CN207098963U - A kind of DC voltage and current signal generator - Google Patents
A kind of DC voltage and current signal generator Download PDFInfo
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- CN207098963U CN207098963U CN201720661507.0U CN201720661507U CN207098963U CN 207098963 U CN207098963 U CN 207098963U CN 201720661507 U CN201720661507 U CN 201720661507U CN 207098963 U CN207098963 U CN 207098963U
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- 239000003990 capacitor Substances 0.000 claims description 9
- 238000010276 construction Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
A kind of DC voltage and current signal generator, including dc source, current signal output unit and voltage signal output unit, the current signal output unit includes ammeter, rheostat, current-limiting resistance and two current signal output ends, rheostat and current-limiting resistance, which are connected in series, to be followed by between the positive pole of dc source and the first current signal output end, and ammeter is connected between the negative pole of dc source and the second current signal output end；The voltage signal output unit includes voltmeter, potentiometer and two voltage signal output end, the indirect direct current power source voltage of two fixing ends of the potentiometer, two voltage signal output end connect the sliding end and DC power anode of potentiometer respectively, and the voltmeter is connected between two voltage signal output end.The utility model can not only export steady dc voltage or current signal, and simple in construction, easy to operate, dependable performance, can improve the debugging efficiency of equipment, reduce labor strength.
Description
Technical field
The utility model is related to it is a kind of used when being debugged or being detected to equipment, can export as needed stable straight
The device of voltage or DC current signal is flowed, belongs to detection technique field.
Background technology
With the development of modern industry, in electronic engineering, automatically control, the technology neck such as communication engineering, instrument and computer
Domain, control element is often using DC current or DC voltage as control signal, to realize the accurate control to controlled device.With
Integrated circuit and sensor technology develop rapidly, the output signal of modern sensor there are many variable DC current or
D. c. voltage signal, to realize to measured Precise Representation.When carrying out debugging detection to equipment, it is often necessary to use direct current
Current Voltage generator replaces control element or sensor to carry out short-term operation, to judge and control element or sensor phase
Even circuit whether normal operation.But due to that currently without special DC voltage and current signal generator, can only use existing
Instrument and meter build temporarily, the debugging and detection to equipment cause great inconvenience, greatly reduce equipment debugging and
Detection efficiency, add the labor intensity of worker.
Utility model content
The purpose of this utility model is the drawback for prior art, there is provided a kind of DC voltage and current signal occurs
Device, to improve the debugging of equipment and detection efficiency, reduce the labor intensity of worker.
Problem described in the utility model is realized with following technical proposals：
A kind of DC voltage and current signal generator, composition include dc source, current signal output unit and voltage
Signal output unit, the current signal output unit include ammeter, rheostat, current-limiting resistance and two current signal outputs
Terminal, the rheostat and current-limiting resistance be connected in series be followed by the positive pole of dc source and the first current signal output end it
Between, the ammeter is connected between the negative pole of dc source and the second current signal output end；The voltage signal output is single
Member includes voltmeter, potentiometer and two voltage signal output end, the indirect direct current of two fixing ends of the potentiometer
The output voltage in source, two voltage signal output end connect the sliding end of potentiometer and the positive pole of dc source, the electricity respectively
Pressure table is connected between two voltage signal output end.
Above-mentioned DC voltage and current signal generator, the dc source include transformer, rectifier bridge and three terminal regulator,
The primary coil of the transformer is connected with AC power, and secondary coil connects the ac input end of rectifier bridge, the three-terminal voltage-stabilizing
The DC output end of the input termination rectifier bridge of device, output termination current signal output unit and voltage signal output unit.
Above-mentioned DC voltage and current signal generator, the ammeter and voltmeter are digital instrument and are provided with common
Power supply unit, said supply unit include upper divider resistance and lower divider resistance, and the output voltage of three terminal regulator is by upper partial pressure
Resistance and the feeder ear that ammeter and voltmeter are accessed after lower divider resistance partial pressure.
Above-mentioned DC voltage and current signal generator, the output end of the rectifier bridge and three terminal regulator are equipped with filtered electrical
Hold.
Above-mentioned DC voltage and current signal generator, fusing is provided between the primary coil and AC power of the transformer
Device and power switch.
The utility model is adjusted output voltage with potentiometer, can not only exported steady using rheostat regulation output current
Fixed DC voltage or current signal, and there is simple in construction, easy to operate, dependable performance, it is greatly improved and sets
Standby debugging and detection efficiency, reduce the labor intensity of worker.
Brief description of the drawings
Fig. 1 is electrical schematic diagram of the present utility model.
In figure respectively marked as：U1, three terminal regulator, FU, fuse, S, power switch, T, transformer, ZQ, rectifier bridge,
C1, the first filter capacitor, C2, the second filter capacitor, A, ammeter, V, voltmeter, W, potentiometer, R1, rheostat, R2, current limliting
Resistance, R3, upper divider resistance, R4, lower divider resistance.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Referring to Fig. 1, the utility model mainly includes three terminal regulator U1, transformer T, rectifier bridge ZQ, the first filter capacitor
C1, the second filter capacitor C2, ammeter A, voltmeter V, potentiometer W, rheostat R1, current-limiting resistance R2, upper divider resistance R3 and
Lower divider resistance R4.Wherein, three terminal regulator U1, transformer T, rectifier bridge ZQ, the first filter capacitor C1 and the second filter capacitor
C2 forms dc source；Voltmeter V and potentiometer W forms voltage signal output unit；Ammeter A, rheostat R1 and current limliting electricity
Hinder R2 and form current signal output unit.
Three terminal regulator U1 is one of core devices of dc source, and the integrated circuit only has three pins, is defeated respectively
Enter end, earth terminal and output end, the peripheral cell needed for it is few, also has excessively stream, overheat and the protection for adjusting pipe inside circuit
Circuit, uses reliable, conveniently, and cost is low.Maximum output current 1.5A, output voltage 15V.Transformer T is
220V becomes 8V transformer, and rectifier bridge ZQ is formed by connecting by four IN4007 commutation diodes.Ammeter A and voltmeter V selections
The digital instrument of compact, its measurement accuracy is high, and dependable performance, working power is DC 5V, to the less demanding of working environment
And install simple and convenient.
Transformer T and rectifier bridge ZQ becomes 220V AC voltage the 9.6V DC voltages of fluctuation, then by three-terminal voltage-stabilizing
Device U1（Model 7805）, the first filter capacitor C1 and the second filter capacitor C2 is filtered to it and voltage stabilizing, export stable
15V DC voltages.The DC voltage is through rheostat R1（RV1701S）It is added in current-limiting resistance R2 on external circuit, output amplitude can
The current signal of tune, current value adjustable extent is 0-30mA.The DC voltage of three terminal regulator U1 outputs can also pass through current potential
It is added in after device W decompressions on external circuit, the adjustable voltage signal of output amplitude, voltage adjustable extent is 0-15V, and reversal connection is negative.
Ammeter A and voltmeter V is used to carry out regulated quantity display tracking, and two tables are obtained by lower divider resistance R4 from three terminal regulator
Working power.
The utility model uses AC power frequency supply, and its electric power is very sufficient, and is readily available in industry spot,
The signal generator circuit principle is simple and reliable, is easily worked making, or even can with the direct strap circuits of omnipotent circuit board
Realize, application is very convenient, is especially suitable for the use of industry spot.
Claims (5)
1. a kind of DC voltage and current signal generator, it is characterized in that, composition includes dc source, current signal output unit
With voltage signal output unit, the current signal output unit includes ammeter（A）, rheostat（R1）, current-limiting resistance（R2）
With two current signal output ends, the rheostat（R1）And current-limiting resistance（R2）It is connected in series and is followed by dc source just
Between pole and the first current signal output end, the ammeter（A）Negative pole and the second current signal for being connected to dc source are defeated
Go out between terminal；The voltage signal output unit includes voltmeter（V）, potentiometer（W）With two voltage signal output end,
The potentiometer（W）Two fixing ends indirect dc source output voltage, two voltage signal output end connect respectively
Potentiometer（W）Sliding end and dc source positive pole, the voltmeter（V）It is connected between two voltage signal output end.
2. a kind of DC voltage and current signal generator according to claim 1, it is characterized in that, the dc source includes
Transformer（T）, rectifier bridge（ZQ）And three terminal regulator（U1）, the transformer（T）Primary coil be connected with AC power, it is secondary
Sideline circle connects rectifier bridge（ZQ）Ac input end, the three terminal regulator（U1）Input termination rectifier bridge（ZQ）Direct current it is defeated
Go out end, output termination current signal output unit and voltage signal output unit.
3. a kind of DC voltage and current signal generator according to claim 2, it is characterized in that, the ammeter（A）With
Voltmeter（V）It is digital instrument and is provided with common power supply unit, said supply unit includes upper divider resistance（R3）With under
Divider resistance（R4）, three terminal regulator（U1）Output voltage by upper divider resistance（R3）With lower divider resistance（R4）Partial pressure is followed by
Enter ammeter（A）And voltmeter（V）Feeder ear.
4. a kind of DC voltage and current signal generator according to claim 3, it is characterized in that, the rectifier bridge（ZQ）With
Three terminal regulator（U1）Output end be equipped with filter capacitor.
5. a kind of DC voltage and current signal generator according to claim 4, it is characterized in that, the transformer（T）'s
Fuse is provided between primary coil and AC power（FU）And power switch（S）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720661507.0U CN207098963U (en) | 2017-06-08 | 2017-06-08 | A kind of DC voltage and current signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720661507.0U CN207098963U (en) | 2017-06-08 | 2017-06-08 | A kind of DC voltage and current signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207098963U true CN207098963U (en) | 2018-03-13 |
Family
ID=61551936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720661507.0U Expired - Fee Related CN207098963U (en) | 2017-06-08 | 2017-06-08 | A kind of DC voltage and current signal generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207098963U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039106A (en) * | 2018-09-06 | 2018-12-18 | 天津七二通信广播股份有限公司 | A kind of railway locomotive radio station test power supply and its implementation |
| CN110320392A (en) * | 2019-07-29 | 2019-10-11 | 西安工程大学 | A kind of electric power monitoring detection system |
-
2017
- 2017-06-08 CN CN201720661507.0U patent/CN207098963U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039106A (en) * | 2018-09-06 | 2018-12-18 | 天津七二通信广播股份有限公司 | A kind of railway locomotive radio station test power supply and its implementation |
| CN110320392A (en) * | 2019-07-29 | 2019-10-11 | 西安工程大学 | A kind of electric power monitoring detection system |
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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: 20180313 |