CN204615774U - A kind of sensor signal amplifying circuit - Google Patents
A kind of sensor signal amplifying circuit Download PDFInfo
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- CN204615774U CN204615774U CN201520116554.8U CN201520116554U CN204615774U CN 204615774 U CN204615774 U CN 204615774U CN 201520116554 U CN201520116554 U CN 201520116554U CN 204615774 U CN204615774 U CN 204615774U
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- triode
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- collector electrode
- resistance
- amplifying circuit
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model relates to amplifying circuit technical field, especially a kind of sensor signal amplifying circuit.It comprises the first triode, the second triode, the 5th triode, the 8th triode, the 11 triode, the 12 triode, the 13 triode, the 14 triode and control and compensation circuit; The collector electrode of the 5th triode is connected with the collector electrode of the 11 triode and is connected with the emitter of the first triode and the emitter of the second triode respectively by the first resistance and the second resistance, the emitter of the second triode is connected with the output of control and compensation circuit, and the input of control and compensation circuit is connected with the emitter of the 12 triode; The collector electrode of the first triode is connected with the base stage of the 8th triode, and the emitter of the 13 triode is connected with the emitter of the 14 triode, and the collector electrode of the 14 triode is connected with the emitter of the 12 triode.The utility model circuit structure is simple, and output impedance is little, has very strong practicality.
Description
Technical field
The utility model relates to amplifying circuit technical field, especially a kind of sensor signal amplifying circuit.
Background technology
As everyone knows, through development for many years, transducer has become the important devices of a kind of industry and medical treatment detection.The primary output signal of its transducer is smaller, and can temperature drift be produced, the accuracy of signal is also just had a greatly reduced quality, so amplifying circuit need be utilized to carry out signal amplify process, but the gain of general amplifying circuit is excessive, further, input signal will be very large by the impact of the factor such as temperature and noise, causes output signal to be difficult to accurately be detected.
Utility model content
For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of sensor signal amplifying circuit.
To achieve these goals, the utility model adopts following technical scheme:
A kind of sensor signal amplifying circuit, it comprises the first triode, the second triode, the 3rd triode, the 4th triode, the 5th triode, the 6th triode, the 7th triode, the 8th triode, the 9th triode, the tenth triode, the 11 triode, the 12 triode, the 13 triode, the 14 triode and control and compensation circuit;
The emitter of described 5th triode and the collector electrode access power supply of the 12 triode, the emitter of described 6th triode and the 7th triode is by the 5th resistance access power supply, the collector electrode of described 5th triode is connected with the collector electrode of the 11 triode and is connected with the emitter of the first triode and the emitter of the second triode respectively by the first resistance and the second resistance, the emitter of described second triode is connected with the output of control and compensation circuit, and the input of described control and compensation circuit is connected with the emitter of the 12 triode;
The collector electrode of described first triode is connected with the collector electrode of the 3rd triode and the base stage of the 8th triode simultaneously, the emitter of described 8th triode is connected with the collector electrode of the 6th triode, the collector electrode of described 7th triode is connected with the emitter of the 9th triode, and the base stage of described 9th triode is connected with the collector electrode of the second triode and the collector electrode of the 4th triode simultaneously;
The collector electrode of described 5th triode is also connected with the collector electrode of the tenth triode, the emitter of described tenth triode is connected with the base stage of the 11 triode and the collector electrode of the 13 triode simultaneously, the emitter of described 13 triode is connected with the emitter of the 14 triode, and the collector electrode of described 14 triode is connected with the emitter of the 12 triode;
The emitter of described 3rd triode, the 4th triode, the 11 triode and the 14 triode is respectively by the 3rd resistance, the 4th resistance, the 6th resistance and the 7th grounding through resistance, the base stage of described 8th triode and the 9th triode respectively by the first electric capacity and the second capacity earth, the grounded collector of described 9th triode.
Owing to have employed such scheme, the utility model is by the first triode and the second triode composition input difference pair, 3rd triode and the 4th triode are current source load, utilize the 3rd resistance and the 4th resistance to determine the electric current of the 3rd triode and the 4th triode branch road; Meanwhile, the 8th triode and the 9th triode are buffer stage, are biased by two current sources; Further, make the electric current of the first triode and the second triode branch road be unlikely to excessive by the 11 triode and cause the second resistance control end voltage and the first resistance terminal voltage phase difference excessive; In addition, the structure of the 12 triode periphery is emitter follower structure, enables the output impedance that circuit provides very low, and its structure is simple, easy to operate, has very strong practicality.
Accompanying drawing explanation
Fig. 1 is the circuit principle structure schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 1, a kind of sensor signal amplifying circuit, it comprises the first triode Q1, the second triode Q2, the 3rd triode Q3, the 4th triode Q4, the 5th triode Q5, the 6th triode Q6, the 7th triode Q7, the 8th triode Q8, the 9th triode Q9, the tenth triode Q10, the 11 triode Q11, the 12 triode Q12, the 13 triode Q13, the 14 triode Q14 and control and compensation circuit H;
The emitter of the 5th triode Q5 and the collector electrode access power supply of the 12 triode Q12, the emitter of the 6th triode Q6 and the 7th triode Q7 accesses power supply by the 5th resistance R5, the collector electrode of the 5th triode Q5 is connected with the collector electrode of the 11 triode Q11 and is connected with the emitter of the first triode Q1 and the emitter of the second triode Q2 respectively by the first resistance R1 and the second resistance R2, the emitter of the second triode Q2 is connected with the output of control and compensation circuit H, and the input of control and compensation circuit H is connected with the emitter of the 12 triode Q12;
The collector electrode of the first triode Q1 is connected with the collector electrode of the 3rd triode Q3 and the base stage of the 8th triode Q8 simultaneously, the emitter of the 8th triode Q8 is connected with the collector electrode of the 6th triode Q6, the collector electrode of the 7th triode Q7 is connected with the emitter of the 9th triode Q7, and the base stage of the 9th triode Q9 is connected with the collector electrode of the second triode Q2 and the collector electrode of the 4th triode Q4 simultaneously;
The collector electrode of the 5th triode Q5 is also connected with the collector electrode of the tenth triode Q13, the emitter of the tenth triode Q10 is connected with the base stage of the 11 triode Q11 and the collector electrode of the 13 triode Q13 simultaneously, the emitter of the 13 triode Q13 is connected with the emitter of the 14 triode Q14, and the collector electrode of the 14 triode Q14 is connected with the emitter of the 12 triode Q12;
The emitter of the 3rd triode Q3, the 4th triode Q4, the 11 triode Q11 and the 14 triode Q14 is respectively by the 3rd resistance R3, the 4th resistance R4, the 6th resistance R6 and the 7th resistance R7 ground connection, the base stage of the 8th triode Q8 and the 9th triode Q9 respectively by the first electric capacity C1 and the second electric capacity C2 ground connection, the grounded collector of the 9th triode Q9.
The present embodiment forms input difference pair by the first triode Q1 and the second triode Q2,3rd triode Q3 and the 4th triode Q4 is current source load, utilizes the 3rd resistance R3 and the 4th resistance R4 to determine the electric current of the 3rd triode Q3 and the 4th triode Q4 branch road; Meanwhile, the 8th triode Q8 and the 9th triode Q9 is buffer stage, is biased by two current sources, and the Main Function of buffer stage is level shift and improves forward gain.13 triode Q13 and the 14 pole Q14 pipe are the current source load of the tenth triode Q10 and 12 triode Q12.Further, make the electric current of the first triode Q1 and the second triode Q2 branch road be unlikely to excessive by the 11 triode Q11 and cause the second resistance R2 control end voltage and the first resistance R1 terminal voltage to have big difference; In addition, the structure of the 12 triode Q12 periphery is emitter follower structure, enables the output impedance that circuit provides very low.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. a sensor signal amplifying circuit, is characterized in that: it comprises the first triode, the second triode, the 3rd triode, the 4th triode, the 5th triode, the 6th triode, the 7th triode, the 8th triode, the 9th triode, the tenth triode, the 11 triode, the 12 triode, the 13 triode, the 14 triode and control and compensation circuit;
The emitter of described 5th triode and the collector electrode access power supply of the 12 triode, the emitter of described 6th triode and the 7th triode is by the 5th resistance access power supply, the collector electrode of described 5th triode is connected with the collector electrode of the 11 triode and is connected with the emitter of the first triode and the emitter of the second triode respectively by the first resistance and the second resistance, the emitter of described second triode is connected with the output of control and compensation circuit, and the input of described control and compensation circuit is connected with the emitter of the 12 triode;
The collector electrode of described first triode is connected with the collector electrode of the 3rd triode and the base stage of the 8th triode simultaneously, the emitter of described 8th triode is connected with the collector electrode of the 6th triode, the collector electrode of described 7th triode is connected with the emitter of the 9th triode, and the base stage of described 9th triode is connected with the collector electrode of the second triode and the collector electrode of the 4th triode simultaneously;
The collector electrode of described 5th triode is also connected with the collector electrode of the tenth triode, the emitter of described tenth triode is connected with the base stage of the 11 triode and the collector electrode of the 13 triode simultaneously, the emitter of described 13 triode is connected with the emitter of the 14 triode, and the collector electrode of described 14 triode is connected with the emitter of the 12 triode;
The emitter of described 3rd triode, the 4th triode, the 11 triode and the 14 triode is respectively by the 3rd resistance, the 4th resistance, the 6th resistance and the 7th grounding through resistance, the base stage of described 8th triode and the 9th triode respectively by the first electric capacity and the second capacity earth, the grounded collector of described 9th triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520116554.8U CN204615774U (en) | 2015-02-26 | 2015-02-26 | A kind of sensor signal amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520116554.8U CN204615774U (en) | 2015-02-26 | 2015-02-26 | A kind of sensor signal amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204615774U true CN204615774U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520116554.8U Expired - Fee Related CN204615774U (en) | 2015-02-26 | 2015-02-26 | A kind of sensor signal amplifying circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204615774U (en) |
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2015
- 2015-02-26 CN CN201520116554.8U patent/CN204615774U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170510 Address after: 255086 Shandong Province, Zibo city Zhangdian District high tech Zone Wanjie Road No. 125 Patentee after: SHANDONG LIANNENG ELECTRIC POWER DESIGN Co.,Ltd. Address before: 255000 Shandong city of Zibo province high tech Zone Wanjie Road No. 125 Patentee before: ZIBO LIANNENG ELECTRIC POWER DESIGN INSTITUTE |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |