CN106332350B - It is linear to turn segmentation output regulating circuit - Google Patents
It is linear to turn segmentation output regulating circuit Download PDFInfo
- Publication number
- CN106332350B CN106332350B CN201610762154.3A CN201610762154A CN106332350B CN 106332350 B CN106332350 B CN 106332350B CN 201610762154 A CN201610762154 A CN 201610762154A CN 106332350 B CN106332350 B CN 106332350B
- Authority
- CN
- China
- Prior art keywords
- resistance
- pin
- connect
- operational amplifier
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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]
- H05B45/10—Controlling the intensity of the light
Abstract
The invention discloses a kind of linear turn of segmentation output regulating circuit, special piece is：Circuit 1 is set including inflection point, seeks poor mlultiplying circuit 2, mlultiplying circuit 3 of summing adjusts potentiometer RW, and inflection point sets circuit 1 to be made of resistance R1, resistance R2；Poor mlultiplying circuit 2 is asked to be made of operational amplifier U3, operational amplifier U4, resistance R8, resistance R9, resistance R10, resistance R11；Mlultiplying circuit 3 of summing is made of operational amplifier U1, operational amplifier U2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7.Circuit of the present invention is simple, of low cost, dependable performance, it is adaptable by linear input voltage be transformed to segmentation voltage, with segmented mode change output voltage slope.
Description
Technical field
It is more particularly to a kind of linearly to input electricity the present invention relates to the manual hardware type regulating circuit in a kind of circuit system
Buckling is changed to segmentation voltage, changes the regulating circuit of output voltage slope with segmented mode.
Background technology
At present in many control devices, it is still widely used the side that potentiometer carries out control object voltage adjusting
Formula.But many times potentiometric rotation angle and the linear corresponding relation of output voltage differ surely preferable meet to control
The adjusting requirement of object.Such as：If the brightness of LED light be adjusted using potentiometer, because of low-light level of the human eye to LED light
In the range of variation it is very sensitive, it is insensitive to the variation of high intensity range, therefore user of service can it is expected in low intensity range
Finer adjusting can be reached, that is, wish that variation is slow in low intensity range, high intensity range variation is quick.
Invention content
A kind of circuit for being there is provided it is an object of the invention to overcome disadvantages mentioned above is simple, of low cost, dependable performance, suitable
Ying Xingqiang's is transformed to linear input voltage segmentation voltage, and linear turn of segmentation for changing output voltage slope with segmented mode is defeated
Go out regulating circuit.
The linear of the present invention turns segmentation output regulating circuit, sets circuit 1 including inflection point, seeks poor mlultiplying circuit 2, summation multiplies
Method circuit 3 adjusts potentiometer RW, wherein：Inflection point sets circuit 1 to be made of resistance R1, resistance R2；Poor mlultiplying circuit 2 is sought by transporting
Calculate amplifier U3, operational amplifier U4, resistance R8, resistance R9, resistance R10, resistance R11 compositions；Mlultiplying circuit 3 sum by operation
Amplifier U1, operational amplifier U2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 compositions；
The power end for adjusting potentiometer RW is connect with DC power supply VCC2, adjusts the ground terminal of potentiometer RW with circuit
GND connections, the adjustable output terminal for adjusting potentiometer RW are connect with the normal phase input end of operational amplifier U1, operational amplifier U1's
Output terminal is connect with the negative-phase input of operational amplifier U1, and the output terminal of operational amplifier U1 connects with the 1st pin of resistance R5
It connects, the 2nd pin of resistance R5 is connect with the normal phase input end of operational amplifier U2, the 2nd pin of resistance R5 and the 1st of resistance R6 the
Pin connects, and with circuit GND is connect the 2nd pin of resistance R6, and the 2nd pin of resistance R5 is connect with the 1st pin of resistance R7,
The 1st pin of resistance R3 is connect with the negative-phase input of operational amplifier U2, and with circuit GND is connect the 2nd pin of resistance R3,
The 1st pin of resistance R3 is connect with the 1st pin of resistance R4, and the 2nd pin of resistance R4 connects with the output terminal of operational amplifier U2
It connects, the output terminal of operational amplifier U1 is connect with the 1st pin of resistance R8, and the 2nd pin of resistance R8 is with operational amplifier U4's
Normal phase input end connects, and the 2nd pin of resistance R8 is connect with the 1st pin of resistance R9, and the 2nd pin of resistance R9 is with circuit
GND connections, the output terminal of operational amplifier U4 are connect with the 2nd pin of resistance R7, the output terminal and resistance of operational amplifier U4
The 2nd pin connection of R11, the negative-phase input of operational amplifier U4 are connect with the 1st pin of resistance R11, operational amplifier U4
Negative-phase input connect with the 2nd pin of resistance R10, the 1st pin of resistance R10 and the negative-phase input of operational amplifier U3
Connection, the negative-phase input of operational amplifier U3 are connect with the output terminal of operational amplifier U3, and the positive of operational amplifier U3 is defeated
Enter end to connect with the 1st pin of resistance R2, with circuit GND is connect the 2nd pin of resistance R2, the 1st pin and the electricity of resistance R2
The 2nd pin connection of R1 is hindered, the 1st pin of resistance R1 is connect with DC power supply VCC1.
Compared with prior art, the present invention with apparent advantageous effect, as can be known from the above technical solutions：The present invention realizes
Linear input voltage is transformed to segmentation voltage, voltage slope output is changed with segmented mode, has the circuit simple, at low cost
Honest and clean, dependable performance, it is adaptable the characteristics of.The present invention is applied to aircraft alarm lighting supply unit（Alarm lighting supply unit
Function be that brightness regulation is carried out to the headlamp of aircraft using voltage regulating mode), gone to control the brightness of related LED with Vout, i.e.,
Meet the LED low-light levels fine tuning of user, the requirement of high brightness coarse adjustment.
Description of the drawings
Fig. 1 is the circuit diagram of the present invention.
It is marked in figure：
1:Inflection point sets circuit；
2：Seek poor mlultiplying circuit；
3：Summation mlultiplying circuit；
RW：Adjust potentiometer；
VCC2：DC power supply；
VCC1：DC power supply；
GND：Circuit；
R1~R11:Resistance；
U1~U4:Operational amplifier；
Vout：Operational amplifier U2 output end voltage signals；
Vg：Inflection point sets 1 output end voltage signal of circuit；
Vin:Adjust the adjustable output end voltage signals of potentiometer RW.
Specific embodiment
Below in conjunction with attached drawing, to propose according to the present invention the linear specific embodiment for turning segmentation output regulating circuit,
Feature and its effect, detailed description are as follows：
The linear of the present invention turns segmentation output regulating circuit, sets circuit 1 including inflection point, seeks poor mlultiplying circuit 2, summation multiplies
Method circuit 3 adjusts potentiometer RW, wherein：Inflection point sets circuit 1 to be made of resistance R1, resistance R2；Poor mlultiplying circuit 2 is sought by transporting
Calculate amplifier U3, operational amplifier U4, resistance R8, resistance R9, resistance R10, resistance R11 compositions；Mlultiplying circuit 3 sum by operation
Amplifier U1, operational amplifier U2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 compositions；
The power end for adjusting potentiometer RW is connect with DC power supply VCC2, adjusts the ground terminal of potentiometer RW with circuit
GND connections, the adjustable output terminal for adjusting potentiometer RW are connect with the normal phase input end of operational amplifier U1, operational amplifier U1's
Output terminal is connect with the negative-phase input of operational amplifier U1, and the output terminal of operational amplifier U1 connects with the 1st pin of resistance R5
It connects, the 2nd pin of resistance R5 is connect with the normal phase input end of operational amplifier U2, the 2nd pin of resistance R5 and the 1st of resistance R6 the
Pin connects, and with circuit GND is connect the 2nd pin of resistance R6, and the 2nd pin of resistance R5 is connect with the 1st pin of resistance R7,
The 1st pin of resistance R3 is connect with the negative-phase input of operational amplifier U2, and with circuit GND is connect the 2nd pin of resistance R3,
The 1st pin of resistance R3 is connect with the 1st pin of resistance R4, and the 2nd pin of resistance R4 connects with the output terminal of operational amplifier U2
It connects, the output terminal of operational amplifier U1 is connect with the 1st pin of resistance R8, and the 2nd pin of resistance R8 is with operational amplifier U4's
Normal phase input end connects, and the 2nd pin of resistance R8 is connect with the 1st pin of resistance R9, and the 2nd pin of resistance R9 is with circuit
GND connections, the output terminal of operational amplifier U4 are connect with the 2nd pin of resistance R7, the output terminal and resistance of operational amplifier U4
The 2nd pin connection of R11, the negative-phase input of operational amplifier U4 are connect with the 1st pin of resistance R11, operational amplifier U4
Negative-phase input connect with the 2nd pin of resistance R10, the 1st pin of resistance R10 and the negative-phase input of operational amplifier U3
Connection, the negative-phase input of operational amplifier U3 are connect with the output terminal of operational amplifier U3, and the positive of operational amplifier U3 is defeated
Enter end to connect with the 1st pin of resistance R2, with circuit GND is connect the 2nd pin of resistance R2, the 1st pin and the electricity of resistance R2
The 2nd pin connection of R1 is hindered, the 1st pin of resistance R1 is connect with DC power supply VCC1.
The operational formula of circuit provided by the invention be Vout=[（Vin-Vg）× a+Vin] × b,
In above-mentioned operational formula, Vin is inflection point setting electricity to adjust the adjustable output end voltage signals of potentiometer RW, Vg
1 output voltage signal of road, a are the amplification coefficient of operational amplifier U4, and b is the amplification coefficient of operational amplifier U2, and Vout is fortune
Calculate amplifier U2 output end voltage signals.
DC power supply VCC2 is 10VDC, adjusts potentiometer RW rotation angles from 0 °~300 °, corresponding output voltage for 0~
10VDC, that is, the range for adjusting the adjustable output end voltage signal Vin of potentiometer RW is 0~10VDC.
DC voltage VCC1 is 15VDC, and resistance R1 design values are that 3k Ω, R2 design value are 2k Ω, then inflection point is set
Circuit output voltage signal Vg is 6VDC.
Resistance R3 design values be 5K Ω, resistance R4 design values be 5K Ω, resistance R5 design values be 15K Ω, resistance
R6 design values be 3.75K Ω, resistance R7 design values be 15K Ω, resistance R8 design values be 3K Ω, resistance R9 design values
For 15K Ω, resistance R10 design values are 3K Ω, and resistance R11 design values are 15K Ω, then understand in above-described resistance R3
Under~R11 design values, the amplification coefficient a of operational amplifier U4 is equal to 5, and the amplification coefficient b of operational amplifier U2 is equal to 1/3.
Inflection point setting circuit output voltage signal Vg is carried out following holding by operational amplifier U3, and operational amplifier U1 will be adjusted
Nodal potential meter RW is adjustable, and output end voltage signal Vin carries out following holding, then will adjust potentiometer using operational amplifier U4
RW is adjustable output end voltage signal Vin follows keep after signal follow holding with inflection point setting circuit output voltage signal Vg after
Differential signal, multiplied by with the amplification coefficient a of operational amplifier U4.Because of operational amplifier U1, U2, U3, U4 is supplied using single supply
Electricity, then:
Work as Vin<During Vg（That is Vin=0~6VDC）, it is known that（Vin-Vg）×a=0；
Work as Vin>During Vg（That is Vin=6~10VDC）, it is known that（Vin-Vg）× a=0~20VDC.
In mlultiplying circuit 3 of summing, the adjustable output end voltage signal Vin of potentiometer RW will be adjusted using operational amplifier U2
The signal after keeping is followed with the output signal of poor mlultiplying circuit 2 is asked to be multiplied by the amplification coefficient b of operational amplifier U2 after summing,
Then:
Work as Vin<During Vg（That is Vin=0~6VDC）, because（Vin-Vg）× a=0, so Vout=[（Vin-Vg）×a+Vin]
×b=（0+ Vin）× 1/3=0~2VDC；
Work as Vin>During Vg（That is Vin=6~10VDC）, it is known that Vout=[（Vin-Vg）×a+Vin]×b=[（0~4VDC）×
5+（6~10VDC）] × 1/3=2~10VDC.
I.e.：
When Vin is 0~6VDC, Vout=0~2VDC；
When Vin is 6~10VDC, Vout=2~10VDC.
As known from the above, it realizes and linear input voltage is transformed to segmentation voltage, voltage slope is changed with segmented mode
Output, and circuit is simple, of low cost, dependable performance, adaptable.
The above described is only a preferred embodiment of the present invention, not making limitation in any form to the present invention, appoint
Without departing from technical solution of the present invention content, technical spirit according to the present invention any is simply repaiied to what above example was made for what
Change, equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (1)
1. a kind of linear turn of segmentation output regulating circuit, it is characterised in that：Circuit 1 is set including inflection point, seeks poor mlultiplying circuit
2, mlultiplying circuit 3 of summing adjusts potentiometer RW, and inflection point sets circuit 1 to be made of resistance R1, resistance R2；Ask poor mlultiplying circuit 2 by
Operational amplifier U3, operational amplifier U4, resistance R8, resistance R9, resistance R10, resistance R11 composition；Mlultiplying circuit 3 sum by transporting
Calculate amplifier U1, operational amplifier U2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 composition；Adjust potentiometer RW's
Power end is connect with DC power supply VCC2, and with circuit GND is connect the ground terminal of adjusting potentiometer RW, and adjusting potentiometer RW's can
Output terminal is adjusted to be connect with the normal phase input end of operational amplifier U1, the output terminal of operational amplifier U1 and bearing for operational amplifier U1
Phase input terminal connects, and the output terminal of operational amplifier U1 is connect with the 1st pin of resistance R5, the 2nd pin of resistance R5 and operation
The normal phase input end connection of amplifier U2, the 2nd pin of resistance R5 are connect with the 1st pin of resistance R6, the 2nd pin of resistance R6
With circuit GND is connect, and the 2nd pin of resistance R5 is connect with the 1st pin of resistance R7, and the 1st pin of resistance R3 is put with operation
The negative-phase input connection of big device U2, with circuit GND is connect the 2nd pin of resistance R3, the 1st pin and the resistance R4 of resistance R3
The connection of the 1st pin, the 2nd pin of resistance R4 connect with the output terminal of operational amplifier U2, the output terminal of operational amplifier U1
It is connect with the 1st pin of resistance R8, the 2nd pin of resistance R8 is connect with the normal phase input end of operational amplifier U4, resistance R8's
2nd pin is connect with the 1st pin of resistance R9, and with circuit GND is connect the 2nd pin of resistance R9, and operational amplifier U4's is defeated
Outlet is connect with the 2nd pin of resistance R7, and the output terminal of operational amplifier U4 is connect with the 2nd pin of resistance R11, operation amplifier
The negative-phase input of device U4 is connect with the 1st pin of resistance R11, the negative-phase input of operational amplifier U4 and the 2nd of resistance R10 the
Pin connects, and the 1st pin of resistance R10 is connect with the negative-phase input of operational amplifier U3, and the negative of operational amplifier U3 is defeated
The output terminal for entering end with operational amplifier U3 is connect, and the normal phase input end of operational amplifier U3 is connect with the 1st pin of resistance R2,
With circuit GND is connect the 2nd pin of resistance R2, and the 1st pin of resistance R2 is connect with the 2nd pin of resistance R1, resistance R1's
1st pin is connect with DC power supply VCC1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610762154.3A CN106332350B (en) | 2016-08-31 | 2016-08-31 | It is linear to turn segmentation output regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610762154.3A CN106332350B (en) | 2016-08-31 | 2016-08-31 | It is linear to turn segmentation output regulating circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106332350A CN106332350A (en) | 2017-01-11 |
| CN106332350B true CN106332350B (en) | 2018-07-06 |
Family
ID=57789140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610762154.3A Active CN106332350B (en) | 2016-08-31 | 2016-08-31 | It is linear to turn segmentation output regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106332350B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103167681A (en) * | 2011-12-19 | 2013-06-19 | 上海航空电器有限公司 | High-accuracy segmentation adjustable power supply |
| CN203934057U (en) * | 2014-06-05 | 2014-11-05 | 常州顶芯半导体技术有限公司 | A kind of approximant adaptive LED linearity control circuit |
| CN104918381A (en) * | 2015-06-16 | 2015-09-16 | 常州顶芯半导体技术有限公司 | LED power supply segmented switching control module and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8040071B2 (en) * | 2010-12-14 | 2011-10-18 | O2Micro, Inc. | Circuits and methods for driving light sources |
-
2016
- 2016-08-31 CN CN201610762154.3A patent/CN106332350B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103167681A (en) * | 2011-12-19 | 2013-06-19 | 上海航空电器有限公司 | High-accuracy segmentation adjustable power supply |
| CN203934057U (en) * | 2014-06-05 | 2014-11-05 | 常州顶芯半导体技术有限公司 | A kind of approximant adaptive LED linearity control circuit |
| CN104918381A (en) * | 2015-06-16 | 2015-09-16 | 常州顶芯半导体技术有限公司 | LED power supply segmented switching control module and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106332350A (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107623968B (en) | Line voltage compensation circuit, LED driving system and driving method | |
| CN108767810B (en) | Current limiting circuit and current limiting device | |
| CN102143626B (en) | Control method of constant current source driver | |
| CN105445673A (en) | Direct-current constant-resistance electronic load apparatus | |
| CN103874296A (en) | LED constant-current driving circuit of multi-path self-adaptive loads | |
| CN106332350B (en) | It is linear to turn segmentation output regulating circuit | |
| CN104699158B (en) | Power supply circuit for constant current source | |
| CN112399676B (en) | Constant current driving circuit, calibration method thereof and lighting device | |
| CN106253676A (en) | A kind of constant-pressure type Switching Power Supply realizes the control line line structure of constant current output characteristic | |
| CN203799290U (en) | Current expanding circuit of three-terminal integrated voltage stabilizer | |
| CN108768369A (en) | A kind of light-operated switch | |
| CN207265920U (en) | A kind of speed change gear of Rubber Conveyor Belt Scrap | |
| WO2016026390A1 (en) | Motor control circuit for level laser | |
| CN203590168U (en) | Gain control circuit | |
| US9439251B2 (en) | Offset voltage eliminating circuit structure for protection mechanism of dimmer | |
| CN205121404U (en) | Adjustable reference voltage source circuit | |
| US20150381028A1 (en) | Method and circuit for reducing ripple of current output by current source | |
| CN108303178A (en) | A kind of halogen tungsten lamp power supply for spaceborne radiant calibration | |
| CN105652941B (en) | It is a kind of to reduce the device of pressure drop by adjusting dividing ratios | |
| CN204031099U (en) | A kind of square-wave generator | |
| CN103116378A (en) | Analog circuit with variable resistance | |
| EP3030050B1 (en) | Offset voltage eliminating circuit structure for protection mechanism of dimmer | |
| CN206133346U (en) | Power supply circuit | |
| CN207780642U (en) | Regulating circuit for aircraft instrument panel illumination | |
| CN206790449U (en) | A kind of failure circuit suitable for dead-band regulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |