utility model content
In view of the foregoing, the purpose of this utility model is to provide a kind of compatible civil power and the LED daylight of electric ballast
Lamp tube drive circuit, circuit structure is simple and practical, has safety and prevents the function of misconnection electricity.
To achieve these goals, the technical scheme that this utility model is used is:
A kind of compatible civil power and the LED daylight lamp tube drive circuit of electric ballast, LED daylight lamp is located at by this drive circuit
One end of pipe, and be connected with conducting terminal L, N of LED fluorescent lamp tube one end and conducting terminal X1, X2 of the other end respectively, drive
Rectification unit that galvanic electricity road includes being sequentially connected with, filter unit, anti-high voltage unit, constant current unit, output unit, LED load and
Safe unit；Described safe unit includes pressure limiting false electric capacity C2 and limit low-frequency current electric capacity C4, pressure limiting false electric capacity C2 one end
Being connected with conducting terminal N, the other end is connected with conducting terminal X1 and X2, limit low-frequency current electric capacity C4 one end and conducting terminal X1 and
X2 is connected, and the other end is connected with rectification unit, and safe unit is used for preventing LED fluorescent lamp tube reversal connection and electric shock；Described anti-high pressure
Unit includes varistor RV1, varistor RV1 one end ground connection, and the other end connects the outfan of filter unit, anti-high voltage unit
For absorbing the instantaneous pressure of electric ballast output.
Further setting as such scheme:
Described rectification unit includes three groups of half-wave rectifier bridges, and often group is made up of two Ultrafast recovery commutation diodes, conduction
Terminal L and conducting terminal N respectively connects one group of half-wave rectifier bridge, these two groups of half-wave rectifier bridge one full-wave rectification bridges of composition；Conduction
Terminal X1 and X2 connects another set half-wave rectifier bridge, and the half-wave rectifier bridge that conducting terminal X1 and X2 connects is with conducting terminal L even
The half-wave rectifier bridge connect or the half-wave rectifier bridge being connected with conducting terminal N separately constitute a full-wave rectification bridge.
Described filter unit includes the π type filter circuit being made up of inductance L2, resistance R12, electric capacity C0 and electric capacity C1.
Described constant current unit includes that control chip U1 and metal-oxide-semiconductor Q1, control chip U1 have six pins, and pin 1 is power supply
Terminal connects the outfan of filter unit, and pin 2 is directly grounded for ground terminal, and pin 3 is connected with the grid of metal-oxide-semiconductor Q1, draws
Foot 4 leads up to resistance R6 ground connection, separately leads up to resistance R5, commutation diode D1, resistance R7 and the filtered electrical being sequentially connected with
Holding C3 ground connection, pin 5 is by electric capacity C9 ground connection, and pin 6 is connected with the outfan of output unit；The drain electrode of metal-oxide-semiconductor Q1 and filtering
The outfan of unit connects, the source ground of metal-oxide-semiconductor Q1.
The outfan of described filter unit is sequentially connected in series pin 1 phase after resistance R0, R1 and R2 with control chip U1
Even.
The model of described control chip U1 is SD6900.
The model of described metal-oxide-semiconductor Q1 is SVF4N60D.
Described output unit includes inductance L3, sustained diode 2, filter capacitor C8, resistance RS1 and resistance RS2, resistance
RS1 and resistance RS2 is in parallel, and its input connects the cathode terminal of sustained diode 2, and the anode terminal of sustained diode 2 connects
Ground；The outfan of resistance RS1 and resistance RS2 connects the input of inductance L3, and the outfan of inductance L3 passes through resistance R9 ground connection, electricity
R9 is in parallel with filter capacitor C8 in resistance.
The front end of described rectification unit is provided with insurance resistance F1, safety electric capacity CX1 and bleeder resistance RX1, insures resistance F1
One end is connected with conducting terminal L, and the other end is connected with half-wave rectifier bridge input, and safety electric capacity CX1 and bleeder resistance RX1 is also
Connection, is connected across between conducting terminal L and conducting terminal N.
The LED daylight lamp tube drive circuit that this utility model provides, is simultaneously suitable for civil power and electric ballast work, makes
It is single-ended transmission of electricity when working with civil power, when using electric ballast work, transmits electricity for both-end there is safety and prevent misconnection electricity
Function, circuit structure is simple, practical.
Below by way of the drawings and specific embodiments, this utility model is further elaborated.
Accompanying drawing illustrates:
Fig. 1 is this utility model theory structure block diagram；
Fig. 2 is this utility model LED fluorescent lamp tube structural representation；
Fig. 3 is the circuit diagram of this utility model drive circuit.
Detailed description of the invention:
As depicted in figs. 1 and 2, this utility model provides a kind of compatible civil power and the LED fluorescent lamp tube of electric ballast
Drive circuit, this drive circuit is located at one end of LED fluorescent lamp tube, and respectively with conducting terminal L, N of LED fluorescent lamp tube one end
And conducting terminal X1, X2 of the other end is connected, rectification unit that this drive circuit includes being sequentially connected with, filter unit, anti-height
Pressure unit, constant current unit, output unit, LED load and safe unit.
The front end of rectification unit is provided with insurance resistance F1, safety electric capacity CX1 and bleeder resistance RX1, insures resistance F1 one end
Being connected with conducting terminal L, the other end is connected with the input of rectification unit, and safety electric capacity CX1 and bleeder resistance RX1 is in parallel, across
It is connected between conducting terminal L and conducting terminal N.Foregoing circuit structure designs, it is therefore an objective to prevented stream and in order to filter exchange
The interference of middle differential mode voltage.
Rectification unit includes three groups of half-wave rectifier bridges, the wherein D4 being made up of six Ultrafast recovery commutation diode D4 to D9
The half-wave rectifier bridge constituted with D5 is connected with conducting terminal L, and the half-wave rectifier bridge that D6 and D7 is constituted is connected with conducting terminal N, D8
The half-wave rectifier bridge constituted with D9 is connected with conducting terminal X1 and X2.
Filter unit includes the π type filter circuit being made up of inductance L2, resistance R12, electric capacity C0 and electric capacity C1, to rectification list
The unidirectional current of unit's output is filtered processing.
Anti-high voltage unit includes varistor RV1, varistor RV1 one end ground connection, and the other end connects the defeated of filter unit
Going out end, anti-high voltage unit, for absorbing the instantaneous pressure (reaching 1000V) of electric ballast output, reaches to protect device in back-end circuit
The purpose of part.
Constant current unit includes the control chip U1 that model is SD6900 and the metal-oxide-semiconductor Q1 that model is SVF4N60D, controls core
Sheet U1 has six pins, and wherein, pin 1 connects the outfan of filter unit for power supply terminal, and pin 2 directly connects for ground terminal
Ground, pin 3 is connected with the grid of metal-oxide-semiconductor Q1, and pin 4 leads up to resistance R6 ground connection, separately leads up to the resistance being sequentially connected with
R5, commutation diode D1, resistance R7 and filter capacitor C3 ground connection, pin 5 is by electric capacity C9 ground connection, pin 6 and output unit
Outfan connects；The drain electrode of metal-oxide-semiconductor Q1 is connected with the outfan of filter unit, the source ground of metal-oxide-semiconductor Q1.Unit after filtering
Filtered DC voltage provides for control chip U1 after resistance R0, R1 and R2 blood pressure lowering and starts voltage, then by inductance L3
Dividing potential drop also provides maintenance voltage by commutation diode D1, resistance R7 and filter capacitor C3；By resistance R5 and R6 for controlling core
Sheet U1 provides detection voltage, and the electric current of LED load provides detection electric current by resistance Rs1, Rs2 for control chip U1；Control core
Sheet U1 provides cut-in voltage to control the on an off of metal-oxide-semiconductor Q1, for defeated by pin 3 for metal-oxide-semiconductor Q1 according to detection electric current and voltage
Go out unit and constant current is provided；The pin 5 of control chip U1, for compensating terminal, can reduce the switching speed of metal-oxide-semiconductor Q1, improves
The power factor of whole circuit.
Output unit includes inductance L3, sustained diode 2, filter capacitor C8, resistance RS1 and resistance RS2, resistance RS1 and
Resistance RS2 is in parallel, and its input connects the cathode terminal of sustained diode 2, the anode terminal ground connection of sustained diode 2；Electricity
The outfan of resistance RS1 and resistance RS2 connects the input of inductance L3, and the outfan of inductance L3 passes through resistance R9 ground connection, resistance R9
In parallel with filter capacitor C8.The constant current that constant current unit is exported by output unit is supplied to LED to bear after carrying out rectification and filtering
Carry.
LED load be multiple LED lamp bead series connection or connection in series-parallel together.
Safe unit includes pressure limiting false electric capacity C2 and limit low-frequency current electric capacity C4, pressure limiting false electric capacity C2 one end and conduction
Terminal N is connected, and the other end is connected with conducting terminal X1 and X2, limit low-frequency current electric capacity C4 one end and conducting terminal X1 and X2 phase
Even, the other end is connected with rectification unit, and safe unit is used for preventing LED fluorescent lamp tube reversal connection and electric shock；The wherein false electricity of pressure limiting
Holding C2 is that the other end is the most charged in order to prevent LED fluorescent lamp tube one end to be energized, thus the risk got an electric shock occurs；And limit low-frequency electrical
Stream electric capacity C4 is in order to when preventing LED fluorescent lamp tube reversal connection, low frequency civil power passes through.
The operation principle of the whole drive circuit of this utility model is as follows: when connecting civil power, single-ended transmission of electricity, and input is conduction
Terminal L and N, due to the existence of pressure limiting false electric capacity C2, the other end is in safe voltage scope, if reversal connection conducting terminal X1 and
X2, owing to there is low frequency current limiting capacitance C4, then civil power cannot input, and fluorescent tube does not works；Safety electricity is had between conducting terminal X1 and X2
Hold Cx, be possible to prevent short circuit；Civil power, after insurance resistance F1, differential mode filter capacitor Cx1 and pressure release resistance Rx1, enters D4-D7
The full-wave rectification bridge output DC current of composition, exports clean unidirectional current entrance output single after p-type filter circuit filters
Unit and constant current unit, electric current and the voltage of output unit are detected by the control chip U1 of constant current unit, control metal-oxide-semiconductor Q1's
Switch makes output unit output constant current luminous to LED load.(tradition is directly replaced glimmering when connecting circuit of electronic ballast
Light lamp tube), both-end is transmitted electricity, conducting terminal L and the same current potential of N terminal, the same current potential of conducting terminal X1 and X2, and electricity inputs from separately from one end
One end exports, and other are identical with the operation principle using civil power work, not repeated description, and simply the most anti-high voltage unit plays
Pivotal role, absorbs the instantaneous pressure of electric ballast output by varistor RV1, reaches to protect the mesh of back-end circuit device
's.
Above example only in order to the technical solution of the utility model to be described and unrestricted, those of ordinary skill in the art couple
Other amendment or equivalents that the technical solution of the utility model is made, without departing from technical solutions of the utility model
Spirit and scope, all should contain in right of the present utility model.
Claims (9)
1. a compatible civil power and the LED daylight lamp tube drive circuit of electric ballast, it is characterised in that: this drive circuit is located at
One end of LED fluorescent lamp tube, and respectively with conducting terminal L, N of LED fluorescent lamp tube one end and the conducting terminal X1 of the other end,
X2 is connected, rectification unit that drive circuit includes being sequentially connected with, filter unit, anti-high voltage unit, constant current unit, output unit,
LED load and safe unit；Described safe unit includes pressure limiting false electric capacity C2 and limit low-frequency current electric capacity C4, the false electricity of pressure limiting
Holding C2 one end to be connected with conducting terminal N, the other end is connected with conducting terminal X1 and X2, limit low-frequency current electric capacity C4 one end and conduction
Terminal X1 with X2 is connected, and the other end is connected with rectification unit, and safe unit is used for preventing LED fluorescent lamp tube reversal connection and electric shock；Institute
Stating anti-high voltage unit and include varistor RV1, varistor RV1 one end ground connection, the other end connects the outfan of filter unit, anti-
High voltage unit is for absorbing the instantaneous pressure of electric ballast output.
A kind of compatible civil power the most according to claim 1 and the LED daylight lamp tube drive circuit of electric ballast, its feature
It is: described rectification unit includes three groups of half-wave rectifier bridges, and often group is made up of two Ultrafast recovery commutation diodes, conducting terminal
L and conducting terminal N respectively connects one group of half-wave rectifier bridge, these two groups of half-wave rectifier bridge one full-wave rectification bridges of composition；Conducting terminal
X1 and X2 connects another set half-wave rectifier bridge, and the half-wave rectifier bridge that conducting terminal X1 and X2 connects is connected with conducting terminal L
Half-wave rectifier bridge or the half-wave rectifier bridge being connected with conducting terminal N separately constitute a full-wave rectification bridge.
A kind of compatible civil power the most according to claim 1 and the LED daylight lamp tube drive circuit of electric ballast, its feature
It is: described filter unit includes the π type filter circuit being made up of inductance L2, resistance R12, electric capacity C0 and electric capacity C1.
A kind of compatible civil power the most according to claim 1 and the LED daylight lamp tube drive circuit of electric ballast, its feature
It is: described constant current unit includes that control chip U1 and metal-oxide-semiconductor Q1, control chip U1 have six pins, pin 1 to be power supply terminal
Connecting the outfan of filter unit, pin 2 is directly grounded for ground terminal, and pin 3 is connected with the grid of metal-oxide-semiconductor Q1, pin 4 one
Resistance R6 ground connection is passed through on road, and resistance R5, commutation diode D1, resistance R7 and the filter capacitor C3 being sequentially connected with of separately leading up to connects
Ground, pin 5 is by electric capacity C9 ground connection, and pin 6 is connected with the outfan of output unit；The drain electrode of metal-oxide-semiconductor Q1 and filter unit
Outfan connects, the source ground of metal-oxide-semiconductor Q1.
A kind of compatible civil power the most according to claim 4 and the LED daylight lamp tube drive circuit of electric ballast, its feature
It is: the outfan of described filter unit is sequentially connected in series resistance R0, R1 and is connected with pin 1 with control chip U1 after R2.
A kind of compatible civil power the most according to claim 4 and the LED daylight lamp tube drive circuit of electric ballast, its feature
It is: the model of described control chip U1 is SD6900.
A kind of compatible civil power the most according to claim 4 and the LED daylight lamp tube drive circuit of electric ballast, its feature
It is: the model of described metal-oxide-semiconductor Q1 is SVF4N60D.
A kind of compatible civil power the most according to claim 1 and the LED daylight lamp tube drive circuit of electric ballast, its feature
It is: described output unit includes inductance L3, sustained diode 2, filter capacitor C8, resistance RS1 and resistance RS2, resistance RS1
In parallel with resistance RS2, its input connects the cathode terminal of sustained diode 2, the anode terminal ground connection of sustained diode 2；
The outfan of resistance RS1 and resistance RS2 connects the input of inductance L3, and the outfan of inductance L3 passes through resistance R9 ground connection, resistance
R9 is in parallel with filter capacitor C8.
A kind of compatible civil power the most according to claim 1 and the LED daylight lamp tube drive circuit of electric ballast, its feature
It is: the front end of described rectification unit is provided with insurance resistance F1, safety electric capacity CX1 and bleeder resistance RX1, insures resistance F1 one end
Being connected with conducting terminal L, the other end is connected with half-wave rectifier bridge input, and safety electric capacity CX1 and bleeder resistance RX1 is in parallel, across
It is connected between conducting terminal L and conducting terminal N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620562571.9U CN205793527U (en) | 2016-06-12 | 2016-06-12 | A kind of compatible civil power and the LED daylight lamp tube drive circuit of electric ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620562571.9U CN205793527U (en) | 2016-06-12 | 2016-06-12 | A kind of compatible civil power and the LED daylight lamp tube drive circuit of electric ballast |
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| Publication Number | Publication Date |
|---|---|
| CN205793527U true CN205793527U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620562571.9U Expired - Fee Related CN205793527U (en) | 2016-06-12 | 2016-06-12 | A kind of compatible civil power and the LED daylight lamp tube drive circuit of electric ballast |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110557868A (en) * | 2019-09-19 | 2019-12-10 | 横店集团得邦照明股份有限公司 | lamp tube compatible with high frequency and power frequency and implementation method thereof |
| CN111542147A (en) * | 2020-06-01 | 2020-08-14 | 厦门普为光电科技有限公司 | Lamp tube with electric shock protection and compatible electronic ballast and power frequency AC power supply |
| WO2021088114A1 (en) * | 2019-11-04 | 2021-05-14 | 佛山电器照明股份有限公司 | T-shaped tube-based led drive circuit |
| CN116505765A (en) * | 2023-06-25 | 2023-07-28 | 中国工程物理研究院应用电子学研究所 | Constant current circuit of BUCK power supply |
-
2016
- 2016-06-12 CN CN201620562571.9U patent/CN205793527U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110557868A (en) * | 2019-09-19 | 2019-12-10 | 横店集团得邦照明股份有限公司 | lamp tube compatible with high frequency and power frequency and implementation method thereof |
| CN110557868B (en) * | 2019-09-19 | 2024-04-05 | 横店集团得邦照明股份有限公司 | Lamp tube compatible with high frequency and power frequency and implementation method thereof |
| WO2021088114A1 (en) * | 2019-11-04 | 2021-05-14 | 佛山电器照明股份有限公司 | T-shaped tube-based led drive circuit |
| CN111542147A (en) * | 2020-06-01 | 2020-08-14 | 厦门普为光电科技有限公司 | Lamp tube with electric shock protection and compatible electronic ballast and power frequency AC power supply |
| CN116505765A (en) * | 2023-06-25 | 2023-07-28 | 中国工程物理研究院应用电子学研究所 | Constant current circuit of BUCK power supply |
| CN116505765B (en) * | 2023-06-25 | 2023-09-22 | 中国工程物理研究院应用电子学研究所 | Constant current circuit of BUCK power supply |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |