CN209017000U - High-voltage power amplifier - Google Patents
High-voltage power amplifier Download PDFInfo
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- CN209017000U CN209017000U CN201821813383.4U CN201821813383U CN209017000U CN 209017000 U CN209017000 U CN 209017000U CN 201821813383 U CN201821813383 U CN 201821813383U CN 209017000 U CN209017000 U CN 209017000U
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- voltage
- amplifier
- basic amplifier
- basic
- power supply
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Abstract
The utility model relates to technology of instrument and meter fields, more particularly, to high-voltage power amplifier, it has by operational amplifier and expands the basic amplifier for flowing boosting field-effect tube and forming, and signal input unit connects the signal input part of basic amplifier, provides standard signal to basic amplifier；Working power unit provides high-pressure work power supply for basic amplifier, and direct current is boosted and obtained the operating voltage of basic amplifier by power supply boost module by working power unit, the operating voltage with basic amplifier output voltage auto-adjustment control；Feed circuit obtains basic amplifier by voltage sample circuit and exports the corresponding signal of high pressure, forms a close loop negative feedback circuit with basic amplifier.Structure design and its operating voltage using track power supply by the way of auto-control of the utility model to basic amplifier.Cancelling step-up transformer improves the frequency characteristic of power amplification by the way of directly amplifying, and improves the working efficiency of power amplifier.
Description
Technical field
The utility model relates to technology of instrument and meter fields, more particularly, to calibration power amplifying technique field.
Background technique
Current country's calibration power supply is generally used low pressure amplifier for standard signal for the output of ac high voltage range
Voltage amplification is to 20V(virtual value) behind left and right, using step-up transformer, it is transformed into high voltage and exports to tested voltmeter.And
Direct voltage output then generally takes the mode directly amplified to export to checklist.AC and DC voltage is exported, needs to configure
Two sets of power amplification circuits of AC and DC.
Since calibration power supply need to export the adjustable voltage an of high stability, high accuracy, it is both needed to draw in power amplifier
Enter feed circuit.Output end in existing calibration power technology, for alternating voltage output, usually in a low pressure amplifier
One step-up transformer of adjunction, the output of Lai Shixian high voltage between load (checklist).Due to increasing in power amplifier
Step-up transformer, causes the circuit many problems occur.First, limiting the reference frequency output of amplifier.If transformer
The inductance of coil is not big enough, and low frequency characteristic can degenerate.Increase inductance, then leakage inductance will increase again, the radio-frequency head of frequency characteristic
Divide meeting degradation again, so general only just can guarantee technical indicator within the scope of 40Hz ~ 400Hz.Second, due to transformer fe
The magnetization curve of core is nonlinear, therefore output voltage will appear biggish non-linear distortion.Third, transformer in low frequency and
High frequency can generate phase shift, and amplifier is made to be easy to produce self-oscillation when introducing feedback, and entire circuit is caused to damage.Fourth, by
In transformer itself, there are copper loss and iron loss, reduce the efficiency of amplifier.
Summary of the invention
The purpose of the utility model is to overcome prior art defects, provide a kind of high-voltage power amplifier, make output
High voltage has high stability, high accuracy and non-linear distortion very small.
In order to achieve the above objectives, the utility model adopts the following technical solution:
High-voltage power amplifier, includes
Basic amplifier, the basic amplifier are made of operational amplifier and expansion stream boosting field-effect tube, basic amplifier
With signal input part and voltage output end；
Signal input unit, the signal input unit connect basic amplifier signal input part, provide standard signal to
Basic amplifier；
Working power unit, the working power unit provide high-pressure work power supply, working power unit for basic amplifier
With 12V power supply and power supply boost module；The direct current of 12V power supply output passes through power supply boost module
Boost and obtain the operating voltage of basic amplifier, the operating voltage with basic amplifier output voltage auto-adjustment control；
Feed circuit, the feed circuit obtain basic amplifier by voltage sample circuit and export the corresponding signal of high pressure,
After feed circuit is handled, a close loop negative feedback circuit is formed with basic amplifier.
Above scheme is further: the operating voltage of power supply boost module output be by voltage sample circuit and
Voltage regulator circuit cooperation adjusts control, and voltage sample circuit is conveyed to after obtaining the corresponding signal of basic amplifier output high pressure
Voltage regulator circuit goes control power supply boost module output according to the size of the signal after voltage regulator circuit is handled
Operating voltage.
Above scheme is further: the voltage Vo of the voltage output end output of the basic amplifier is adjustable voltage,
Within the scope of broadband DC ~ 6KHz, width-adjustable, frequency modulation and phase modulation, and output voltage require adjust amplitude range 10% ~
It is continuously adjusted between 100%.
The utility model is automatic by the way of tracking power supply to the structure design of basic amplifier and its operating voltage
Regulation.Cancel step-up transformer, by the way of directly amplifying, thus to obtain following the utility model has the advantages that putting first is that improving power
Big frequency characteristic eliminates distortion；Second is that the working efficiency of power amplifier is improved, third is that production and processing technology has been simplified,
Fourth is that keeping equipment instrument small, light-weight, facilitate user's on-site proving.
Detailed description of the invention:
Attached drawing 1 is the utility model preferred embodiment theory structure schematic diagram.
Specific embodiment:
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
As shown in fig.1, being the preferred embodiment schematic diagram of the utility model, the utility model is in relation to a kind of high-voltage power
Amplifier, with basic amplifier 1, signal input unit 2, working power unit 3, feed circuit 4.Wherein, this puts substantially
Big device 1 is made of operational amplifier and expansion stream boosting field-effect tube, and basic amplifier 1 has signal input part and voltage output
End.The signal input part connection signal input unit 2 of basic amplifier 1, the signal input unit 2 provide standard signal to basic
The small voltage signal of amplifier 1,1 pair of basic amplifier input zooms into required high voltage, then by basic amplifier 1
Voltage output end output, such as send to tested voltmeter.The working power unit 3 is that basic amplifier 1 provides high-pressure work power supply,
Working power unit 3 has 12V power supply 31 and power supply boost module 32；The direct current that 12V power supply 31 exports
The operating voltage of basic amplifier is boosted and obtained by power supply boost module 32, and the operating voltage is with basic amplifier
Output voltage auto-adjustment control greatly improves operation and the heat dissipating state of amplifier tube in this way.Feed circuit 4 is taken by voltage
Sample circuit 5 obtains the corresponding signal of basic amplifier output high pressure, after feed circuit is handled, forms one with basic amplifier
Close loop negative feedback circuit, to guarantee the accuracy and high stability and very small non-linear distortion of output HIGH voltage.
As shown in fig.1, the present embodiment is further: the operating voltage that the power supply boost module 32 exports be by
Voltage sample circuit 5 and the cooperation of voltage regulator circuit 6 adjust control, and voltage sample circuit 5 obtains basic amplifier output high pressure
It is conveyed to voltage regulator circuit 6 after corresponding signal, after the processing of voltage regulator circuit 6, goes to control according to the size of the signal
The operating voltage of power supply boost module output, structure is simple, effective, realizes that the mode of tracking power supply provides operating voltage,
Energy-saving and environmental protection greatly improve operation and the heat dissipating state of amplifier tube, extend the service life of device.
The utility model is automatic by the way of tracking power supply to the structure design of basic amplifier and its operating voltage
Regulation.Cancel step-up transformer, by the way of directly amplifying, the voltage Vo of the voltage output end output of basic amplifier 1 is
Adjustable voltage, within the scope of broadband DC ~ 6KHz, width-adjustable, frequency modulation and phase modulation, and output voltage requires the amplitude adjusted measuring
It is continuously adjusted between the 10% ~ 100% of journey.The maximum of working power unit 3 boosts to ± 1000V DC power supply, environmental requirement compared with
It is low, also just reduce the production cost.
The utility model uses a set of direct amplifier system high-voltage power amplifier, cancels step-up transformer, in frequency DC ~ 6KHz model
In enclosing, the stability and accuracy of AC and DC output HIGH voltage ensure that, while also realizing that lighting provides for calibration power supply
May, it is small in size, light-weight, facilitate user's on-site proving.The utility model can also be made into single module form, so as to as doctor
It treats instrument and audio-frequency power amplifier uses, production and processing technology is simple, low manufacture cost.
Certainly, the utility model can also have other various embodiments, without departing substantially from the spirit of the present invention and its essence
In the case of, those skilled in the art work as can make various corresponding changes and modification, but these according to the utility model
Corresponding changes and modifications all should belong to the protection scope of the utility model the attached claims.
Claims (3)
1. high-voltage power amplifier, it is characterised in that: have
Basic amplifier (1), which is made of operational amplifier and expansion stream boosting field-effect tube, basic to amplify
Device (1) has signal input part and voltage output end；
Signal input unit (2), the signal input unit (2) connect the signal input part of basic amplifier (1), provide standard letter
Number give basic amplifier (1)；
Working power unit (3), the working power unit (3) are that basic amplifier (1) provides high-pressure work power supply, working power
Unit (3) has 12V power supply (31) and power supply boost module (32)；The direct current of 12V power supply (31) output
The operating voltage of basic amplifier is boosted and obtained by power supply boost module (32), and the operating voltage is with basic amplifier
Output voltage auto-adjustment control；
Feed circuit (4), the feed circuit (4) by voltage sample circuit (5) obtain basic amplifier export high pressure it is corresponding
Signal forms a close loop negative feedback circuit with basic amplifier after feed circuit is handled.
2. high-voltage power amplifier according to claim 1, it is characterised in that: the power supply boost module (32) is defeated
Operating voltage out is that control, voltage sample circuit (5) are adjusted with voltage sample circuit (5) and voltage regulator circuit (6)
Voltage regulator circuit (6) are conveyed to after obtaining the corresponding signal of basic amplifier output high pressure, are handled through voltage regulator circuit (6)
Afterwards, the operating voltage of control power supply boost module output is gone according to the size of the signal.
3. high-voltage power amplifier according to claim 1, it is characterised in that: the voltage of the basic amplifier (1) is defeated
The voltage Vo of outlet output is adjustable voltage, within the scope of broadband DC ~ 6KHz, width-adjustable, frequency modulation and phase modulation, and output voltage
It is required that the amplitude adjusted is continuously adjusted between the 10% ~ 100% of range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821813383.4U CN209017000U (en) | 2018-11-06 | 2018-11-06 | High-voltage power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821813383.4U CN209017000U (en) | 2018-11-06 | 2018-11-06 | High-voltage power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209017000U true CN209017000U (en) | 2019-06-21 |
Family
ID=66841395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821813383.4U Active CN209017000U (en) | 2018-11-06 | 2018-11-06 | High-voltage power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209017000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118795403A (en) * | 2024-09-11 | 2024-10-18 | 浙江盛迪科技股份有限公司 | Digital amplifier and linear power amplifier box comprising digital amplifier |
-
2018
- 2018-11-06 CN CN201821813383.4U patent/CN209017000U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118795403A (en) * | 2024-09-11 | 2024-10-18 | 浙江盛迪科技股份有限公司 | Digital amplifier and linear power amplifier box comprising digital amplifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200616 Address after: 211, 212, 214, 216, incubation building B, Taohuayuan science and Technology Innovation Park, Xixiang street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN NANMETER TECHNOLOGY Co.,Ltd. Address before: 518000 Yintian Community Yintian Industrial Zone, Xixiang Street, Baoan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN KAICHEN TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |