CN106612576A - Current balance circuit, current balance device and display equipment - Google Patents
Current balance circuit, current balance device and display equipment Download PDFInfo
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- CN106612576A CN106612576A CN201611204834.XA CN201611204834A CN106612576A CN 106612576 A CN106612576 A CN 106612576A CN 201611204834 A CN201611204834 A CN 201611204834A CN 106612576 A CN106612576 A CN 106612576A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Abstract
The invention discloses a current balance circuit, a current balance device and display equipment. The current balance circuit comprises two bias ends, four transistors, and two current limiting units. The input end of the first transistor is a first input end of the circuit. The output end of the first transistor is connected with the input end of the first current limiting unit. The controlled end of the first transistor, the first bias end and the controlled end of the second transistor are connected with one another. The input end of the second transistor is a second input end of the circuit. The output end of the second transistor is connected with the input end of the second current limiting unit. The input end of the third transistor is connected with the output end of the first current limiting unit. The output end of the third transistor is a first output end of the circuit. The controlled end of the third transistor, the second bias end and the controlled end of the fourth transistor are connected with one another. The input end of the fourth transistor is connected with the output end of the second current limiting unit. The output end of the fourth transistor is a second output end of the circuit. Through the technical scheme, the application range of the current balance circuit can be widened.
Description
Technical field
The present invention relates to current balance type technical field, more particularly to a kind of current balance circuit, current balancing device and aobvious
Show equipment.
Background technology
The LED drive system designed using existing current balance circuit is as shown in Figure 1.In circuit shown in Fig. 1, electricity is added in
The voltage at resistance Z1 two ends is equal with the voltage for being added in resistance Z2 two ends, when resistance Z1 is equal with the resistance of resistance Z2, flows through two
The electric current of lamp bar is of substantially equal.Although source current can be divided into two-way output by the current balance circuit, it is based on
The drive system of the circuit design can only drive two-way loaded work piece, and range of application is narrower.
The content of the invention
The main object of the present invention is to provide a kind of current balance circuit, it is intended to widen the application model of current balance circuit
Enclose.
For achieving the above object, current balance circuit proposed by the present invention include the first offset side, the second offset side, first
Input, the second input, the first outfan, the second outfan, the first transistor, transistor seconds, third transistor, the 4th
Transistor, the first flow-restriction and the second flow-restriction；The input of the first transistor is connected with the first input end,
The outfan of the first transistor is connected with the input of first flow-restriction, the controlled end of the first transistor,
The controlled end interconnection of first offset side and the transistor seconds, the input of the transistor seconds is defeated with described second
Enter end connection, the outfan of the transistor seconds is connected with the input of second flow-restriction；The third transistor
Input be connected with the outfan of first flow-restriction, the outfan of the third transistor and first outfan
Connection, the controlled end interconnection of the controlled end of the third transistor, second offset side and the 4th transistor, described the
The input of four transistors is connected with the outfan of second flow-restriction, the outfan of the 4th transistor and described
Two outfans connect.
Preferably, first offset side is connected with the first input end, and second offset side is defeated with described second
Go out end connection.
Preferably, the current balance circuit also includes the 3rd flow-restriction and the 4th flow-restriction, the 3rd current limliting
The input of unit is connected with first offset side, and the outfan of the 3rd flow-restriction, the first transistor are received
The controlled end interconnection of control end and the transistor seconds；The input of the 4th flow-restriction, the third transistor are received
The controlled end interconnection of control end and the 4th transistor, outfan and second offset side of the 4th flow-restriction connect
Connect.
Preferably, the resistance of the 3rd flow-restriction and the 4th flow-restriction is adjustable.
Preferably, the current balance circuit also includes the 5th flow-restriction and the 6th flow-restriction, the 5th current limliting
The input of unit, the input of the 6th flow-restriction, the outfan of first flow-restriction and second current limliting
The outfan interconnection of unit, its connecting node is the common port of the current balance circuit；The output of the 5th flow-restriction
End is connected with the input of the third transistor, the outfan of the 6th flow-restriction and the input of the 4th transistor
End connection.
Preferably, first flow-restriction be first resistor, second flow-restriction be second resistance, the described 3rd
Flow-restriction is 3rd resistor, and the 4th flow-restriction is the 4th resistance, and the 5th flow-restriction is the 5th resistance, described
6th flow-restriction is the 6th resistance.
Preferably, the first transistor is and the transistor seconds is NPN type triode, the third transistor
And the 4th transistor is PNP type triode.
The present invention also proposes a kind of current balancing device, and the current balancing device includes current balance type as above electricity
Road, wherein, the current balance circuit include the first offset side, the second offset side, the first transistor, transistor seconds, the 3rd
Transistor, the 4th transistor, the first flow-restriction and the second flow-restriction；The input of the first transistor is the electric current
The first input end of balancing circuitry, the outfan of the first transistor is connected with the input of first flow-restriction, institute
State the controlled end interconnection of the controlled end, first offset side and the transistor seconds of the first transistor, second crystal
The input of pipe is the second input of the current balance circuit, the outfan of the transistor seconds and second current limliting
The input connection of unit；The input of the third transistor is connected with the outfan of first flow-restriction, and described
The outfan of three transistors is the first outfan of the current balance circuit, the controlled end of the third transistor, described
The controlled end interconnection of two offset sides and the 4th transistor, input and second flow-restriction of the 4th transistor
Outfan connection, the outfan of the 4th transistor is the second outfan of the current balance circuit.
The present invention also propose a kind of display device, the display device include current balance circuit, the current balance circuit with
The structure of above-mentioned current balance circuit is identical, and here is omitted.
For the drive system designed using current balance circuit proposed by the present invention, positive pole and the electric current of input power are put down
First is formed between the first input end of weighing apparatus circuit and drives branch road, the positive pole of input power and the second input of current balance circuit
Second is formed between end and drives branch road, the 3rd is formed between the negative pole of input power and the first outfan of current balance circuit and is driven
Dynamic branch road, forms the 4th and drives branch road between the negative pole of input power and the second outfan of current balance circuit.That is,
Based on the drive system that this current balance circuit is designed, four road loaded work pieces can be independently driven.Accordingly, with respect to existing skill
Art, technical solution of the present invention has widened the range of application of current balance circuit.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the electrical block diagram that current balance circuit is applied to LED drive system in prior art；
Fig. 2 is the electrical block diagram of current balance circuit first embodiment of the present invention；
Fig. 3 is the electrical block diagram of current balance circuit second embodiment of the present invention；
Fig. 4 is the electrical block diagram of current balance circuit 3rd embodiment of the present invention；
Fig. 5 is the electrical block diagram of current balance circuit fourth embodiment of the present invention；
Fig. 6 is the electrical block diagram that current balancing device of the present invention is applied to the embodiment of LED drive system one；
Fig. 7 is the electrical block diagram that current balancing device of the present invention is applied to another embodiment of LED drive system；
Fig. 8 is the electrical block diagram that current balancing device of the present invention is applied to the another embodiment of LED drive system.
Drawing reference numeral explanation：
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the embodiment of the present invention,
It is only used for explaining in relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc., if
The particular pose changes, then directionality indicates also correspondingly to change therewith.
In addition, the description for being related to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", "
Two " at least one this feature can be expressed or be implicitly included to feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or when cannot realize it will be understood that the combination of this technical scheme is not present, also not in the protection model of application claims
Within enclosing.
The present invention proposes a kind of current balance circuit and device.
Refer to Fig. 2, in the first embodiment, current balance circuit include the first offset side B1, the second offset side B2, the
One input IN1, the second input IN2, the first outfan OUT1, the second outfan OUT2, the first transistor Q1, the second crystal
Pipe Q2, third transistor Q3, the 4th transistor Q4, the first flow-restriction 10 and the second flow-restriction 20.
Wherein, the input of the first transistor Q1 is connected with first input end IN1, the outfan of the first transistor Q1 and
The input connection of one flow-restriction 10, the controlled end of the first transistor Q1, the first offset side B1 and transistor seconds Q2 are received
Control end interconnection, the input of transistor seconds Q2 is connected with the second input IN2, and the outfan of transistor seconds Q2 and second is limited
The input connection of stream unit 20；The input of third transistor Q3 is connected with the outfan of the first flow-restriction 10, and is trimorphism
The outfan of body pipe Q3 is connected with the first outfan OUT1, and the controlled end of third transistor Q3, the second offset side B2 and the 4th are brilliant
The controlled end interconnection of body pipe Q4, the input of the 4th transistor Q4 is connected with the outfan of the second flow-restriction 20, the 4th crystal
The outfan of pipe Q4 is connected with the second outfan OUT2.
Here, the first flow-restriction 10 is identical with the manufacturing process and electrical parameter of the second flow-restriction 20, first crystal
Pipe Q1 is identical with the manufacturing process and electrical parameter of transistor seconds Q2, the manufacture work of third transistor Q3 and the 4th transistor Q4
Skill and electrical parameter are identical.
Specifically, the first flow-restriction 10 is first resistor R1, and the second flow-restriction 20 is second resistance R2.First crystal
Pipe Q1 and transistor seconds Q2 are NPN type triode or N-MOS pipes, and third transistor Q3 and the 4th transistor Q4 are
PNP type triode or P-MOS are managed.This sentences the first transistor Q1 and transistor seconds Q2 and is NPN type triode, trimorphism
Body pipe Q3 and the 4th transistor Q4 are as a example by PNP type triode and illustrate.
When this current balance circuit is in running order：
(1) due to falling in the first transistor Q1 and, the first transistor Q1 equal in the base voltage of transistor seconds Q2 that fall
And the PN junction pressure drop of transistor seconds Q2 is equal, therefore, the voltage fallen in the first transistor Q1 emitter stages with fall in the second crystal
The voltage of pipe Q2 emitter stages is equal.That is, the voltage fallen in first resistor R1 first end with fall in second resistance R2 first end
Voltage is equal.
(2) due to falling in third transistor Q3 and, third transistor Q3 equal in the base voltage of the 4th transistor Q4 that fall
And the 4th transistor Q4 PN junction pressure drop it is equal, therefore, the voltage fallen in third transistor Q3 emitter stage with fall in the 4th crystal
The voltage of pipe Q4 emitter stages is equal.That is, the voltage fallen at the end of first resistor R1 second with fall at the end of second resistance R2 second
Voltage is equal.
(3) from (1), (2), the voltage for being added in first resistor R1 two ends and the voltage phase for being added in second resistance R2 two ends
Deng, but due to first resistor R1 it is equal with the manufacturing process of second resistance R2 and electrical parameter, therefore, flow through first resistor R1
Electric current it is equal with the electric current for flowing through second resistance R2.
Comprehensive (1), (2), (3), when using this current balance circuit design driven system, the positive pole of input power VI with
First is formed between the first input end IN1 of current balance circuit and drives branch road (figure do not mark), the positive pole of input power VI with
Second is formed between second input IN2 of current balance circuit and drives branch road (figure do not mark), the negative pole of input power VI with
The 3rd is formed between first outfan OUT1 of current balance circuit and drives branch road (figure do not mark), the negative pole of input power VI with
The 4th is formed between second outfan OUT2 of current balance circuit and drives branch road (figure is not marked), also, flow through each driving and propped up
The size of current on road is equal.
That is, for the drive system designed using this current balance circuit, at least four tunnels can be driven to load work
Make, and it is equal to flow through the size of current of each driving branch road.Therefore, this current balance circuit not only can realize flow equalizing function,
And relative to prior art, widened the range of application of current balance circuit.
Based on above-mentioned first embodiment, Fig. 3 is referred to, in a second embodiment, above-mentioned first offset side B1 and first
Input IN1 connects, and the second offset side B2 is connected with the second outfan OUT2.
It is the first transistor Q1, transistor seconds Q2, third transistor Q3 and the 4th by input power VI in the present embodiment
Transistor Q4 provides biasing.
Corresponding with the present embodiment, the present invention also proposes a kind of current balancing device, and the current balancing device is as shown in Figure 3
Current balance circuit it is integrated, can be integrated chip, or independent electronic installation, form is not limited.Wherein, electric current is put down
The connecting node of the first input end IN1 and the first offset side B1 of weighing apparatus circuit is the first input end IN1 of current balancing device, electric
Second input IN2 of mobile equilibrium circuit is the second input IN2 of current balancing device, and the first of current balance circuit exports
End OUT1 is the first outfan OUT1 of current balancing device, the second outfan OUT2 of current balance circuit and the second offset side
The connecting node of B2 is the second outfan OUT2 of current balancing device.
Fig. 6 is referred to, is if desired worked using this current balancing device design driven system drive lamp bar, then can make the
The positive drive end of one lamp bar (figure is not marked) is connected with the positive pole of input power VI, bears the first of drive end and current balancing device
Input IN1 connects；The positive drive end of the second lamp bar (figure is not marked) is connected with the positive pole of input power VI, bears drive end with electricity
The second input IN2 connections of mobile equilibrium device；The of the positive drive end of the 3rd lamp bar (figure do not mark) and current balancing device
One outfan OUT1 connects, and negative drive end is connected with the negative pole of input power VI；The positive drive end of the 4th lamp bar (figure is not marked)
It is connected with the second outfan OUT2 of current balancing device, negative drive end is connected with the negative pole of input power VI.
In drive system shown in Fig. 6, the size of current for flowing through each lamp bar is equal.When damaging occurs in current balancing device
When, the current balancing device for directly more renewing is very easy.
Based on above-mentioned first embodiment, Fig. 4 is referred to, in the third embodiment, current balance circuit also includes the 3rd
The flow-restriction 40 of flow-restriction 30 and the 4th, the input of the 3rd flow-restriction 30 is connected with the first offset side B1, the 3rd current limliting
The controlled end interconnection of the outfan, the controlled end of the first transistor Q1 and transistor seconds Q2 of unit 30；4th flow-restriction 40
Input, the controlled end of third transistor Q3 and the 4th transistor Q4 controlled end interconnection, the output of the 4th flow-restriction 40
End is connected with the second offset side B2.
It is the first transistor Q1, transistor seconds Q2, third transistor Q3 and the by bias supply VAUX in the present embodiment
Four transistor Q4 provide biasing.This way it is possible to avoid the voltage and the 4th between the colelctor electrode and emitter stage of the first transistor Q1
Voltage between the colelctor electrode and emitter stage of transistor Q4 is clamped so that the first transistor Q1 and the 4th transistor Q4 keeps electricity
Pressure regulatory function, is more fully utilized.
Here, the 3rd flow-restriction 30 is identical with the manufacturing process and electrical parameter of the 4th flow-restriction 40.Specifically,
Three flow-restrictions 30 are 3rd resistor R3, and the 4th flow-restriction 40 is the 4th resistance R4.
Corresponding with the present embodiment, the present invention also proposes a kind of current balancing device, and the current balancing device is as shown in Figure 4
Current balance circuit it is integrated, can be integrated chip, or independent electronic installation, form is not limited.Wherein, electric current is put down
Weighing apparatus circuit first input end IN1 for current balancing device first input end IN1, the second input of current balance circuit
IN2 is the second input IN2 of current balancing device, and the first outfan OUT1 of current balance circuit is current balancing device
First outfan OUT1, the second outfan OUT2 of current balance circuit are the second outfan OUT2 of current balancing device, electricity
First offset side B1 of mobile equilibrium circuit for current balancing device the first offset side B1, the second offset side of current balance circuit
B2 is the second offset side B2 of current balancing device.
Fig. 7 is referred to, is if desired worked using this current balancing device design driven system drive lamp bar, then can make the
The positive drive end of one lamp bar is connected with the positive pole of input power VI, bears the first input end IN1 of drive end and current balancing device
Connection；The positive drive end of the second lamp bar is connected with the positive pole of input power VI, bears drive end defeated with the second of current balancing device
Enter and hold IN2 to connect；The positive drive end of the 3rd lamp bar is connected with the first outfan OUT1 of current balancing device, bear drive end with it is defeated
Enter the negative pole connection of power supply VI；The positive drive end of the 4th lamp bar is connected with the second outfan OUT2 of current balancing device, bears and drives
Moved end is connected with the negative pole of input power VI；The positive pole of the first offset side B1 and bias supply VAUX of current balancing device connects
Connect, the second offset side B2 of current balancing device is connected with the negative pole of bias supply VAUX.
In drive system shown in Fig. 7, the size of current for flowing through each lamp bar is equal.When damaging occurs in current balancing device
When, the current balancing device for directly more renewing is very easy.
It is understood that when the 3rd flow-restriction 30 and the 4th flow-restriction 40 resistance can timing, can be according to stream
The electric current of Jing transistor collectors adjusts the resistance of the 3rd flow-restriction 30 and the 4th flow-restriction 40 so that the base stage of transistor
Electric current matches with collector current.
Or, an adjustable electric is set between the positive pole of bias supply VAUX and the first offset side B1 of current balancing device
Resistance (figure is to illustrate).So, when the electric current for flowing through transistor collector changes, the resistance for adjusting adjustable resistance can be passed through
Value so that the base current of transistor matches with collector current.
Based on above-mentioned 3rd embodiment, Fig. 5 is referred to, in the fourth embodiment, current balance circuit also includes the 5th
The flow-restriction 60 of flow-restriction 50 and the 6th, the input of the 5th flow-restriction 50, the input of the 6th flow-restriction 60, first
The outfan interconnection of the outfan of flow-restriction 40 and the second flow-restriction 20, its connecting node is public for current balance circuit
End P；The outfan of the 5th flow-restriction 50 is connected with the input of third transistor Q3, the outfan of the 6th flow-restriction 60 with
The input connection of the 4th transistor Q4.
In the present embodiment, by common port P ground connection, input supply voltage balanced to ground can be made.
Corresponding with the present embodiment, the present invention also proposes a kind of current balancing device, and the current balancing device is as shown in Figure 5
Current balance circuit it is integrated, can be integrated chip, or independent electronic installation, form is not limited.Wherein, electric current is put down
Weighing apparatus circuit first input end IN1 for current balancing device first input end IN1, the second input of current balance circuit
IN2 is the second input IN2 of current balancing device, and the first outfan OUT1 of current balance circuit is current balancing device
First outfan OUT1, the second outfan OUT2 of current balance circuit are the second outfan OUT2 of current balancing device, electricity
First offset side B1 of mobile equilibrium circuit for current balancing device the first offset side B1, the second offset side of current balance circuit
B2 is the second offset side B2 of current balancing device, and the common port P of current balance circuit is the common port P of current balancing device.
Fig. 8 is referred to, is if desired worked using this current balancing device design driven system drive lamp bar, then can make the
The positive drive end of one lamp bar is connected with the positive pole of input power VI, bears drive end and connects with the first input end IN of current balancing device
Connect；The positive drive end of the second lamp bar is connected with the positive pole of input power VI, bears the second input of drive end and current balancing device
End IN2 connections；The positive drive end of the 3rd lamp bar is connected with the first outfan OUT1 of current balancing device, bears drive end with input
The negative pole connection of power supply VI；The positive drive end of the 4th lamp bar is connected with the second outfan OUT2 of current balancing device, bears and drives
End is connected with the negative pole of input power VI；First offset side B1 of current balancing device is connected with the positive pole of bias supply VAUX,
Second offset side B2 of current balancing device is connected with the negative pole of bias supply VAUX, the common port P ground connection of current balancing device.
In drive system shown in Fig. 7, the size of current for flowing through each lamp bar is equal.When damaging occurs in current balancing device
When, the current balancing device for directly more renewing is very easy.
It is understood that when the 3rd flow-restriction 30 and the 4th flow-restriction 40 resistance can timing, can be according to stream
The electric current of Jing transistor collectors adjusts the resistance of the 3rd flow-restriction 30 and the 4th flow-restriction 40, is worth the base stage of transistor
Electric current matches with collector current.
Or, an adjustable electric is set between the positive pole of bias supply VAUX and the first offset side B1 of current balancing device
Resistance.So, when the electric current for flowing through transistor collector changes, the resistance for adjusting adjustable resistance can be passed through so that brilliant
The base current of body pipe matches with collector current.
The present invention also proposes a kind of display device, and the display device includes current balance circuit, the current balance circuit
Concrete structure with reference to above-described embodiment, because display device employs whole technical schemes of above-mentioned all embodiments, therefore extremely
All beneficial effects that less technical scheme with above-described embodiment is brought, this is no longer going to repeat them.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in the scope of patent protection of the present invention in other related technical fields.
Claims (9)
1. a kind of current balance circuit, it is characterised in that including the first offset side, the second offset side, first input end, second defeated
Enter end, the first outfan, the second outfan, the first transistor, transistor seconds, third transistor, the 4th transistor, the first limit
Stream unit and the second flow-restriction；
The input of the first transistor is connected with the first input end, the outfan of the first transistor and described
The input connection of one flow-restriction, the controlled end of the first transistor, first offset side and the transistor seconds
Controlled end interconnection, the input of the transistor seconds is connected with second input, the output of the transistor seconds
End is connected with the input of second flow-restriction；
The input of the third transistor is connected with the outfan of first flow-restriction, the output of the third transistor
End is connected with first outfan, the controlled end of the third transistor, second offset side and the 4th transistor
Controlled end interconnection, the input of the 4th transistor is connected with the outfan of second flow-restriction, and the described 4th is brilliant
The outfan of body pipe is connected with second outfan.
2. current balance circuit as claimed in claim 1, it is characterised in that first offset side and the first input end
Connection, second offset side is connected with second outfan.
3. current balance circuit as claimed in claim 1, it is characterised in that the current balance circuit also includes the 3rd current limliting
Unit and the 4th flow-restriction, the input of the 3rd flow-restriction is connected with first offset side, the 3rd current limliting
The controlled end interconnection of the outfan of unit, the controlled end of the first transistor and the transistor seconds；4th current limliting
The controlled end interconnection of the input of unit, the controlled end of the third transistor and the 4th transistor, the 4th current limliting
The outfan of unit is connected with second offset side.
4. current balance circuit as claimed in claim 3, it is characterised in that the 3rd flow-restriction and the 4th current limliting
The resistance of unit is adjustable.
5. current balance circuit as claimed in claim 4, it is characterised in that the current balance circuit also includes the 5th current limliting
Unit and the 6th flow-restriction, the input of the 5th flow-restriction, the input of the 6th flow-restriction, described first
The outfan interconnection of the outfan of flow-restriction and second flow-restriction, its connecting node is the current balance circuit
Common port；The outfan of the 5th flow-restriction is connected with the input of the third transistor, the 6th flow-restriction
Outfan be connected with the input of the 4th transistor.
6. current balance circuit as claimed in claim 5, it is characterised in that first flow-restriction is first resistor, institute
It is second resistance to state the second flow-restriction, and the 3rd flow-restriction is 3rd resistor, and the 4th flow-restriction is the 4th electric
Resistance, the 5th flow-restriction is the 5th resistance, and the 6th flow-restriction is the 6th resistance.
7. current balance circuit as claimed in claim 1, it is characterised in that the first transistor is and second crystal
Pipe is NPN type triode, and the third transistor and the 4th transistor are PNP type triode.
8. a kind of current balancing device, it is characterised in that include the current balance type electricity as described in claim 1-7 any one
Road.
9. a kind of display device, it is characterised in that include the current balance circuit as described in claim 1-7 any one.
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| CN201611204834.XA CN106612576B (en) | 2016-12-22 | 2016-12-22 | Current balance circuit, current balancing device and display equipment |
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| CN201611204834.XA CN106612576B (en) | 2016-12-22 | 2016-12-22 | Current balance circuit, current balancing device and display equipment |
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| CN106612576A true CN106612576A (en) | 2017-05-03 |
| CN106612576B CN106612576B (en) | 2019-03-08 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0786909A (en) * | 1993-06-30 | 1995-03-31 | Nec Corp | Output circuit for semiconductor integrated circuit |
| CN101060731A (en) * | 2006-04-17 | 2007-10-24 | 硕颉科技股份有限公司 | LED current balancing circuit |
| CN103234642A (en) * | 2013-04-15 | 2013-08-07 | 电子科技大学 | Integrating pre-circuit of reading circuit in infrared focal plane array detector |
| CN104010426A (en) * | 2014-06-20 | 2014-08-27 | 南京航空航天大学 | Automatic current equalizing circuit suitable for multiple LED strings connected in parallel |
| US20160295655A1 (en) * | 2015-03-31 | 2016-10-06 | Varroc Lighting Systems S.R.O. | Arrangement and method for controlling a plurality of light-emitting diodes which are connected in series |
-
2016
- 2016-12-22 CN CN201611204834.XA patent/CN106612576B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0786909A (en) * | 1993-06-30 | 1995-03-31 | Nec Corp | Output circuit for semiconductor integrated circuit |
| CN101060731A (en) * | 2006-04-17 | 2007-10-24 | 硕颉科技股份有限公司 | LED current balancing circuit |
| CN103234642A (en) * | 2013-04-15 | 2013-08-07 | 电子科技大学 | Integrating pre-circuit of reading circuit in infrared focal plane array detector |
| CN104010426A (en) * | 2014-06-20 | 2014-08-27 | 南京航空航天大学 | Automatic current equalizing circuit suitable for multiple LED strings connected in parallel |
| US20160295655A1 (en) * | 2015-03-31 | 2016-10-06 | Varroc Lighting Systems S.R.O. | Arrangement and method for controlling a plurality of light-emitting diodes which are connected in series |
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