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Carbon film potentiometer

A carbon film potentiometer and carbon film technology, applied in the field of potentiometers, can solve the problems of carbon film dampness, reduce service life, affect performance and other problems, and achieve the effect of avoiding carbon film moisture regain and improving service life.

Inactive Publication Date: 2018-04-13
邓岚
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] The carbon film potentiometer is made by coating a layer of carbon film on the horseshoe-shaped paper plastic board. There are three types of relationship between the resistance value change and the position of the middle contact: linear, logarithmic and exponential. The carbon film potentiometer has There are several types of large, small, and micro, and some of them form potentiometers with switches together with switches. Carbon film potentiometers are characterized by high resolution, good wear resistance, and long life, but ordinary carbon film potentiometers have the following disadvantages : The carbon membrane on the carbon membrane is easy to absorb water vapor in the air, so the carbon membrane is wet, which affects the performance and reduces the service life

Method used

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  • Carbon film potentiometer

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Embodiment Construction

[0012] The invention will be further described below with reference to the accompanying drawings and in combination with specific embodiments, so that those skilled in the art can implement it by referring to the description, and the protection scope of the present invention is not limited to the specific embodiments.

[0013] The invention relates to a carbon film potentiometer, which comprises a base 1 and a carbon diaphragm 2 laid flat on one surface of the base 1 , and a desiccant coating 3 is arranged between the base 1 and the carbon diaphragm 2 .

[0014] Preferably, the desiccant coating 3 covers an area at least equal to the surface area of ​​the carbon membrane 2 .

[0015] As a priority, the carbon diaphragm 2 of the carbon film potentiometer includes an outer arc segment 4 and a desiccant strip 5 covering the outer arc segment 4 .

[0016] As a priority, the carbon film potentiometer also includes fixed contacts 6 respectively arranged at both ends of the base 1, a...

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Abstract

The invention relates to a carbon film potentiometer. The carbon film potentiometer comprises a substrate and a carbon film sheet tiled on one surface of the substrate; and a drying agent coating layer is arranged between the substrate and the carbon film sheet. The drying agent coating layer can adsorb water content in the film sheet in real time, so that a carbon film moisture regain phenomenoncaused by long-time exposure can be avoided, and the service life of the carbon film potentiometer is prolonged.

Description

technical field [0001] The invention relates to the technical field of potentiometers, in particular to a carbon film potentiometer. Background technique [0002] The carbon film potentiometer is made by coating a layer of carbon film on the horseshoe-shaped paper plastic board. There are three types of relationship between the resistance value change and the position of the middle contact: linear, logarithmic and exponential. The carbon film potentiometer has There are several types of large, small, and micro, and some of them form potentiometers with switches together with switches. Carbon film potentiometers are characterized by high resolution, good wear resistance, and long life, but ordinary carbon film potentiometers have the following disadvantages : The carbon membrane on the carbon membrane device is easy to absorb water vapor in the air, so that the carbon membrane is wet, which affects the performance and reduces the service life. Contents of the invention [...

Claims

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Application Information

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IPC IPC(8): H01C10/34
CPCH01C10/34
Inventor 邓岚
Owner 邓岚
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