CN204613802U - A kind of voltage-current converter circuit - Google Patents
A kind of voltage-current converter circuit Download PDFInfo
- Publication number
- CN204613802U CN204613802U CN201520336385.9U CN201520336385U CN204613802U CN 204613802 U CN204613802 U CN 204613802U CN 201520336385 U CN201520336385 U CN 201520336385U CN 204613802 U CN204613802 U CN 204613802U
- Authority
- CN
- China
- Prior art keywords
- resistance
- chip
- potentiometer
- pin
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses a kind of voltage-current converter circuit, comprise resistance R1, diode D1, triode V1 and chip IC 1, one end connection signal input end IN of described resistance R1, the other end contact resistance R2 of resistance R1 and the pin 3 of chip IC 1, the pin 1 contact resistance R3 of chip IC 1, the other end ground connection of resistance R3, the other end of resistance R2 connects a stiff end of potentiometer RP1.The utility model voltage-current converter circuit structure is simple, components and parts are few, the constant current output circuit formed by using amplifier reduces the current loss and voltage error that produce in signals transmission, thus ensure that Signal transmissions precision, therefore have that structure is simple, cost of manufacture is low, the advantage of stable output.
Description
Technical field
The utility model relates to a kind of change-over circuit, specifically a kind of voltage-current converter circuit.
Background technology
When long distance transmits analog voltage signal, because singal source resistance and cable resistance produce pressure drop, the lower relative pressure drop of trusted end input impedance is larger, and error is also larger.Transmit voltage signal to high precision, voltage signal first must be become current signal, namely carry out electric current transmission.Therefore need to use voltage-current converter circuit, the most complex structure of traditional change-over circuit, components and parts are more, not only bad for cost-saving, and have certain attenuation to the signal of transmission, thus affect the precision of Signal transmissions.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the voltage-current converter circuit of stable performance, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of voltage-current converter circuit, comprise resistance R1, diode D1, triode V1 and chip IC 1, one end connection signal input end IN of described resistance R1, the other end contact resistance R2 of resistance R1 and the pin 3 of chip IC 1, the pin 1 contact resistance R3 of chip IC 1, the other end ground connection of resistance R3, the other end of resistance R2 connects a stiff end of potentiometer RP1, another stiff end contact resistance R7 of potentiometer RP1, the sliding end of potentiometer RP1 and the pin 5 of chip IC 1, the other end contact resistance R5 of resistance R7, the pin 3 of resistance R6 and chip IC 2, the pin 1 contact resistance R8 of chip IC 2 and resistance R9, the other end ground connection of resistance R8, the other end of resistance R5 connects the sliding end of potentiometer RP3, a stiff end contact resistance R4 of potentiometer RP3 and the anode of diode D1, the negative electrode of diode D1 connects another stiff end of potentiometer RP3 and ground connection, the other end of resistance R4 connects power supply V-, the other end of resistance R6 connects a stiff end of potentiometer RP2, the sliding end of potentiometer RP2 connects another stiff end of potentiometer RP2, resistance R11, the anode of diode D2 and the emitter of triode VT1, the pin 5 contact resistance R10 of chip IC 2, the other end contact resistance R10 of resistance R10, the other end of resistance R10 connects the negative electrode of diode D2 and the base stage of triode VT1, the other end of the other end contact resistance R11 of resistance R9, the negative electrode of diode D3 and output terminal OUT.
As preferred version of the present utility model: the model of described chip IC 1 and chip IC 2 is LM321.
Compared with prior art, the beneficial effects of the utility model are: the utility model voltage-current converter circuit structure is simple, components and parts are few, the constant current output circuit formed by using amplifier reduces the current loss and voltage error that produce in signals transmission, thus ensure that Signal transmissions precision, therefore have that structure is simple, cost of manufacture is low, the advantage of stable output.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of voltage-current converter circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of voltage-current converter circuit, comprise resistance R1, diode D1, triode V1 and chip IC 1, one end connection signal input end IN of described resistance R1, the other end contact resistance R2 of resistance R1 and the pin 3 of chip IC 1, the pin 1 contact resistance R3 of chip IC 1, the other end ground connection of resistance R3, the other end of resistance R2 connects a stiff end of potentiometer RP1, another stiff end contact resistance R7 of potentiometer RP1, the sliding end of potentiometer RP1 and the pin 5 of chip IC 1, the other end contact resistance R5 of resistance R7, the pin 3 of resistance R6 and chip IC 2, the pin 1 contact resistance R8 of chip IC 2 and resistance R9, the other end ground connection of resistance R8, the other end of resistance R5 connects the sliding end of potentiometer RP3, a stiff end contact resistance R4 of potentiometer RP3 and the anode of diode D1, the negative electrode of diode D1 connects another stiff end of potentiometer RP3 and ground connection, the other end of resistance R4 connects power supply V-, the other end of resistance R6 connects a stiff end of potentiometer RP2, the sliding end of potentiometer RP2 connects another stiff end of potentiometer RP2, resistance R11, the anode of diode D2 and the emitter of triode VT1, the pin 5 contact resistance R10 of chip IC 2, the other end contact resistance R10 of resistance R10, the other end of resistance R10 connects the negative electrode of diode D2 and the base stage of triode VT1, the other end of the other end contact resistance R11 of resistance R9, the negative electrode of diode D3 and output terminal OUT.
The model of described chip IC 1 and chip IC 2 is LM321.
Principle of work of the present utility model is: the principle of constant current output circuit is: suppose that the impedance in circuit is 100 Ω, equal because transmitting electric current in circuit, then there is no current loss, voltage error can not be produced, generally voltage is become 4mA(0%) and electric current 20mA(100%) transmit, this circuit chips IC2 and peripheral cell composition constant current output circuit thereof, with resistance R11, electric current is converted to voltage, the output of chip IC 2 divides two parts, the drift of 4mA and the input signal of 0 ~-1.6V, during without input signal, chip IC 2 adds the bias current of 4mA, when there being signal to input, voltage signal enters circuit to carry out after Voltage to current transducer again by the current signal of constant current output circuit from OUT port stable output, circuit structure is simple, components and parts are few, the constant current output circuit formed by using amplifier reduces the current loss and voltage error that produce in signals transmission, thus ensure that Signal transmissions precision, therefore there is structure simple, cost of manufacture is low, the advantage of stable output.
Claims (2)
1. a voltage-current converter circuit, comprises resistance R1, diode D1, triode V1 and chip IC 1, it is characterized in that, one end connection signal input end IN of described resistance R1, the other end contact resistance R2 of resistance R1 and the pin 3 of chip IC 1, the pin 1 contact resistance R3 of chip IC 1, the other end ground connection of resistance R3, the other end of resistance R2 connects a stiff end of potentiometer RP1, another stiff end contact resistance R7 of potentiometer RP1, the sliding end of potentiometer RP1 and the pin 5 of chip IC 1, the other end contact resistance R5 of resistance R7, the pin 3 of resistance R6 and chip IC 2, the pin 1 contact resistance R8 of chip IC 2 and resistance R9, the other end ground connection of resistance R8, the other end of resistance R5 connects the sliding end of potentiometer RP3, a stiff end contact resistance R4 of potentiometer RP3 and the anode of diode D1, the negative electrode of diode D1 connects another stiff end of potentiometer RP3 and ground connection, the other end of resistance R4 connects power supply V-, the other end of resistance R6 connects a stiff end of potentiometer RP2, the sliding end of potentiometer RP2 connects another stiff end of potentiometer RP2, resistance R11, the anode of diode D2 and the emitter of triode VT1, the pin 5 contact resistance R10 of chip IC 2, the other end contact resistance R10 of resistance R10, the other end of resistance R10 connects the negative electrode of diode D2 and the base stage of triode VT1, the other end of the other end contact resistance R11 of resistance R9, the negative electrode of diode D3 and output terminal OUT.
2. a kind of voltage-current converter circuit according to claim 1, is characterized in that, the model of described chip IC 1 and chip IC 2 is LM321.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336385.9U CN204613802U (en) | 2015-05-23 | 2015-05-23 | A kind of voltage-current converter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336385.9U CN204613802U (en) | 2015-05-23 | 2015-05-23 | A kind of voltage-current converter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204613802U true CN204613802U (en) | 2015-09-02 |
Family
ID=53966343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520336385.9U Expired - Fee Related CN204613802U (en) | 2015-05-23 | 2015-05-23 | A kind of voltage-current converter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204613802U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165634A (en) * | 2018-01-30 | 2019-08-23 | 国网山东省电力公司烟台供电公司 | A kind of transformer high overload merges circuit with on-load voltage regulation |
| CN116719266A (en) * | 2023-08-09 | 2023-09-08 | 浙江国利信安科技有限公司 | Control apparatus |
-
2015
- 2015-05-23 CN CN201520336385.9U patent/CN204613802U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165634A (en) * | 2018-01-30 | 2019-08-23 | 国网山东省电力公司烟台供电公司 | A kind of transformer high overload merges circuit with on-load voltage regulation |
| CN116719266A (en) * | 2023-08-09 | 2023-09-08 | 浙江国利信安科技有限公司 | Control apparatus |
| CN116719266B (en) * | 2023-08-09 | 2023-11-03 | 浙江国利信安科技有限公司 | Control apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205229291U (en) | Voltage signal collection system | |
| CN204613802U (en) | A kind of voltage-current converter circuit | |
| CN204652315U (en) | A kind of high-power amplifier drive circuit | |
| CN104076853B (en) | A kind of constant-current source circuit | |
| CN203785804U (en) | Three-wire remote temperature measuring circuit based on digital temperature sensor | |
| CN204334501U (en) | A kind of push-pull type high resistant isolated amplifier | |
| CN204425314U (en) | A kind of opto-coupled feedback isolator | |
| CN204215202U (en) | A kind of low cost, high precision 4 ~ 20mA current signal output circuit | |
| CN109374965B (en) | Single infrared diode communication circuit | |
| CN204482025U (en) | A kind of audio amplifier circuit | |
| CN206547077U (en) | A kind of microphone preamplifier | |
| CN205195667U (en) | Intercom power amplification circuit | |
| CN204425315U (en) | A kind of photoisolator | |
| CN204334521U (en) | A kind of signal processing circuit plate of encoder | |
| CN204517686U (en) | Voltage stabilizing full-wave rectifying circuit | |
| CN206573967U (en) | A kind of positive and negative adjustable D.C. regulated power supply | |
| CN219718527U (en) | High-precision 0-10V dimming control circuit | |
| CN204886882U (en) | Preamplifier | |
| CN205028114U (en) | Simulation electronic switching circuit of transmissible bipolar signal | |
| CN204518082U (en) | A kind of low cost stereophonic deaf-aid | |
| CN203086410U (en) | Zero-output large dynamic wide-band amplifier circuit | |
| CN207530780U (en) | Computer with photoelectricity amplification | |
| CN204465474U (en) | A kind of automatic gain control circuit | |
| CN217543226U (en) | Direct current voltage signal sampling circuit based on nonlinear optical coupling isolation | |
| CN204559533U (en) | A kind of delay circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20170523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |