CN206178519U - 0 10V voltage signal changes 10mA electric current signal circuit - Google Patents
0 10V voltage signal changes 10mA electric current signal circuit Download PDFInfo
- Publication number
- CN206178519U CN206178519U CN201621227708.1U CN201621227708U CN206178519U CN 206178519 U CN206178519 U CN 206178519U CN 201621227708 U CN201621227708 U CN 201621227708U CN 206178519 U CN206178519 U CN 206178519U
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- resistance
- amplifier
- circuit
- voltage
- follower
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Abstract
The utility model provides a 0 10V voltage signal changes 10mA electric current signal circuit, change the current circuit including additive operation circuit and the voltage that has two voltage follower, the additive operation circuit inserts U1's inverting input end and output, ground connection behind amplifier U1's the 9th resistance of non inverting input end series connection including the resistance circuit and the proportion amplifier circuit that are connected, resistance circuit respectively by two the 6th parallelly connected resistance and the 7th resistors, the 8th resistance both ends. Voltage commentaries on classics current circuit includes the amplifier circuit of second amplifier U2 component, the voltage follower that amplifier U3 constitutes, the 2nd voltage follower that amplifier U4 forms, and is parallelly connected with the second amplifier after a voltage follower and the R4 series connection, parallelly connected with the second amplifier after the 2nd voltage follower and R2, the R5 series connection. The utility model provides a 0 10V voltage signal changes 10mA electric current signal circuit, it is simple reliable, can be applied to various 10mA current control equipment, conversion accuracy is high, the transmission and the control of the signal of being convenient for.
Description
Technical field
The utility model is related to electronic circuit field, and more particularly to 0-10V voltage signals turn ± 10mA current signal circuits.
Background technology
In long-distance transmissions, voltage signal is easily subject to external interference to voltage signal, causes signal inaccurate, and electric current
Signal is then not susceptible to interference.Current many industrial control unit (ICU)s generally have 0-10V voltage output functions, reduce control signal and are passing
The interference of defeated process, for controller and the connectivity problem and signal transmission issues of controlled device, it is therefore desirable to provide a kind of electricity
Voltage signal can be converted into current signal by road, carry out long-distance transmissions, complete controller to control connection between control device.
Utility model content
For existing 0-10V voltage signals in long-distance transmissions, it is vulnerable to the problem of external interference, the utility model is carried
Voltage signal can be converted into current signal for a kind of circuit.
0-10V voltage signals turn ± 10mA current signals circuit it is characterised in that it includes the biasing circuit that is connected and
Voltage-current conversion circuit with voltage follower；Biasing circuit includes the resistance circuit and amplifying circuit that are connected, resistance electricity
6th resistance and the 7th resistance composition of two parallel connections of route, amplifier circuit is by the first amplifier U1 and the 8th resistor coupled in parallel group
The inverting input and output end of U1 are respectively connected into, the 8th resistance two ends, the in-phase input end series connection one of amplifier U1 the
Nine resistance are simultaneously grounded；Described Voltage-current conversion circuit includes the second amplifier U2 and two voltage followers U3, U4 successively
And 5 resistance such as R1, R2, R3, R4, R5,3rd resistor one end the first amplifier U2 output end, one end connect the second amplifier
U2 inverting inputs, the second amplifier in-phase input end one first resistor of series winding is simultaneously grounded, and R2 one end connects the second follower
Output end, one end connection the second amplifier input in the same direction, R4 one end connects the first follower output end, one end connection second and puts
Big device reverse input end, the first follower input in the same direction connects the second amplifier out, and R5 one end connects the second follower
Input in the same direction, one end connect the second amplifier out.All operational amplifier V+ connect+15V voltages, V- connection -15V electricity
Pressure.
Described R1, R2, R3, R4 resistance is 10 kilohms, and the 5th resistance R5 is 100 ohm, and the 6th resistance R6 is
15 kilohms, the 7th resistance R7 is 5 kilohms, and the 8th resistance R8 and the 9th resistance R9 is 1 kilohm, and the tenth resistance R10 is 500
Ohm.
The first described amplifier U1 and the second amplifier U2 and follower U3 and U4 model are TL082CP.
6th resistance R6 input voltages are -15V, and the 7th resistance R7 input voltages are between 0-10V.
The utility model has an advantageous effect in that：
The utility model provides a kind of 0-10V voltage signals and turns ± 10mA current signal circuits, simple and reliable, and output
Electric current it is not affected by a load, be easy in various instrument, instrument for 0-10V voltage signals to change into ± 10mA current signals,
The current signal high precision of conversion, is easy to transmission, measurement and the control of signal.
Brief description of the drawings
Fig. 1 is the circuit structure diagram that 0-10V voltage signals turn ± 10mA current signal circuits.
Specific embodiment
The utility model is specifically described below in conjunction with the accompanying drawings：
With reference to Fig. 1,0-10V voltage signals turn ± 10mA current signal circuits, including the adder operation circuit being connected with
And the Voltage-current conversion circuit with voltage follower.
Adder operation circuit includes the resistance circuit and scaling circuit that are connected, and resistance circuit is by the of two parallel connections
Six resistance and the 7th resistance are constituted, and amplifier circuit is made up of the first amplifier U1 and the 8th resistor coupled in parallel, the 8th resistance one end
Access the inverting input of U1, one end and connect the output end of the first amplifier, the in-phase input end series connection one of amplifier U1 the
Nine resistance are simultaneously grounded.
Voltage-current conversion circuit include successively the second amplifier U2 and two voltage followers U3, U4 and R1, R2,
5 resistance such as R3, R4, R5, the connection of 3rd resistor one end the first amplifier U1 output ends and the second amplifier U2 inverting inputs,
Second amplifier in-phase input end, one first resistor of series winding is simultaneously grounded, and R2, R4 are respectively the positive and negative feedback electricity of the second amplifier
Resistance, is respectively connected to U3, U4 voltage follower on two feedback circuits, and R5 one end connects the second amplifier out, one end and connects
The second follower input in the same direction is connect, the input in the same direction of the second follower is current output terminal mouthful.Four amplifiers are provided with
± 15V direct current independent voltages.
R1, R2, R3, R4 resistance are 10 kilohms, and the 5th resistance R5 is 100 ohm, and the 6th resistance R6 is 15 kilo-ohms
Nurse, the 7th resistance R7 is 5 kilohms, and the 8th resistance R8 and the 9th resistance R9 is 1 kilohm, and the tenth resistance R10 is 500 ohm.
6th resistance R6 input voltages are -15V, and the 7th resistance R7 input voltages are between 0-10V.
First amplifier U1 and the second amplifier U2 and follower U3 and U4 model are TL082CP.
The output voltage of the first amplifier is
The voltage of U1 is computed -1V to+1V between 0-10V.
Current output terminal
The current value for being computed I is ± 10mA
The utility model provides a kind of 0-10V voltage signals and turns ± 10mA current signal circuits, simple and reliable, and output
Electric current it is not affected by a load, be easy in various instrument, instrument for 0-10V voltage signals to change into ± 10mA current signals,
The current signal high precision of conversion, is easy to transmission, measurement and the control of signal.
Described above is not to use new limitation to this, and the utility model is also not limited to the example above, this skill
Change, remodeling, addition or replacement that the technical staff in art field is made in essential scope of the present utility model, should belong to this
The protection domain of utility model.
Claims (4)
1.0-10V voltage signals turn ± 10mA current signal circuits, it is characterised in that including the adder operation circuit that is connected with
And the Voltage-current conversion circuit with voltage follower；Adder operation circuit includes the resistance circuit and amplifying circuit that are connected,
Resistance circuit is made up of the 6th resistance and the 7th resistance of two parallel connections, and adder operation circuit is by the electricity of the first amplifier U1 and the 8th
Resistance is composed in parallel, and the 8th resistance two ends are respectively connected to the inverting input and output end of U1, the in-phase input end string of amplifier U1
One the 9th resistance of connection is simultaneously grounded；Described Voltage-current conversion circuit includes the second amplifier U2 and two voltage follows successively
5 resistance such as device U3, U4 and R1, R2, R3, R4, R5,3rd resistor one end connection the first amplifier U1 output ends and second are put
The inverting input of big device U2, the second amplifier in-phase input end one first resistor of series winding is simultaneously grounded, R2 one end connection second
Follower output end, one end connection the second amplifier input in the same direction, R4 one end connects the first follower output end, one end connection
Second amplifier inverting input, the first follower input in the same direction connects the second amplifier out, R5 one end connection second
Follower input in the same direction, one end connect the second amplifier out, the second follower input connection load port in the same direction, institute
There is operational amplifier V+ to connect+15V voltages, V- connection -15V voltages.
2. 0-10V voltage signals according to claim 1 turn ± 10mA current signal circuits, it is characterised in that described
R1, R2, R3, R4 resistance are 10 kilohms, and the 5th resistance R5 is 100 ohm, and the 6th resistance R6 is 15 kilohms, the 7th electricity
Resistance R7 is 5 kilohms, and the 8th resistance R8 and the 9th resistance R9 is 1 kilohm, and the tenth resistance R10 is 500 ohm.
3. 0-10V voltage signals according to claim 1 turn ± 10mA current signal circuits, it is characterised in that described
First amplifier U1 and the second amplifier U2 and follower U3 and U4 model are TL082CP.
4. 0-10V voltage signals according to claim 1 turn ± 10mA current signal circuits, it is characterised in that the 6th electricity
Resistance R6 input voltages are -15V, and the 7th resistance R7 input voltages are between 0-10V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621227708.1U CN206178519U (en) | 2016-11-15 | 2016-11-15 | 0 10V voltage signal changes 10mA electric current signal circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621227708.1U CN206178519U (en) | 2016-11-15 | 2016-11-15 | 0 10V voltage signal changes 10mA electric current signal circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206178519U true CN206178519U (en) | 2017-05-17 |
Family
ID=58684038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621227708.1U Expired - Fee Related CN206178519U (en) | 2016-11-15 | 2016-11-15 | 0 10V voltage signal changes 10mA electric current signal circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206178519U (en) |
-
2016
- 2016-11-15 CN CN201621227708.1U patent/CN206178519U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20171115 |