CN206640339U - A kind of portable hand-held formula current output device - Google Patents
A kind of portable hand-held formula current output device Download PDFInfo
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- CN206640339U CN206640339U CN201720252575.1U CN201720252575U CN206640339U CN 206640339 U CN206640339 U CN 206640339U CN 201720252575 U CN201720252575 U CN 201720252575U CN 206640339 U CN206640339 U CN 206640339U
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- supply voltage
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- voltage
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Abstract
A kind of portable hand-held formula current output device, it includes charging module, battery, DC/DC power modules, current amplifier and CPU module, charging module is used to charge a battery, battery provides supply voltage for DC/DC power modules, it is multiple-output electric power voltage that DC/DC power modules, which are used for the voltage conversion of battery, multiple-output electric power voltage includes first via output supply voltage and the second road output supply voltage, first via output supply voltage is used to provide supply voltage for current amplifier, second road output supply voltage is used to provide supply voltage for CPU module；The signal output part of CPU module through a D the signal input part of A modular converters and current amplifier connect, CPU module is provided with the keyboard for input signal.The utility model portable hand-held formula current output device has the characteristics that small volume and in light weight, is easy to carry, and easy to operate without external power supply, solves the problems, such as to need external AC power supply when conventional relay-protection tester uses out of doors.
Description
Technical field
It the utility model is related to a kind of portable hand-held formula current output device.
Background technology
At present, whether the wiring of secondary loop of mutual inductor is correctly mainly tested using the method for current injection of circuits
Card, current load usually is carried out to secondary loop of mutual inductor using relay-protection tester.The protection of in the market main flow
Tester result in protection tester body due to function more (the general function with electric current, voltage and output switch parameter)
Product is bigger than normal, and it is inconvenient to carry.And existing protection tester is required for external power supply to work, and is especially opened in Outdoor Trusses For Transformer Substation
Field is closed, when carrying out current load to secondary loop of mutual inductor using protection tester, also needs to find temporary source, multiple
When place development works, often take considerable time and do homework, significantly reduce the efficiency of work.
In view of this, it is necessory to provide a kind of portable hand-held formula current output device.
Utility model content
The purpose of this utility model is to provide a kind of portable hand-held formula current output device, easy to carry and come with power supply
Module, and power module can be charged.
To achieve the above object, the utility model adopts the technical scheme that：
A kind of portable hand-held formula current output device, it includes charging module, battery, DC/DC power modules, electric current and put
Big device and CPU module, charging module are used to charge a battery, and battery provides supply voltage for DC/DC power modules,
It is multiple-output electric power voltage that DC/DC power modules, which are used for the voltage conversion of battery, and multiple-output electric power voltage includes the
Output supply voltage and the second road output supply voltage all the way, first via output supply voltage are used to provide electricity for current amplifier
Source voltage, the second road output supply voltage are used to provide supply voltage for CPU module；The signal output part of CPU module through a D A
The signal input part of modular converter and current amplifier connects, and CPU module is provided with the keyboard for input signal.
In the utility model, using battery as power supply, then changed by DC/DC electric power source pair of module batteries
For multiple-output electric power voltage, road output supply voltage is respectively that current amplifier and CPU module provide power supply and supported, and electric current
The signal that amplifier provides according to CPU module carries out electric current output, and whole process very convenient carrying, makes without external power supply
Without external power supply when carrying out current load to secondary loop of mutual inductor with the utility model, directly by current amplifier
Current output terminal carries out current load to secondary loop of mutual inductor, greatly facilitates the development of work, improves work
Make efficiency；At the same time, battery module can be charged with charging module, it is ensured that current output device Reusability；
The utility model can by CPU module adjust current amplifier electric current export, current amplifier to D A modular converters provide
After analog signal is amplified and does filtering process, there is provided stable high-precision electric current output.
As it is of the present utility model it is a kind of improve, the current output signal end of the current amplifier and CPU module it is defeated
Enter end electrical connection, CPU module is provided with display screen.The electric current output size of current amplifier is shown by display screen,
Electric current output size is visually observed that with convenient use personnel, while the signal of input through keyboard can also be shown in display screen
On.
Compared with prior art, the utility model has advantages below：
The utility model portable hand-held formula current output device has the characteristics that small volume and in light weight, is easy to carry, and
And it is easy to operate without external power supply, it is relatively simple when the special occasions such as outside transformer substation use, be advantageous to without external electricity
The scene in source is carried out the work, and solves the problems, such as to need external AC power supply when conventional relay-protection tester uses out of doors；And
And the current adjustment section of output, there is provided stable high-precision electric current output.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model portable hand-held formula current output device.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is it is understood that described herein
Specific embodiment be used only for explaining the utility model, rather than to restriction of the present utility model.It also should be noted that
For the ease of description, the part related to the utility model rather than full content are illustrate only in accompanying drawing.
Embodiment
Fig. 1 is refer to, a kind of portable hand-held formula current output device, it includes charging module 10, battery 20, DC/DC
Power module 30, current amplifier 40 and CPU module 50.
Charging module 10 is used to charge to battery 20, and battery 20 is that DC/DC power modules 30 provide supply voltage.
It is multiple-output electric power voltage that DC/DC power modules 30, which are used for the voltage conversion of battery 20, and multiple-channel output is electric
Source voltage includes the road output supply voltage 32 of first via output supply voltage 31 and second, and first via output supply voltage 31 is used for
Supply voltage is provided for current amplifier 40, the second road output supply voltage 32 is used to provide supply voltage for CPU module 50.
The signal output part 51 of CPU module 50 through a D A modular converters 80 and current amplifier 40 signal input part 41
Connection, CPU module 50 are provided with the keyboard 60 for input signal.
In the present embodiment, the current output signal end 42 of the current amplifier 40 and the input 52 of CPU module 50
Electrical connection, CPU module 50 are provided with display screen 70.The electric current output size of current amplifier is shown by display screen,
Electric current output size is visually observed that with convenient use personnel, while the signal of input through keyboard can also be shown in display screen
On.
In the utility model, using battery as power supply, then changed by DC/DC electric power source pair of module batteries
For multiple-output electric power voltage, road output supply voltage is respectively that current amplifier and CPU module provide power supply and supported, and electric current
The signal that amplifier provides according to CPU module carries out electric current output, and whole process is without external power supply, very convenient carrying.
Without external power supply during using the utility model to secondary loop of mutual inductor progress current load, directly by electricity
The current output terminal of stream amplifier carries out current load to secondary loop of mutual inductor, greatly facilitates opening for work
Exhibition, improves operating efficiency.
At the same time, battery module can be charged with charging module, it is ensured that current output device Reusability.
The utility model can by CPU module adjust current amplifier electric current export, current amplifier to D A moduluss of conversion
After the analog signal that block provides is amplified and does filtering process, there is provided stable high-precision electric current output.
Above-listed detailed description is illustrating for the utility model possible embodiments, and the embodiment simultaneously is not used to limit
The scope of the claims of the present utility model, all equivalence enforcements or change without departing from carried out by the utility model, it is intended to be limited solely by this case
In the scope of the claims.
Claims (2)
- A kind of 1. portable hand-held formula current output device, it is characterised in that：Including charging module, battery, DC/DC power supply moulds Block, current amplifier and CPU module, charging module are used to charge a battery, and battery provides electricity for DC/DC power modules Source voltage, it is multiple-output electric power voltage that DC/DC power modules, which are used for the voltage conversion of battery, multiple-output electric power voltage Including first via output supply voltage and the second road output supply voltage, it is current amplifier that first via output supply voltage, which is used for, Supply voltage is provided, the second road output supply voltage is used to provide supply voltage for CPU module；The signal output part of CPU module Through a D the signal input part of A modular converters and current amplifier connect, CPU module is provided with the keyboard for input signal.
- 2. portable hand-held formula current output device according to claim 1, it is characterised in that：The electricity of the current amplifier Stream output signal end electrically connects with the input of CPU module, and CPU module is provided with display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720252575.1U CN206640339U (en) | 2017-03-15 | 2017-03-15 | A kind of portable hand-held formula current output device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720252575.1U CN206640339U (en) | 2017-03-15 | 2017-03-15 | A kind of portable hand-held formula current output device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206640339U true CN206640339U (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720252575.1U Active CN206640339U (en) | 2017-03-15 | 2017-03-15 | A kind of portable hand-held formula current output device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333397A (en) * | 2018-01-12 | 2018-07-27 | 山东送变电工程有限公司 | A kind of hand-held fixed current voltage output device |
| CN110356234A (en) * | 2018-03-26 | 2019-10-22 | 沃尔沃汽车公司 | Vehicle powering system with redundancy and the method for controlling power supply system |
| CN111999600A (en) * | 2020-08-25 | 2020-11-27 | 武汉中元华电电力设备有限公司 | Intelligent distribution network terminal secondary current loop fault diagnosis positioning method and system |
-
2017
- 2017-03-15 CN CN201720252575.1U patent/CN206640339U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333397A (en) * | 2018-01-12 | 2018-07-27 | 山东送变电工程有限公司 | A kind of hand-held fixed current voltage output device |
| CN110356234A (en) * | 2018-03-26 | 2019-10-22 | 沃尔沃汽车公司 | Vehicle powering system with redundancy and the method for controlling power supply system |
| CN111999600A (en) * | 2020-08-25 | 2020-11-27 | 武汉中元华电电力设备有限公司 | Intelligent distribution network terminal secondary current loop fault diagnosis positioning method and system |
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