Resistor electric connection seat, circuit and resistance test circuit board

Abstract

The utility model relates to a resistor electric connection seat, a circuit and a resistor test circuit board. The resistor electric connection seat comprises an insulation seat body, a first conductive column, a second conductive column, a third conductive column, a fourth conductive column, a first conductive sheet and a second conductive sheet, the first conducting strip and the second conducting strip are detachably mounted on the insulating seat body and are arranged at an interval; the first conducting strip and the second conducting strip are respectively used for contacting two ends of a resistor and pressing the two ends of the resistor on the insulating seat body; the first conductive column, the second conductive column, the third conductive column and the fourth conductive column are all arranged on the insulating seat body, every two conductive columns are arranged at intervals, and the first conductive sheet is in contact with the first conductive column and the second conductive column at the same time; and the second conductive sheet is in contact with the third conductive column and the fourth conductive column at the same time.

Description

Technical Field

[0001] The utility model relates to the field of resistor installation, in particular to a resistor electrical connection seat, a circuit and a resistor test circuit board. Background Art

[0002] In the circuit experiment for resistors, the two ends of the resistor will be wrapped around two conductive posts. Taking the resistance value test scenario as an example, the alligator clips of the voltmeter and the ammeter will clamp the same conductive post at the end of the resistor, that is, at least two alligator clips are usually clamped on the same conductive post. Since the alligator clips are close to each other, they are prone to interference with each other, resulting in reduced stability of the alligator clips clamping the conductive post, introducing additional contact resistance, and reducing the accuracy of the test results. Utility Model Content

[0003] Based on this, it is necessary to provide a resistor electrical connection socket, a circuit and a resistor test circuit board to address the problem of insufficient test result accuracy in resistor circuit experiments.

[0004] The technical solution provided by the utility model is:

[0005] A resistor electrical connection seat, comprising an insulating seat body, a first conductive column, a second conductive column, a third conductive column, a fourth conductive column, a first conductive sheet and a second conductive sheet;

[0006] The first conductive sheet and the second conductive sheet are detachably mounted on the insulating base and spaced apart, and the first conductive sheet and the second conductive sheet are respectively used to contact two ends of the resistor and press the two ends of the resistor onto the insulating base;

[0007] The first conductive column, the second conductive column, the third conductive column and the fourth conductive column are all arranged on the insulating base and are spaced apart from each other. The first conductive sheet contacts the first conductive column and the second conductive column at the same time, and the second conductive sheet contacts the third conductive column and the fourth conductive column at the same time.

[0008] In the utility model, the first conductive column is provided with an external thread, and the first conductive column is threadedly connected with a first fastening nut, and the first fastening nut presses the first conductive sheet onto the insulating seat.

[0009] In the utility model, a part of the external thread on the first conductive column is exposed outside the first fastening nut.

[0010] In the utility model, a first avoidance hole is formed on the first conductive sheet, and the first conductive column is penetrated through the first avoidance hole and contacts with the inner wall of the first avoidance hole.

[0011] The insulating seat of the utility model is provided with a first limiting groove extending along a first direction, the first limiting groove is used to accommodate a resistor, one end of the first limiting groove is located between the first conductive column and the second conductive column, and the other end of the first limiting groove is located between the third conductive column and the fourth conductive column.

[0012] The insulating seat body of the utility model is also provided with a second limiting groove and a third limiting groove, the second limiting groove and the third limiting groove are respectively located at the two ends of the first limiting groove and are connected to the first limiting groove, the first conductive sheet is located in the second limiting groove, and the second conductive sheet is located in the third limiting groove.

[0013] In the present invention, the first conductive column and the second conductive column are both partially located outside the second limiting groove, and the third conductive column and the fourth conductive column are both partially located outside the third limiting groove.

[0014] In the present invention, a first fastener is provided between the first conductive column and the second conductive column, and the first fastener presses the first conductive sheet onto the insulating base body, and / or a second fastener is provided between the third conductive column and the fourth conductive column, and the second fastener presses the second conductive sheet onto the insulating base body.

[0015] A circuit includes a resistor and a resistor electrical connection seat, wherein the first conductive sheet and the second conductive sheet respectively press two ends of the resistor onto the insulating seat body, and the first conductive column, the second conductive column, the third conductive column and the fourth conductive column are each connected to at most one alligator clip.

[0016] A resistance testing circuit board comprises a substrate and a circuit arranged on the substrate.

[0017] The beneficial effects of the utility model are:

[0018] One end of the resistor is electrically connected to the first conductive column and the second conductive column simultaneously by using the first conductive sheet. When the end of the resistor needs to be clamped by more than two alligator clips, the alligator clips can be dispersed on the first conductive column and the second conductive column, so as to reduce the number of alligator clips on a single conductive column, thereby reducing the interference between the alligator clips, thereby improving the contact stability between the alligator clip and the resistor, thereby reducing the generation of contact resistance between the alligator clip and the conductive column, and thus improving the test stability of the resistor.

[0019] Similarly, the third conductive column and the fourth conductive column at the other end of the resistor have the effect of reducing the number of alligator clips on a single conductive column, thereby improving the test stability of the resistor.

[0020] The detachable design of the first conductive sheet and the second conductive sheet on the insulating seat body enables the resistor on the resistor electrical connection seat to be replaced, thereby allowing the resistor electrical connection seat to be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the resistor electrical connection seat in Example 1 of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the first conductive sheet in Embodiment 1 of the present utility model;

[0023] Figure 3 The circuit of the circuit in Embodiment 2 of the present utility model Figure 1 ;

[0024] Figure 4 The circuit of the circuit in Embodiment 2 of the present utility model Figure 2 ;

[0025] Figure 5 The circuit of the circuit in Embodiment 3 of the present utility model Figure 1 ;

[0026] Figure 6 The circuit of the circuit in Embodiment 3 of the present utility model Figure 2 ;

[0027] Figure 7 This is a schematic diagram of the main structure of the resistance test circuit board in Example 4 of the utility model;

[0028] Figure 8 The connection state of the resistance test circuit board in Example 4 of the utility model Figure 1 ;

[0029] Fig. 9 The connection state of the resistance test circuit board in Example 4 of the utility model Figure 2 .

[0030] Reference numerals:

[0031] 11. first end; 12. second end; 13. third end; 14. fourth end; 15. fifth end; 16. sixth end; 17. seventh end; 18. eighth end; 21. ninth end; 22. tenth end; 23. eleventh end; 24. twelfth end; 25. thirteenth end; 26. fourteenth end; 27. fifteenth end; 28. sixteenth end; 3. substrate; 41. insulating seat; 411. first limiting groove; 412. second limiting groove; 413. third limiting groove; 42. first conductive column; 43. second conductive column; 44. third conductive column; 45. fourth conductive column; 46. first conductive sheet; 461. first avoidance hole. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0038] Embodiment 1:

[0039] See also Figure 1 and Figure 2 This embodiment provides a resistor electrical connection seat, including an insulating seat body 41, a first conductive column 42, a second conductive column 43, a third conductive column 44, a fourth conductive column 45, a first conductive sheet 46 and a second conductive sheet (not shown in the figure).

[0040] The resistor is arranged on the insulating seat 41, and the first conductive sheet 46 and the second conductive sheet are installed on the insulating seat 41 and arranged at intervals, so that the first conductive sheet 46 and the second conductive sheet can contact the two ends of the resistor respectively, and the two ends of the resistor are pressed on the insulating seat 41 respectively, so that the first conductive sheet 46 and the second conductive sheet can respectively achieve a stable electrical connection relationship with the two ends of the resistor. The first conductive sheet 46 and the second conductive sheet are both detachably matched with the insulating seat 41. When the first conductive sheet 46 and the second conductive sheet are removed, the resistor on the insulating seat 41 can be replaced, thereby allowing the resistor electrical connection seat of this embodiment to be reused.

[0041] The first conductive pillar 42, the second conductive pillar 43, the third conductive pillar 44 and the fourth conductive pillar 45 are all disposed on the insulating base 41 and are spaced apart from each other. It is particularly necessary to ensure that there is a large spacing between the first conductive pillar 42 and the second conductive pillar 43, and between the third conductive pillar 44 and the fourth conductive pillar 45. The first conductive sheet 46 contacts the first conductive pillar 42 and the second conductive pillar 43 at the same time, and one end of the resistor can be electrically connected to the first conductive pillar 42 and the second conductive pillar 43 at the same time through the first conductive sheet 46. The second conductive sheet contacts the third conductive pillar 44 and the fourth conductive pillar 45 at the same time, and the other end of the resistor can be electrically connected to the third conductive pillar 44 and the fourth conductive pillar 45 at the same time through the second conductive sheet.

[0042] Taking the left end of the resistor as an example, the first conductive column 42 and the second conductive column 43 are both electrically connected to the left end of the resistor. When the left end of the resistor needs to be electrically connected to the voltmeter and the ammeter at the same time, the crocodile clip of the voltmeter can be clamped on the first conductive column 42, and the crocodile clip of the ammeter can be clamped on the second conductive column 43. Since there is a large gap between the first conductive column 42 and the second conductive column 43, the crocodile clip on the first conductive column 42 and the crocodile clip on the second conductive column 43 will not interfere with each other. The crocodile clips on the voltmeter and the ammeter can respectively stably clamp the first conductive column 42 and the second conductive column 43, thereby reducing the contact resistance at the first conductive column 42 and the second conductive column 43, thereby improving the test stability of the resistor.

[0043] The working principle of the third conductive pillar 44 and the fourth conductive pillar 45 is similar to that of the fourth conductive pillar 45 , and will not be further described in this embodiment.

[0044] The structures of the first conductive column 42, the second conductive column 43, the third conductive column 44 and the fourth conductive column 45 are completely the same. Taking the first conductive column 42 as an example, the first conductive column 42 is provided with an external thread, and the first conductive column 42 is threadedly connected with a first fastening nut, and the first fastening nut can press the first conductive sheet 46 on the insulating seat 41, so that the first conductive sheet 46 generates sufficient pressure on the left end of the resistor and forms a stable contact and electrical connection. Similarly, the second conductive column 43, the third conductive column 44 and the fourth conductive column 45 are respectively threadedly connected with a second fastening nut, a third fastening nut and a fourth fastening nut.

[0045] Generally, a portion of the external thread on the first conductive column 42 is exposed from the first fastening nut, and the first fastening nut will not completely cover the external thread on the first conductive column 42, thereby allowing the alligator clip to clamp the first conductive column 42 at the external thread, thereby increasing the friction between the alligator clip and the first conductive column 42, and further increasing the contact stability between the alligator clip and the first conductive column 42.

[0046] The first conductive sheet 46 is provided with two first avoidance holes 461, and the first conductive column 42 and the second conductive column 43 are respectively disposed in the two first avoidance holes 461, and the first conductive column 42 and the second conductive column 43 are respectively in contact with the inner walls of the two first avoidance holes 461. Further preferably, the first conductive column 42 and the second conductive column 43 are both in contact with the inner walls of the first avoidance holes 461, thereby generating a larger contact area with the first conductive sheet 46, so that the first conductive column 42 and the second conductive column 43 are both in stable electrical connection with the first conductive sheet 46.

[0047] Similarly, two second avoidance holes are formed on the second conductive sheet, and the third conductive column 44 and the fourth conductive column 45 are respectively disposed in the two second avoidance holes and fit with the inner walls of the second avoidance holes.

[0048] The insulating seat body 41 is adapted to the shape of the resistor, and is provided with a first limiting groove 411 extending along the first direction. One end of the first limiting groove 411 is located between the first conductive column 42 and the second conductive column 43, and the other end of the first limiting groove 411 is located between the third conductive column 44 and the fourth conductive column 45. Therefore, after the resistor is placed in the first limiting groove 411, the two ends of the resistor are respectively located between the first conductive column 42 and the second conductive column 43 and between the third conductive column 44 and the fourth conductive column 45, so that the end of the resistor is prevented from contacting the first conductive column 42, the second conductive column 43, the third conductive column 44 and the fourth conductive column 45, thereby preventing the end of the resistor from entering the first avoidance hole 461 and the second avoidance hole during the installation of the first conductive sheet 46 and the second conductive sheet. The first conductive column 42 and the second conductive column 43 can be smoothly inserted into the first avoidance hole 461 and fit with the inner wall of the first avoidance hole 461, and the third conductive column 44 and the fourth conductive column 45 can be smoothly inserted into the second avoidance hole and fit with the inner wall of the second avoidance hole.

[0049] In this embodiment, the first conductive column 42, the second conductive column 43, the third conductive column 44 and the fourth conductive column 45 cooperate with the first avoidance hole and the second avoidance hole to position the first conductive sheet 46 and the second conductive sheet. In other embodiments, in order to prevent the first conductive sheet 46 and the second conductive sheet from shaking when squeezing the end of the resistor, as in this embodiment, a second limiting groove 412 and a third limiting groove 413 can be opened on the insulating seat 41, the first conductive sheet 46 is located in the second limiting groove 412, and the second conductive sheet is located in the third limiting groove 413. The shape and size of the second limiting groove 412 and the third limiting groove 413 are respectively adapted to the first conductive sheet 46 and the second conductive sheet, so as to respectively limit the first conductive sheet 46 and the second conductive sheet, and limit the movement of the first conductive sheet 46 and the second conductive sheet on the insulating seat 41.

[0050] Correspondingly, the second limiting groove 412 and the third limiting groove 413 are respectively located at two ends of the first limiting groove 411 and communicate with the first limiting groove 411 .

[0051] In order to enable the alligator clip to smoothly clamp the first conductive column 42, the second conductive column 43, the third conductive column 44 and the fourth conductive column 45, the first conductive column 42 and the second conductive column 43 are partially located outside the second limiting groove 412, and the third conductive column 44 and the fourth conductive column 45 are partially located outside the third limiting groove 413.

[0052] In this embodiment, the first conductive sheet 46 and the second conductive sheet extend along the second direction, which is perpendicular to the first direction. The first conductive column 42 and the second conductive column 43 are respectively located at two ends of the first conductive sheet 46, and the third conductive column 44 and the fourth conductive column 45 are respectively located at two ends of the second conductive sheet. Accordingly, the first fastening nut and the second fastening nut squeeze the two ends of the first conductive sheet 46, respectively, and the third fastening nut and the fourth fastening nut squeeze the two ends of the second conductive sheet, respectively. On the other hand, the two ends of the resistor are respectively located in the middle of the first conductive sheet 46 and the middle of the second conductive sheet. In order to further effectively increase the direct pressure of the first conductive sheet 46 and the second conductive sheet on the end of the resistor, a first fastener can be arranged between the first conductive column 42 and the second conductive column 43, and a second fastener is arranged between the third conductive column 44 and the fourth conductive column 45. The first fastener and one end of the resistor are opposite to each other in a third direction, and the second fastener and the other end of the resistor are opposite to each other in the third direction, and the third direction is perpendicular to the first direction and the second direction. The first fastener directly squeezes the middle of the first conductive sheet 46, and the second fastener directly squeezes the middle of the second conductive sheet, so that the first fastener and the second fastener squeeze the two ends of the resistor respectively along a straight line.

[0053] Embodiment 2:

[0054] See also Figure 3 and Figure 4 This embodiment provides a circuit, including a power supply E, a switch S, a voltmeter V1, a voltmeter V2, a wire L, and a resistance to be measured R x , standard resistor R0 and the resistor electrical connection sockets provided in the two embodiments 1. The circuit provided in this embodiment is used to detect the resistance R to be tested. x The resistance to be measured R x The standard resistor R0 is installed on two resistor electrical connection sockets respectively.

[0055] The power source E has a first end 11 and a second end 12, and the first end 11 and the second end 12 are respectively equipotential to the positive and negative electrodes of the power source E. The voltmeter V1 has a third end 13 and a fourth end 14, the voltmeter V2 has a fifth end 15 and a sixth end 16, the wire L has a seventh end 17 and an eighth end 18, and the resistance value of the standard resistor R0 is known. The first end 11 and the eighth end 18 are respectively clamped on the two first conductive posts by crocodile clips, the third end 13 and the fifth end 15 are respectively clamped on the two second conductive posts by crocodile clips, the seventh end 17 and the second end 12 are respectively clamped on the two third conductive posts by crocodile clips, and the fourth end 14 and the sixth end 16 are respectively clamped on the two fourth conductive posts by crocodile clips. Thus, the first end 11 and the seventh end 17 are respectively connected to the two ends of the standard resistor R0, so that the standard resistor R0 is connected in series between the power source E and the wire L, and the second end 12 and the eighth end 18 are respectively connected to the resistance to be measured R x The two ends of the resistance to be measured R x Connected in series between power supply E and wire L, power supply E, switch S, and resistance to be measured R x , wire L, and standard resistor R0 form a complete series circuit.

[0056] In this embodiment, the switch S is set on the resistor R x and the power source E. In some other embodiments, the switch S can also be set between the standard resistor R0 and the power source E.

[0057] The third terminal 13 and the fourth terminal 14 are respectively connected to the two ends of the standard resistor R0, so that the voltmeter V1 detects the voltage across the two ends of the standard resistor R0. The fifth terminal 15 and the sixth terminal 16 are respectively connected to the resistor to be tested R x The two ends of the voltmeter V2 make the resistance to be measured R x The voltage at both ends is detected. The resistance value of the standard resistor R0 and the resistance to be measured R are determined by using the ratio of the readings of the voltmeter V1 and the voltmeter V2. x The ratio between the resistance values ​​is used to calculate the resistance R to be measured. x The first end 11 and the third end 13 are electrically connected to the same end of the standard resistor R0, and the first end 11 and the third end 13 are spaced apart by the first conductive column and the second conductive column, so that the alligator clips on the first end 11 and the third end 13 do not interfere with each other, thereby avoiding the introduction of additional contact resistance between the third end 13 and the standard resistor R0.

[0058] Similarly, the fourth terminal 14 and the seventh terminal 17 are electrically connected to the same end of the standard resistor R0 and are spaced apart by the third conductive column and the fourth conductive column, and the fifth terminal 15 and the eighth terminal 18 are electrically connected to the resistor to be measured R x The second end 12 and the sixth end 16 are electrically connected to the resistor R to be measured and are arranged at intervals through the first conductive column and the second conductive column. xThe same end of the voltmeter V1 and the voltmeter V2 are arranged at intervals through the third conductive column and the fourth conductive column. In this embodiment, only one crocodile clip is clamped on all the first conductive column, the second conductive column, the third conductive column and the fourth conductive column, and there is no interference between the crocodile clips. The crocodile clips can produce stable clamping, thereby preventing the indications of the voltmeter V1 and the voltmeter V2 from being affected by the contact resistance, thereby improving the resistance R to be measured. x The accuracy of resistance value detection.

[0059] Embodiment 3:

[0060] See also Figure 5 and Figure 6 This embodiment provides a circuit, including a power supply E, a switch S, and a resistance to be measured R x , standard resistor R0, standard resistor R1, standard resistor R2, standard resistor R3, standard resistor R4, wire L, voltmeter V3 and the resistor electrical connection sockets provided in the two embodiments 1. The purpose of the circuit provided in this embodiment is to detect the resistance R to be tested. x The resistance to be measured R x The standard resistor R1 and the standard resistor R3 are connected in series, and the standard resistor R2 and the standard resistor R4 are connected in series.

[0061] The power source E has a first terminal 11 and a second terminal 12, and the first terminal 11 and the second terminal 12 are respectively equipotential to the positive and negative electrodes of the power source E. The wire L has a seventh terminal 17 and an eighth terminal 18, the standard resistor R1 has a fifteenth terminal 27 and a sixteenth terminal 28, the standard resistor R2 has a thirteenth terminal 25 and a fourteenth terminal 26, the standard resistor R3 has a ninth terminal 21 and a tenth terminal 22, the standard resistor R4 has an eleventh terminal 23 and a twelfth terminal 24, the standard resistor R0, the standard resistor R1, the standard resistor R2, the standard resistor R3 and the standard resistor R4 are all resistors of known resistance, and the ratio of the resistance value of the standard resistor R3 to the resistance value of the standard resistor R1 is equal to the ratio of the resistance value of the standard resistor R4 to the resistance value of the standard resistor R2.

[0062] The alligator clips at the ninth end 21, the first end 11, the eleventh end 23 and the seventh end 17 are clamped on the first conductive column, the second conductive column, the third conductive column and the fourth conductive column of one of the resistor electrical connection bases in sequence, and the thirteenth end 25, the eighth end 18, the fifteenth end 27 and the second end 12 are clamped on the first conductive column, the second conductive column, the third conductive column and the fourth conductive column of another resistor electrical connection base in sequence, so that one end of the standard resistor R0 is electrically connected to the first end 11 and the ninth end 21 at the same time, and the other end of the standard resistor R0 is electrically connected to the seventh end 17 and the eleventh end 23 at the same time, and the resistance to be measured R x One end of the resistor R is electrically connected to the thirteenth terminal 25 and the eighth terminal 18 at the same time. xThe other end of is electrically connected to the fifteenth end 27 and the second end 12, the tenth end 22 and the sixteenth end 28 are electrically connected to the same end of the voltmeter V3, and the twelfth end 24 and the fourteenth end 26 are connected to the other end of the voltmeter V3, thereby forming a complete bridge circuit. When the voltmeter V3 shows zero, the resistance detection circuit of this embodiment is analyzed using Kirchhoff's law. It can be seen that the resistance to be measured R x The resistance value is equal to the resistance value of standard resistor R0 × the resistance value of standard resistor R1 / the resistance value of standard resistor R3.

[0063] In this embodiment, only one alligator clip is clamped on all the first conductive pillars, the second conductive pillars, the third conductive pillars and the fourth conductive pillars. The alligator clips on the ninth end 21, the first end 11, the eleventh end 23, the seventh end 17, the thirteenth end 25, the eighth end 18, the fifteenth end 27 and the second end 12 are staggered by the first conductive pillars, the second conductive pillars, the third conductive pillars and the fourth conductive pillars. The alligator clips will not interfere with each other, thereby forming a stable clamping and electrical connection relationship, avoiding the introduction of unnecessary contact resistance, so that the resistance to be measured R x The resistance value obtained is more accurate.

[0064] Embodiment 4:

[0065] See also Figure 7 This embodiment provides a resistance test circuit board, including a substrate 3 and a circuit arranged on the substrate 3. The circuit includes a power source E, a standard resistor R0, a standard resistor R1, a standard resistor R2, a standard resistor R3, a standard resistor R4, a voltmeter V1, a voltmeter V2, and the two resistance electrical connection sockets provided in Embodiment 1.

[0066] The standard resistor R0 is installed on one of the resistor electrical connection sockets. x Installed on another resistor electrical connection seat, voltmeter V1, voltmeter V2, standard resistor R1, standard resistor R2, standard resistor R3, standard resistor R4 are all fixed on substrate 3. Power source E and substrate 3 are detachably matched, and the two ends of power source E are respectively connected to the second conductive column 43 where the standard resistor R0 is located and the resistor to be measured R through wires with alligator clips. x The fourth conductive column 45 is located at the position where the ratio of the resistance value of the standard resistor R3 to the resistance value of the standard resistor R1 is equal to the ratio of the resistance value of the standard resistor R4 to the resistance value of the standard resistor R2.

[0067] See also Figure 8 In this embodiment, one of the connection states of the resistance test circuit board is as follows: the first conductive column 42 and the third conductive column 44 at the location of the standard resistor R0 are electrically connected to the two ends of the voltmeter V1 through the wire with the alligator clip, and the fourth conductive column 45 at the location of the standard resistor R0 and the resistor to be tested R xThe second conductive column 43 is electrically connected to the resistance R x The first conductive column 42 and the third conductive column 44 are electrically connected to two ends of the voltage meter V2, respectively. Thus, the circuit shown in Embodiment 2 is formed.

[0068] For the resistance test circuit board, in this connection state, resistors with different known resistance values ​​are used as the resistance to be tested R x The test was conducted and compared with the conventional volt-volt method circuit without the resistor electrical connection socket provided in Example 1. The resistance R x The resistance test results are shown in Table 1.

[0069] Table 1

[0070]

[0071] It can be seen that the average error of this embodiment is significantly reduced compared with the average error of the traditional volt-volt method circuit test. x When the actual resistance value is small, the drop is particularly obvious, indicating that the connection state of the above resistance test circuit board effectively reduces the contact resistance.

[0072] See also Fig. 9 , another connection state of the resistance test circuit board in this embodiment is as follows: through the wire with an alligator clip, the first conductive column 42 at the standard resistor R0 is electrically connected to the end of the standard resistor R1 away from the standard resistor R3, the third conductive column 44 at the standard resistor R0 is electrically connected to the end of the standard resistor R2 away from the standard resistor R4, and the fourth conductive column 45 at the standard resistor R0 is electrically connected to the end of the standard resistor R2 away from the standard resistor R4. x The second conductive column 43 is electrically connected to the resistance R x The first conductive column 42 is electrically connected to the end of the standard resistor R4 away from the standard resistor R2. x The third conductive column 44 is electrically connected to the end of the standard resistor R3 away from the standard resistor R1, and the two ends of the voltmeter V2 are respectively electrically connected between the standard resistor R2 and the standard resistor R4, and between the standard resistor R1 and the standard resistor R3, thereby realizing the circuit shown in Example 3.

[0073] For the resistance test circuit board, in this connection state, resistors with different known resistance values ​​are used as the resistance to be tested R x The test was conducted and compared with the conventional Wheatstone bridge circuit without the resistor electrical connection socket provided in Example 1. x The resistance test results are shown in Table 2.

[0074] Table 2

[0075]

[0076] It can be seen that the average error of this embodiment is significantly reduced compared with the average error of the traditional Wheatstone bridge circuit test. x When the actual resistance value is small, the drop is particularly obvious, indicating that the connection state of the above resistance test circuit board effectively reduces the contact resistance.

[0077] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A resistor electrical connection socket, characterized in that: It comprises an insulating base (41), a first conductive column (42), a second conductive column (43), a third conductive column (44), a fourth conductive column (45), a first conductive sheet (46) and a second conductive sheet; The first conductive sheet (46) and the second conductive sheet are detachably mounted on the insulating base (41) and are arranged at intervals, and the first conductive sheet (46) and the second conductive sheet are respectively used to contact two ends of the resistor and press the two ends of the resistor onto the insulating base (41); The first conductive column (42), the second conductive column (43), the third conductive column (44) and the fourth conductive column (45) are all arranged on the insulating base (41) and are arranged at intervals between each other; the first conductive sheet (46) contacts the first conductive column (42) and the second conductive column (43) at the same time; and the second conductive sheet contacts the third conductive column (44) and the fourth conductive column (45) at the same time.

2. The resistor electrical connection socket according to claim 1, characterized in that: The first conductive column (42) is provided with an external thread, and a first fastening nut is threadedly connected to the first conductive column (42), and the first fastening nut presses the first conductive sheet (46) onto the insulating seat (41).

3. The resistor electrical connection seat according to claim 2, characterized in that: A portion of the external thread on the first conductive column (42) is exposed outside the first fastening nut.

4. The resistor electrical connection socket according to claim 1, characterized in that: The first conductive sheet (46) is provided with a first avoidance hole (461), and the first conductive column (42) is passed through the first avoidance hole (461) and is in contact with the inner wall of the first avoidance hole (461).

5. The resistor electrical connection socket according to claim 1, characterized in that: The insulating seat (41) is provided with a first limiting groove (411) extending along a first direction, the first limiting groove (411) is used to accommodate a resistor, one end of the first limiting groove (411) is located between the first conductive column (42) and the second conductive column (43), and the other end of the first limiting groove (411) is located between the third conductive column (44) and the fourth conductive column (45).

6. The resistor electrical connection socket according to claim 5, characterized in that: The insulating seat body (41) is also provided with a second limiting groove (412) and a third limiting groove (413); the second limiting groove (412) and the third limiting groove (413) are respectively located at two ends of the first limiting groove (411) and are connected to the first limiting groove (411); the first conductive sheet (46) is located in the second limiting groove (412), and the second conductive sheet is located in the third limiting groove (413).

7. The resistor electrical connection socket according to claim 6, characterized in that: The first conductive pillar (42) and the second conductive pillar (43) are both partially located outside the second limiting groove (412), and the third conductive pillar (44) and the fourth conductive pillar (45) are both partially located outside the third limiting groove (413).

8. The resistor electrical connection socket according to claim 5, characterized in that: A first fastener is provided between the first conductive column (42) and the second conductive column (43), and the first fastener presses the first conductive sheet (46) onto the insulating base (41); and / or a second fastener is provided between the third conductive column (44) and the fourth conductive column (45), and the second fastener presses the second conductive sheet onto the insulating base (41).

9. A circuit, characterized in that: The invention comprises a resistor and a resistor electrical connection seat as claimed in any one of claims 1 to 8, wherein the first conductive sheet (46) and the second conductive sheet respectively press the two ends of the resistor onto the insulating seat body (41), and the first conductive column (42), the second conductive column (43), the third conductive column (44) and the fourth conductive column (45) are each connected to at most one crocodile clip.

10. A resistance test circuit board, characterized in that: The invention comprises a substrate (3) and the circuit according to claim 9 arranged on the substrate (3).

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