JP2023083751A - Resistor - Google Patents

Abstract

To provide a resistor which allows reduction in resistance.SOLUTION: A resistor 10 comprises: a resistive element 12; electrodes 14, 16 which are connected to one end 12A and the other end 12B of the resistive element 12, respectively; and adjustment electrodes 24, 26 which are disposed such that they are in contact with the electrodes 14, 16, respectively. The adjustment electrodes 24, 26 respectively have overlapping parts 32, 36 which reach the resistive element 12 and are in contact with the resistive element 12.SELECTED DRAWING: Figure 2

Description

The present invention relates to resistors.

Japanese Patent Laid-Open No. 2002-200000 discloses a resistor for current detection in which electrodes are provided at both ends of a resistor.

JP 2015-083944 A

In order to allow a large current to flow through such a resistor, it is necessary to reduce the resistance of the resistor, and in order to reduce the resistance of the resistor, it is necessary to reduce the resistance value of the resistor. As a method of reducing the resistance value of the resistor, there is a method of reducing the length dimension of the resistor between both electrodes.

However, there is a limit to reducing the length of the resistor because it is necessary to secure a bonding area for bonding with the electrode at the end of the resistor.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a resistor capable of reducing resistance.

A resistor according to one aspect of the present invention comprises a resistor, an electrode connected to an end of the resistor, and an adjustment electrode arranged in contact with the electrode, wherein the adjustment electrode is the It has an overlap extending over and in contact with the resistor.

According to this aspect, the resistor comprises an adjustment electrode arranged in contact with the electrode, the adjustment electrode having an overlap extending over and in contact with the resistor. Therefore, since the overlapping portion of the adjusting electrode extending over the resistor is in contact with the resistor, the length of the resistor can be substantially reduced by the overlapping portion.

Therefore, even if the length of the resistor cannot be reduced in order to secure the bonding area with the electrode at the end of the resistor, the length of the resistor is substantially reduced by the overlapping portion of the adjustment electrode. It is possible to reduce the resistance of the resistor by making it smaller. This allows a large current to flow through the resistor.

FIG. 1 is a perspective view showing a resistor according to the first embodiment. FIG. FIG. 2 is a cross-sectional view showing the resistor according to the first embodiment. FIG. 3 is a cross-sectional view showing a usage example of the resistor according to the first embodiment. FIG. 4 is an explanatory diagram showing how the overlapping margin between the resistor and the adjustment electrode of the resistor according to the first embodiment is changed. FIG. 5 is a diagram showing the relationship between the overlapping margin of the resistor and the adjustment electrode and the resistance value between the detection terminals. FIG. 6 is a diagram showing the relationship between the overlapping margin of the resistor and adjustment electrode and the TCR of the resistor. FIG. 7 is a diagram showing the relationship between the thickness dimension of the adjustment electrode of the resistor and the TCR of the resistor according to the first embodiment. FIG. 8 is an explanatory diagram showing how the positions of the detection terminals provided on the adjustment electrodes are changed. FIG. 9 is a plan view for explaining holes formed in the adjustment electrodes. FIG. 10 is an explanatory diagram showing how the position of the hole formed in the adjustment electrode is changed. FIG. 11 is an explanatory diagram showing the current flow when the adjustment electrode is provided with a hole. FIG. 12 is a diagram showing the relationship between the temperature of the resistor and the TCR of the resistor when the distance from the sensing terminal of the adjustment electrode to the hole is 0.0 mm. FIG. 13 is a graph showing the relationship between the temperature of the resistor and the TCR of the resistor when the distance from the sensing terminal of the adjustment electrode to the hole is 0.6 mm. FIG. 14 is a graph showing the relationship between the temperature of the resistor and the TCR of the resistor when the distance from the detection terminal of the adjustment electrode to the hole is 1.5 mm. FIG. 15 is a plan view showing a resistor according to the second embodiment; FIG. FIG. 16 is an explanatory diagram showing how the positions of the detection terminals provided on the linear adjustment electrodes are changed in the width direction. FIG. 17 shows the relationship between the temperature of the resistor and the TCR of the resistor when the detection terminal provided in each adjustment electrode is changed in the width direction in the linear adjustment electrode having a hole of a certain length. It is a diagram. FIG. 18 is a line showing the relationship between the temperature of the resistor and the TCR of the resistor when the detection terminal provided in each adjustment electrode is changed in the width direction in linear adjustment electrodes having holes of different lengths. It is a diagram. FIG. 19 is an explanatory diagram showing how the position of the detection terminal provided on the bending adjustment electrode is changed in the width direction. FIG. 20 is a line showing the relationship between the temperature of the resistor and the TCR of the resistor when the detection terminal provided in each adjustment electrode is changed in the width direction in the bent adjustment electrode having a hole of a certain length. It is a diagram. FIG. 21 is a diagram showing the relationship between the temperature of the resistor and the TCR of the resistor when the detection terminal provided in each adjustment electrode is changed in the width direction in bent adjustment electrodes having holes of different lengths; is. FIG. 22 is an explanatory view showing how the position of the detection terminal provided on the adjusting electrode bent at right angles is changed in the width direction. FIG. 23 shows the relationship between the temperature of the resistor and the TCR of the resistor when the detection terminal provided in each adjustment electrode is changed in the width direction in the adjustment electrode bent at right angles and having a hole of a certain length. Fig. 3 is a diagram showing; FIG. 24 shows the relationship between the temperature of the resistor and the TCR of the resistor when the detection terminal provided in each adjustment electrode is changed in the width direction in the adjustment electrodes bent at right angles and having holes of different lengths. It is a diagram.

A shunt resistor corresponding to a current exceeding 400 A needs to have a resistance value of 100 μΩ or less in order to suppress heat generation. In this case, in order to widen the cross-sectional area of the resistor, it is necessary to set the width dimension to 35 mm or more and the thickness dimension to 4 mm or more, which increases the size of the shunt resistor.

When fabricating a shunt resistor with such a shape, it becomes difficult to join the resistor and the electrode, and welding a thick resistor requires a special welding method in order to obtain a uniform joining state. Higher manufacturing costs.

A shunt resistor that detects a current of 1000 A must have a resistance value of 20 μΩ. In such a shunt resistor, the ratio of the resistance value of the electrode to the entire resistor is high, and is greatly affected by the temperature coefficient of resistance (TCR) of the material of the electrode.

In order to reduce the influence of the TCR of the electrode, it is necessary to position the detection terminal for detecting the voltage closer to the junction of the resistor.

Here, when a resistor having a large thickness dimension is welded to an electrode, a wide weld bead is formed at the welded portion. When providing the detection terminal on this electrode, it is necessary to provide the detection terminal avoiding the weld bead, and the detection terminal must be provided at a position away from the resistor and the weld bead between the resistor and the electrode. As a result, the TCR of the electrode becomes more influential, and the TCR of the shunt resistor becomes as high as, for example, several hundred ppm/°C.

Therefore, in order to solve these problems, the resistor of this embodiment was devised.

(First embodiment)
A resistor 10 according to a first embodiment of the present invention will be described below.

FIG. 1 is a perspective view showing a resistor 10 according to the first embodiment. FIG. 2 is a cross-sectional view showing the resistor 10 according to the first embodiment. This resistor 10 is a shunt resistor used for current detection.

As shown in FIGS. 1 and 2, the resistor 10 has a resistor 12, and the resistor 12 is shaped like a rectangular plate.

The resistor 12 is generally made of a Cu--Mn alloy. Examples of Cu--Mn alloys include Cu--Mn--Ni alloy (manganin: registered trademark) and Cu--Mn--Sn ( geranin: registered trademark).

The resistor 12 of this embodiment is made of a Cu--Mn--Ni alloy (manganin: registered trademark).

The resistor 10 also includes a first electrode 14 connected to one end 12A of the resistor 12 and a second electrode 16 connected to the other end 12B of the resistor 12. Configured.

Each electrode 14, 16 is formed in a rectangular plate shape, and each electrode 14, 16 is made of Cu (copper).

A pair of first reference holes 18 are formed in the first electrode 14 at the end opposite to the resistor 12 . Both first reference holes 18 are arranged side by side in the width direction H of the first electrode 14 .

A pair of second reference holes 20 are formed in the second electrode 16 at the end opposite to the resistor 12 . Both second reference holes 20 are arranged side by side in the width direction H of the second electrode 16 .

In addition, the resistor 10 has a first adjustment electrode 24, which is an adjustment electrode arranged on the one surface 22 side while being in contact with the first electrode 14, and is arranged on the one surface 22 side while being in contact with the second electrode 16. and a second adjustment electrode 26 that is an adjustment electrode.

Each adjustment electrode 24, 26 is formed in a rectangular plate shape, and each adjustment electrode 24, 26 is made of Cu (copper).

A first adjustment electrode 24 is arranged along the first electrode 14 and the first adjustment electrode 24 overlaps the first electrode 14 . The first adjustment electrode 24 is formed in a plate shape, and the thickness dimension T1 of the first adjustment electrode 24 is greater than or equal to the thickness dimension T2 of the first electrode 14 (see FIG. 2).

A pair of first adjustment reference holes 30 are formed in the first adjustment electrode 24 . The first adjustment reference holes 30 are arranged side by side in the width direction H of the first adjustment electrode 24 .

Each first adjustment reference hole 30 of the first adjustment electrode 24 is aligned with the first reference hole 18 of the first electrode 14, and screws (not shown) are inserted into the first adjustment reference hole 30 and the first reference hole 18 and screwed. do. Thereby, the first adjustment electrode 24 and the first electrode 14 can be fixed at the prescribed positions.

In this fixed state, the tip of the first adjustment electrode 24 contacts the resistor 12 while extending over the resistor 12 and overlapping a portion of the resistor 12 . As a result, a first overlapping portion 32 that overlaps the resistor 12 is formed in the first adjusting electrode 24 , and the first overlapping portion 32 is electrically connected to the resistor 12 .

The area where the first overlapping portion 32 overlaps the one surface 22 of the resistor 12 is 70% or less of the area of the one surface 22 of the resistor 12 .

A second adjustment electrode 26 is arranged along the second electrode 16 , and the second adjustment electrode 26 overlaps the second electrode 16 . The second adjustment electrode 26 is formed in a plate shape, and the thickness dimension T3 of the second adjustment electrode 26 is equal to or greater than the thickness dimension T4 of the second electrode 16 (see FIG. 2).

A pair of second adjustment reference holes 34 are formed in the second adjustment electrode 26 . The second adjustment reference holes 34 are arranged side by side in the width direction H of the second adjustment electrode 26 .

Each second adjustment reference hole 34 of the second adjustment electrode 26 is aligned with the second reference hole 20 of the second electrode 16, and a screw (not shown) is inserted into the second adjustment reference hole 34 and the second reference hole 20 and screwed. do. Thereby, the second adjustment electrode 26 and the second electrode 16 can be fixed at prescribed positions.

In this fixed state, the distal end portion of the second adjustment electrode 26 is in contact with the resistor 12 while being overlapped with a portion of the resistor 12 . As a result, the second adjustment electrode 26 is formed with a second overlapping portion 36 overlapping the resistor 12 , and the second overlapping portion 36 is electrically connected to the resistor 12 .

The area where the second double overlapped portion 36 overlaps the one surface 22 of the resistor 12 is 70% or less of the area of the one surface 22 of the resistor 12 .

Here, in this embodiment, the case where the first electrode 14 and the resistor 12 and the first adjustment electrode 24 are electrically connected while being in contact with each other will be described, but the present invention is not limited to this. . For example, the first electrode 14 and resistor 12 and the first adjustment electrode 24 may be electrically connected by welding or brazing.

Moreover, although the case where the second electrode 16 and the resistor 12 and the second adjustment electrode 26 are electrically connected while being in contact with each other will be described, the present invention is not limited to this. For example, the second electrode 16 and resistor 12 and the second adjustment electrode 26 may be electrically connected by welding or brazing.

The first adjustment electrode 24 has a projecting first detection terminal 40 at its tip, and the first detection terminal 40 is formed in a bar shape. The first detection terminal 40 is arranged at the tip of the first adjustment electrode 24 , and the first detection terminal 40 is provided on the first overlapping portion 32 . Thereby, the first detection terminal 40 is arranged on the resistor 12 .

The second adjustment electrode 26 has a projecting second detection terminal 42 at its tip, and the second detection terminal 42 is formed in a bar shape. The second detection terminal 42 is arranged at the tip of the second adjustment electrode 26 , and the second detection terminal 42 is provided on the second double overlap portion 36 . Thereby, the second adjustment electrode 26 is arranged on the resistor 12 .

The first adjustment electrode 24 and the second adjustment electrode 26 are made of Cu (copper).

A first bolt hole 44 is formed in the first adjustment electrode 24 on the base end side opposite to the first overlapping portion 32, and a bolt for fixing a bus bar, which will be described later, is inserted in the first bolt hole 44. is inserted. An outer peripheral portion of the first bolt hole 44 constitutes a first conducting portion 46 to which the busbar is electrically connected.

A second bolt hole 48 is formed in the second adjustment electrode 26 on the base end side opposite to the second double bent portion 36, and a bolt for fixing a bus bar, which will be described later, is inserted in the second bolt hole 48. is inserted. The outer peripheral portion of the second bolt hole 48 constitutes a second conducting portion 50 to which the busbar is electrically connected.

A first hole 52 is formed in the first adjustment electrode 24 in a direction closer to the first conducting portion 46 than the first detection terminal 40 , and the first hole 52 passes through the first adjustment electrode 24 . At least part of the first hole 52 is arranged in the first overlapping portion 32 , and the first hole 52 is arranged in the first overlapping portion 32 in this embodiment.

A second hole 54 is formed in the second adjustment electrode 26 in a direction closer to the second conducting portion 50 than the second detection terminal 42 , and the second hole 54 passes through the second adjustment electrode 26 . At least part of the second hole 54 is arranged in the second double lamination portion 36 , and in the present embodiment, the second hole 54 is arranged in the second double lamination portion 36 .

FIG. 3 is a cross-sectional view showing a usage example of the resistor 10 according to the first embodiment. FIG. 3 shows a first connection form 62 in which a busbar is connected to one side 60 of the resistor 10, and a second connection form 65 in which a busbar is connected to the other side 64 of the resistor 10. FIG.

As shown in FIG. 3 , when using the resistor 10 , the first bus bar 70 is placed over the first conductive portion 46 on one side 60 or the other side 64 of the first adjustment electrode 24 . Next, a bolt (not shown) is inserted through the first insertion hole 72 of the first bus bar 70 and the first bolt hole 44 of the first adjustment electrode 24 . This bolt electrically connects the first adjustment electrode 24 and the first bus bar 70 .

Also, the second bus bar 74 is superimposed on the second conductive portion 50 on one surface 60 or the other surface 64 of the second adjustment electrode 26 . Next, a bolt (not shown) is inserted through the second insertion hole 76 of the second bus bar 74 and the second bolt hole 48 of the second adjustment electrode 26 . This bolt electrically connects the second adjustment electrode 26 and the second bus bar 74 .

As a result, as an example, the current from the first bus bar 70 flows to the second bus bar 74 via the first adjustment electrode 24, the first electrode 14, the resistor 12, the second adjustment electrode 26, and the second electrode 16. be able to.

Also, by measuring the voltage between the first detection terminal 40 of the first adjustment electrode 24 and the second detection terminal 42 of the second adjustment electrode 26, the current flowing through the resistor 12 between the two detection terminals 40, 42 is can be measured.

(Dimensions of each part)
Next, the dimensions of each part of the resistor 10 will be described with reference to FIGS. 1 and 2. FIG.

A length dimension L1 from the end of the first electrode 14 to the end of the second electrode 16 is, for example, 80 mm. A length dimension L2 of the resistor 12 in the direction N in which the electrodes 14, 16 and the resistor 12 are arranged is, for example, 8.2 mm.

A length dimension L3 of the first electrode 14 is 35.9 mm as an example. A length dimension L4 of the second electrode 16 is, for example, 35.9 mm.

A first overlapping margin K1 by which the first overlapping portion 32 of the first adjustment electrode 24 overlaps with the resistor 12 is, for example, 2 mm. A double overlap K2 where the second adjustment electrode 26 overlaps the resistor 12 is 2 mm, for example.

A diameter D1 of the first detection terminal 40 is, for example, 1 mm. A diameter D2 of the second detection terminal 42 is, for example, 1 mm.

The first detection terminal 40 is arranged at the center of the width direction H of the first adjustment electrode 24 . Ideally, the first detection terminal 40 is arranged at the tip of the first adjustment electrode 24, and the separation distance from the first detection terminal 40 to the tip of the first adjustment electrode 24 is, for example, 0 mm.

The second detection terminal 42 is arranged at the center of the width direction H of the second adjustment electrode 26 . Ideally, the second detection terminal 42 is arranged at the tip of the second adjustment electrode 26, and the separation distance from the second detection terminal 42 to the tip of the second adjustment electrode 26 is, for example, 0 mm.

A separation distance R1 from the first detection terminal 40 to the first hole 52 is determined by specifications. A width dimension W1 in the row direction N of the first holes 52 is, for example, 1 mm. A length dimension L5 in the width direction H of the first hole 52 is determined in a range of 1 mm or more and 11 mm or less according to specifications (see FIG. 1).

A separation distance R2 from the second detection terminal 42 to the second hole 54 is determined by specifications. A width dimension W2 in the row direction N of the second holes 54 is, for example, 1 mm. A length dimension L6 in the width direction H of the second hole 54 is determined in a range of 1 mm or more and 11 mm or less according to specifications (see FIG. 1).

In this embodiment, the TCR of resistor 10 can be adjusted by varying the size and position of each hole 52,54. As an example, in the resistor 10 of the present embodiment, even if the resistance value is 100 μΩ or less, it is possible to maintain the TCR performance of ±50 ppm/°C.

(Action and effect)
Next, the effects of the first embodiment will be described.

The resistor 10 of the present embodiment is arranged in contact with the resistor 12, the electrodes 14 and 16 connected to one end 12A and the other end 12B of the resistor 12, and the electrodes 14 and 16. adjustment electrodes 24 and 26, respectively. Each adjustment electrode 24 , 26 has a respective overlap 32 , 36 that spans and contacts resistor 12 .

In this configuration, the resistor 10 includes a respective adjustment electrode 24,26 positioned in contact with each electrode 14,16, each adjustment electrode 24,26 extending over and contacting the resistor 12. each overlap 32,36. Therefore, since the overlapping portions 32, 36 of the adjusting electrodes 24, 26 extending over the resistor 12 are in contact with the resistor 12, the length of the resistor 12 is substantially reduced by the overlapping portions 32, 36. can be made smaller.

As a result, even if the length dimension of the resistor cannot be reduced in order to secure the bonding area with the electrode at the end of the resistor, the overlapping portions 32 and 36 of the adjustment electrodes 24 and 26 can be maintained. allows the length dimension of the resistor 12 to be substantially reduced. Therefore, it is possible to reduce the resistance of the resistor 10 . This allows a large current to flow through the resistor 10 .

Each adjustment electrode 24 , 26 which substantially reduces the length dimension of the resistor 12 is arranged in contact with each electrode 14 , 16 . In addition, each of the adjustment electrodes 24 and 26 is in contact with the resistor 12 at overlapping portions 32 and 36 extending over the resistor 12 .

Therefore, part of the heat generated by the resistor 12 can be transferred to the adjustment electrodes 24 and 26 and released from the adjustment electrodes.

In addition, the adjustment electrodes 24 and 26 arranged in contact with the electrodes 14 and 16 can substantially increase the thickness of the electrodes 14 and 16 connected to the resistor 12 . As a result, a portion of the heat transferred from the resistor 12 to each electrode 14,16 can be transferred to each adjustment electrode 24,26.

Therefore, the heat dissipation effect of the resistor 10 can be enhanced, and the temperature rise of the resistor 10 can be suppressed.

In this embodiment, the adjustment electrodes 24 and 26 are provided with the overlapping portions 32 and 36 to reduce the resistance of the resistor 10 and enhance the heat radiation effect, but the present invention is not limited to this. For example, one of the adjustment electrodes 24 and 26 may be provided with an overlapping portion to reduce the resistance of the resistor 10 and enhance the heat radiation effect.

In the present embodiment, the electrodes of the resistor 10 are configured by the stacked electrodes 14 and 16 and the adjustment electrodes 24 and 26, thereby ensuring a heat dissipation path with a large heat capacity and allowing the electrodes 14 and 16 to It is possible to suppress the thickness dimension of the resistor to be joined to.

As a result, the resistor 12 and the electrodes 14 and 16 can be joined without using a special welding method as in the case of welding a thick resistor and electrodes. Therefore, the manufacturing cost of the resistor 10 can be suppressed.

Also, in the resistor 10 of the present embodiment, the area where the overlapping portions 32 and 36 overlap the one surface 22 of the 12 resistor is 70% or less of the area of the one surface 22 of the resistor 12 .

In this configuration, it is possible to suppress an increase in TCR while lowering the resistance value of the resistor.

<Overlapping margin and TCR>
The relationship between the TCR of the resistor 10 and the overlapping margins K1, K2 where the overlapping portions 32, 36 of the adjusting electrodes 24, 26 overlap the resistor 12 will be described.

The TCR of the resistor 10 varies depending on the overlapping margins K1 and K2 where the overlapping portions 32 and 36 overlap the resistor 12. FIG.

FIG. 4 is an explanatory diagram showing how the overlapping margin between the resistor and the adjustment electrode of the resistor according to the first embodiment is changed. FIG. 4 shows a first resistor 80, a second resistor 82, and a third resistor 84 with different overlapping distances K1 and K2 between the adjusting electrodes 24 and 26 and the resistor 12. .

In the first resistor 80, the electrodes 14, 16 and the adjustment electrodes 24, 26 are matched, and the overlaps K1, K2 of the adjustment electrodes 24, 26 with the resistor 12 are 0 mm. In the second resistor 82, the overlapping margins K1 and K2 of the adjustment electrodes 24 and 26 on the resistor 12 are 2 mm. In the third resistor 84, the overlapping margins K1 and K2 of the adjusting electrodes 24 and 26 on the resistor 12 are 4 mm.

The dimensions and materials of other portions of each resistor 80, 82, 84 are the same as described above. It is assumed that the holes 52 and 54 are not formed in the adjustment electrodes 24 and 26, respectively.

FIG. 5 is a diagram showing the relationship between the overlapping margins K1 and K2 of the resistor 12 and the adjustment electrodes 24 and 26 and the resistance values between the detection terminals 40 and 42. As shown in FIG. FIG. 5 shows the results of measuring the resistance values of the resistors 80, 82, 84 when the overlapping distances K1, K2 between the resistor 12 and the adjustment electrodes 24, 26 are varied.

FIG. 5 also shows the measurement results of resistors in which the overlapping distances K1 and K2 between the resistor 12 and the adjustment electrodes 24 and 26 are 1 mm and 3 mm.

The overlapping margin in FIG. 5 indicates the overlapping margin between one adjusting electrode and the resistor 12, and the overlapping margin of the entire resistor is twice the overlapping margin of one side.

More specifically, when the overlapping margin between one adjustment electrode and the resistor 12 is 2 mm, the overlapping margin of the resistor as a whole is 4 mm. Since the width dimension of each of the adjustment electrodes 24 and 26 and the resistor 12 is 36 mm, the overlapping area of the adjustment electrodes 24 and 26 and the resistor 12 is 144 mm ² .

It can be seen from FIG. 5 that the resistance value of the resistor decreases as the overlapping margin increases. Also, when the overlap was 4 mm, the resistance value could be reduced to about 1/5.

FIG. 6 is a diagram showing the relationship between the overlapping margins K1 and K2 of the resistor 12 and the adjustment electrodes 24 and 26 and the TCR of the resistor 10. As shown in FIG.

Here, when the overlapping margins K1 and K2 are 3 mm, the ratio of the area where the adjustment electrodes 24 and 26 overlap the resistor 12 to the area of the one surface 22 of the resistor 12 is approximately 73%. Further, when the overlapping margins K1 and K2 are 4 mm, the area where both the adjustment electrodes 24 and 26 overlap the resistor 12 occupies about 98% of the area of the one surface 22 of the resistor 12 . FIG. 6 shows this ratio, the area where both adjustment electrodes 24 and 26 overlap the resistor 12, and the overlap margins K1 and K2.

From FIG. 6, it can be seen that TCR, which indicates a change in resistance value per temperature difference of 1° C., is low when each of the overlapping margins K1 and K2 is 3 mm or less. However, if the overlapping margins K1 and K2 exceed 4 mm, the TCR increases and the function of the resistor 10 deteriorates.

This phenomenon causes the resistance of the adjustment electrodes 24, 26 to have a greater effect on the resistance of the resistor 10, and the TCR of the copper electrodes 14, 16, which have a relatively large TCR, to affect the TCR of the resistor 10. is considered to be larger.

Therefore, the area where the overlapping portions 32 and 36 overlap the one surface 22 of the resistor 12 is preferably 70% or less of the area of the one surface 22 of the resistor 12 .

Also, in the resistor 10 of the present embodiment, the thickness dimensions T1 and T3 of the adjustment electrodes 24 and 26 are equal to or greater than the thickness dimensions T2 and T4 of the electrodes 14 and 16, respectively.

In this configuration, compared with the case where the thickness dimensions T1 and T3 of the adjustment electrodes 24 and 26 are less than the thickness dimensions T2 and T4 of the electrodes 14 and 16, the heat radiation effect can be enhanced, and the TCR of the resistor 10 can be improved. can be lowered.

<Thickness dimension and TCR of adjustment electrode>
The relationship between the thickness T1, T3 of each adjustment electrode 24, 26 and the TCR of the resistor 10 will be described.

The TCR of the resistor 10 changes depending on the thicknesses T1 and T3 of the adjustment electrodes 24 and 26, respectively.

FIG. 7 is a diagram showing the relationship between the thickness dimensions T1 and T3 of the adjustment electrodes 24 and 26 of the resistor 10 and the TCR of the resistor 10 according to the first embodiment. , 42 are shown.

FIG. 7 shows the results obtained by simulation of the TCR of the resistor 10 when the adjustment electrodes 24 and 26 having different thickness dimensions are attached to the resistor 10 described above.

From these results, it can be seen that the TCR value is good when the thicknesses T1 and T3 of the adjustment electrodes 24 and 26 are 0.5 mm or more. On the other hand, if the thicknesses T1 and T3 of the adjustment electrodes 24 and 26 are less than 0.5 mm, the TCR value will deteriorate.

The reason for this is that if the thickness dimensions T1 and T3 of the adjustment electrodes 24 and 26 are larger than 0.5 mm, even if the holes 52 and 54 exhibit the effect of lowering the TCR, It becomes difficult for the current to enter, and the current density in each of the detection terminals 40 and 42 becomes low. As a result, the voltage drop between the detection terminals 40 and 42 appears to be small, so that the TCR value is not degraded.

On the other hand, if the thickness dimensions T1 and T3 of the adjustment electrodes 24 and 26 are smaller than 0.5 mm, the effect of the holes 52 and 54 in lowering the TCR becomes small, and current tends to flow into the detection terminals 40 and 42. . As a result, the current density in the detection terminals 40 and 42 increases, and the voltage drop between the detection terminals 40 and 42 appears to be significant, degrading the TCR value.

Further, in the resistor 10 of the present embodiment, each adjustment electrode 24, 26 has each projecting detection terminal 40, 42. As shown in FIG.

According to this configuration, by measuring the voltage between the first detection terminal 40 of the first adjustment electrode 24 and the second detection terminal 42 of the second adjustment electrode 26, the resistor between both detection terminals 40 and 42 The current through 12 can be measured.

In addition, the resistance values of both detection terminals 40 and 42 can be adjusted depending on the positions at which the detection terminals 40 and 42 are provided.

<Position and resistance value of detection terminal>
The relationship between the positions of the detection terminals 40 and 42 and the resistance values will be described.

FIG. 8 is an explanatory diagram showing how the positions of the detection terminals 40 and 42 provided on the adjustment electrodes 24 and 26 are changed. As shown in FIG. 8, the resistance between the detection terminals 40 and 42 varies depending on the positions of the detection terminals 40 and 42 provided on the adjustment electrodes 24 and 26 .

Specifically, when the detection terminals 40 and 42 were provided at 90, which is the most extreme position of the adjustment electrodes 24 and 26, the resistance between the detection terminals 40 and 42 was measured. In addition, when the detection terminals 40 and 42 are provided at a position 92 shifted from the tip to the base end side K by a predetermined distance, the resistance value between the detection terminals 40 and 42 was measured. Then, in the case where the detection terminals 40 and 42 are provided at a position 94 shifted to the base end side K by a predetermined distance, the resistance value between the detection terminals 40 and 42 was measured.

As a result of this measurement, it was found that as the detection terminals 40 and 42 of the adjustment electrodes 24 and 26 are shifted toward the base end side K, the resistance value between the detection terminals 40 and 42 increases.

Accordingly, by finely adjusting the positions of the detection terminals 40 and 42, the resistance value between the detection terminals 40 and 42 can be adjusted.

Also, in the resistor 10 of this embodiment, the detection terminals 40 and 42 are arranged in the overlapping portions 32 and 36, respectively.

With this configuration, each sensing terminal 40, 42 can be placed on the resistor 12 regardless of the presence or absence of bonding regions that may be formed between the resistor 12 and each of the electrodes 14, 16. FIG. This reduces the effect that each electrode 14, 16 may have on the measurements between the sensing terminals 40, 42 compared to when each sensing terminal 40, 42 is positioned over each electrode 14, 16. can do.

Further, in the resistor 10 of the present embodiment, each of the adjustment electrodes 24 and 26 has respective conductive portions 46 and 50 on the side opposite to the respective overlapping portions 32 and 36, and each of the adjustment electrodes 24 and 26 has each detection Holes 52 and 54 are formed in a direction closer to the conductive portions 46 and 50 than the terminals 40 and 42 are.

According to this configuration, holes 52 and 54 are formed between the detection terminals 40 and 42 of the adjustment electrodes 24 and 26 and the current-carrying portions 46 and 50, respectively. of TCR can be adjusted.

Also, in the resistor 10 of the present embodiment, at least a portion of each of the holes 52 and 54 is arranged in each of the overlapping portions 32 and 36 .

According to this configuration, the effect of adjusting the TCR of the resistor 10 by the holes 52 and 54 can be enhanced.

<Hole and TCR>
The relationship between each hole 52, 54 and the TCR of resistor 10 will now be described.

FIG. 9 is a plan view for explaining the holes 52, 54 formed in the adjustment electrodes 24, 26. FIG. FIG. 10 is an explanatory diagram showing how the positions of the holes 52 and 54 formed in the adjustment electrodes 24 and 26 are changed.

As shown in FIG. 9, holes 52 and 54 are formed on the base end side K of the detection terminals 40 and 42 of the adjustment electrodes 24 and 26, respectively. FIG. 10 shows cross-sections of essential parts of the fourth resistor 100 and the fifth resistor 102 .

The fourth resistor 100 is formed so that the holes 52, 54 of the adjustment electrodes 24, 26 are close to the detection terminals 40, 42 (R1, R2=0.0 mm). Also, the fifth resistor 102 is formed at positions (R1, R2=0.6 mm) where the holes 52, 54 of the adjustment electrodes 24, 26 are 0.6 mm away from the detection terminals 40, 42, respectively.

As a result, when the overlap margin is 2 mm, a part of each hole 52 , 54 is arranged in each overlapping part 32 , 36 , and 40% of each hole 52 , 54 overlaps with the resistor 12 .

FIG. 11 is an explanatory diagram showing the flow of current I when holes 52 and 54 are provided in adjustment electrodes 24 and 26, respectively.

As shown in FIG. 11, the current I flowing through each adjustment electrode 24, 26 bypasses each hole 52, 54 and flows. Therefore, when the detection terminals 40 and 42 are provided closer to the distal ends of the adjustment electrodes 24 and 26 than the holes 52 and 54 are, a part of the current I that bypasses the holes 52 and 54 flows into the detection terminals 40 and 42 . It will flow around 42.

Here, due to the presence of the holes 52 and 54, the adjustment electrodes 24 and 26 are less likely to allow current to flow in the vicinity of the detection terminals 40 and 42. As shown in FIG. In addition, when the temperature rises, the adjustment electrodes 24 and 26 made of copper have a high resistance value, making it difficult for current to flow in the vicinity of the detection terminals 40 and 42 . It should be noted that the TCR of each adjustment electrode 24, 26 made of copper is over 100 times that of the resistor 12 made of manganin.

Therefore, the resistance value near the detection terminals 40, 42 on the tip side of the holes 52, 54 is less likely to contribute to the resistance value of the resistor 10 as a whole. Lower TCR.

FIG. 12 shows the relationship between the temperature of the resistor 12 and the TCR of the resistor 10 when the separation distances R1 and R2 from the detection terminals 40 and 42 of the adjustment electrodes 24 and 26 to the holes 52 and 54 are 0.0 mm. Fig. 3 is a diagram showing relationships; FIG. 13 shows the relationship between the temperature of the resistor 12 and the TCR of the resistor 10 when the separation distances R1 and R2 from the detection terminals 40 and 42 of the adjustment electrodes 24 and 26 to the holes 52 and 54 are 0.6 mm. Fig. 3 is a diagram showing relationships; FIG. 14 shows the relationship between the temperature of the resistor 12 and the TCR of the resistor 10 when the separation distances R1 and R2 from the detection terminals 40 and 42 of the adjustment electrodes 24 and 26 to the holes 52 and 54 are 1.5 mm. Fig. 3 is a diagram showing relationships;

12 to 14 show the results of calculating the degree of influence of the relationship between the position and size of the holes 52, 54 of the adjustment electrodes 24, 26 on the TCR.

The holes 52 and 54 have width dimensions W1 and W2 of 1 mm in the length direction of the adjustment electrodes 24 and 26, and length dimensions L5 and L6 of the adjustment electrodes 24 and 26 in the width direction H of 1 mm or more and 11 mm or less. is set in the range of 12 to 14 show cases where the distances R1 and R2 from the adjustment electrodes 24 and 26 to the holes 52 and 54 are 0.0 mm, 0.6 mm and 1.5 mm.

From these results, it was found that the TCR becomes smaller when the length dimensions L5 and L6 in the width direction H of the holes 52 and 54 of the adjustment electrodes 24 and 26 are increased. Further, it was found that the smaller the distances R1 and R2 from the detection terminals 40 and 42 to the holes 52 and 54, the smaller the TCR.

When the holes 52 and 54 of the adjustment electrodes 24 and 26 are separated from the resistor 12, the effect of varying the TCR is reduced even if the holes 52 and 54 are formed in the adjustment electrodes 24 and 26. Do you get it.

From these, it is desirable to place each hole 52, 54 of each adjustment electrode 24, 26 over the resistor 12 in order to obtain the effect of varying the TCR.
(Second embodiment)
A resistor 200 according to the second embodiment will be described with reference to FIG. 15 . Note that the same or equivalent parts as those of the first embodiment are given the same reference numerals as those of the first embodiment, the explanation thereof is omitted, and only the parts different from the first embodiment are explained.

FIG. 15 is a plan view showing a resistor 200 according to the second embodiment. A resistor 200 according to the second embodiment differs from the first embodiment in the shapes of a first adjustment electrode 202 and a second adjustment electrode 204 .

The first adjustment electrode 202 has a first extension portion 206 extending along the first electrode 14 in the alignment direction N of the resistor 12 and the electrodes 14 and 16, and a first extension portion 206 extending from the first extension portion 206 in the alignment direction N. and a first extending portion 208 extending in the intersecting direction KH. The first extending portion 206 and the first extending portion 208 extend in orthogonal directions, and the first adjustment electrode 202 is formed in an L shape.

The first adjustment electrode 202 has a first curved portion 210 between the first detection terminal 40 provided on the first extension portion 206 and the first conducting portion 46 set on the first extension portion 208 . Also, the first curved portion 210 is formed between the first hole 52 formed in the first extending portion 206 and the first conductive portion 46 set in the first extending portion 208 .

When the edge forming the outer side of the L-shaped first adjustment electrode 202 is defined as an outer edge 212 and the edge forming the inner side is defined as an inner edge 214 , the first hole 52 is located on the first extending portion 206 . It is arranged closer to the outer edge 212 than the center in the width direction.

Further, the first detection terminal 40 is arranged closer to the outer edge 212 than the center of the width direction of the first extension portion 206, and the first detection terminal 40 is located at the end of the slit-shaped first hole 52. It is located near the part.

The second adjustment electrode 204 has a second extension portion 222 extending along the second electrode 16 in the alignment direction N of the resistor 12 and the electrodes 14 and 16, and an alignment direction N from the second extension portion 222. and a second extending portion 224 extending in the intersecting direction KH. The second extending portion 222 and the second extending portion 224 extend in orthogonal directions, and the second adjustment electrode 204 is formed in an L shape.

The second adjustment electrode 204 has a second curved portion 226 between the second detection terminal 42 provided on the second extension portion 222 and the second conducting portion 50 set on the second extension portion 224 . Also, the second curved portion 226 is formed between the second hole 54 formed in the second extending portion 222 and the second conducting portion 50 set in the second extending portion 224 .

When the edge forming the outer side of the L-shaped second adjustment electrode 204 is defined as an outer edge 228 and the edge forming the inner side is defined as an inner edge 230 , the second hole 54 is located on the second extending portion 222 . It is arranged closer to the outer edge 228 than the center in the width direction.

Further, the second detection terminal 42 is arranged closer to the outer edge 228 than the center of the width direction of the second extension portion 222, and the second detection terminal 42 is located at the end of the slit-shaped second hole 54. It is located near the part.

(Action and effect)
Also in the resistor 200 of this embodiment, the same effects as those of the first embodiment can be obtained with respect to the same or equivalent parts as those of the first embodiment.

In the resistor 200 of this embodiment, each of the adjustment electrodes 202 and 204 has extensions 206 and 222 extending in the direction N in which the resistor 12 and the electrodes 14 and 16 are arranged along the electrodes 14 and 16. have. Further, each of the adjustment electrodes 202 and 204 has respective extensions 208 and 224 extending from the respective extensions 206 and 222 in the direction KH intersecting the alignment direction N. As shown in FIG. Furthermore, each adjustment electrode 202, 204 is located between each detection terminal 40, 42 provided on each extension portion 206, 222 and each conductive portion 46, 50 set on each extension portion 208, 224. It has bends 210 , 226 .

In addition, in the resistor 200 of the present embodiment, each of the adjustment electrodes 202 and 204 has extension portions 206 extending along the electrodes 14 and 16 in the direction N in which the resistor 12 and the electrodes 14 and 16 are arranged. 222. Further, each of the adjustment electrodes 202 and 204 has respective extensions 208 and 224 extending from the respective extensions 206 and 222 in the direction KH intersecting the alignment direction N. As shown in FIG. Further, each adjustment electrode 202, 204 is arranged between each hole 52, 54 provided in each extension 206, 222 and each conductive section 46, 50 set in each extension 208, 224. It has parts 210 and 226 .

In these configurations, by providing each adjustment electrode 202, 204 with each curved portion 210, 226, the density of the current I flowing through each adjustment electrode 202, 204 can be increased on the inner edge 214, 230 side.

By arranging the detection terminals 40 and 42 and the holes 52 and 54 near the outer edges 212 and 228 where the density of the current I is low, the TCR adjustment effect can be enhanced.

<Straight line, detection terminal position and TCR>
The relationship between the positions of the detection terminals 40 and 42 and the TCR of the resistor in which the adjustment electrodes 202 and 204 are formed linearly will now be described.

FIG. 16 is an explanatory diagram showing how the positions of the detection terminals 40 and 42 provided on the linear adjustment electrodes 202 and 204 are changed in the width direction H. As shown in FIG. The holes 52 and 54 formed in the adjustment electrodes 202 and 204 are not shown in FIG. 16 because the sizes of the holes 52 and 54 are changed as described later.

(Sixth resistor)
The sixth resistor 300 has outer edges 212 and 228 on one edge of each of the adjustment electrodes 202 and 204 and inner edges 214 and 230 on the other edge. is arranged at the center in the width direction H of the . Other configurations are the same as those of the first embodiment.

The second detection terminal 42 of the second adjustment electrode 204 is arranged at the center of the width direction H of the second adjustment electrode 204, and other configurations are the same as those of the first embodiment.

(Seventh resistor)
The seventh resistor 302 has outer edges 212 and 228 on one edge of each of the adjustment electrodes 202 and 204 and inner edges 214 and 230 on the other edge. It is arranged near the inner edges 214 and 230 . Other configurations are the same as those of the first embodiment.

(Eighth resistor)
The eighth resistor 304 has outer edges 212 and 228 on one edge of each of the adjustment electrodes 202 and 204 and inner edges 214 and 230 on the other edge. It is arranged near the outer edges 212 and 228 . Other configurations are the same as those of the first embodiment.

FIG. 17 shows the resistor 12 when the detection terminals 40 and 42 provided to the adjustment electrodes 202 and 204 are changed in the width direction H in the straight adjustment electrodes 202 and 204 having holes of a certain length. 3 is a plot of temperature versus TCR of resistors 300-304. FIG. FIG. 18 shows linear adjustment electrodes 202 and 204 having holes 52 and 54 with different lengths, and the detection terminals 40 and 42 provided in the adjustment electrodes 202 and 204 are changed in the width direction H. 4 is a diagram showing the relationship between the temperature of resistor 12 and the TCR of resistors 300-304; FIG.

FIG. 17 shows sixth resistors 300 to eighth resistors 300 having adjustment electrodes 202, 204 formed with respective holes 52, 54 having length dimensions L5, L6 of 1 mm and width dimensions W1, W2 of 0.5 mm. In instrument 304, the TCR measured at each temperature is shown. 18, in the sixth resistor 300 to the eighth resistor 304, the width dimensions W1 and W2 of the holes 52 and 54 are 1.0 mm, and the length dimensions L5 and L6 of the holes 52 and 54 are 1 mm, 5 mm, and 11 mm. The TCR measured at each temperature is shown. See FIGS. 1 and 2 for the length dimensions L5 and L6 and the width dimensions W1 and W2.

In each resistor 300 to 304 having adjustment electrodes 202 and 204 formed with holes 52 and 54 having length dimensions L5 and L6 of 1 mm and width dimensions W1 and W2 of 0.5 mm, detection terminals 40, It was found that the TCR showed approximately the same value regardless of the position of 42.

Also, in the resistors 300 to 304 having adjustment electrodes 202 and 204 with holes 52 and 54 having width dimensions W1 and W2 of 1.0 mm, when the length dimensions L5 and L6 are changed, each detection Depending on the positions of terminals 40 and 42, the variation of TCR is different.

When the seventh resistor 302 and the eighth resistor 304 have the same TCR variation and the length L5, L6 of each hole 52, 54 is 5 mm or more, the length L5 of each hole 52, 54 , L6, the TCR becomes smaller.

It was also found that in the sixth resistor 300, the TCR decreased as the lengths L5 and L6 of the holes 52 and 54 increased.

<45 degrees, detection terminal position and TCR>
The relationship between the positions of the detection terminals 40 and 42 and the TCR of the resistor in which the adjustment electrodes 202 and 204 are bent at 45 degrees will be described.

FIG. 19 is an explanatory diagram showing how the positions of the detection terminals 40 and 42 provided on the bending adjustment electrodes 202 and 204 are changed in the width direction. The holes 52 and 54 formed in the adjustment electrodes 202 and 204 are not shown in FIG. 19 because the sizes of the holes 52 and 54 are changed as described later.

A ninth resistor 310, a tenth resistor 312, and an eleventh resistor 314 are shown in FIG. In each resistor 310 to 314, each extension 208, 224 extends from each extension 206, 222 in a direction inclined by 45 degrees.

(Ninth resistor)
When the ninth resistor 310 has outer edges 212 and 228 that form the outer sides of the adjustment electrodes 202 and 204 and inner edges 214 and 230 that form the inner sides of the adjustment electrodes 202 and 204, the detection terminals 40 and 42 are connected to the respective extension electrodes. It is arranged in the center of the width direction of the holding portions 206 and 222 . Other configurations are the same as those of the first embodiment.

(tenth resistor)
The tenth resistor 312 has outer edges 212 and 228 that form the outer sides of the adjustment electrodes 202 and 204, and inner edges 214 and 230 that form the inner sides of the adjustment electrodes 202 and 204. It is located near inner edges 214 and 230 of portions 206 and 222 . Other configurations are the same as those of the first embodiment.

(eleventh resistor)
The eleventh resistor 314 has outer edges 212 and 228 that form the outer sides of the adjustment electrodes 202 and 204, and inner edges 214 and 230 that form the inner sides of the adjustment electrodes 202 and 204. It is arranged near the outer edges 212 , 228 of the portions 206 , 222 . Other configurations are the same as those of the first embodiment.

FIG. 20 shows the shape of the resistor 12 when the detection terminals 40 and 42 provided to the adjustment electrodes 202 and 204 are changed in the width direction in the bent adjustment electrodes 202 and 204 having holes of a certain length. FIG. 4 is a diagram showing the relationship between temperature and TCR of a resistor; FIG. 21 shows the temperature and temperature of the resistor 12 when the detection terminals 40 and 42 provided in the adjustment electrodes 202 and 204 are changed in the width direction in the bent adjustment electrodes 202 and 204 having holes with different lengths. FIG. 4 is a diagram showing the relationship of a resistor to TCR;

FIG. 20 shows ninth to eleventh resistors 310 having adjustment electrodes 202 and 204 formed with respective holes 52 and 54 having length dimensions L5 and L6 of 1 mm and width dimensions W1 and W2 of 0.5 mm. At resistor 314, the measured TCR at each temperature is shown. Further, in FIG. 21, in the ninth resistor 310 to the eleventh resistor 314, the width dimensions W1 and W2 of the holes 52 and 54 are 1.0 mm, and the length dimensions L5 and L6 are 1 mm, 5 mm, and 11 mm. , the TCR measured at each temperature is shown. See FIGS. 1 and 2 for the length dimensions L5 and L6 and the width dimensions W1 and W2.

Each of the resistors 310 to 314 extending from each of the extensions 206 and 222 in each of the adjustment electrodes 202 and 204 in a direction in which each of the extensions 208 and 224 is inclined by 45 degrees, the sixth resistor 300 to the eighth resistor Almost the same result as 304 was obtained.

<90 degrees, position of detection terminal and TCR>
The relationship between the positions of the detection terminals 40 and 42 and the TCR of the resistor in which the adjustment electrodes 202 and 204 are bent at 90 degrees will be described.

FIG. 22 is an explanatory diagram showing how the positions of the detection terminals 40, 42 provided on the adjustment electrodes 202, 204 bent at right angles (90 degrees) are changed in the width direction. The holes 52 and 54 formed in the adjustment electrodes 202 and 204 are not illustrated in FIG. 22 because the sizes of the holes 52 and 54 are changed as described later.

A twelfth resistor 320, a thirteenth resistor 322, and a fourteenth resistor 324 are shown in FIG. In each resistor 320-324, each extension 206, 222 and each extension 208, 224 are orthogonal.

(twelfth resistor)
The twelfth resistor 320 has outer edges 212 and 228 that form the outer sides of the adjusting electrodes 202 and 204, and inner edges 214 and 230 that form the inner sides of the adjusting electrodes 202 and 204. It is arranged in the widthwise center of the extensions 206 and 222 . Other configurations are the same as those of the first embodiment.

(13th resistor)
The thirteenth resistor 322 has outer edges 212 and 228 that form the outer sides of the adjusting electrodes 202 and 204, and inner edges 214 and 230 that form the inner sides of the adjusting electrodes 202 and 204. It is located near the inner edges 214, 230 of the portions 206, 222. Other configurations are the same as those of the first embodiment.

(14th resistor)
The fourteenth resistor 324 has outer edges 212 and 228 that form the outer sides of the adjusting electrodes 202 and 204, and inner edges 214 and 230 that form the inner sides of the adjusting electrodes 202 and 204. It is arranged near the outer edges 212 , 228 of the portions 206 , 222 . Other configurations are the same as those of the first embodiment.

FIG. 23 shows the resistor 12 when the detection terminals 40 and 42 provided to the adjustment electrodes 202 and 204 are changed in the width direction in the adjustment electrodes 202 and 204 bent at right angles and having holes of a certain length. is a diagram showing the relationship between the temperature of the resistor and the TCR of the resistor; FIG. 24 shows the resistor 12 when the detection terminals 40 and 42 provided to the adjustment electrodes 202 and 204 are changed in the width direction in the adjustment electrodes 202 and 204 bent at right angles and having holes of different lengths. is a diagram showing the relationship between the temperature of the resistor and the TCR of the resistor;

FIG. 23 shows 12th to 10th resistors 320 having adjustment electrodes 202 and 204 formed with respective holes 52 and 54 having length dimensions L5 and L6 of 1 mm and width dimensions W1 and W2 of 0.5 mm. At four resistors 324, the TCR measured at each temperature is shown. 24, in the 12th resistor 320 to the 14th resistor 324, the width dimensions W1 and W2 of the holes 52 and 54 are 1.0 mm, and the length dimensions L5 and L6 are 1 mm, 5 mm, and 5 mm. The TCR measured at each temperature is shown for the case of 11 mm. See FIGS. 1 and 2 for the length dimensions L5 and L6 and the width dimensions W1 and W2.

In each resistor 320 - 324 , the current flowing through each resistor 320 - 324 tends to flow toward the inner edges 214 , 230 . Therefore, the potential distribution in each of the adjustment electrodes 202 and 204 decreases from the inner edges 214 and 230 toward the outer edges 212 and 228 .

Therefore, the thirteenth resistor 322 with the detection terminals 40 and 42 arranged near the inner edges 214 and 230 exhibits a large TCR value compared to the other resistors, and the detection terminals 40 and 42 It has been found that the TCR decreases as the position approaches the outer edges 212 and 228 .

By arranging the holes 52 and 54 closer to the outer edges 212 and 228 than to the inner edges 214 and 230, the TCR variation effect can be enhanced and the TCR can be reduced. In this way, in resistors in which the extending portions 206, 222 and the extending portions 208, 224 are perpendicular to each other, the detection terminals 40, 42 and the holes 52, 54 are arranged near the outer edges 212, 228. By doing so, the TCR can be greatly varied. Thereby, the TCR adjustment range can be widened.

Therefore, by providing the curved portions 210 and 226 to the adjustment electrodes 202 and 204 to control the current path, it is possible to further improve the characteristics of the resistor, and the positions of the detection terminals 40 and 42 and the holes 52 and 54 can be improved. By adjusting , highly accurate detection becomes possible.

Although the embodiments of the present invention have been described above, the above embodiments merely show a part of application examples of the present invention, and the technical scope of the present invention is not limited to the specific configurations of the above embodiments. do not have.

Reference Signs List 10, 200 resistor 12 resistor 12A one end 12B other end 14 first electrode 16 second electrode 22 one surface 24, 202 first adjustment electrode 26, 204 second adjustment electrode 32 first overlapping portion 36 second overlapping portion 40 First detection terminal 42 Second detection terminal 46 First conducting part 50 Second conducting part 52 First hole 54 Second hole 206 First extension part 208 First extension part 210 First curved part 222 Second extension part 224 second extending portion 226 second curved portion T1, T2, T3, T4 thickness dimension T1

Claims (9)

a resistor;
an electrode connected to the end of the resistor;
an adjustment electrode arranged in contact with the electrode;
with
the adjustment electrode has an overlapping portion extending over and in contact with the resistor;
Resistor. A resistor according to claim 1,
The area where the overlapping portion overlaps one surface of the resistor is 70% or less of the area of the one surface of the resistor,
Resistor. A resistor according to claim 1 or claim 2,
The thickness dimension of the adjustment electrode is equal to or greater than the thickness dimension of the electrode.
Resistor. A resistor according to any one of claims 1 to 3,
The adjustment electrode has a protruding detection terminal,
Resistor. A resistor according to claim 4,
The detection terminal is arranged in the overlapping portion,
Resistor. A resistor according to claim 4 or claim 5,
The adjustment electrode has a current-carrying portion on the side opposite to the overlapping portion,
A hole is formed in the adjustment electrode in a direction closer to the conducting part than the detection terminal,
Resistor. A resistor according to claim 6,
at least a portion of the hole is located in the overlapping portion;
Resistor. A resistor according to any one of claims 4 to 7,
The adjustment electrode has an extension portion extending along the electrode in the direction in which the resistor and the electrodes are arranged, and an extension portion extending from the extension portion in a direction intersecting the arrangement direction. death,
The adjustment electrode has a curved portion between the detection terminal provided on the extension portion and an energizing portion set on the extension portion,
Resistor. A resistor according to claim 6 or claim 7,
The adjustment electrode has an extension portion extending along the electrode in the direction in which the resistor and the electrodes are arranged, and an extension portion extending from the extension portion in a direction intersecting the arrangement direction. death,
The adjusting electrode has a curved portion between the hole provided in the extending portion and the conducting portion set in the extending portion,
Resistor.

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