CN201662596U - Current-voltage electrode - Google Patents
Current-voltage electrode Download PDFInfo
- Publication number
- CN201662596U CN201662596U CN2009203520816U CN200920352081U CN201662596U CN 201662596 U CN201662596 U CN 201662596U CN 2009203520816 U CN2009203520816 U CN 2009203520816U CN 200920352081 U CN200920352081 U CN 200920352081U CN 201662596 U CN201662596 U CN 201662596U
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- China
- Prior art keywords
- electrode
- voltage
- current
- voltage electrode
- test specimen
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- 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 - Lifetime
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Abstract
The utility model relates to a current-voltage electrode which comprises a current electrode and a voltage electrode, wherein the voltage electrode adopts a metal probe, a voltage signal line terminal is led out from one end of the metal probe, insulating medium is arranged in the current electrode, the voltage electrode is wrapped with the insulating medium, a current line leading-out terminal is arranged on the current electrode, and the voltage electrode adopts an elastic telescopic structure capable of ensuring a fine structure at a test point when a voltage signal is sampled at the test point of a tested product. In the utility model, the insulating medium layer is arranged between the voltage electrode and the current electrode, the voltage electrode and the current electrode are separated from each other during the testing process, the sampling point of the voltage signal is accurate, and the current electrode samples current signal. Therefore, large contact surface is avoided, the contact surface is even, the shape of the contact surface between the current electrode and the tested product can be changed according to the shape and size of the tested products with large volumes and irregular shapes, the contact is good, the measuring accuracy is high, and the use is convenient.
Description
Technical field
The utility model relates to a kind of sampling electrode, is a kind of current/voltage electrode of compressing test specimen and drawing p-wire of being used to specifically, and the test specimen current and voltage signals is used to take a sample.
Background technology
In the electrical test field, particularly in the test of four-terminal method measuring resistance, in order to eliminate the influence of test lead resistance and sampling equipment and test specimen contact resistance to the current/voltage test result, often adopt galvanization in test specimen in the industry, adopt the voltage sample electrode to obtain voltage difference then at the test specimen two ends.
When sampling test specimen voltage signal and current signal, the method of general normal employing crocodile clip lead-in wire is drawn wiring from the test specimen two ends and is obtained current and voltage signals, but crocodile clip is not a contact with being connected of test specimen, its voltage sampling error directly has influence on the error of test value, can't accurately obtain the voltage signal of certain point on the test specimen, measuring accuracy is brought very big influence; And for the bigger or erose test specimen of volume, common crocodile clip even can't be connected to test specimen, current sampling signal has difficulties.
Therefore, there is the defective that the voltage sampling surface of contact is big, test error is big in prior art, and problem big for volume and that the out-of-shape test specimen can't be got voltage and current signal.
The utility model content
The purpose of this utility model is the problem that solves that the voltage sampling surface of contact is big, test error big, can't get voltage and current signal for bigger, the in irregular shape test specimen of volume, and provide a kind of current/voltage electrode, can obtain voltage signal in the test specimen test point, reduce test error, and can test volume big, the voltage of test specimen in irregular shape, current signal.
The purpose of this utility model is achieved in that
A kind of current/voltage electrode comprises galvanic electrode, voltage electrode, and described voltage electrode is metal probe not, one end extraction voltage signal terminal; In the described galvanic electrode insulating medium is arranged, insulating medium parcel voltage electrode, galvanic electrode is provided with electric current line leading-out terminal.
Voltage electrode is the elastic telescopic structure, and being used for can the fine structure test point when signal is pressed in the power taking of test specimen test point.
The utility model current/voltage electrode, voltage electrode is embedded into galvanic electrode, between voltage electrode and the galvanic electrode insulating medium layer is arranged.Voltage electrode sampling voltage signal, voltage electrode are metal probe, and by insulating medium layer itself and current sample electrode are separated, and the voltage signal sampling spot is accurate; Galvanic electrode sampling current signal, contact area is big and can contact even.For large volume and out-of-shape test specimen, can change galvanic electrode and test specimen surface of contact shape according to its shape and size, make its contact good.
The utility model is simple in structure, is easy to make, and voltage electrode contacts with test specimen point, and test result is accurate; Current sample electrode and test specimen surface of contact are even, and be voltage electrode and galvanic electrode is together integrated, practical and convenient when being used for four terminal measuring resistances, and sampling has accurately increased testing precision.
Description of drawings
Fig. 1 be the utility model according to figure embodiment cross-sectional view,
Fig. 2 is a specific embodiment of the invention user mode stereographic map,
Among the figure: 1-galvanic electrode, 2-voltage electrode, 3-dead ring, 4-electrically conductive elastic spare, 5-screw, 6-pressure-wire, 7-electric current line.
Embodiment
As Fig. 1 is specific embodiment of the present invention, a kind of current/voltage electrode comprises galvanic electrode 1, voltage electrode 2, voltage electrode 2 is a metal probe, one end extraction voltage signal terminal, extraction voltage line 6 on the terminal has exhausted medium in the galvanic electrode 2, insulating medium is made dead ring 3 in the present embodiment, dead ring 3 parcel voltage electrodes 2, galvanic electrode 1 is provided with electric current line leading-out terminal, terminal projected current line 7.
User mode figure as shown in Figure 2, the utility model current/voltage electrode is placed on the test specimen, voltage electrode 2 contacts with test specimen power taking pressure point, galvanic electrode 1 contacts with test specimen power taking stream interface, by on galvanic electrode, applying external force, make electrically conductive elastic spare 4 produce deformation, compress voltage electrode 2, make that voltage electrode 2 contacts well with test specimen sampling voltage place, galvanic electrode 3 contacts closely with test specimen sampling current face.
The utility model provides aforesaid current/voltage electrode, in this electrode, voltage electrode is wrapped up by insulation course, be embedded in the galvanic electrode, voltage electrode contacts with test specimen point, and test result is accurate, and current sample electrode and test specimen surface of contact are even, with insulation course voltage electrode and galvanic electrode are completely cut off, make the voltage signal and the current signal degree of accuracy height of sampling.And voltage electrode and galvanic electrode integrate, and are beneficial to the degree of accuracy that improves little resistance meter sampled signal, and be easy to use, simple in structure, is easy to make.
Claims (2)
1. a current/voltage electrode comprises galvanic electrode, voltage electrode, it is characterized in that: described voltage electrode is a metal probe, one end extraction voltage signal wire terminal, insulating medium is arranged in the galvanic electrode, the parcel voltage electrode, galvanic electrode is provided with electric current line leading-out terminal.
2. a kind of current/voltage electrode according to claim 1 is characterized in that: voltage electrode is the elastic telescopic structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203520816U CN201662596U (en) | 2009-12-28 | 2009-12-28 | Current-voltage electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203520816U CN201662596U (en) | 2009-12-28 | 2009-12-28 | Current-voltage electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662596U true CN201662596U (en) | 2010-12-01 |
Family
ID=43233015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203520816U Expired - Lifetime CN201662596U (en) | 2009-12-28 | 2009-12-28 | Current-voltage electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201662596U (en) |
-
2009
- 2009-12-28 CN CN2009203520816U patent/CN201662596U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |
|
| CX01 | Expiry of patent term |