CN206024164U - A kind of LED linear drive system - Google Patents
A kind of LED linear drive system Download PDFInfo
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- CN206024164U CN206024164U CN201620859788.6U CN201620859788U CN206024164U CN 206024164 U CN206024164 U CN 206024164U CN 201620859788 U CN201620859788 U CN 201620859788U CN 206024164 U CN206024164 U CN 206024164U
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Abstract
The utility model discloses a kind of LED linear drive system, including chip U1, bidirectional thyristor Q2, rectifier bridge BD1 and resistance R9, one voltage input end connection resistance VD1 and 220V alternating current of the rectifier bridge BD1, the other end and the other end of 220V alternating currents of another voltage input end connection resistance VD1 of rectifier bridge BD1, the voltage output end connection resistance R1 of rectifier bridge BD1, the anode of resistance R2 and diode D1.Circuit of the utility model LED linear drive system using Linear Driving, in the case of input voltage is higher than standard input voltage, such as standard AC220V 50W, in AC210V 240V, by adjusting load current, it is ensured that power output is substantially constant at 50W or so and average current harmonic wave is less than 5%.
Description
Technical field
The utility model is related to LED linear and drives low current harmonic wave and invariable power complex art, specifically a kind of LED linear
Drive system.
Background technology
LED linear drives low current harmonic wave and invariable power complex art,（I.e. using the circuit of Linear Driving, in input electricity
In the case of pressure is higher than standard input voltage, such as standard AC220V-50W, in AC210V-240V, by adjusting load current,
Ensure that power output is substantially constant at 50W or so and average current harmonic wave is less than 5%.
In view of in current Linear Driving industry, wanting to power stability sum-average arithmetic current harmonics to require, and meeting various countries
Authentication requesting, special utility model this patent.
Content of the invention
The purpose of this utility model is to provide a kind of LED linear drive system, to solve to propose in above-mentioned background technology
Problem.
For achieving the above object, the utility model provides following technical scheme：
A kind of LED linear drive system, including chip U1, bidirectional thyristor Q2, rectifier bridge BD1 and resistance R9, described whole
One voltage input end connection resistance VD1 and 220V alternating current of stream bridge BD1, another voltage input end of rectifier bridge BD1 connect
The other end of connecting resistance VD1 and the other end of 220V alternating currents, the voltage output end connection resistance R1 of rectifier bridge BD1, resistance R2
With the anode of diode D1, the other end connection resistance R3 of resistance R1, the other end connection resistance R4 of resistance R2, resistance R4's is another
The pin 3 of one end connection electric capacity C3, resistance R5, the negative electrode of diode D4 and chip U1, the other end connection metal-oxide-semiconductor Q1 of resistance R5
Drain electrode, the other end connection earth terminal of rectifier bridge BD1 of electric capacity C3, the drain electrode of metal-oxide-semiconductor Q1, electric capacity C3, resistance R8, two-way crystalline substance
One main electrode of brake tube Q2, resistance R10, resistance R11, resistance R12 and electric capacity C2, the grid connection electric capacity C4's of metal-oxide-semiconductor Q1
The other end, the other end of resistance R8, resistance R6 and resistance R7, the other end connection electric capacity C1's and metal-oxide-semiconductor Q2 of resistance R7 are another
Individual main electrode, the other end of the other end connection electric capacity C2 of electric capacity C1, the other end of resistance R3, resistance R8 and bidirectional thyristor Q1
Control pole, the other end connection other end of resistance R10 of resistance R9, the other end of resistance R11, the other end of resistance R12, two
The pin 1 of the anode of pole pipe D4 and chip U1, the anode and the pin 5 of chip U1 of the negative electrode connection diode D2 of diode D1, chip
The negative electrode and the anode of diode D3 of the connection diode D2 of pin 6 of U1, the negative electrode of the connection diode D3 of pin 7 of chip U1 and two poles
The anode of pipe D5, the negative electrode of diode D5 connect the pin 8 of chip U1, model CJ3030E/F of the chip U1.
As preferred version of the present utility model：The diode D1-D4 is light emitting diode.
Compared with prior art, the beneficial effects of the utility model are：The utility model LED linear drive system adopts line
Property the circuit that drives, in input voltage higher than in the case of standard input voltage, such as standard AC220V-50W, in AC210V-
During 240V, by adjusting load current, it is ensured that power output is substantially constant at 50W or so and average current harmonic wave is less than 5%.
Description of the drawings
Fig. 1 is overall diagram of the present utility model；
Fig. 2 is circuit diagram of the present utility model；
Fig. 3 is LED power datagram.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Embodiment in based on the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1-3 are referred to, a kind of LED linear drive system, including chip U1, bidirectional thyristor Q2, rectifier bridge BD1 and electricity
One voltage input end connection resistance VD1 and 220V alternating current of resistance R9, the rectifier bridge BD1, another electricity of rectifier bridge BD1
The other end of the other end and 220V alternating currents of pressure input connection resistance VD1, the voltage output end connection resistance of rectifier bridge BD1
The anode of R1, resistance R2 and diode D1, the other end connection resistance R3 of resistance R1, the other end connection resistance R4 of resistance R2,
The pin 3 of the other end connection electric capacity C3 of resistance R4, resistance R5, the negative electrode of diode D4 and chip U1, the other end of resistance R5
The drain electrode of connection metal-oxide-semiconductor Q1, the earth terminal of the other end connection rectifier bridge BD1 of electric capacity C3, the drain electrode of metal-oxide-semiconductor Q1, electric capacity C3, electricity
Resistance R8, a main electrode of bidirectional thyristor Q2, resistance R10, resistance R11, resistance R12 and electric capacity C2, the grid of metal-oxide-semiconductor Q1 connect
Meet the other end, the other end of resistance R8, resistance R6 and the resistance R7 of electric capacity C4, the other end connection electric capacity C1 and MOS of resistance R7
Another main electrode of pipe Q2, the other end connection other end of electric capacity C2 of electric capacity C1, the other end of resistance R3, resistance R8 and double
To the control pole of IGCT Q1, the other end of the other end connection resistance R10 of resistance R9, the other end of resistance R11, resistance R12
The other end, the anode of diode D4 and chip U1 pin 1, diode D1 negative electrode connection diode D2 anode and chip U1
Pin 5, the negative electrode and the anode of diode D3 of the connection diode D2 of pin 6 of chip U1, the connection diode D3 of pin 7 of chip U1
Negative electrode and the anode of diode D5, the negative electrode of diode D5 connect the pin 8 of chip U1, model CJ3030E/ of the chip U1
F.
Diode D1-D4 is light emitting diode.
Operation principle of the present utility model is：This circuit voltage sampling network and voltage/current sampling network are constituted（As schemed
1）, by R2, R4, R5, Q1 are constituted wherein voltage sample network, are connected to the 3rd pin of IC on wherein R5, and R6 provides biased electrical to Q1
Pressure so as to be operated in linear work area, because input voltage is pulsating dc voltage, the 3rd pin input voltages of IC are also arteries and veins
Dynamic DC voltage, then IC driving currents are also and input voltage synchronization so to have reached low current harmonic wave purpose.
In addition, voltage/current sampling network is mainly by R1, R3, R9, R10, R11, R12, Q2 are constituted, when input voltage becomes
Gao Shi, load current accordingly increase, while the potential-divider network of R1, R3, R9 composition causes R9 terminal voltages to raise, C2 is to branch pressure voltage
Filtering, there is provided DC voltage gives Q2 sampling pins, by R6, R7 provides bias current to Q2 to VCC, when Q2 sampling pins are detected
When voltage is raised, by the output pin voltage pull-down of Q2, because Q2 output ends are connected to Q1 G poles by R7, so G pole tensions are pulled low,
The 3rd pin voltages of IC are caused also to be pulled low, i.e. IC driving currents have dropped, but current phase does not change.So reaching perseverance
While power, it is ensured that low current harmonic wave.
As the 3rd pin of CJ3030E/F chips has simulation dimming function,（As shown in Figure 3）I.e. voltage is in 0.12V-
During 1.2V, driving current can be adjusted between 10%-100%, using this feature, coordinate invariable power circuit and low current harmonic wave electricity
Road, can accomplish invariable power and low current harmonic wave function simultaneously.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type is by claims rather than described above is limited, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as restriction
Involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Contain an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (2)
1. a kind of LED linear drive system, including chip U1, bidirectional thyristor Q2, rectifier bridge BD1 and resistance R9, its feature exists
In, a voltage input end connection resistance VD1 and 220V alternating current of the rectifier bridge BD1, another voltage of rectifier bridge BD1
The other end of the other end and 220V alternating currents of input connection resistance VD1, the voltage output end connection resistance of rectifier bridge BD1
The anode of R1, resistance R2 and diode D1, the other end connection resistance R3 of resistance R1, the other end connection resistance R4 of resistance R2,
The pin 3 of the other end connection electric capacity C3 of resistance R4, resistance R5, the negative electrode of diode D4 and chip U1, the other end of resistance R5
The drain electrode of connection metal-oxide-semiconductor Q1, the earth terminal of the other end connection rectifier bridge BD1 of electric capacity C3, the drain electrode of metal-oxide-semiconductor Q1, electric capacity C3, electricity
Resistance R8, a main electrode of bidirectional thyristor Q2, resistance R10, resistance R11, resistance R12 and electric capacity C2, the grid of metal-oxide-semiconductor Q1 connect
Meet the other end, the other end of resistance R8, resistance R6 and the resistance R7 of electric capacity C4, the other end connection electric capacity C1 and MOS of resistance R7
Another main electrode of pipe Q2, the other end connection other end of electric capacity C2 of electric capacity C1, the other end of resistance R3, resistance R8 and double
To the control pole of IGCT Q1, the other end of the other end connection resistance R10 of resistance R9, the other end of resistance R11, resistance R12
The other end, the anode of diode D4 and chip U1 pin 1, diode D1 negative electrode connection diode D2 anode and chip U1
Pin 5, the negative electrode and the anode of diode D3 of the connection diode D2 of pin 6 of chip U1, the connection diode D3 of pin 7 of chip U1
Negative electrode and the anode of diode D5, the negative electrode of diode D5 connect the pin 8 of chip U1, model CJ3030E/ of the chip U1
F.
2. a kind of LED linear drive system according to claim 1, it is characterised in that diode D1-D4 is luminous two
Pole pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620859788.6U CN206024164U (en) | 2016-08-09 | 2016-08-09 | A kind of LED linear drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620859788.6U CN206024164U (en) | 2016-08-09 | 2016-08-09 | A kind of LED linear drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206024164U true CN206024164U (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620859788.6U Active CN206024164U (en) | 2016-08-09 | 2016-08-09 | A kind of LED linear drive system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106061045A (en) * | 2016-08-09 | 2016-10-26 | 中山市昌捷光电科技有限公司 | LED linear driving system |
-
2016
- 2016-08-09 CN CN201620859788.6U patent/CN206024164U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106061045A (en) * | 2016-08-09 | 2016-10-26 | 中山市昌捷光电科技有限公司 | LED linear driving system |
| CN106061045B (en) * | 2016-08-09 | 2024-01-09 | 中山市昌捷光电科技有限公司 | LED linear driving system |
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