CN201897607U - High-voltage linear amplifier used for high-voltage insulation dielectric spectrum analysis - Google Patents
High-voltage linear amplifier used for high-voltage insulation dielectric spectrum analysis Download PDFInfo
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- CN201897607U CN201897607U CN2010205898865U CN201020589886U CN201897607U CN 201897607 U CN201897607 U CN 201897607U CN 2010205898865 U CN2010205898865 U CN 2010205898865U CN 201020589886 U CN201020589886 U CN 201020589886U CN 201897607 U CN201897607 U CN 201897607U
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- operational amplifier
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- insulation dielectric
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Abstract
The utility model relates to a high-voltage linear amplifier used for high-voltage insulation dielectric spectrum analysis. The existing amplifier adopts a field-effect tube amplification circuit, the design of the amplifier and the structure of the circuit topology are complex. The high-voltage linear amplifier comprises a power supply part (1) connected with an amplification part (3), the amplification part is respectively connected with an input part (2) and an output part (4) and comprises an operational amplifier III (5) and an operational amplifier VI (6), the operational amplifier III is respectively connected with an operational amplifier I (7) and an operational amplifier II (8), the operational amplifier VI is respectively connected with an operational amplifier IV (9) and an operational amplifier V (10), and the operational amplifier III and the operational amplifier VI are connected with the output part. The high-voltage linear amplifier is used for the high-voltage insulation dielectric spectrum analysis.
Description
Technical field:
The utility model relates to a kind of high pressure linear amplifier that the High-Voltage Insulation dielectric spectra is analyzed that is used for.
Background technology:
High-voltage amplifier is a kind of signal amplifier of high voltage amplitude output, and amplitude generally can reach more than thousands of volts, and responsive bandwidth can reach 20KHz, and climbing speed can reach 1000V/ μ S, and degree of distortion is divided one pole and bipolar amplifier less than 1%.Single amplifier can only amplify unipolarity direct current or unipolar pulse and other unipolar signals.Bipolar amplifier can amplify AC signal, direct current signal or other any signal, is called the random waveform high-voltage amplifier.
The electric insulation diagnosis and the insulation characterisitic measuring and analysing meter IDA 200 of the development of Sweden Bao Jiama company, the test voltage output area is 0～200V (peak value), is applicable to transformer, sleeve pipe, cable XLPE and oil-paper cable), CT/PT mutual inductor, generator, motor, and the Insulation test of isolating switch.Austria MICRON DIRANA dielectric response analyser FDS (frequency domain spectra) measuring voltage 0～200V can be applied to the liquid water content analysis in the Research on Power Transformer Oil-paper Insulation, diagnosis, generator and the diagnosis of motor insulation and the diagnosis of cable insulation of bushing.
Above-mentioned several amplifier all adopts field effect transistor amplification circuit, Design of Amplifier and circuit topological structure more complicated thereof.The used discrete component quantity of field effect transistor amplifier is many, and the quiescent operation point selection is calculated more loaded down with trivial details, and bipolarity is amplified the problem that has intermodulation distortion.
Summary of the invention:
The purpose of this utility model provides a kind of high pressure linear amplifier that the High-Voltage Insulation dielectric spectra is analyzed that is used for, and this amplifier is realized convenient, and is simple in structure, can be applicable to the insulation diagnosis analysis of high voltage electric power equip ment.
Above-mentioned purpose realizes by following technical scheme:
Be used for the high pressure linear amplifier that the High-Voltage Insulation dielectric spectra is analyzed, its composition comprises: power unit, described power unit connects amplifier section, described amplifier section connects importation and output respectively, described amplifier section comprises operational amplifier three and operational amplifier six, described operational amplifier three is concatenation operation amplifier one concatenation operation amplifier two respectively, described operational amplifier six is concatenation operation amplifier four concatenation operation amplifiers five respectively, and described operational amplifier three is connected described output with described operational amplifier six.
Beneficial effect:
1. the utility model has designed symmetrical amplifying circuit as shown in Figure 2, each is made up of left and right sides two halves circuit three amplifiers, middle amplifier realizes enlarging function, the amplifier of amplifying for the centre with two amplifiers up and down provides power supply, thereby enlarged output area, finally realized the high voltage output of peak-to-peak value 4U.Simple in structure, be convenient to realize.
2. the utility model design has been owing to designed circuit topological structure dexterously, makes amplifying circuit integrated level height, and used component number greatly reduces.
3. the utility model design need not when making up high-voltage amplifier to carry out complicated circuit quiescent point design owing to adopted the high pressure integrated operational amplifier, and circuit of the present invention is simple and reliable.
4. the integrated operational amplifier frequency response range of the utility model design employing is wide, the intermodulation distortion problem that produces in the time of can effectively avoiding high-frequency signal to amplify.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is circuit theory diagrams of the present utility model.
Accompanying drawing 3 is waveform input signal figure.
Accompanying drawing 4 is output waveform oscillograms.
Embodiment:
Embodiment 1:
As shown in Figure 1, be used for the high pressure linear amplifier that the High-Voltage Insulation dielectric spectra is analyzed, its composition comprises: power unit 1, it is characterized in that: described power unit connects amplifier section 3, described amplifier section connects importation 2 and output 4 respectively, described amplifier section comprises operational amplifier 35 and operational amplifier 66, described operational amplifier three is concatenation operation amplifier one 7 concatenation operation amplifiers 28 respectively, described operational amplifier six is concatenation operation amplifier 49 concatenation operation amplifiers 5 10 respectively, and described operational amplifier three is connected described output with described operational amplifier six.
The circuit of amplifier section as shown in Figure 2, this circuit is symmetrical amplifying circuit, the left-half circuit is made up of three amplifier A1, A2, A3, right half part is made up of A4, A5, A6, wherein in the middle of two amplifier A3, A6 realize enlarging functions.A1, A2 and A4, A5 are respectively A3 and A6 provides power supply, thereby realizes optimum the amplification in order to make full use of amplifier, and the supply voltage of circuit design is V
+-V
-=2U, however A3 and A6 can't directly add the 2U supply voltage, can't realize the output of last peak-to-peak value 4U.The ingenious part of this circuit provides power supply with two amplifiers up and down for the amplifier of centre with regard to being, thereby has enlarged output area, and wherein top two amplifier A1, A4 connect+and the U power supply realizes the following of prime output voltage, and raises U/2; Below two amplifier A2, A5 principle identical with A1, A4, realize the following of prime output voltage, and reduce U/2, like this about the difference of amplifier output signal amplitude just in time be U, thereby provide power supply for amplifier A3, the A6 of centre.Input signal and output waveform are respectively as shown in Figure 3 and Figure 4.
Claims (1)
1. one kind is used for the high pressure linear amplifier that the High-Voltage Insulation dielectric spectra is analyzed, its composition comprises: power unit, it is characterized in that: described power unit connects amplifier section, described amplifier section connects importation and output respectively, described amplifier section comprises operational amplifier three and operational amplifier six, described operational amplifier three is concatenation operation amplifier one concatenation operation amplifier two respectively, described operational amplifier six is concatenation operation amplifier four concatenation operation amplifiers five respectively, and described operational amplifier three is connected described output with described operational amplifier six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205898865U CN201897607U (en) | 2010-11-04 | 2010-11-04 | High-voltage linear amplifier used for high-voltage insulation dielectric spectrum analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205898865U CN201897607U (en) | 2010-11-04 | 2010-11-04 | High-voltage linear amplifier used for high-voltage insulation dielectric spectrum analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897607U true CN201897607U (en) | 2011-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205898865U Expired - Fee Related CN201897607U (en) | 2010-11-04 | 2010-11-04 | High-voltage linear amplifier used for high-voltage insulation dielectric spectrum analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780463B (en) * | 2012-07-25 | 2017-02-08 | 哈尔滨理工大学 | High-voltage cascade device and high-voltage cascade method of linear amplifier |
| CN110794273A (en) * | 2019-11-19 | 2020-02-14 | 哈尔滨理工大学 | Potential time domain spectrum testing system with high-voltage driving protection electrode |
-
2010
- 2010-11-04 CN CN2010205898865U patent/CN201897607U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780463B (en) * | 2012-07-25 | 2017-02-08 | 哈尔滨理工大学 | High-voltage cascade device and high-voltage cascade method of linear amplifier |
| CN110794273A (en) * | 2019-11-19 | 2020-02-14 | 哈尔滨理工大学 | Potential time domain spectrum testing system with high-voltage driving protection electrode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 Termination date: 20121104 |