CN212410698U - Universal resistance test board based on four-wire method - Google Patents
Universal resistance test board based on four-wire method Download PDFInfo
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- CN212410698U CN212410698U CN202021876592.0U CN202021876592U CN212410698U CN 212410698 U CN212410698 U CN 212410698U CN 202021876592 U CN202021876592 U CN 202021876592U CN 212410698 U CN212410698 U CN 212410698U
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Abstract
The utility model relates to a resistance test technical field discloses a general resistance test panel based on four-wire method, include: the resistance testing board body is provided with a first pad area, a second pad area and a third pad area in sequence, an insulating area used for separating the first pad area from the second pad area is further arranged on the resistance testing board body, the first pad area is used for being connected with an external power supply and leading in current I, the second pad area is used for being connected with a resistor R to be tested, the second pad area is connected with the third pad area, and the third pad area is used for being connected with a voltmeter so as to obtain a voltage value U at two ends of the resistor R to be tested. The resistance to be measured is welded on the second welding disc area, then according to the four-wire method principle, the first welding disc area is connected with the power supply and is electrified with the current I, the third welding disc area is connected with the voltmeter and tests the voltage value U at the two ends of the resistance to be measured, the resistance value R of the resistance to be measured can be calculated and is U/I, and then the resistance value of the resistance is accurately measured.
Description
Technical Field
The utility model relates to a resistance test technical field especially relates to a general resistance test panel based on four-wire method.
Background
When the electric charge moves in the conductor, the electric charge is collided and rubbed by other particles such as molecules and atoms, and the collision and the rubbing result to form the obstruction of the current by the conductor, and the most obvious characteristic of the obstruction is that the conductor consumes electric energy to generate heat (or emit light). This resistance of the object to the current is referred to as the resistance of the object. The magnitude of the resistance of the resistive element is generally related to the temperature, the material, the length, and also the cross-sectional area thereof.
In the prior art, the existing resistance test generally uses a probe or a test clamp for contact test, which cannot well simulate the use condition of a terminal, and meanwhile, certain characteristic parameters of the resistance are not convenient to obtain by contact test.
Therefore, how to accurately measure the resistance of the resistor becomes an urgent technical problem to be solved.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in.
Therefore, according to the first aspect, the embodiment of the utility model discloses a test panel is surveyed to general resistance based on four-wire method includes: the resistance testing board body is sequentially provided with a first pad area, a second pad area and a third pad area, the resistance testing board body is further provided with an insulating area for separating the first pad area from the second pad area, the first pad area is used for being connected with an external power supply and being fed with current I, the second pad area is used for being connected with a resistor R to be tested, the second pad area is connected with the third pad area, and the third pad area is used for being connected with a voltmeter so as to obtain a voltage value U at two ends of the resistor R to be tested.
The utility model discloses further set up to, the insulating region is insulating through covering lacquer.
The utility model discloses further set up as, the substrate that the resistance surveyed the board body can be glass fiber board or aluminium base board.
The utility model discloses further set up to, the cross-section that the resistance surveyed the board body is the rectangle setting.
The utility model discloses further set up to, the second pad district with the third pad district links to each other through the sample lead-out wire.
The utility model discloses following beneficial effect has: the resistance to be measured is welded on the second welding disc area, then according to the four-wire method principle, the first welding disc area is connected with the power supply and is electrified with the current I, the third welding disc area is connected with the voltmeter and tests the voltage value U at the two ends of the resistance to be measured, the resistance value R of the resistance to be measured can be calculated and is U/I, and then the resistance value of the resistance is accurately measured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a four-wire method-based universal resistance test board disclosed in this embodiment;
FIG. 2 is a schematic structural diagram of a second four-wire based universal resistance test board disclosed in this embodiment;
fig. 3 is a schematic structural diagram of a third universal resistance test board based on the four-wire method disclosed in this embodiment.
Reference numerals: 1. a resistance test board body; 2. a first pad region; 3. a second pad region; 4. a third pad region; 5. an insulating region; 6. sampling and leading out wires.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The embodiment of the utility model discloses universal resistance test panel based on four-wire method, as shown in figure 1, include: the resistance testing board comprises a resistance testing board body 1, wherein a first pad area 2, a second pad area 3 and a third pad area 4 are sequentially arranged on the resistance testing board body 1, an insulating area 5 used for separating the first pad area 2 from the second pad area 3 is further arranged on the resistance testing board body 1, the first pad area 2 is used for being connected with an external power supply and leading in current I, the second pad area 3 is used for being connected with a resistor R to be tested, the second pad area 3 is connected with the third pad area 4, and the third pad area 4 is used for being connected with a voltmeter so as to obtain a voltage value U at two ends of the resistor R to be tested.
It should be noted that, the resistance to be measured is welded to the second pad area 3, then according to the four-wire method principle, the first pad area 2 is connected to the power supply and is connected to the current I, the third pad area 4 is connected to the voltmeter and tests the voltage value U at the two ends of the resistance to be measured, the resistance value R of the resistance to be measured can be calculated as U/I, and the resistance value of the resistance can be accurately measured.
As shown in fig. 1, the insulation zone 5 is insulated by means of a lacquer.
As shown in fig. 1, the substrate of the test board body may be a glass fiber board or an aluminum substrate.
As shown in FIG. 1, the test board body has a rectangular cross section.
As shown in fig. 1, the second pad region 3 and the third pad region 4 are connected through a sampling lead-out line 6.
FIG. 2 is a schematic structural diagram of a second four-wire based universal resistance test board disclosed in this embodiment; fig. 3 is a schematic structural diagram of a third universal resistance test board based on the four-wire method disclosed in this embodiment. As shown in fig. 2, the resistance test board is used for testing the resistance of the four-pin type patch. As shown in fig. 3, the resistance test board is used for testing the resistance of the socket chip.
The working principle is as follows: the resistance to be measured is welded on the second welding disc area 3, then according to the four-wire method principle, the first welding disc area 2 is connected with a power supply and is electrified with current I, the third welding disc area 4 is connected with a voltmeter and tests the voltage value U at two ends of the resistance to be measured, the resistance value R of the resistance to be measured can be calculated and is U/I, and then the resistance value of the resistance is accurately measured.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (5)
1. A universal resistance test board based on a four-wire method is characterized by comprising: the resistance testing board comprises a resistance testing board body (1), wherein a first pad area (2), a second pad area (3) and a third pad area (4) are sequentially arranged on the resistance testing board body (1), an insulating area (5) used for separating the first pad area (2) from the second pad area (3) is further arranged on the resistance testing board body (1), the first pad area (2) is used for being connected with an external power supply and leading in current I, the second pad area (3) is used for being connected with a resistor R to be tested, the second pad area (3) is connected with the third pad area (4), and the third pad area (4) is used for being connected with a voltmeter to obtain a voltage value U at two ends of the resistor R to be tested.
2. The universal resistance test board according to the four-wire method according to claim 1, wherein said insulating zone (5) is insulated by means of a lacquer.
3. The universal resistance test board according to claim 1, wherein the base material of the resistance test board body (1) is a glass fiber board or an aluminum substrate.
4. The universal resistance test board according to claim 1, wherein the resistance test board body (1) has a rectangular cross-section.
5. The universal resistance test board according to the four-wire method as claimed in claim 1, wherein the second pad region (3) and the third pad region (4) are connected by a sampling lead-out line (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021876592.0U CN212410698U (en) | 2020-09-01 | 2020-09-01 | Universal resistance test board based on four-wire method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021876592.0U CN212410698U (en) | 2020-09-01 | 2020-09-01 | Universal resistance test board based on four-wire method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212410698U true CN212410698U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021876592.0U Active CN212410698U (en) | 2020-09-01 | 2020-09-01 | Universal resistance test board based on four-wire method |
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| Country | Link |
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| CN (1) | CN212410698U (en) |
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2020
- 2020-09-01 CN CN202021876592.0U patent/CN212410698U/en active Active
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