CN200966033Y - Voltage-current conversion circuit - Google Patents
Voltage-current conversion circuit Download PDFInfo
- Publication number
- CN200966033Y CN200966033Y CN 200620010479 CN200620010479U CN200966033Y CN 200966033 Y CN200966033 Y CN 200966033Y CN 200620010479 CN200620010479 CN 200620010479 CN 200620010479 U CN200620010479 U CN 200620010479U CN 200966033 Y CN200966033 Y CN 200966033Y
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- pin
- resistance
- circuit
- triode
- positive supply
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Abstract
The utility model discloses a voltage current switching circuit which is composed of an emitter follower, a magnifying circuit and an output circuit which are connected mutually by a wire. The emitter follower receives signals outputted by the circuit before. After being processed, the signals can be transmitted to the magnifying circuit. The magnifying circuit magnifies and outputs the signal to the output circuit. The output circuit can transmit the signals to the next circuit. The utility model uses few components which can be easily acquired in market. In addition, the utility model has the advantages of simply structure, excellent performance, low cost and good adaptability to all conditions. Due to good linearity and strong driving property, the utility model has higher using value.
Description
Technical field
The utility model relates to a kind of current/charge-voltage convertor, belongs to electronic technology field.
Background technology
Known current/charge-voltage convertor shows as linear poor, poor anti jamming capability, driving force is poor, and the circuit design more complicated, the cost height, and manufacturability is poor, and performance is low.The current/charge-voltage convertor integrated chip price of function admirable is very expensive, and at a low price the performance of chip is very relatively poor, thereby is difficult to reach both guaranteed performances, keeps the needs of aspect such as with low cost again.
The utility model content
The purpose of this utility model provides that a kind of simple in structure, antijamming capability is strong, stability height, good linearity, current/charge-voltage convertor that driving force is strong.
For achieving the above object, the technical scheme that the utility model adopted is: current/charge-voltage convertor, it is characterized in that: described change-over circuit comprises emitter follower, amplifying circuit, output circuit, described emitter follower, amplifying circuit, output circuit are electrically connected, described emitter follower receives the signal of front stage circuits output, exports amplifying circuit after treatment to, and described amplifying circuit carries out processing and amplifying to signal, export output circuit to, export the next stage circuit to by output circuit.
Below be the improvement of technical solutions of the utility model:
Described emitter follower is by operational amplifier U1, resistance R 1, R2 forms, 3 pin of described operational amplifier U1 are input, 6 pin are output, 7 pin connect positive supply, 4 pin connect negative supply, 1 pin connects positive supply through resistance R 2,8 pin connect positive supply through resistance R 1, be connected with capacitor C 1 between 1 pin and 8 pin, 2 pin are connected with 6 pin, described amplifying circuit is by operational amplifier U2, resistance R 4～R12, capacitor C 2～C4 forms, 2 pin of described operational amplifier U2 are input, 6 pin are output, 7 pin connect positive supply, 4 pin connect negative supply, 1 pin connects positive supply through resistance R 8,8 pin connect positive supply through resistance R 7, be connected with capacitor C 3 between 1 pin and 8 pin, 3 pin are through resistance R 4 ground connection, be connected with the resistance R 5 of connecting between 2 pin and 3 pin, R6, R10, R11, R12, be connected with capacitor C 2 between 2 pin and 3 pin, described output circuit is by triode Q1, Q2, resistance R 13 is formed, the collector electrode of described triode Q1 is in parallel with the collector electrode of triode Q2 to connect positive supply through resistance R 13, the collector electrode of described triode Q1 and resistance R 5, the contact of R6 connects, the base stage of described triode Q1 is through parallel resistor R9, capacitor C 4 is connected with 6 pin of operational amplifier U2, and the base stage of described triode Q2 is connected with the collector electrode of triode Q1.
Beneficial effect: the utility model adopts said structure, have the following advantages: the components and parts of use are fewer, obtain than being easier on the market, have simple in structure, function admirable, cheap characteristics are suitable for various environment, because the utility model good linearity, driving force are strong, so the utlity model has higher use value.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing 1 is the block diagram of the utility model embodiment;
Accompanying drawing 2 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Embodiment, as shown in Figure 1, current/charge-voltage convertor, described change-over circuit comprises emitter follower, amplifying circuit, output circuit, and described emitter follower, amplifying circuit, output circuit are electrically connected, and described emitter follower receives the signal of front stage circuits output, export amplifying circuit after treatment to, described amplifying circuit carries out processing and amplifying to signal, exports output circuit to, exports the next stage circuit to by output circuit.
As shown in Figure 2, described emitter follower is by operational amplifier U1, resistance R 1, R2 forms, the model of operational amplifier U1 is OP07,3 pin of described operational amplifier U1 are input, 6 pin are output, 7 pin connect positive supply, 4 pin connect negative supply, 1 pin connects positive supply through resistance R 2,8 pin connect positive supply through resistance R 1, be connected with capacitor C 1 between 1 pin and 8 pin, 2 pin are connected with 6 pin, described amplifying circuit is by operational amplifier U2, resistance R 4～R12, capacitor C 2～C4 forms, the model of operational amplifier U2 is OP07,2 pin of described operational amplifier U2 are input, 6 pin are output, 7 pin connect positive supply, 4 pin connect negative supply, 1 pin connects positive supply through resistance R 8,8 pin connect positive supply through resistance R 7, be connected with capacitor C 3 between 1 pin and 8 pin, 3 pin are through resistance R 4 ground connection, be connected with the resistance R 5 of connecting between 2 pin and 3 pin, R6, R10, R11, R12, be connected with capacitor C 2 between 2 pin and 3 pin, described output circuit is by triode Q1, Q2, resistance R 13 is formed, and the model of triode Q1 is 9012, and the model of triode Q2 is 9013, the collector electrode of described triode Q1 is in parallel with the collector electrode of triode Q2 to connect positive supply through resistance R 13, the collector electrode of described triode Q1 and resistance R 5, the contact of R6 connects, and the base stage of described triode Q1 is through parallel resistor R9, capacitor C 4 is connected with 6 pin of operational amplifier U2, and the base stage of described triode Q2 is connected with the collector electrode of triode Q1.
Claims (2)
1, current/charge-voltage convertor, it is characterized in that: described change-over circuit comprises emitter follower, amplifying circuit, output circuit, described emitter follower, amplifying circuit, output circuit are electrically connected, described emitter follower receives the signal of front stage circuits output, export amplifying circuit after treatment to, described amplifying circuit carries out processing and amplifying to signal, exports output circuit to, exports the next stage circuit to by output circuit.
2, current/charge-voltage convertor as claimed in claim 1, it is characterized in that: described emitter follower is by operational amplifier U1, resistance R 1, R2 forms, 3 pin of described operational amplifier U1 are input, 6 pin are output, 7 pin connect positive supply, 4 pin connect negative supply, 1 pin connects positive supply through resistance R 2,8 pin connect positive supply through resistance R 1, be connected with capacitor C 1 between 1 pin and 8 pin, 2 pin are connected with 6 pin, described amplifying circuit is by operational amplifier U2, resistance R 4～R12, capacitor C 2～C4 forms, 2 pin of described operational amplifier U2 are input, 6 pin are output, 7 pin connect positive supply, 4 pin connect negative supply, 1 pin connects positive supply through resistance R 8,8 pin connect positive supply through resistance R 7, be connected with capacitor C 3 between 1 pin and 8 pin, 3 pin are through resistance R 4 ground connection, be connected with the resistance R 5 of connecting between 2 pin and 3 pin, R6, R10, R11, R12, be connected with capacitor C 2 between 2 pin and 3 pin, described output circuit is by triode Q1, Q2, resistance R 13 is formed, the collector electrode of described triode Q1 is in parallel with the collector electrode of triode Q2 to connect positive supply through resistance R 13, the collector electrode of described triode Q1 and resistance R 5, the contact of R6 connects, and the base stage of described triode Q1 is through parallel resistor R9, capacitor C 4 is connected with 6 pin of operational amplifier U2, and the base stage of described triode Q2 is connected with the collector electrode of triode Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010479 CN200966033Y (en) | 2006-10-08 | 2006-10-08 | Voltage-current conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010479 CN200966033Y (en) | 2006-10-08 | 2006-10-08 | Voltage-current conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200966033Y true CN200966033Y (en) | 2007-10-24 |
Family
ID=38870052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620010479 Expired - Fee Related CN200966033Y (en) | 2006-10-08 | 2006-10-08 | Voltage-current conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200966033Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425845A (en) * | 2017-05-08 | 2017-12-01 | 华为技术有限公司 | A kind of superposition circuit and floating voltage D/A converting circuit |
-
2006
- 2006-10-08 CN CN 200620010479 patent/CN200966033Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425845A (en) * | 2017-05-08 | 2017-12-01 | 华为技术有限公司 | A kind of superposition circuit and floating voltage D/A converting circuit |
| US10804923B2 (en) | 2017-05-08 | 2020-10-13 | Huawei Technologies Co., Ltd | Superposition operation circuit and float-voltage digital-to-analog conversion circuit |
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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: 20071024 Termination date: 20101008 |