CN207039453U - Single channel inputs positive and negative doubleway output power module of voltage regulation - Google Patents
Single channel inputs positive and negative doubleway output power module of voltage regulation Download PDFInfo
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- CN207039453U CN207039453U CN201720430183.XU CN201720430183U CN207039453U CN 207039453 U CN207039453 U CN 207039453U CN 201720430183 U CN201720430183 U CN 201720430183U CN 207039453 U CN207039453 U CN 207039453U
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- 230000033228 biological regulation Effects 0.000 title claims abstract description 14
- 230000009977 dual effect Effects 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
Technical problems to be solved needed for the utility model are to realize that single channel inputs positive and negative doubleway output power module of voltage regulation, including input bleeder circuit, operation amplifier mu balanced circuit, generating positive and negative voltage control output circuit.Power supply Vin realizes input buck functionality by resistance, amplifier input in the same direction is accessed by symmetrical series resistance bleeder circuit again, amplified according to dual operational amplifier LM358 working characteristics voltage stabilizing, dual power supply working environment is changed by single supply, symmetrical expression bipolarity generating positive and negative voltage is realized by output capacitor in the same direction filtering.Ensure the precision of voltage regulation as far as possible under the premise of ensureing that voltage can be separated into two groups of symmetrical generating positive and negative voltages.Simultaneity factor is simple in construction, inexpensive, the positive and negative dual output of dc source single ended input, solves the problems, such as the device that most applications need positive-negative power to power.
Description
Technical field
It the utility model is related to a kind of field of power supplies, more particularly to a kind of generating positive and negative voltage out-put supply with voltage stabilizing function
Circuit field.
Background technology
Positive and negative out-put supply module application is extensive, and positive-negative power is exported using single ended input both-end at present, output ripple electricity
Pressure is high, interference is larger, can not apply and ripple is being disturbed in sensitive equipment, and volume is relatively large, delivery efficiency is low, work(
Consume larger.
Operational amplifier generally uses in our life, has stronger common mode inhibition capacity, and high gain, defeated
Enter that impedance is low, thus the link for using it as amplification can make all technical of voltage-stabilized power supply be greatly improved.It is logical
Cross the improvement to circuit, it is possible to achieve single supply power supply operational amplifier voltage stabilizing generating positive and negative voltage output circuit.
The content of the invention
The utility model technical issues that need to address are to realize a kind of to realize generating positive and negative voltage with voltage stabilizing function
The circuit arrangement of output, the positive negative output electricity of low pressure under high voltage input is realized according to bleeder circuit and integrated operational amplifier circuit
Source module.
The technical problems to be solved in the utility model is achieved through the following technical solutions：
The utility model single channel, which inputs positive and negative doubleway output power module of voltage regulation, to be included：Input bleeder circuit, operation amplifier
Mu balanced circuit, generating positive and negative voltage control output circuit.
Described input bleeder circuit is made up of electric capacity C1 and resistance R1, R2, R3, R4, R5, R6.Electric capacity C1, R1, R2 group
Into circuit realiration the DC voltage value that can be distributed symmetrically is depressurized to high input voltage, then be made up of R3, R4, R5, R6
Series resistance bleeder circuit realize the controllable processing of voltage.
Described operation amplifier mu balanced circuit is using 1/2LM358 dual operational amplifiers, for realizing to the steady of circuit
Pressure acts on and internal frequency compensation, and single supply is converted into dual power supply.
Described generating positive and negative voltage control output circuit is made up of electric capacity C3, C4 and output port, for by after voltage stabilizing just
Bear symmetrical direct voltage output.
Described C3, C4 is all decoupling capacitance, and electric capacity C1, C2 of load operation amplifier in-phase output end serve suppression
Interference and the effect of filtering.
To achieve the above object, the technical solution adopted in the utility model is that single channel inputs positive and negative doubleway output voltage stabilizing electricity
Source module.Power supply Vin passes through the series resistance partial pressure optimized integration buck functionality of R1, R2 composition, then by R3, R4, R5, R6
Form symmetrical series resistance divider access operational amplifier input in the same direction.Operational amplifier is connected in voltage follower in itself
Form, it can be seen from operational amplifier work characteristics, the current potential between operational amplifier output terminal and dividing point is strictly equal, will
The output end of operational amplifier makees grounding, therefore the input direct-current of amplifier is just correspondingly being separated into two groups symmetrically just
Negative supply, symmetrical bias circuit construction is all provided with for power amplification class device, inside it, this just makes the straight of its output end
Stream current potential is approximately the half of input direct voltage.
The utility model has the following advantages compared with conventional power source module：
1) high input voltage can be made effectively to be depressured to realize that symmetrical voltage is distributed；
2) single channel input generating positive and negative voltage output dc source is realized, is solving most applications such as photodetector needs just
The problem of negative supply power supply device；
3) it is high to export the precision of voltage regulation；
4) whole circuit small volume, convenient and swift, reliability is high；
5) component is few needed for, and overall cost is relatively low；
Brief description of the drawings
Fig. 1 is the system block diagram that single channel inputs positive and negative doubleway output power module of voltage regulation.
Embodiment
Technical problems to be solved needed for the utility model are to realize that single channel inputs positive and negative doubleway output power module of voltage regulation.
The module includes input bleeder circuit, operation amplifier mu balanced circuit and generating positive and negative voltage control output circuit, inputs bleeder circuit
Output end is connected with the input of operation amplifier mu balanced circuit, and output end and the generating positive and negative voltage control of operation amplifier mu balanced circuit are defeated
Enter the input connection of circuit, ensure the precision of voltage regulation on the premise of ensureing that voltage can be separated into two groups of symmetrical positive-negative powers,
Simultaneity factor is simple in construction, realizes low cost.
Understand that the module includes the series connection voltage reduction module being made up of electric capacity C1 and resistance R1, R2 referring to Fig. 1, by resistance
The divider of R3, R4, R5, R6 and electric capacity C2 compositions makes tight into dual operational amplifier LM358 voltage and the current potential of dividing point
Lattice are equal, and dividing point is connected with operational amplifier LN1 (+), resistance R1, R2 dividing point and the Vcc ports of operational amplifier
It is connected, the Out access generating positive and negative voltage control output circuits of operational amplifier, while the output end of operational amplifier is made at ground connection
Manage, dc source is separated into symmetrical generating positive and negative voltage after partial pressure, suppresses interference and filtering by electric capacity C3, C4, by positive negative output
Port exports DC voltage respectively.
The utility model is exemplarily described above in conjunction with accompanying drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as employing changing for the various unsubstantialities that methodology and technical scheme of the present utility model are carried out
Enter, or it is not improved by it is of the present utility model design and technical scheme directly apply to other occasions, in the utility model
Protection domain within.
Claims (4)
1. single channel inputs positive and negative doubleway output power module of voltage regulation, it is characterised in that：The module includes input bleeder circuit, computing
Amplify mu balanced circuit and generating positive and negative voltage control output circuit, input the defeated of the output end of bleeder circuit and operation amplifier mu balanced circuit
Enter end connection, the output end of operation amplifier mu balanced circuit is connected with the input of generating positive and negative voltage control input circuit, is ensureing electricity
Pressure ensures the precision of voltage regulation on the premise of being separated into two groups of symmetrical positive-negative powers.
2. single channel according to claim 1 inputs positive and negative doubleway output power module of voltage regulation, it is characterised in that:Described is defeated
Entering bleeder circuit to be made up of electric capacity C1, C2 and resistance R1, R2, R3, R4, R5, R6, resistance R1, R2 series connection are even in parallel with electric capacity C1,
Resistance R3, R4, R5, R6 be together in series be linked into resistance R1 and R2 dividing point electric capacity C2 it is in parallel with resistance R5, R6；R1, R2 group
Into series resistance partial pressure optimized integration buck functionality, then symmetrical series resistance divider is formed by R3, R4, R5, R6 and accessed
Operational amplifier input in the same direction.
3. single channel according to claim 1 inputs positive and negative doubleway output power module of voltage regulation, it is characterised in that：Described fortune
Amplification mu balanced circuit is calculated using 1/2LM358 dual operational amplifiers, input LN (+) in the same direction and R4, R5 of operational amplifier
Dividing point connection, the Vcc of operational amplifier is linked into R1, R2 dividing point, output end Out and the GND company of operational amplifier
Connect and and be connected on LN (-), the Vee of operational amplifier is connected with Vin- and Vout- so that current potential between output end and dividing point
It is strict equal.
4. single channel according to claim 1 inputs positive and negative doubleway output power module of voltage regulation, it is characterised in that：It is described just
Negative voltage control output circuit is made up of electric capacity C3 and C4, and electric capacity C3, C4 are together in series, both ends connect respectively output end vo ut+ and
Vout-, electric capacity C3, C4 intermediate point meet GND, realize the filtering to exporting generating positive and negative voltage, suppress interference signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720430183.XU CN207039453U (en) | 2017-04-24 | 2017-04-24 | Single channel inputs positive and negative doubleway output power module of voltage regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720430183.XU CN207039453U (en) | 2017-04-24 | 2017-04-24 | Single channel inputs positive and negative doubleway output power module of voltage regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207039453U true CN207039453U (en) | 2018-02-23 |
Family
ID=61479157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720430183.XU Expired - Fee Related CN207039453U (en) | 2017-04-24 | 2017-04-24 | Single channel inputs positive and negative doubleway output power module of voltage regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207039453U (en) |
-
2017
- 2017-04-24 CN CN201720430183.XU patent/CN207039453U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20190424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |