Resistor having low temperature coefficient of resistance

Patent metadata

Field	Value
Publication number	US-2020200799-A1
Application number	US-201916708349-A
Country	US
Kind code	A1
Filing date	Dec 9, 2019
Priority date	Dec 21, 2018
Publication date	Jun 25, 2020
Grant date	—

Abstract

A resistor having low temperature coefficient of resistance includes a resistive part and two conductive parts connected to opposite sides of the resistive part. One conductive part has a through slot and a sensing portion between the through slot and the resistive part. The through slot has two inter-connected sections. Each section extends and ends with a closed end and has a parallel component, parallel to a main current direction defined on the resistor, and a perpendicular component, perpendicular to the main current direction. Another resistor having low temperature coefficient of resistance includes a resistive part and two conductive parts connected to two sides of the resistive part respectively. Each conductive part has a protrusion block, extending outward perpendicular to a main current direction defined on the resistor, and a sensing portion at the protrusion block.

First claim

What is claimed is:

1 . A resistor having low temperature coefficient of resistance, the resistor thereon defining a main current direction, the resistor comprising:
a resistive part; a first conductive part, connected to a side of the resistive part in the main current direction, the first conductive part having a first sensing portion and a first through slot, the first sensing portion being located between the first through slot and the resistive part, the first through slot comprising a first slot section and a second slot section which are located at two opposite sides of the first sensing portion relative to the main current direction and connected with each other, the first slot section extending from a first start point along a first path toward the resistive part and ending with a closed end, the second slot section extending from the first start point along a second path toward the resistive part and ending with a closed end, the first path having a first parallel component, parallel to the main current direction, and a first perpendicular component, perpendicular to the main current direction, the second path having a second parallel component, parallel to the main current direction, and a second perpendicular component, perpendicular to the main current direction; and a second conductive part, connected to another side of the resistive part in the main current direction, the second conductive part having a second sensing portion.

2 . The resistor according to claim 1 , wherein the first slot section and the second slot section are symmetrical relative to the main current direction or the first sensing portion.

3 . The resistor according to claim 1 , wherein the first through slot has a projection length in a direction perpendicular to the main current direction, the first conductive part has a width in the direction perpendicular to the main current direction, and the projection length is less than a half of the width.

4 . The resistor according to claim 1 , wherein the first through slot is provided in form of a C-shape, a square bracket, rectangular bracket, or an angle bracket.

5 . The resistor according to claim 1 , wherein the first slot section is provided in form of an arc, an L-shape, or a straight line.

6 . The resistor according to claim 1 , wherein the first conductive part has a connecting hole and an extension through slot, and the extension through slot connects the first through slot and the connecting hole.

7 . The resistor according to claim 1 , wherein the first conductive has a first connecting portion, and the first through slot is located between the first connecting portion and the first sensing portion along the main current direction.

8 . The resistor according to claim 1 , wherein the first conductive part has a second through slot, and the second sensing portion is located between the second through slot and the resistive part.

9 . The resistor according to claim 8 , wherein the second through slot comprises a third slot section and a fourth slot section which are located at two opposite sides of the second sensing portion relative to the main current direction and connected with each other, the third slot section extends from a second start point along a third path toward the resistive part and ends with a closed end, the fourth slot section extends from the second start point along a fourth path toward the resistive part and ends with a closed end, the third path has a third parallel component, parallel to the main current direction, and a third perpendicular component, perpendicular to the main current direction, and the fourth path has a fourth parallel component, parallel to the main current direction, and a fourth perpendicular component, perpendicular to the main current direction.

10 . The resistor according to claim 9 , wherein the third slot section and the fourth slot section are symmetrical relative to the main current direction or the second sensing portion.

11 . The resistor according to claim 8 , wherein the first through slot and the second through slot are symmetrical relative to the resistive part.

12 . The resistor according to claim 8 , wherein the first conductive has a first connecting portion, the second conductive has a second connecting portion, and the first connecting portion, the first through slot, the first sensing portion, the resistive part, the second sensing portion, the second through slot, and the second connecting portion are arranged in order in the main current direction.

13 . The resistor according to claim 1 , wherein the resistive part has an indentation, and the indentation has a depth selected to adjust a resistance of the resistor.

14 . A resistor having low temperature coefficient of resistance, the resistor thereon defining a main current direction, the resistor comprising:
a resistive part; a first conductive part, connected to a side of the resistive part in the main current direction, the first conductive part having a first protrusion block extending outward perpendicular to the main current direction and ending with an end perpendicular to the main current direction, the first conductive part having a first sensing portion at the first protrusion block; and a second conductive part, connected to another side of the resistive part in the main current direction, the second conductive part having a second sensing portion, the first sensing portion and the second sensing portion being disposed at two sides of the resistive part respectively.

15 . The resistor according to claim 14 , wherein the first conductive part has a straight edge, and the straight edge extends parallel to the main current direction and adjoins an edge of the first protrusion block.

16 . The resistor according to claim 14 , wherein the first conductive part has a slanted edge, and the slanted edge extends obliquely relative to the main current direction and adjoins an edge of the first protrusion block.

17 . The resistor according to claim 14 , wherein the first conductive part has a curved edge, and the curved edge extends obliquely relative to the main current direction and adjoins an edge of the first protrusion block.

18 . The resistor according to claim 14 , wherein the resistive part has a portion located on a reference line segment from the first sensing portion to the second sensing portion.

19 . The resistor according to claim 18 , wherein the second conductive part has a second protrusion block extending outward perpendicular to the main current direction and ending with an end perpendicular to the main current direction, the second sensing portion is at the second protrusion block, the first protrusion block and the second protrusion block are disposed at the two sides of the resistive part respectively, edges of the resistive part, and the first protrusion block, and the second protrusion block are aligned.

20 . The resistor according to claim 14 , wherein the resistive part has an indentation at a side of the resistive part opposite to the first protrusion block relative to the main current direction, and the indentation has a depth selected to adjust a resistance of the resistor.

Assignees

• Cyntec Co Ltd

Inventors

• Hung Tzu-Hao
• Luo Ying-Da

Classifications

• G01R15/18

  using inductive devices, e.g. transformers · CPC title

• H01C3/00 Primary

  Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids · CPC title

• G01R1/203 Primary

  Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts (resistors in general H01C; microwave or radiowave terminations H01P1/26; coupling devices H01R) · CPC title

• H01C1/14

  Terminals or tapping points specially adapted for resistors; Arrangements of terminals or tapping points on resistors · CPC title

• H01C1/148

  the terminals embracing or surrounding the resistive element (H01C1/142 takes precedence) · CPC title