CN206075182U - A kind of DC current stabilized power supply - Google Patents
A kind of DC current stabilized power supply Download PDFInfo
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- CN206075182U CN206075182U CN201620957076.8U CN201620957076U CN206075182U CN 206075182 U CN206075182 U CN 206075182U CN 201620957076 U CN201620957076 U CN 201620957076U CN 206075182 U CN206075182 U CN 206075182U
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- power supply
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Abstract
The utility model discloses a kind of DC current stabilized power supply, including power module, it is characterised in that：Also include controller, D/A converter, V/I modular converters and load, described controller is connected with D/A converter, described power module is connected with D/A converter, and described D/A converter is connected with V/I modular converters, and described V/I modular converters are connected with load.Advantage of the present utility model be simple structure, it is economical and practical, DC source output current value can accurately stepping, reliable and stable, easy to operate, high precision, output area width.
Description
Technical field
This utility model designs a kind of power supply, more particularly to a kind of DC current stabilized power supply.
Background technology
In household electrical appliance and other kinds electronic equipment, generally it is required for the DC source of voltage stabilization to power.But
In real life, powered by the AC network of 220V, needs change exchange for direct current.Traditional DC current stabilized power supply is generally adopted
The regulation of electric current is realized with potentiometer and band switch, and by the size of ammeter indicator current value.Therefore, the adjustment of electric current
Precision is not high, and reading owes directly perceived, and potentiometer is also easy to wear.At present, commercially available DC current stabilized power supply product category is less, price is held high
It is expensive, and most DC current stabilized power supplies can not meet boat in the index of the aspects such as precision, range of accommodation, thermostability, controllability
My god, chemical industry, the demand of many practical applications in field such as measurement.How to obtain high accuracy, low ripple, wide scope, stably may be used
By, easy to operate DC current stabilized power supply, extensive attention is received.At present in terms of power electronic devices, it is nearly all rotation
Knob switch-mode regulation electric current, degree of regulation be not high, and the normal saltus steps of Jing, using trouble.
Utility model content
The purpose of this utility model is for defect of the prior art, there is provided a kind of easy to control, economical and practical is straight
Stream stabilized current supply.
In order to achieve the above object, the technical solution of the utility model is as follows：
This utility model includes power module, controller, D/A converter, V/I modular converters and load, described control
Device is connected with D/A converter, and described power module is connected with D/A converter, described D/A converter and V/I modular converters
Connection, described V/I modular converters are connected with load.
The described outfan of V/I modular converters is connected with the input of A/D converter, described A/D converter it is defeated
Go out end to be connected with controller.
Described controller is connected with display.
Described controller is connected with key circuit.
Described V/I modular converters include the first amplifier, the second amplifier, audion Q1 and audion Q2, and described D/A turns
Parallel operation outfan is connected with the end in the same direction of the first amplifier, and the backward end of the first described amplifier is defeated with the first amplifier by resistance
Go out end connection, the described outfan of the first amplifier is connected with the end in the same direction of the second amplifier, the outfan of described the second amplifier
It is connected with the base stage of audion Q2, the colelctor electrode of described audion Q2 is connected with the colelctor electrode of audion Q1, three described poles
The emitter stage of pipe Q2 is connected with the base stage of audion Q1, and the described emitter stage of audion Q1 and the backward end of the second amplifier connect
Connect, the colelctor electrode of described audion Q1 is connected with load.
Described controller is single-chip microcomputer.Model AT89S52. of described single-chip microcomputer
Advantage of the present utility model be simple structure, it is economical and practical, DC source output current value can accurately stepping, surely
It is fixed reliable, easy to operate, high precision, output area width.
Description of the drawings
Fig. 1 is the structured flowchart of stabilized current supply of the present utility model
Fig. 2 implements circuit diagram for V/I modular converters of the present utility model.
Reference in figure is respectively：1. power module；2.D/A transducers；3.V/I conversion modules；4. load；5. control
Device processed；6.A/D transducers；7. key circuit；8. display.
Specific embodiment
This utility model is described further below in conjunction with accompanying drawing.
Such as Fig. 1, in this utility model, the output signal of telecommunication Jing of power module 1 D/A converters 2 transmit signals to V/I conversions
Module 3, the burning voltage needed for V/I conversion modules 3 are exported extremely load 4.The input of D/A converter 2 is connected with controller 5,
Receive the control signal of controller 5.The outfan of V/I modular converters 3 is connected with the input of A/D converter 6, A/D converter 6
Outfan be connected with controller 5.Controller 5 is connected with key circuit 7, can send control information to controller 5, controller
5 connection display 8 can send the signal of telecommunication of output to controller 5 Jing after A/D conversions, and controller 5 is electric by actual output
Flow valuve is converted to digital quantity, is shown by display 8, reach the purpose of monitor in real time output current value after the process of via controller 5.
Controller 5 is single-chip microcomputer, model AT89S52, and D/A converter 2 and 6 model of A/D converter are respectively TLC5615
And TLC2543.More than need chip that power supply powers and module to be powered by power module, be not drawn in figure.Single-chip microcomputer work
The minimum system of work and the necessary peripheral circuit that works are that general knowledge known in this field is not described here.With regard to button electricity
Road, here using six serial ports of P1.2 to P1.7 of single-chip microcomputer, each serial ports connects a button, and six I/O mouths are used as enumerator,
Six I/O mouths are scanned by single-chip microcomputer internal processes, when one of I/O messages number are jumped by 1 writes and directs 0, are carried out
Corresponding plus-minus number function.
Mcu resource distributes：
This partial circuit mainly constitutes K1 by six press keys, and K2, K3, K4, K5, K6 key, wherein K1 keys are "+" key, are realized
Power supply presses the function that 0.1mA is incremented by, and K3 keys are "+" key, realizes the function that power supply is incremented by by 1mA, and K5 keys are "+" key, realize electricity
The function that 10mA is incremented by is pressed in source, often will be increased on the basis of upper output valve once by output current next time；K2 keys are "-"
Key, realizes the function that power supply is reduced by 0.1mA, and K4 keys are "-" key, realizes the function that power supply is reduced by 1mA, and K6 keys are "-" key,
The function that power supply is reduced by 10mA is realized, often will be reduced on the basis of upper output valve once by output current next time.On
Single Chip Microcomputer (SCM) program needed for the realization of the case circuit function described in face is known in the art general knowledge, and its program is in existing public affairs
Can find in open file, and introduce for key circuit has in the rudimentary knowledge of single-chip microcomputer, belong to single-chip microcomputer basis
Knowledge, here, key circuit is not described in detail.
As shown in Fig. 2 V/I modular converters 3 include the first amplifier, the second amplifier, audion Q1 and audion Q2, power supply mould
Block exports the end in the same direction of the input of+1.25V voltage signals to D/A converter, D/A converter outfan and the first amplifier and connects
Connect, the backward end of the first amplifier is connected with the outfan of the first amplifier by resistance R3 respectively, be grounded by resistance R1.First
The outfan of amplifier is connected with the end in the same direction of the second amplifier, and the outfan of the second amplifier is connected with the base stage of audion Q2, three poles
The colelctor electrode of pipe Q2 is connected with the colelctor electrode of audion Q1, and the emitter stage of audion Q2 is connected with the base stage of audion Q1, three poles
The emitter stage of pipe Q1 is connected with the backward end of the second amplifier, is connect by resistance R2 with the backward end of the second amplifier in audion Q1
Ground, the colelctor electrode of audion Q1 are connected with load.Digital quantity is converted into D/A converter analog voltage in proportion, is then passed through
Burning voltage needed for the output of V/I modular converter the regulation of electrical circuit output stage.Reference electricity of the burning voltage of output as constant-current source
Pressure, operational amplifier constitute voltage follower with transistor.Constant current output is obtained using the flat output characteristics of transistor.
As follower is a kind of voltage negative feedback circuit of depth, therefore current source has preferable stability.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that this utility model is implemented not by above-mentioned
The restriction of mode, if the improvement of the various unsubstantialities that technical solutions of the utility model are carried out is employed, or not improved general
The design and technical scheme of the present invention directly applies to other occasions, within protection domain of the present utility model.
Claims (6)
1. a kind of DC current stabilized power supply, including power module (1), it is characterised in that：Also include controller (5), D/A converter
(2), V/I modular converters (3) and load (4), described controller (5) are connected with D/A converter (2), described power module
(1) it is connected with D/A converter (2), described D/A converter (2) is connected with V/I modular converters (3), described V/I moduluss of conversion
Block (3) is connected with load (4).
2. a kind of DC current stabilized power supply as claimed in claim 1, it is characterised in that：The output of described V/I modular converters (3)
End is connected with the input of A/D converter (6), and the outfan of described A/D converter (6) is connected with controller (5).
3. a kind of DC current stabilized power supply as claimed in claim 2, it is characterised in that：Described controller (5) and display (8)
Connection.
4. a kind of DC current stabilized power supply as claimed in claim 1, it is characterised in that：Described controller (5) and key circuit
(7) connect.
5. a kind of DC current stabilized power supply as claimed in claim 1, it is characterised in that：Described V/I modular converters (3) include
The end in the same direction of one amplifier, the second amplifier, audion Q1 and audion Q2, described D/A converter (2) outfan and the first amplifier
Connection, the backward end of the first described amplifier is connected with the outfan of the first amplifier by resistance, described the first amplifier it is defeated
Go out end to be connected with the end in the same direction of the second amplifier, the outfan of the second described amplifier is connected with the base stage of audion Q2, described
The colelctor electrode of audion Q2 is connected with the colelctor electrode of audion Q1, the emitter stage of described audion Q2 and the base stage of audion Q1
Connection, the emitter stage of described audion Q1 is connected with the backward end of the second amplifier, the colelctor electrode of described audion Q1 with bear
Carry (4) connection.
6. a kind of DC current stabilized power supply as claimed in claim 1, it is characterised in that：Described controller (5) is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620957076.8U CN206075182U (en) | 2016-08-26 | 2016-08-26 | A kind of DC current stabilized power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620957076.8U CN206075182U (en) | 2016-08-26 | 2016-08-26 | A kind of DC current stabilized power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206075182U true CN206075182U (en) | 2017-04-05 |
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ID=58432756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620957076.8U Active CN206075182U (en) | 2016-08-26 | 2016-08-26 | A kind of DC current stabilized power supply |
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| CN (1) | CN206075182U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831158A (en) * | 2019-03-08 | 2019-05-31 | 信阳师范学院 | Use for laboratory perovskite solar battery MPPT maximum power point tracking test macro |
-
2016
- 2016-08-26 CN CN201620957076.8U patent/CN206075182U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831158A (en) * | 2019-03-08 | 2019-05-31 | 信阳师范学院 | Use for laboratory perovskite solar battery MPPT maximum power point tracking test macro |
| CN109831158B (en) * | 2019-03-08 | 2020-03-31 | 信阳师范学院 | Maximum power point tracking test system for perovskite solar cell for laboratory |
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