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Potentiometer

A potentiometer and electrical connection technology, applied in the field of potentiometers, can solve the problems of expensive potentiometers, inflexibility, and expensive methods.

Inactive Publication Date: 2007-11-21
ABB PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The hitherto known methods are very expensive and inflexible due to the need for laser adjustment
Potentiometers of this type known to have high precision are relatively expensive

Method used

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Examples

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Embodiment Construction

[0039] FIG. 1 shows a potentiometer 1 with a first potentiometer connection 15 , a second potentiometer connection 18 and a third potentiometer connection 21 . Arranged on the underside of the carrier plate 6 is an array 4 of resistive elements 30 in the form of a series circuit. The resistance element 30 is designed as an SMD component. They each carry a connecting piece 31 made of solder material at the ends of the cuboidal resistor body.

[0040]Electrically conductive leads lead from the connecting piece 31 of each resistor element 30 to the opposite side of the carrier plate 6 . There, the conductive leads of two adjacent resistance elements are electrically connected in electrical connection points 42 . The conductive leads thus form means for electrically connecting the components of the resistor array 3 with the sliding contacts within the adjustment range of the tap 27 . In this way, a series circuit of the resistor circuit 3 is produced between the first free end ...

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Abstract

Electric potentiometer (1) is provided with carrier plate (6) with resistance circuit (3) wherein the free ends (9,12) of the resistance circuit (3) are connected with joint (15,18) of a first and a second electric potentiometer, and a tapping end (27) with a gliding contact (24), wherein the tapping end is connected with the joint (21) of a third electric potentiometer. The resistance circuit (3) is composed of discrete array (4) of resistance part (30) with preset resistance value by electrical connection. In addition, using an existence device (36), the gliding contact (24) is electrically connected with a preset area of the resistance array (4) along its moving track (B) in the adjusting area of the tapping end.

Description

technical field [0001] The invention relates to a potentiometer according to the preamble of claim 1 . A potentiometer of this type has three potentiometer contacts and a carrier board carrying the resistor circuit. Free ends of the resistor circuit are connected to the first and second potentiometer connections. Furthermore, a potentiometer of this type has a tap which carries a sliding contact and which is connected to a third potentiometer terminal. Background technique [0002] Such potentiometers are known in principle from the prior art as adjustable resistors. Its basic structure and methods of application are described, for example, in the textbook "Ekbert Hering, Klaus Bressler, Elektronik für Ingenieure, VDI Verlag Düsseldorf, 1992, Chapter 2.2.4". [0003] In order to produce a potentiometer of this type, the carrier is coated with one or more resistive substances according to hitherto known methods. The resistive substance forms a continuous resistive coating...

Claims

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Application Information

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IPC IPC(8): H01C10/16H01C10/32H01C1/12
CPCH01C10/48
Inventor R·-R·D·易S·-G·Q·王J·-Z·Y·姜G·尼沃纳
Owner ABB PATENT GMBH
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