CN204679893U - A kind of 4-20mA current generating apparatus be made up of integrated circuit - Google Patents
A kind of 4-20mA current generating apparatus be made up of integrated circuit Download PDFInfo
- Publication number
- CN204679893U CN204679893U CN201520387993.2U CN201520387993U CN204679893U CN 204679893 U CN204679893 U CN 204679893U CN 201520387993 U CN201520387993 U CN 201520387993U CN 204679893 U CN204679893 U CN 204679893U
- Authority
- CN
- China
- Prior art keywords
- electrical connection
- generating apparatus
- output terminal
- current generating
- input end
- 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
- Semiconductor Integrated Circuits (AREA)
Abstract
The utility model discloses a kind of 4-20mA current generating apparatus be made up of integrated circuit, comprise electric supply installation, the input end of the output terminal electrical connection 4-20mA current generating apparatus of described electric supply installation, the input end of the output terminal electrical connection regulating current device of described 4-20mA current generating apparatus, the input end of the output terminal electrical connection sampling resistor of described current regulator, the input end of the output terminal electrical connection processor of described sampling resistor, the input end of the output terminal electrical connection digital electronic ammeter of described processor.The 4-20mA current generating apparatus that should be made up of integrated circuit, sampling resistor electrical connection processor, processor electrical connection digital electronic ammeter, this structure can demonstrate the electric current that device produces more intuitively, integrated component is adopted to replace original discrete component, circuit design can be made to have simplify largely, simultaneously because the reliability of integrated component, stability improve greatly, device can be made to export more accurately and stable.
Description
Technical field
The utility model relates to the design and fabrication technology field of electronic equipment, is specially a kind of 4-20mA current generating apparatus be made up of integrated circuit.
Background technology
In the Process Control System of industry spot, control system is made up of a lot of module, as CPU (central processing unit), and load module, analog output, digital output etc.Need between disparate modules to carry out data communication, the simplest and maximum communication mode of employing is 4-20mA current ring communication mode.So, the design of instrument and equipment at the scene, debugging and operational phase, need a kind of adjustable 4-20mA current generating apparatus to simulate 4-20mA electric current required for generation, auxiliaryly carries out equipment de-sign, the debugging of system and maintenance, existing 4-20mA current generating apparatus is made up of discrete component, generally forms constant-current source circuit by triode or operational amplifier, mainly there is following problem: circuit uses components and parts more, cause circuit complicated, cause circuit integrity performance unstable thus; General operational amplifier needs dual power supply normally to work, so original device also needs to provide multichannel different voltage source, causes the further complexity of circuit; Original discrete component spread in performance is uneven, causes equipment easily to occur the problem that aging and failure rate is high; Element uses more, also makes equipment cost and design complexity rise.
Utility model content
The purpose of this utility model is to provide a kind of 4-20mA current generating apparatus be made up of integrated circuit, 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 4-20mA current generating apparatus be made up of integrated circuit, comprise electric supply installation, the input end of the output terminal electrical connection 4-20mA current generating apparatus of described electric supply installation, the input end of the output terminal electrical connection regulating current device of described 4-20mA current generating apparatus, the input end of the output terminal electrical connection sampling resistor of described current regulator, the input end of the output terminal electrical connection processor of described sampling resistor, the input end of the output terminal electrical connection digital electronic ammeter of described processor.
Preferably, described electric supply installation comprises DC24V power supply and AC220V power supply.
Preferably, the input end of the output terminal electrical connection inverter of described AC220V power supply.
Preferably, described 4-20mA current generating apparatus builds composition with integrated chip XTR115 and resistance, electric capacity, triode.
Compared with prior art, the beneficial effects of the utility model are: the 4-20mA current generating apparatus that should be made up of integrated circuit, adopt electric supply installation electrical connection 4-20mA current generating apparatus, 4-20mA current generating apparatus electrical connection regulating current device, the electric current that this device is produced is more stable, adopt sampling resistor electrical connection regulating current device, and sampling resistor electrical connection processor, processor electrical connection digital electronic ammeter, this structure can demonstrate the electric current that device produces more intuitively, integrated component is adopted to replace original discrete component, circuit design can be made to have simplify largely, simultaneously due to the reliability of integrated component, stability improves greatly, device can be made to export more accurately and stablize.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
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 other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, the utility model provides a kind of technical scheme: a kind of 4-20mA current generating apparatus be made up of integrated circuit, comprise electric supply installation, described electric supply installation comprises DC24V power supply and AC220V power supply, the input end of the output terminal electrical connection inverter of described AC220V power supply, the input end of the output terminal electrical connection 4-20mA current generating apparatus of described electric supply installation, described 4-20mA current generating apparatus is with integrated chip XTR115 and resistance, electric capacity, composition built by triode, adopt electric supply installation electrical connection 4-20mA current generating apparatus, 4-20mA current generating apparatus electrical connection regulating current device, the electric current that this device is produced is more stable, the input end of the output terminal electrical connection regulating current device of described 4-20mA current generating apparatus, the input end of the output terminal electrical connection sampling resistor of described current regulator, the input end of the output terminal electrical connection processor of described sampling resistor, the input end of the output terminal electrical connection digital electronic ammeter of described processor, adopt sampling resistor electrical connection regulating current device, and sampling resistor electrical connection processor, processor electrical connection digital electronic ammeter, this structure can demonstrate the electric current that device produces more intuitively.The 4-20mA current generating apparatus that should be made up of integrated circuit, integrated component is adopted to replace original discrete component, circuit design can be made to have simplify largely, simultaneously because the reliability of integrated component, stability improve greatly, device can be made to export more accurately and stable.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.
Claims (4)
1. the 4-20mA current generating apparatus be made up of integrated circuit, comprise electric supply installation, it is characterized in that: the input end of the output terminal electrical connection 4-20mA current generating apparatus of described electric supply installation, the input end of the output terminal electrical connection regulating current device of described 4-20mA current generating apparatus, the input end of the output terminal electrical connection sampling resistor of described current regulator, the input end of the output terminal electrical connection processor of described sampling resistor, the input end of the output terminal electrical connection digital electronic ammeter of described processor.
2. a kind of 4-20mA current generating apparatus be made up of integrated circuit according to claim 1, is characterized in that: described electric supply installation comprises DC24V power supply and AC220V power supply.
3. a kind of 4-20mA current generating apparatus be made up of integrated circuit according to claim 2, is characterized in that: the input end of the output terminal electrical connection inverter of described AC220V power supply.
4. a kind of 4-20mA current generating apparatus be made up of integrated circuit according to claim 1, is characterized in that: described 4-20mA current generating apparatus builds composition with integrated chip XTR115, resistance, electric capacity and triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387993.2U CN204679893U (en) | 2015-06-05 | 2015-06-05 | A kind of 4-20mA current generating apparatus be made up of integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387993.2U CN204679893U (en) | 2015-06-05 | 2015-06-05 | A kind of 4-20mA current generating apparatus be made up of integrated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204679893U true CN204679893U (en) | 2015-09-30 |
Family
ID=54179572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520387993.2U Expired - Fee Related CN204679893U (en) | 2015-06-05 | 2015-06-05 | A kind of 4-20mA current generating apparatus be made up of integrated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204679893U (en) |
-
2015
- 2015-06-05 CN CN201520387993.2U patent/CN204679893U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204391679U (en) | A kind of leakage current detection protection circuit | |
| CN202586343U (en) | Parallel power-source power unit | |
| CN101996120A (en) | Voltage margin test device | |
| CN203759106U (en) | Commercial power zero cross detection circuit | |
| CN203405750U (en) | Voltage stabilizing circuit and voltage stabilizing power supply device | |
| CN106645833A (en) | Battery voltage simulator used for debugging battery management system | |
| CN102789251B (en) | Current adjustable constant current circuit | |
| CN204679893U (en) | A kind of 4-20mA current generating apparatus be made up of integrated circuit | |
| CN205571673U (en) | Digitally controlled's contravariant gas shielded arc welding control circuit module | |
| CN103929061A (en) | Constant flow source with single power supply adjustable | |
| CN204514497U (en) | A kind of high-precision temperature testing circuit | |
| CN209992882U (en) | Output voltage adjustable power control circuit | |
| CN203645543U (en) | Programmable wide-input voltage-stabilized power supply based on operational amplifiers | |
| CN203812125U (en) | Two-wire system signal generator | |
| CN203386013U (en) | Redundancy output device | |
| CN206759414U (en) | Single-ended analog input interface circuit | |
| CN201440168U (en) | E-load machine | |
| CN206759416U (en) | Difference type analog input interface circuit | |
| CN203849635U (en) | LDO replacement circuit of discrete device | |
| CN205356289U (en) | Time delay automatic shutdown security circuit | |
| CN203748077U (en) | High voltage linear power current compensation circuit | |
| CN203689185U (en) | Laser temperature control system | |
| CN206547147U (en) | The light-operated automatic gain device of single-chip microcomputer | |
| CN202583930U (en) | Circuit capable of dynamically adjusting working current of power device | |
| CN206517382U (en) | One kind improves PSR output dynamic load potential circuits |
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: 20150930 Termination date: 20160605 |