CN206584027U - A kind of power supply potential skew and ground potential offset test device - Google Patents
A kind of power supply potential skew and ground potential offset test device Download PDFInfo
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- CN206584027U CN206584027U CN201720178210.9U CN201720178210U CN206584027U CN 206584027 U CN206584027 U CN 206584027U CN 201720178210 U CN201720178210 U CN 201720178210U CN 206584027 U CN206584027 U CN 206584027U
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- voltage
- power supply
- skew
- test device
- stabilizing transformer
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Abstract
The utility model is related to the technical field of test device, and test device is offset more particularly, to a kind of skew of power supply potential and ground potential.A kind of power supply potential skew and ground potential offset test device, wherein, the regulated power supply being connected including DC voltage-stabilizing transformer, with DC voltage-stabilizing transformer, DC voltage-stabilizing transformer connects sample, test device also includes adjustable resistance, adjustable resistance connection DC voltage-stabilizing transformer and sample.The utility model experiment is in standard ISO 16,750 2, one in 12 experiments, experimental principle itself is fairly simple, it is necessary to configure two regulated power supplies if being made of conventional method, the lab resources of occupancy are not directly proportional to the income that it is produced.And tested by the frock, operation is not only simplify, while a power supply can be vacated.Improve the whole efficiency of laboratory work.Using slide rheostat and DC voltage-stabilizing transformer, it is possible to realize the experiment of power supply potential and ground potential skew.
Description
Technical field
The utility model is related to the technical field of test device, more particularly, to a kind of skew of power supply potential and ground electricity
Position skew test device.
Background technology
With the modernization of current automobile, increasing electronic product is used on automobile, is greatly facilitated
Automobile driving safe and operational comfort.But the electronic product equally increased also increasingly influences whole automobile electronic system
Stability.Wherein there is a class Complex Structural System, have a plurality of power line or a plurality of ground wire.And in real process, due to production
The rosin joint of product pin or other unfavorable conditions, cause a plurality of power line（Or ground wire）Between produce pressure difference, so as to influence product
Normal work.For such case, International Organization for standardization（ISO）ISO 16750-2 standards are formulated, wherein just including
Power supply potential offsets the test with the skew of ground potential, and offset voltage is ± 1V.Occur to take precautions against product supply voltage on automobile
During this skew, the abnormal situation of product work.
In existing technology, the different electrical power line by two power supplys respectively to product is powered, when test power supply potential
When skew, the negative pole of two power supplys is shorted together, the voltage difference of two power supplys is set to 1V.When test ground potential
, it is necessary to which the positive source of two power supplys is shorted together when skew, the ground wires of two power supplys is separated, by two power supplys
Voltage difference is set to 1V.
The defect of prior art is to do an experiment to need two power supplys, and because circuit is relatively more, human operational error increases
Plus.Product, which breaks down, is easily caused electric source for test purposes damage.Complex operation, testing efficiency is low.
The content of the invention
The utility model be overcome at least one defect described in above-mentioned prior art there is provided a kind of skew of power supply potential and
Ground potential offsets test device, in the case where a power supply only is used only, and completes what power supply potential skew was offset with ground potential
Experiment, while the speed of experiment can also be accelerated and error rate is reduced.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of power supply potential skew and ground electricity
Position skew test device, wherein, including DC voltage-stabilizing transformer, the regulated power supply that is connected with DC voltage-stabilizing transformer, direct current are steady
Pressure transformer connect sample, test device also include adjustable resistance, adjustable resistance connection DC voltage-stabilizing transformer and by
Test sample product.Described sample includes the first module and the second module.
In the utility model, the experiment be standard ISO 16750-2 in, 12 experiment in one, experimental principle itself
It is fairly simple, it is necessary to configure two regulated power supplies, the receipts that the lab resources of occupancy are produced with it if being made of conventional method
Benefit is not directly proportional.And tested by the frock, operation is not only simplify, while a power supply can be vacated.Make laboratory
The whole efficiency of work is improved.
Specifically, during power supply potential skew, the positive pole of the first module connects the positive pole of DC voltage-stabilizing transformer, the first module
Negative pole connect DC voltage-stabilizing transformer negative pole；
The positive pole of second module connects one end of adjustable resistance, and the negative pole of the second module connects the negative of DC voltage-stabilizing transformer
Pole, the other end of adjustable resistance connects the positive pole of DC voltage-stabilizing transformer.The design is required according to standard, is become by adjusting to slide
The resistance of device is hindered, changes the output voltage of regulated power supply.Change the positive pole and DC voltage-stabilizing transformer anodic potentials of the second module
Difference, so as to reach the purpose of power supply potential skew.
In addition, during ground potential skew, the positive pole of the first module connects the positive pole of DC voltage-stabilizing transformer, the first module it is negative
Pole connects the negative pole of DC voltage-stabilizing transformer；
The positive pole of second module connects the positive pole of DC voltage-stabilizing transformer, the one of the negative pole connection adjustable resistance of the second module
End, the other end of adjustable resistance connects the negative pole of DC voltage-stabilizing transformer.Using same method, change DC voltage-stabilizing transformer
Potential difference between negative pole and the second module negative, so as to reach the purpose of ground potential skew.
In the utility model, DC voltage-stabilizing transformer input voltage is direct current 9V to 32V.It is output as stablizing 12V, so may be used
To ensure voltage that test process is always powered to sample（Un-offset voltage）It can stablize.
High power adjustable hinders：The adjustable range of the adjustable resistance is 0ohm to 5ohm, and peak power output is 100W, with
Just regulation voltage can correctly adjust 1V.
Further, in addition to test panel, test panel is provided with input voltage connection jaws, 12V voltage links mouthful, partially
Move voltage-regulation knob, voltmeter, skew switching switch, power supply potential skew interface, ground potential skew interface.The design is to whole
The shell of individual frock does not have particular/special requirement, is that can be achieved using common plasticses shell or bakelite plate.Focus on frock interface
Wiring topology.Input voltage connection jaws connect external regulated power supply, the input of the overall power supply of control.12V voltage links mouthful are used to give
The normal power supply input of sample.Variation in offset voltage adjusting knob Control experiment, display is inclined in real time for voltmeter
The numerical value of shifting.Skew switching switch can use fool proof with the experiment of Switching power potential shift and ground potential deflection test, the switch
Design, when power supply potential skew is done, ground potential skew interface can fail, and cause experiment to do wrong to avoid wrong line.
Compared with prior art, beneficial effect is：The utility model experiment is in standard ISO 16750-2,12 is tested
In one, experimental principle itself is fairly simple, it is necessary to configure two regulated power supplies if being made of conventional method, occupancy
Lab resources are not directly proportional to the income that it is produced.And tested by the frock, operation is not only simplify, while can be with
Vacate a power supply.Improve the whole efficiency of laboratory work.Using slide rheostat and DC voltage-stabilizing transformer, it is possible to
Realize the experiment of power supply potential and ground potential skew.
Brief description of the drawings
Fig. 1 is the utility model power supply potential skew schematic diagram.
Fig. 2 is the utility model ground potential skew schematic diagram.
Fig. 3 is the utility model test panel schematic diagram.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；It is attached in order to more preferably illustrate the present embodiment
Scheme some parts to have omission, zoom in or out, do not represent the size of actual product；To those skilled in the art,
Some known features and its explanation may be omitted and will be understood by accompanying drawing.Being given for example only property of position relationship described in accompanying drawing
Explanation, it is impossible to be interpreted as the limitation to this patent.
As shown in Figure 1, 2, a kind of power supply potential skew and ground potential offset test device, wherein, including DC voltage-stabilizing change
Depressor 100, the regulated power supply 200 being connected with DC voltage-stabilizing transformer 100, the connection sample of DC voltage-stabilizing transformer 100
400, test device also includes adjustable resistance 300, the connection DC voltage-stabilizing of adjustable resistance 300 transformer 100 and sample
400.Sample 400 includes the first module 500 and the second module 600.
As in Fig. 1, when power supply potential is offset, the positive pole of the first module 500 connects the positive pole of DC voltage-stabilizing transformer 100,
The negative pole of the negative pole connection DC voltage-stabilizing transformer 100 of first module 500；
The positive pole of second module 600 connects one end of adjustable resistance 300, the negative pole connection DC voltage-stabilizing of the second module 600
The negative pole of transformer 100, the positive pole of the other end connection DC voltage-stabilizing transformer 100 of adjustable resistance 300.The design is according to standard
It is required that, by adjusting the resistance of slide rheostat, change the output voltage of regulated power supply.Change the positive pole of the second module 600 with
The anodic potentials of DC voltage-stabilizing transformer 100 are poor, so as to reach the purpose of power supply potential skew.
As in Fig. 2, when ground potential is offset, the positive pole of the first module 500 connects the positive pole of DC voltage-stabilizing transformer 100, the
The negative pole of the negative pole connection DC voltage-stabilizing transformer 100 of one module 500；
The positive pole of the positive pole connection DC voltage-stabilizing transformer 100 of second module 600, the negative pole connection of the second module 600 can
Adjust one end of resistance 300, the negative pole of the other end connection DC voltage-stabilizing transformer 100 of adjustable resistance 300.Using same side
Method, changes the potential difference between DC voltage-stabilizing transformer negative pole and the second module negative, so as to reach the purpose of ground potential skew.
In the present embodiment, DC voltage-stabilizing transformer input voltage is direct current 9V to 32V.It is output as stablizing 12V, so can be with
Ensure the voltage that test process is always powered to sample（Un-offset voltage）It can stablize.
High power adjustable hinders：The adjustable range of the adjustable resistance is 0ohm to 5ohm, and peak power output is 100W, with
Just regulation voltage can correctly adjust 1V.
As in Fig. 3, in addition to test panel, test panel provided with input voltage connection jaws 1,12V voltage links mouthful 2,
Offset voltage adjusting knob 3, voltmeter 4, skew switching switch 5, power supply potential skew interface 6, ground potential skew interface 7.This
Design does not have particular/special requirement to the shell of whole frock, is that can be achieved using common plasticses shell or bakelite plate.Focus on
Frock interface wiring topology.Input voltage connection jaws connect external regulated power supply, the input of the overall power supply of control.12V voltage links
Mouth is used to input to the normal power supply of sample.Variation in offset voltage adjusting knob Control experiment, voltmeter is real
When display offset numerical value.Skew switching switch can be with the experiment of Switching power potential shift and ground potential deflection test, the switch
Using fool-proof design, when power supply potential skew is done, ground potential skew interface can fail, and cause examination to avoid wrong line
Test and do wrong.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.All any modifications, equivalent substitutions and improvements made within spirit of the present utility model and principle etc., should be included in
Within the utility model scope of the claims.
Claims (7)
1. a kind of power supply potential skew and ground potential offset test device, it is characterised in that including DC voltage-stabilizing transformer
（100）And DC voltage-stabilizing transformer（100）The regulated power supply of connection（200）, DC voltage-stabilizing transformer（100）Connect detected sample
Product（400）, test device is also including adjustable resistance（300）, adjustable resistance（300）Connect DC voltage-stabilizing transformer（100）And
Sample（400）.
2. a kind of power supply potential skew according to claim 1 and ground potential offset test device, it is characterised in that：It is described
Sample（400）Including the first module（500）With the second module（600）.
3. a kind of power supply potential skew according to claim 2 and ground potential offset test device, it is characterised in that：Power supply
During potential shift, the first module（500）Positive pole connection DC voltage-stabilizing transformer（100）Positive pole, the first module（500）It is negative
Pole connects DC voltage-stabilizing transformer（100）Negative pole；
Second module（600）Positive pole connection adjustable resistance（300）One end, the second module（600）Negative pole connection direct current it is steady
Pressure transformer（100）Negative pole, adjustable resistance（300）The other end connection DC voltage-stabilizing transformer（100）Positive pole.
4. a kind of power supply potential skew according to claim 2 and ground potential offset test device, it is characterised in that：Ground electricity
During the skew of position, the first module（500）Positive pole connection DC voltage-stabilizing transformer（100）Positive pole, the first module（500）Negative pole
Connect DC voltage-stabilizing transformer（100）Negative pole；
Second module（600）Positive pole connection DC voltage-stabilizing transformer（100）Positive pole, the second module（600）Negative pole connection
Adjustable resistance（300）One end, adjustable resistance（300）The other end connection DC voltage-stabilizing transformer（100）Negative pole.
5. offseting test device according to a kind of any described power supply potential skew of Claims 1-4 and ground potential, its feature exists
In：Described DC voltage-stabilizing transformer（100）Input voltage is direct current 9V to 32V, is output as stablizing 12V.
6. offseting test device according to a kind of any described power supply potential skew of Claims 1-4 and ground potential, its feature exists
In：Described adjustable resistance（300）Adjustable range is 0ohm to 5ohm, and peak power output is 100W.
7. offseting test device according to a kind of any described power supply potential skew of Claims 1-4 and ground potential, its feature exists
In：Also include test panel, test panel is provided with input voltage connection jaws（1）, 12V voltage links mouthful（2）, offset voltage adjust
Save knob（3）, voltmeter（4）, skew switching switch（5）, power supply potential skew interface（6）, ground potential skew interface（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720178210.9U CN206584027U (en) | 2017-02-27 | 2017-02-27 | A kind of power supply potential skew and ground potential offset test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720178210.9U CN206584027U (en) | 2017-02-27 | 2017-02-27 | A kind of power supply potential skew and ground potential offset test device |
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| CN206584027U true CN206584027U (en) | 2017-10-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022056920A1 (en) * | 2020-09-21 | 2022-03-24 | 深圳欣锐科技股份有限公司 | Charging signal detection circuit and charging signal detection method |
-
2017
- 2017-02-27 CN CN201720178210.9U patent/CN206584027U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022056920A1 (en) * | 2020-09-21 | 2022-03-24 | 深圳欣锐科技股份有限公司 | Charging signal detection circuit and charging signal detection method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 511400 150, No. 8, Qishan Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: Radio and TV Measurement and Testing Group Co.,Ltd. Address before: 510656 Guangdong city of Guangzhou province Whampoa Avenue Tianhe District Xiping Yun Road No. 163 Patentee before: GUANGZHOU GRG METROLOGY & TEST Co.,Ltd. |
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| CP03 | Change of name, title or address |