CN204256575U - A kind of digital DC current regulator power supply - Google Patents
A kind of digital DC current regulator power supply Download PDFInfo
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- CN204256575U CN204256575U CN201420597272.XU CN201420597272U CN204256575U CN 204256575 U CN204256575 U CN 204256575U CN 201420597272 U CN201420597272 U CN 201420597272U CN 204256575 U CN204256575 U CN 204256575U
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Abstract
The utility model relates to a kind of digital DC current regulator power supply, comprise the power transformer, rectification circuit, filtering circuit and the mu balanced circuit that connect successively, described mu balanced circuit comprises setting sample circuit and sample circuit, and described sample circuit is used for sampling to voltage signal and current signal; The signal that described setting sample circuit arrives for amplifying sampling circuit samples, and the sampled signal of amplification is transported to single-chip microcomputer.The utility model can obtain stable output voltage and electric current.
Description
Technical field
The utility model relates to power technique fields, particularly relates to a kind of digital DC current regulator power supply.
Background technology
Society people enjoy the facility that electronic equipment brings greatly, but any electronic equipment has common circuit a--power circuit.Large to supercomputer, little of pocket calculator, all electronic equipments all must could normal work under the support of power circuit.Pattern, the complexity of these power circuits certain vary.The power-supply system of the power circuit of supercomputer inherently a set of complexity.By this cover power-supply system, supercomputer each several part can both obtain continually and steadily, meet the power supply supply of various complex specification.Can say that power circuit is the basis of all electronic equipments, not have power circuit would not have miscellaneous electronic equipment like this.
Most of stabilized voltage supply is analog power in the market, i.e. transformer frequency response, realized by iron core, coil, the number of turn of coil determines the voltage ratio at two ends, variation magnetic field is transmitted in the effect of iron core, and main coil creates the magnetic field of change under 50HZ frequency, and the magnetic field of this change is delivered to secondary coil by iron core, just induced voltage is created, so transformer just achieves the transformation of voltage in secondary coil.But this kind of power coil, iron core itself are conductors, so their can generate heat due to self inductance current (loss) in the process transforming voltage, so the efficiency of transformer is very low, generally can not more than 35%, and the large heaviness of volume.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of digital DC current regulator power supply, can obtain stable output voltage and electric current.
The utility model solves the technical scheme that its technical matters adopts: provide a kind of digital DC current regulator power supply, comprise the power transformer, rectification circuit, filtering circuit and the mu balanced circuit that connect successively, described mu balanced circuit comprises setting sample circuit and sample circuit, and described sample circuit is used for sampling to voltage signal and current signal; The signal that described setting sample circuit arrives for amplifying sampling circuit samples, and the sampled signal of amplification is transported to single-chip microcomputer.
Described voltage sampling circuit and current sampling circuit all adopt operational amplifier to realize.
Described setting sample circuit comprises voltage sets sample circuit and current settings sample circuit, described voltage sets sample circuit comprises the first operational amplifier, second pin of described first operational amplifier is held with connecing the reference of voltage sampling signal, three-prong connects the forward voltage end on voltage sampling signal relative reference ground, and the 6th pin is connected with the second pin by a resistance; Described current settings sample circuit comprises the second operational amplifier, and the second pin and the three-prong of described second operational amplifier all connect current sampling resistor, and the 6th pin is connected with the second pin by a resistance.
Beneficial effect
Owing to have employed above-mentioned technical scheme, the utility model compared with prior art, there is following advantage and good effect: the utility model can obtain stable output voltage and electric current, there is the characteristics such as high-effect, high precision, high stability, be mainly used in R&D institution, laboratory and electronics and produce use when line etc. needs efficient power test.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of output voltage and current sample control circuit in the present invention;
Fig. 2 is the circuit diagram of output voltage and current settings sampling control circuit in the present invention;
Fig. 3 is the circuit diagram of comparison amplifying circuit in the present invention and commutator tube.
Embodiment
Below in conjunction with specific embodiment, set forth the utility model further.Should be understood that these embodiments are only not used in restriction scope of the present utility model for illustration of the utility model.In addition should be understood that those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the utility model instruction.
Embodiment of the present utility model relates to a kind of digital DC current regulator power supply, comprise the power transformer, rectification circuit, filtering circuit and the mu balanced circuit that connect successively, described mu balanced circuit comprises setting sample circuit and sample circuit, and described sample circuit is used for sampling to voltage signal and current signal; The signal that described setting sample circuit arrives for amplifying sampling circuit samples, and the sampled signal of amplification is transported to single-chip microcomputer, single-chip microcomputer converts the analog voltage signal sampled and current signal to digital signal.
Reference voltage is designed to a numerical control reference voltage by the utility model, then mu balanced circuit just can form the stabilized voltage supply of a numerical control.This reference voltage is realized by the A/D conversion of single-chip microcomputer, compared and enlarged by dual operational amplifier LM358 and sampling voltage, output voltage is stablized by Correctional tube, and by the D/A of single-chip microcomputer conversion by sampled voltage, sample rate current convert output voltage electric current to and with numeral method out.
As shown in Figure 1, described sample circuit comprises voltage sampling circuit A and current sampling circuit B; The output signal of described voltage sampling circuit A is by obtaining reference voltage signal after Chip Microcomputer A/D conversion; The output signal of described current sampling circuit B is by obtaining reference current signal after Chip Microcomputer A/D conversion.Described voltage sampling circuit A and current sampling circuit B all adopts operational amplifier to realize.First pin of the operational amplifier of voltage sampling circuit A is by a resistance eutral grounding, and the second pin is connected with the 6th pin by a resistance, and three-prong meets the reference voltage terminal REF of setting.First pin of the operational amplifier of current sampling circuit B is by a resistance eutral grounding, and the second pin is connected with the 6th pin by a resistance, and three-prong meets the reference voltage terminal REF of setting.The reference voltage terminal REF of the voltage signal that voltage sampling circuit A, current sampling circuit B are sampled by sampling end and setting compares and then amplifies, and is input to single-chip microcomputer and processes after operational amplifier ICm6 filtering.
As shown in Figure 2, described setting sample circuit comprises voltage sets sample circuit C and current settings sample circuit D, described voltage sets sample circuit C comprises the first operational amplifier, second pin of described first operational amplifier connects VS-end (VS-end is the reference ground port of voltage sampling signal), three-prong connects VS+ end (VS+ end is the forward voltage port on voltage sampling signal relative reference ground), and the 6th pin is connected with the second pin by a resistance; Described current settings sample circuit D comprises the second operational amplifier, second pin of described second operational amplifier connects RS-end (RS-end is current sampling resistor), three-prong connects RS+ end (RS+ end is current sampling resistor), and the 6th pin is connected with the second pin by a resistance.The voltage signal that the voltage signal of sample circuit exports by VS+ and VS-(being connected to the positive and negative two ends of output voltage) sampling amplifies through voltage sets sample circuit C, is input to single-chip microcomputer and carries out A/D conversion; Data after process are shown on charactron; The voltage signal that current signal is exported by sampling resistor (being connected to RS two ends) sampling amplifies through current settings sample circuit D, is input to single-chip microcomputer and carries out A/D conversion; Data after process are shown on charactron.
As shown in Figure 3, the described output terminal comparing amplifying circuit is also connected with Correctional tube, and described Correctional tube is for stablizing the described output signal comparing amplifying circuit.Can by various electrical signal (voltage, current sampling signal by sampling; Keyboard to set up signal) be input to MCU and carry out analyzing and processing, obtain required electric parameter, eventually pass numeral method and go out various electrical parameter, facilitate client's adjustment in use.
Claims (3)
1. a digital DC current regulator power supply, comprise the power transformer, rectification circuit, filtering circuit and the mu balanced circuit that connect successively, it is characterized in that, described mu balanced circuit comprises setting sample circuit and sample circuit, and described sample circuit is used for sampling to voltage signal and current signal; The signal that described setting sample circuit arrives for amplifying sampling circuit samples, and the sampled signal of amplification is transported to single-chip microcomputer.
2. digital DC current regulator power supply according to claim 1, is characterized in that, described voltage sampling circuit and current sampling circuit all adopt operational amplifier to realize.
3. digital DC current regulator power supply according to claim 1, it is characterized in that, described setting sample circuit comprises voltage sets sample circuit and current settings sample circuit, described voltage sets sample circuit comprises the first operational amplifier, second pin of described first operational amplifier is held with connecing the reference of voltage sampling signal, three-prong connects the forward voltage end on voltage sampling signal relative reference ground, and the 6th pin is connected with the second pin by a resistance; Described current settings sample circuit comprises the second operational amplifier, and the second pin and the three-prong of described second operational amplifier all connect current sampling resistor, and the 6th pin is connected with the second pin by a resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597272.XU CN204256575U (en) | 2014-10-16 | 2014-10-16 | A kind of digital DC current regulator power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597272.XU CN204256575U (en) | 2014-10-16 | 2014-10-16 | A kind of digital DC current regulator power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204256575U true CN204256575U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420597272.XU Expired - Fee Related CN204256575U (en) | 2014-10-16 | 2014-10-16 | A kind of digital DC current regulator power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204256575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687956A (en) * | 2019-08-23 | 2020-01-14 | 深圳市精泰达科技有限公司 | Programmable output power module |
-
2014
- 2014-10-16 CN CN201420597272.XU patent/CN204256575U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687956A (en) * | 2019-08-23 | 2020-01-14 | 深圳市精泰达科技有限公司 | Programmable output power module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20161016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |