CN208128142U - A kind of high precision electro source circuit - Google Patents
A kind of high precision electro source circuit Download PDFInfo
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- CN208128142U CN208128142U CN201820602724.7U CN201820602724U CN208128142U CN 208128142 U CN208128142 U CN 208128142U CN 201820602724 U CN201820602724 U CN 201820602724U CN 208128142 U CN208128142 U CN 208128142U
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Abstract
The utility model discloses a kind of high precision electro source circuits, including rectification filtering module, low temperature ticket Voltage stabilizing module, compare adjustment module and output filter module, the rectified filter module of electric main exports direct current to low temperature ticket Voltage stabilizing module after being rectified and being filtered, direct current is subjected to after accurate steady pressure treatment outputting reference voltage to comparing adjustment module by the low temperature ticket Voltage stabilizing module, the relatively adjustment module is compared after adjustment pressure stabilizing according to the reference voltage of input and exports first voltage to output filter module, second voltage is exported after being filtered by the output filter module to late-class circuit.Exportable high-precision, low ripple, low temperature ticket and continuously adjustable voltage power to load circuit to load circuit, meet the requirement that such as simulation lithium battery carries out calibration calibration.
Description
Technical field
The utility model relates to electronic technology field, in particular to a kind of high precision electro source circuit.
Background technique
Currently, common power circuit generally carried out using common Zener diode or three terminal regulator it is defeated after pressure stabilizing
Out, but utilize the linear regulation efficiency of the power circuit of common Zener diode or three terminal regulator lower, precision is not high,
And height is required to prime ripple, it is answered in such as simulation lithium battery calibration calibration, high precision measuring instrument power supply or calibration source etc.
With in occasion, precision is obviously inadequate, is not able to satisfy requirement.
Thus the prior art could be improved and improve.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of high-precision power electricity
Road, exportable high-precision, low ripple, low temperature ticket and continuously adjustable voltage.
In order to achieve the above object, the utility model takes following technical scheme：
A kind of high precision electro source circuit, including rectification filtering module, low temperature ticket Voltage stabilizing module, compare adjustment module and output
Filter module, the rectified filter module of electric main export direct current to low temperature ticket pressure stabilizing mould after being rectified and being filtered
Block, outputting reference voltage value compares adjustment module after direct current is carried out accurate steady pressure treatment by the low temperature ticket Voltage stabilizing module,
The relatively adjustment module is compared after adjustment pressure stabilizing according to the reference voltage of input exports first voltage to output filtering mould
Block exports second voltage to late-class circuit after being filtered by the output filter module.
In the high precision electro source circuit, the rectification filtering module includes rectifier bridge, first capacitor and the second capacitor,
The firewire of the 2nd end connection electric main of the rectifier bridge, one end of the 1st end connection first capacitor of the rectifier bridge, second
One end of capacitor, low temperature ticket Voltage stabilizing module and compare adjustment module, the firewire of the 3rd end connection electric main of the rectifier bridge,
The 4th end, the other end of first capacitor and the other end of the second capacitor of the rectifier bridge are grounded.
In the high precision electro source circuit, the low temperature ticket Voltage stabilizing module includes first resistor, benchmark device and third
Capacitor, the one end at the 1st end and first resistor of the 3rd foot connection rectifier bridge of the benchmark device, the 1st foot of the benchmark device
Connect the other end of first resistor, third capacitor one end and compare adjustment module, the 2nd foot of the benchmark device, the 4th foot and
The other end of first capacitor is grounded.
In the high precision electro source circuit, the relatively adjustment module includes second resistance, 3rd resistor, the 4th electricity
One end of resistance, the 5th resistance, potentiometer, the 4th capacitor, voltage comparator and metal-oxide-semiconductor, the second resistance connects benchmark device
The 1st foot, one end of the other end connection potentiometer of the second resistance, the other end connection 3rd resistor of the potentiometer
One end, the slide plate of the potentiometer connect one end of the 4th capacitor and the 3rd foot of voltage comparator, and the of the voltage comparator
1 foot connects output filter module, the 1st foot and metal-oxide-semiconductor of the 5th foot connection rectifier bridge of the voltage comparator by the 4th resistance
Source electrode, the 4th foot of the voltage comparator connects the grid of metal-oxide-semiconductor by the 5th resistance, and the drain electrode connection of the metal-oxide-semiconductor is defeated
2nd foot of filter module out, the other end of the 3rd resistor, the other end of the 4th capacitor and voltage comparator is grounded.
In the high precision electro source circuit, the output filter module includes the 6th resistance, the 5th capacitor and the 6th electricity
Hold, one end connection drain electrode of metal-oxide-semiconductor, one end of the 5th capacitor, one end of the 6th capacitor and the power supply output of the 6th resistance
End, also by the 1st foot of the 4th resistance connection voltage comparator, the other end of the other end of the 6th resistance, the 5th capacitor
It is grounded with the other end of the 6th capacitor.
In the high precision electro source circuit, the model LM399 of the benchmark device.
Compared to the prior art, high precision electro source circuit provided by the utility model, including rectification filtering module, low temperature ticket
Voltage stabilizing module, compare adjustment module and output filter module, the rectified filter module of electric main rectified and be filtered
Output direct current, will be defeated after the accurate steady pressure treatment of direct current progress by the low temperature ticket Voltage stabilizing module to low temperature ticket Voltage stabilizing module afterwards
Reference voltage is to comparing adjustment module out, after the relatively adjustment module is compared adjustment pressure stabilizing according to the reference voltage of input
First voltage is exported to output filter module, second voltage is exported after being filtered by the output filter module to rear class
Circuit.Exportable high-precision, low ripple, low temperature ticket and continuously adjustable voltage are powered to load circuit, are met to load circuit
Such as simulate the requirement that lithium battery carries out calibration calibration.
Detailed description of the invention
Fig. 1 is the schematic diagram of high precision electro source circuit provided by the utility model.
Specific embodiment
The utility model provides a kind of schematic diagram of high precision electro source circuit, to make the purpose of this utility model, technical side
Case and effect are clearer, clear, and the utility model is further described as follows in conjunction with drawings and embodiments.It should manage
Solution, specific embodiment described herein only to explain the utility model, are not used to limit the utility model.
Referring to Fig. 1, high precision electro source circuit provided by the utility model, including rectification filtering module 10, low temperature ticket are steady
Die block 20 compares adjustment module 30 and output filter module 40, the rectification filtering module 10, low temperature ticket Voltage stabilizing module 20,
Compare adjustment module 30 and output filter module 40 is sequentially connected.
Specifically, the rectification filtering module 10 is for exporting direct current after electric main is rectified and is filtered
Electricity is to low temperature ticket Voltage stabilizing module 20；The low temperature ticket Voltage stabilizing module 20 be used to carry out direct current to export after accurate steady pressure treatment to
Compare adjustment module 30；The relatively adjustment module 30 according to the reference voltage that low temperature ticket Voltage stabilizing module 20 exports for being compared
Compared with output voltage after adjustment to output filter module 40；The output filter module 40 be used for compare adjustment module 30 export
Voltage is powered after being filtered to late-class circuit, and the late-class circuit can be the existing circuits such as load, lithium battery, this
Utility model is not construed as limiting this, is no longer described in greater detail herein.
In other words, direct current is exported after the rectified filter module 10 of electric main is rectified and is filtered to low temperature
Ticket Voltage stabilizing module 20, by the low temperature ticket Voltage stabilizing module 20 by direct current carry out after accurate steady pressure treatment outputting reference voltage to than
Compared with adjustment module 30, the relatively adjustment module 30 is compared after adjustment pressure stabilizing according to the reference voltage of input exports the first electricity
It is depressed into output filter module 40, second voltage is exported after being filtered by the output filter module 40 to late-class circuit.
The utility model exportable high-precision, low ripple, low temperature ticket and continuously may be used by setting low temperature ticket Voltage stabilizing module 20
The voltage of tune powers to load circuit to load circuit, meets the requirement that such as simulation lithium battery carries out calibration calibration.
Please continue to refer to Fig. 1, rectification filtering module 10 includes rectifier bridge D1, first capacitor C1 and the second capacitor C2, described
One end of the 1st end connection first capacitor C1 of the firewire L of the 2nd end connection electric main of rectifier bridge D1, the rectifier bridge D1, the
One end of two capacitor C2, low temperature ticket Voltage stabilizing module 20 and compare adjustment module 30, the 3rd end connection exchange city of the rectifier bridge D1
The 4th end of firewire N, the rectifier bridge D1 of electricity, the other end of first capacitor C1 and the other end of the second capacitor C2 be grounded.
Specifically, the rectifier bridge D1 is full-bridge rectification, described for the electric main of input to be converted to direct current
First capacitor C1 and the second capacitor C2 is filter capacitor, for being filtered to direct current.
Please continue to refer to Fig. 1, the low temperature ticket Voltage stabilizing module 20 includes first resistor R1, benchmark device U1 and third capacitor
The one end at the 1st end and first resistor R1 of the 3rd foot connection rectifier bridge D1 of C3, the benchmark device U1, the benchmark device U1
The 1st foot connection other end of first resistor R1, third capacitor C3 one end and compare adjustment module 30, the benchmark device U1
The 2nd foot, the 4th foot and first capacitor C1 the other end be grounded.
Specifically, within the scope of rated operational current, precision (deviation of voltage value, drift of the benchmark device U1
The index parameters such as shifting, current regulation) it to be significantly better than common Zener diode regulator or three terminal regulator, it is low temperature ticket
Voltage reference device can generate and stablize and high-precision reference voltage so that the voltage of entire circuit output be high-precision, it is low
The voltage of warm ticket meets the requirement that such as simulation lithium battery carries out calibration calibration, it is preferred that the model of the benchmark device
For LM399, there is low temperature ticket, high-precision effect, certainly in other embodiments, the benchmark device also can be used other
The benchmark device of model, the utility model are not construed as limiting this.
Please continue to refer to Fig. 1, it is described relatively adjustment module 30 include second resistance R2,3rd resistor R3, the 4th resistance R4,
5th resistance R5, potentiometer R6, the 4th capacitor C4, voltage comparator U2 and metal-oxide-semiconductor Q1, one end connection of the second resistance R2
The 1st foot of benchmark device U1, one end of the other end connection potentiometer R6 of the second resistance R2, the potentiometer R6's is another
One end of end connection 3rd resistor R3, the slide plate of the potentiometer R6 connect one end and the voltage comparator U2 of the 4th capacitor C4
1st foot of the 3rd foot, the voltage comparator U2 passes through the 4th resistance R4 connection output filter module 40, the voltage comparator
The source electrode of the 1st foot and metal-oxide-semiconductor Q1 of the 5th foot connection rectifier bridge D1 of U2, the 4th foot of the voltage comparator U2 pass through the 5th electricity
The grid of R5 connection metal-oxide-semiconductor Q1 is hindered, the drain electrode of the metal-oxide-semiconductor Q1 connects output filter module 40, and the 3rd resistor R3's is another
2nd foot of one end, the other end of the 4th capacitor C4 and voltage comparator U2 is grounded.
Specifically, the voltage of the benchmark device U1 output is through second resistance R2,3rd resistor R3 and potentiometer R6 tune
The homophase input for saving voltage comparator U2 is made comparisons with the 4th resistance R4 output negative-feedback, and the conducting situation for controlling metal-oxide-semiconductor Q1 is real
Existing pressure stabilizing output.
Please continue to refer to Fig. 1, the output filter module 40 includes the 6th resistance R7, the 5th capacitor C5 and the 6th capacitor
C6, the 6th resistance R7 one end connection the drain electrode of metal-oxide-semiconductor Q1, one end of the 5th capacitor C5, the 6th capacitor C6 one end and
Power output end, also by the 1st foot of the 4th resistance R4 connection voltage comparator U2, the other end of the 6th resistance R6,
The other end of five capacitor C5 and the other end of the 6th capacitor C6 are grounded.
Specifically, the 6th resistance R6 is load resistance, out-put supply that can be stable when guaranteeing unloaded, the described 5th
Capacitor C5 and the 6th capacitor C6 is output filter capacitor, guarantees the steady of output voltage, to provide stable, low ripple output
Voltage.
In conclusion high precision electro source circuit provided by the utility model, including rectification filtering module, low temperature ticket pressure stabilizing mould
Block, compare adjustment module and output filter module, the rectified filter module of electric main rectified and exported after being filtered
Direct current is carried out outputting reference after accurate steady pressure treatment to low temperature ticket Voltage stabilizing module, by the low temperature ticket Voltage stabilizing module by direct current
For voltage to comparing adjustment module, the relatively adjustment module is compared after adjustment pressure stabilizing according to the reference voltage of input exports the
One voltage exports second voltage to late-class circuit to output filter module after being filtered by the output filter module.
The utility model is by setting low temperature ticket Voltage stabilizing module, and exportable high-precision, low ripple, low temperature ticket and continuously adjustable voltage are extremely
Load circuit is powered to load circuit, meets the requirement that such as simulation lithium battery carries out calibration calibration.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to appended by the utility model
Scope of protection of the claims.
Claims (6)
1. a kind of high precision electro source circuit, which is characterized in that including rectification filtering module, low temperature ticket Voltage stabilizing module, compare adjustment
Module and output filter module, the rectified filter module of electric main export direct current to low temperature after being rectified and being filtered
Direct current is carried out after accurate steady pressure treatment outputting reference voltage by the low temperature ticket Voltage stabilizing module and adjusted to comparing by ticket Voltage stabilizing module
Mould preparation block, output first voltage extremely exports after the relatively adjustment module is compared adjustment pressure stabilizing according to the reference voltage of input
Filter module exports second voltage to late-class circuit after being filtered by the output filter module.
2. high precision electro source circuit according to claim 1, which is characterized in that the rectification filtering module includes rectification
Bridge, first capacitor and the second capacitor, the firewire of the 2nd end connection electric main of the rectifier bridge, the 1st end of the rectifier bridge connects
It connects one end of first capacitor, one end of the second capacitor, low temperature ticket Voltage stabilizing module and compares adjustment module, the 3rd of the rectifier bridge the
The firewire of end connection electric main, the 4th end of the rectifier bridge, the other end of first capacitor and the second capacitor the other end it is equal
Ground connection.
3. high precision electro source circuit according to claim 2, which is characterized in that the low temperature ticket Voltage stabilizing module includes first
Resistance, benchmark device and third capacitor, the one end at the 1st end and first resistor of the 3rd foot connection rectifier bridge of the benchmark device,
The 1st foot connection other end of first resistor of the benchmark device, one end of third capacitor and compare adjustment module, the benchmark
The other end of 2nd foot of device, the 4th foot and first capacitor is grounded.
4. high precision electro source circuit according to claim 3, which is characterized in that the relatively adjustment module includes the second electricity
Resistance, 3rd resistor, the 4th resistance, the 5th resistance, potentiometer, the 4th capacitor, voltage comparator and metal-oxide-semiconductor, the second resistance
One end connection benchmark device the 1st foot, the second resistance the other end connection potentiometer one end, the potentiometer it is another
One end connects one end of 3rd resistor, and the slide plate of the potentiometer connects one end of the 4th capacitor and the 3rd foot of voltage comparator,
1st foot of the voltage comparator connects output filter module by the 4th resistance, and the 5th foot connection of the voltage comparator is whole
The source electrode of the 1st foot and metal-oxide-semiconductor of bridge is flowed, the 4th foot of the voltage comparator connects the grid of metal-oxide-semiconductor, institute by the 5th resistance
The drain electrode connection output filter module of metal-oxide-semiconductor is stated, the other end of the 3rd resistor, the other end of the 4th capacitor and voltage compare
2nd foot of device is grounded.
5. high precision electro source circuit according to claim 4, which is characterized in that the output filter module includes the 6th electricity
Resistance, the 5th capacitor and the 6th capacitor, the drain electrode of one end connection metal-oxide-semiconductor of the 6th resistance, one end of the 5th capacitor, the 6th electricity
One end of appearance connects the 1st foot of voltage comparator with power output end, also by the 4th resistance, the 6th resistance it is another
The other end at end, the other end of the 5th capacitor and the 6th capacitor is grounded.
6. high precision electro source circuit according to claim 5, which is characterized in that the model LM399 of the benchmark device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820602724.7U CN208128142U (en) | 2018-04-26 | 2018-04-26 | A kind of high precision electro source circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820602724.7U CN208128142U (en) | 2018-04-26 | 2018-04-26 | A kind of high precision electro source circuit |
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| CN208128142U true CN208128142U (en) | 2018-11-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546880A (en) * | 2018-12-19 | 2019-03-29 | 北京雪迪龙科技股份有限公司 | A kind of adjustable direct current of output voltage delivers current circuit |
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2018
- 2018-04-26 CN CN201820602724.7U patent/CN208128142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546880A (en) * | 2018-12-19 | 2019-03-29 | 北京雪迪龙科技股份有限公司 | A kind of adjustable direct current of output voltage delivers current circuit |
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