CN209390021U - A kind of charge voltage converter amplifier circuit and electronic device - Google Patents
A kind of charge voltage converter amplifier circuit and electronic device Download PDFInfo
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- CN209390021U CN209390021U CN201920162197.7U CN201920162197U CN209390021U CN 209390021 U CN209390021 U CN 209390021U CN 201920162197 U CN201920162197 U CN 201920162197U CN 209390021 U CN209390021 U CN 209390021U
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Abstract
The application belongs to field of circuit technology, a kind of charge voltage converter amplifier circuit and electronic device are disclosed, which is used to amplify the charge signal of charge detector output and amplified charge signal is converted to the voltage signal of default specification.The charge voltage converter amplifier circuit includes: amplifying unit, converting unit, feedback unit and output unit；Wherein, amplifying unit is used to connect detector and amplifies the charge signal of the detector output；Converting unit is used to be converted to the amplified charge signal of the amplifying unit voltage signal of default specification；The input terminal of feedback unit is connected to the output end of converting unit, and output end is connected to the input terminal of the amplifying unit；The input terminal of output unit is connected to the output end of amplifier, output unit handle converted cell translation after the voltage signal and export.The charge voltage converter amplifier circuit can reduce the generation of noise, improve the processing success rate of charge signal.
Description
Technical field
The application belongs to field of circuit technology, is related to charge signal processing technology field more particularly to a kind of charge voltage
Converter amplifier circuit and electronic device.
Background technique
In particle physics experiment, the quick precise measurement of faint charge signal is to influence the key factor of experimental result.
Usually in high-precision particle physics experimental system, the charge signal of detector output is very faint, some even fly library
Magnitude, and example rate is very high, it is small that conventional charge processing circuit can not quickly handle this youngest in high example rate
Signal causes signal to be easy all to be flooded by noise, largely effects on the accuracy of entire experimental system in this way, and then influence
Experiment conclusion.
Utility model content
The purpose of the application is to solve the charge signal detected in conventional charge processing circuit and be easy by noise
All the problem of flooding, to provide a kind of charge voltage converter amplifier circuit and electronic device, wherein charge voltage is converted
Amplifying circuit amplifies the charge signal detected using second amplifying circuit, while selecting two in circuit design and device
Aspect reduces the generation of noise to the greatest extent, and charge signal is avoided all to be flooded by noise, improves the processing success rate of charge signal.
In a first aspect, this application provides a kind of charge voltage converter amplifier circuit, for amplifying charge detector induction
The charge signal that charge is exported, the charge voltage converter amplifier circuit include amplifying unit, converting unit, feedback unit and
Output unit.
The input terminal of the amplifying unit is used to connect detector and amplifies the charge signal of the detector output.It is described
The input terminal of converting unit is connected to the output end of the amplifying unit, and the converting unit is for amplifying the amplifying unit
Charge signal afterwards is converted to the voltage signal of default specification.The input terminal of the feedback unit is connected to the converting unit
Output end, output end are connected to the input terminal of the amplifying unit.
The input terminal of the output unit is connected to the output end of the amplifying unit, and the output unit is used for will be described
It is exported after the voltage signal processing of the default specification of converting unit output.
Further, the amplifying unit includes the first field-effect tube and the second field-effect tube.First field-effect tube
It is N-channel junction field effect transistor with second field-effect tube.The grid of first field-effect tube is connected to described
The drain electrode of detector, first field-effect tube is connected with the source electrode of second field-effect tube, second field-effect tube
Drain electrode is connected with the input terminal of the converting unit；The source electrode of first field-effect tube is grounded, second field-effect tube
Grounded-grid.
Further, the converting unit include the first operational amplifier, the input terminal of first operational amplifier with
The drain electrode of second field-effect tube connects, and receives the amplified charge signal of the amplifying unit.First operation amplifier
The output end of device is connected to the output end of the feedback unit, the voltage signal after output conversion.The charge voltage turns
Changing amplifying circuit further includes power supply unit.Said supply unit includes first resistor, and one end of the first resistor is connected to institute
The output end of the first operational amplifier is stated, the other end of the first resistor is for connecting power supply.
Further, the feedback unit includes first capacitor and second resistance.The first capacitor and second electricity
Resistance is connected in parallel.One end of the first capacitor is connected to the output end of first operational amplifier, and the other end is connected to institute
State the grid of the first field-effect tube.One end of the second resistance is connected to the output end of first operational amplifier, another
End is connected to the grid of first field-effect tube.
Further, the output unit includes blocking unit.The input terminal of the blocking unit is connected to the conversion
The output end of unit, the blocking unit are used for the direct current component being isolated in the voltage signal.
Further, the blocking unit includes the second capacitor for filtering DC component.Second capacitor it is defeated
Enter the output end that end is connected to the first operational amplifier, the output end output AC voltage of second capacitor.
Further, the output unit further includes buffer cell.The input terminal of the buffer cell and the second capacitor
Output end connection.
Further, the buffer cell includes the second operational amplifier for handling the alternating voltage, second fortune
The input terminal for calculating amplifier is connect with the output end of second capacitor.
Further, the buffer cell includes the differential driver for handling the alternating voltage, the differential driver
Input terminal connect with the output end of second capacitor, the differential driver be used for output difference signal.
Further, the buffer cell includes the voltage follower for handling the alternating voltage, the voltage follower
Input terminal connect with the output end of second capacitor.
Second aspect, present invention also provides a kind of electronic device, including circuit board, the circuit board is equipped with above-mentioned
Charge voltage converter amplifier circuit.
Compared with prior art, the beneficial effects of the present application are as follows: charge voltage converter amplifier circuit provided by the present application, use
In the charge signal that amplification charge detector charge inducing is exported.Charge voltage converter amplifier circuit includes amplifying unit, turns
Unit, feedback unit and output unit are changed, the charge signal detected is inputted amplifying unit by detector, and amplifying unit is charge
Signal carries out being input to converting unit after tentatively amplifying；The amplified converted cell translation of charge signal becomes default specification
Voltage signal；The voltage signal that feedback unit in circuit exports converting unit is fed back from output end to input terminal, at this
Improve the performance indicator in circuit in the process, the noise in neutralized system realizes noise reduction；Output unit in circuit believes voltage
Number carry out processing again.Noise reduction is carried out to circuit by these technological means, is all flooded so as to avoid signal by noise
Do not have the generation of phenomenon, improves the processing success rate of charge signal.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present application, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the charge voltage converter amplifier circuit that one embodiment of the application provides；
Fig. 2 is another structural schematic diagram for the charge voltage converter amplifier circuit that one embodiment of the application provides；
Fig. 3 is the circuit diagram of the charge voltage converter amplifier circuit in the embodiment of the present application one；
Fig. 4 is the structural schematic diagram of the charge voltage converter amplifier circuit in the embodiment of the present application two；
Fig. 5 is the structural schematic diagram of the charge voltage converter amplifier circuit in the embodiment of the present application three.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiment is some embodiments of the present application, instead of all the embodiments.Based on this Shen
Please in embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall in the protection scope of this application.
With reference to the accompanying drawing, it elaborates to some embodiments of the application.In the absence of conflict, following
Feature in embodiment and embodiment can be combined with each other.
This application provides a kind of charge voltage converter amplifier circuits, are exported for amplifying charge detector charge inducing
Charge signal.
Embodiment one
Referring to Fig. 1, charge voltage converter amplifier circuit includes amplifying unit 110, converting unit 120,130 and of feedback unit
Output unit 200.
The input terminal of amplifying unit 110 is used for the charge signal for connecting detector and amplifying detector output；Converting unit
120 input terminal is connected to the output end of amplifying unit 110, for being converted to the amplified charge signal of amplifying unit 110
The voltage signal of default specification；The input terminal of feedback unit 130 is connected to the output end of converting unit 120, and output end is connected to
The input terminal of amplifying unit 110.Amplifying unit, converting unit and feedback unit form a closed loop, and output end signal feedback arrives
Input terminal can improve the performance indicator of amplifying circuit.The input terminal of output unit 200 is connected to the output of converting unit 120
End, output unit 200 are used to handle the voltage signal that the converting unit 120 exports, handle voltage signal, improve electricity
Road performance.
In one embodiment, referring to Fig. 3, in charge voltage converter amplifier circuit, amplifying unit 110 includes first
Effect pipe U1 and the second field-effect tube U2.The grid of first field-effect tube U1 is connected to the detector, the first field-effect tube U1
Drain electrode be connected with the source electrode of the second field-effect tube U2, the drain electrode of the second field-effect tube U2 is connected with the input terminal of converting unit；
The source electrode of first field-effect tube U1 is grounded, the grounded-grid of the second field-effect tube U2.The charge signal Qin of detector output is from the
The grid of one field-effect tube U1 enters charge voltage converter amplifier circuit.In the first field-effect tube U1 and the second field-effect tube U2
In, the charge signal Qin of detector output completes preliminary amplification.First field-effect tube U1 and the second field-effect tube U2 is using cascade
Mode, realize two-stage amplification.The amplified charge signal waveform and first effect of the drain electrode output of second field-effect tube U2
Should pipe U1 grid input amplification before charge signal waveform it is almost the same.
Illustratively, the first field-effect tube U1 and the second field-effect tube U2 is N-channel junction field effect transistor,
Junction field effect transistor is the device of majority carrier conduction, and speed is high, and noise coefficient is low, and the noise of generation is few.
In one embodiment, referring to Fig. 3, in charge voltage converter amplifier circuit, converting unit 120 includes the first fortune
Amplifier OP1 is calculated, the input terminal of the first operational amplifier OP1 is connect with the drain electrode of the second field-effect tube U2, receives amplifying unit
110 amplified charge signals.First operational amplifier OP1 tentatively amplifies the first field-effect tube U1 and the second field-effect tube U2
Charge signal afterwards is converted into voltage signal output.
In one embodiment, referring to Fig. 3, charge voltage converter amplifier circuit further includes power supply unit 140, power supply unit
140 include first resistor R1.One end of first resistor R1 is connected to the input terminal of the first operational amplifier OP1, and described
The other end of one resistance R1 is for connecting power Vcc.Power Vcc provides driving voltage for charge voltage converter amplifier circuit.
In one embodiment, referring to Fig. 3, in charge voltage converter amplifier circuit, feedback unit 130 includes the first electricity
Hold C1 and second resistance R2, first capacitor C1 and second resistance R2 are connected in parallel.One end of first capacitor C1 is connected to the first fortune
The output end of amplifier OP1 is calculated, the other end is connected to the grid of the first field-effect tube U1；One end of second resistance R2 is connected to
The output end of one operational amplifier OP1, the other end are connected to the grid of the first field-effect tube U1.First operational amplifier OP1's
Voltage gain is very big, and feedback unit 130 is added in charge voltage converter amplifier circuit, enables circuit stable operation.Load
Unit 130 feeds back output end signal to input terminal, so as to improve the performance indicator in amplifying circuit, wherein in first capacitor C1
With most of noise in charge voltage converter amplifier circuit, the purpose of noise reduction is realized.
In one embodiment, referring to fig. 2, in charge voltage converter amplifier circuit, output unit 200 includes blocking list
Member 210, the input terminal of blocking unit 210 are connected to the output end of converting unit 130, and blocking unit 210 is believed for isolation voltage
Direct current component in number exports AC signal.
In one embodiment, referring to Fig. 3, in charge voltage converter amplifier circuit, blocking unit 210 includes being used for
The second capacitor C2 of DC component is filtered, the input terminal of the second capacitor C2 is connected to the output end of the first operational amplifier OP1, receives
The voltage signal of default specification after the first operational amplifier OP1 conversion.It can be with straight in the charge signal of detector output
Flow component can also introduce some DC components in amplification conversion process, so needing to be equipped with blocking unit 210 to DC component
It is handled.
In one embodiment, referring to fig. 2, in charge voltage converter amplifier circuit, output unit 200 includes further including
For handling the buffer cell 220 of alternating voltage, the output end company of the input terminal of buffer cell 220 and the blocking unit 210
It connects.As shown in figure 3, buffer cell 220 includes the second operational amplifier OP2, second operational amplifier OP2 of processing alternating voltage
Input terminal connect with the output end of the second capacitor C2.Second operational amplifier OP2 can increase ac voltage signal in circuit
Driving capability.
Embodiment two
As shown in Figure 1, charge voltage converter amplifier circuit includes amplifying unit 110, converting unit 120, feedback unit 130
With output unit 200.
The input terminal of amplifying unit 110 is used for the charge signal for connecting detector and amplifying detector output；Converting unit
120 input terminal is connected to the output end of amplifying unit 110, for being converted to the amplified charge signal of amplifying unit 110
The voltage signal of default specification；The input terminal of feedback unit 130 is connected to the output end of converting unit 120, and output end is connected to
The input terminal of amplifying unit 110.Amplifying unit, converting unit and feedback unit form a closed loop, and output end signal feedback arrives
Input terminal can improve the performance indicator of amplifying circuit.The input terminal of output unit 200 is connected to the output of converting unit 120
End, output unit 200 are used to handle the voltage signal that the converting unit 120 exports, handle voltage signal, improve electricity
Road performance.
In one embodiment, referring to fig. 4, in charge voltage converter amplifier circuit, amplifying unit 110 includes first
Effect pipe U1 and the second field-effect tube U2.The grid of first field-effect tube U1 is connected to the detector, the first field-effect tube U1
Drain electrode be connected with the source electrode of the second field-effect tube U2, the drain electrode of the second field-effect tube U2 is connected with the input terminal of converting unit；
The source electrode of first field-effect tube U1 is grounded, the grounded-grid of the second field-effect tube U2.The charge signal Qin of detector output is from the
The grid of one field-effect tube U1 enters charge voltage converter amplifier circuit.In the first field-effect tube U1 and the second field-effect tube U2
In, the charge signal Qin of detector output completes preliminary amplification.First field-effect tube U1 and the second field-effect tube U2 is using cascade
Mode, realize two-stage amplification.The amplified charge signal waveform and first effect of the drain electrode output of second field-effect tube U2
Should pipe U1 grid input amplification before charge signal waveform it is almost the same.
Illustratively, the first field-effect tube U1 and the second field-effect tube U2 is N-channel junction field effect transistor,
Junction field effect transistor is the device of majority carrier conduction, and speed is high, and noise coefficient is low, and the noise of generation is few.
In one embodiment, referring to fig. 4, in charge voltage converter amplifier circuit, converting unit 120 includes the first fortune
Amplifier OP1 is calculated, the input terminal of the first operational amplifier OP1 is connect with the drain electrode of the second field-effect tube U2, receives amplifying unit
110 amplified charge signals.First operational amplifier OP1 tentatively amplifies the first field-effect tube U1 and the second field-effect tube U2
Charge signal afterwards is converted into voltage signal output.
In one embodiment, referring to fig. 4, charge voltage converter amplifier circuit further includes power supply unit 140, power supply unit
140 include first resistor R1.One end of first resistor R1 is connected to the input terminal of the first operational amplifier OP1, and described
The other end of one resistance R1 is for connecting power Vcc.Power Vcc provides driving voltage for charge voltage converter amplifier circuit.
In one embodiment, referring to fig. 4, in charge voltage converter amplifier circuit, feedback unit 130 includes the first electricity
Hold C1 and second resistance R2, first capacitor C1 and second resistance R2 are connected in parallel.One end of first capacitor C1 is connected to the first fortune
The output end of amplifier OP1 is calculated, the other end is connected to the grid of the first field-effect tube U1；One end of second resistance R2 is connected to
The output end of one operational amplifier OP1, the other end are connected to the grid of the first field-effect tube U1.First operational amplifier OP1's
Voltage gain is very big, and feedback unit 130 is added in charge voltage converter amplifier circuit, enables circuit stable operation.Load
Unit 130 feeds back output end signal to input terminal, so as to improve the performance indicator in amplifying circuit, wherein in first capacitor C1
With most of noise in charge voltage converter amplifier circuit, the purpose of noise reduction is realized.
In one embodiment, referring to fig. 2, in charge voltage converter amplifier circuit, output unit 200 includes blocking list
Member 210, the input terminal of blocking unit 210 are connected to the output end of converting unit 130, and blocking unit 210 is believed for isolation voltage
Direct current component in number exports AC signal.
In one embodiment, referring to fig. 4, in charge voltage converter amplifier circuit, blocking unit 210 includes being used for
The second capacitor C2 of DC component is filtered, the input terminal of the second capacitor C2 is connected to the output end of the first operational amplifier OP1, receives
The voltage signal of default specification after the first operational amplifier OP1 conversion.It can be with straight in the charge signal of detector output
Flow component can also introduce some DC components in amplification conversion process, so needing to be equipped with blocking unit 210 to DC component
It is handled.
In one embodiment, referring to fig. 2, in charge voltage converter amplifier circuit, output unit 200 further includes being used for
The buffer cell 220 of alternating voltage is handled, the input terminal of buffer cell 220 is connect with the output end of blocking unit 210.Such as Fig. 4
Shown, buffer cell 220 includes processing differential driver, the output end company of the input terminal of differential driver and the second capacitor C2
It connects, differential driver is used for output difference signal.The signal of differential transfer can play very strong anti-interference energy to external disturbance
Power.
Embodiment three
Shown in Figure 1, charge voltage converter amplifier circuit includes amplifying unit 110, converting unit 120, feedback unit
130 and output unit 200.
The input terminal of amplifying unit 110 is used for the charge signal for connecting detector and amplifying detector output；Converting unit
120 input terminal is connected to the output end of amplifying unit 110, for being converted to the amplified charge signal of amplifying unit 110
The voltage signal of default specification；The input terminal of feedback unit 130 is connected to the output end of converting unit 120, and output end is connected to
The input terminal of amplifying unit 110.Amplifying unit, converting unit and feedback unit form a closed loop, and output end signal feedback arrives
Input terminal can improve the performance indicator of amplifying circuit.The input terminal of output unit 200 is connected to the output of converting unit 120
End, output unit 200 are used to handle the voltage signal that the converting unit 120 exports, handle voltage signal, improve electricity
Road performance.
In one embodiment, referring to Fig. 5, in charge voltage converter amplifier circuit, amplifying unit 110 includes first
Effect pipe U1 and the second field-effect tube U2.The grid of first field-effect tube U1 is connected to the detector, the first field-effect tube U1
Drain electrode be connected with the source electrode of the second field-effect tube U2, the drain electrode of the second field-effect tube U2 is connected with the input terminal of converting unit；
The source electrode of first field-effect tube U1 is grounded, the grounded-grid of the second field-effect tube U2.The charge signal Qin of detector output is from the
The grid of one field-effect tube U1 enters charge voltage converter amplifier circuit.In the first field-effect tube U1 and the second field-effect tube U2
In, the charge signal Qin of detector output completes preliminary amplification.First field-effect tube U1 and the second field-effect tube U2 is using cascade
Mode, realize two-stage amplification.The amplified charge signal waveform and first effect of the drain electrode output of second field-effect tube U2
Should pipe U1 grid input amplification before charge signal waveform it is almost the same.
Illustratively, the first field-effect tube U1 and the second field-effect tube U2 is N-channel junction field effect transistor,
Junction field effect transistor is the device of majority carrier conduction, and speed is high, and noise coefficient is low, and the noise of generation is few.
In one embodiment, referring to Fig. 5, in charge voltage converter amplifier circuit, converting unit 120 includes the first fortune
Amplifier OP1 is calculated, the input terminal of the first operational amplifier OP1 is connect with the drain electrode of the second field-effect tube U2, receives amplifying unit
110 amplified charge signals.First operational amplifier OP1 tentatively amplifies the first field-effect tube U1 and the second field-effect tube U2
Charge signal afterwards is converted into voltage signal output.
In one embodiment, referring to Fig. 5, charge voltage converter amplifier circuit further includes power supply unit 140, power supply unit
140 include first resistor R1.One end of first resistor R1 is connected to the input terminal of the first operational amplifier OP1, and described
The other end of one resistance R1 is for connecting power Vcc.Power Vcc provides driving voltage for charge voltage converter amplifier circuit.
In one embodiment, referring to Fig. 5, in charge voltage converter amplifier circuit, feedback unit 130 includes the first electricity
Hold C1 and second resistance R2, first capacitor C1 and second resistance R2 are connected in parallel.One end of first capacitor C1 is connected to the first fortune
The output end of amplifier OP1 is calculated, the other end is connected to the grid of the first field-effect tube U1；One end of second resistance R2 is connected to
The output end of one operational amplifier OP1, the other end are connected to the grid of the first field-effect tube U1.First operational amplifier OP1's
Voltage gain is very big, and feedback unit 130 is added in charge voltage converter amplifier circuit, enables circuit stable operation.Load
Unit 130 feeds back output end signal to input terminal, so as to improve the performance indicator in amplifying circuit, wherein in first capacitor C1
With most of noise in charge voltage converter amplifier circuit, the purpose of noise reduction is realized.
In one embodiment, referring to fig. 2, in charge voltage converter amplifier circuit, output unit 200 includes blocking list
Member 210, the input terminal of blocking unit 210 are connected to the output end of converting unit 130, and blocking unit 210 is believed for isolation voltage
Direct current component in number exports AC signal.
In one embodiment, referring to Fig. 5, in charge voltage converter amplifier circuit, blocking unit 210 includes being used for
The second capacitor C2 of DC component is filtered, the input terminal of the second capacitor C2 is connected to the output end of the first operational amplifier OP1, receives
The voltage signal of default specification after the first operational amplifier OP1 conversion.It can be with straight in the charge signal of detector output
Flow component can also introduce some DC components in amplification conversion process, so needing to be equipped with blocking unit 210 to DC component
It is handled.
In one embodiment, referring to fig. 2, in charge voltage converter amplifier circuit, output unit 200 further includes being used for
The buffer cell 220 of alternating voltage is handled, the input terminal of buffer cell 220 is connect with the output end of blocking unit 210.Such as Fig. 5
Shown, buffer cell 220 includes voltage follower, and the input terminal of voltage follower is connect with the output end of the second capacitor C2.Electricity
Pressure follower realizes that output voltage follows input voltage to change, and the voltage amplification factor perseverance of voltage follower is less than and close to 1.
The charge voltage converter amplifier circuit that each embodiment of the application provides, for amplifying charge detector charge inducing institute
The charge signal of output.Charge voltage converter amplifier circuit includes amplifying unit, converting unit, feedback unit and output unit,
The charge signal detected is inputted amplifying unit by detector, and amplifying unit, which carries out charge signal to be input to after tentatively amplifying, to be turned
Change unit；The amplified converted cell translation of charge signal becomes the voltage signal of default specification；Feedback unit in circuit
The voltage signal of converting unit output is fed back from output end to input terminal, the performance improved in circuit in this process refers to
It marks, the noise in neutralized system realizes noise reduction；Output unit in circuit carries out processing again to voltage signal.Pass through
These technological means carry out noise reduction to circuit, are all flooded the generation of phenomenon by noise so as to avoid signal, improve charge letter
Number processing success rate.
Present invention also provides a kind of electronic device, including circuit board, circuit board is equipped with the charge in previous embodiment
Voltage converter amplifier circuit.The electronic device can be used for sensor application field, such as obtain pressure by piezoelectric transducer
Signal obtains signal of light etc. by photoelectric sensor.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should all cover within the scope of protection of this application.Therefore, the protection scope of the application should be with right
It is required that protection scope subject to.
Claims (10)
1. a kind of charge voltage converter amplifier circuit, the charge signal exported for amplifying charge detector charge inducing,
Be characterized in that: the charge voltage converter amplifier circuit includes amplifying unit, converting unit, feedback unit and output unit；
The input terminal of the amplifying unit is used to connect detector and amplifies the charge signal of the detector output；The conversion
The input terminal of unit is connected to the output end of the amplifying unit, and the converting unit is used for the amplifying unit is amplified
Charge signal is converted to the voltage signal of default specification；The input terminal of the feedback unit is connected to the output of the converting unit
End, the output end of the feedback unit are connected to the input terminal of the amplifying unit；
The input terminal of the output unit is connected to the output end of the converting unit, and the output unit is used for the conversion
It is exported after the voltage signal processing of unit output.
2. charge voltage converter amplifier circuit according to claim 1, it is characterised in that: the amplifying unit includes first
Field-effect tube and the second field-effect tube, the grid of first field-effect tube are connected to the detector, first field-effect
The drain electrode of pipe is connected with the source electrode of second field-effect tube, and draining for second field-effect tube is defeated with the converting unit
Enter end to be connected；The source electrode of first field-effect tube is grounded, the grounded-grid of second field-effect tube.
3. charge voltage converter amplifier circuit according to claim 2, it is characterised in that: the converting unit includes first
Operational amplifier, the input terminal of first operational amplifier are connect with the drain electrode of second field-effect tube, first fortune
The output end for calculating amplifier is connected to the input terminal of the feedback unit；The charge voltage converter amplifier circuit further includes power supply
Unit, said supply unit include first resistor, and one end of the first resistor is connected to the defeated of first operational amplifier
Outlet, the other end of the first resistor is for connecting power supply.
4. charge voltage converter amplifier circuit according to claim 3, it is characterised in that: the feedback unit includes first
Capacitor and second resistance, the first capacitor and the second resistance are connected in parallel；One end of the first capacitor is connected to institute
The output end of the first operational amplifier is stated, the other end is connected to the grid of first field-effect tube；The one of the second resistance
End is connected to the output end of first operational amplifier, and the other end is connected to the grid of first field-effect tube.
5. charge voltage converter amplifier circuit according to claim 1, it is characterised in that: the output unit includes blocking
The input terminal of unit, the blocking unit is connected to the output end of the converting unit.
6. charge voltage converter amplifier circuit according to claim 5, it is characterised in that: the blocking unit includes being used for
The second capacitor of DC component is filtered, the input terminal of second capacitor is connected to the output end of the first operational amplifier, described
The output end output AC voltage of second capacitor.
7. charge voltage converter amplifier circuit according to claim 5, it is characterised in that: the output unit further includes delaying
Unit is rushed, the input terminal of the buffer cell is connect with the output end of the blocking unit.
8. charge voltage converter amplifier circuit according to claim 7, it is characterised in that: the buffer cell includes second
Operational amplifier, the input terminal of the second operational amplifier are connect with the output end of the blocking unit.
9. charge voltage converter amplifier circuit according to claim 7, it is characterised in that: the buffer cell includes difference
Driver, the input terminal of the differential driver are connect with the output end of the blocking unit, and the differential driver is for defeated
Differential signal out；Or the buffer cell includes voltage follower, the input terminal of the voltage follower and the blocking list
The output end connection of member.
10. a kind of electronic device, it is characterised in that: including circuit board, the circuit board is equipped with any one in claim 1-9
Charge voltage converter amplifier circuit described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920162197.7U CN209390021U (en) | 2019-01-30 | 2019-01-30 | A kind of charge voltage converter amplifier circuit and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920162197.7U CN209390021U (en) | 2019-01-30 | 2019-01-30 | A kind of charge voltage converter amplifier circuit and electronic device |
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| CN209390021U true CN209390021U (en) | 2019-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920162197.7U Active CN209390021U (en) | 2019-01-30 | 2019-01-30 | A kind of charge voltage converter amplifier circuit and electronic device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617532A (en) * | 2019-01-30 | 2019-04-12 | 宝鸡文理学院 | A kind of charge voltage converter amplifier circuit and electronic device |
| CN115021696A (en) * | 2022-08-02 | 2022-09-06 | 宁波中车时代传感技术有限公司 | Charge amplifier circuit and vibration sensor |
-
2019
- 2019-01-30 CN CN201920162197.7U patent/CN209390021U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617532A (en) * | 2019-01-30 | 2019-04-12 | 宝鸡文理学院 | A kind of charge voltage converter amplifier circuit and electronic device |
| CN115021696A (en) * | 2022-08-02 | 2022-09-06 | 宁波中车时代传感技术有限公司 | Charge amplifier circuit and vibration sensor |
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