Potentiometer, calibration method and calibration system of potentiometer as well as volume control device and electronic equipment

A technology of electronic equipment and potentiometers, applied in the field of electronics, can solve the problems of residual resistance, inaccurate output volume, etc.

Active Publication Date: 2015-10-07
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But after the potentiometer has been used for a period of time, when the contact wiper is rotated to minimize the resistance value of the resistor between pin 1 and pin 3, the resistance value of the resistor between pin 1 and pin 3 should be It is 0 ohm, but due to the wear of the movable arm and the contact brush (the ...

Method used

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  • Potentiometer, calibration method and calibration system of potentiometer as well as volume control device and electronic equipment
  • Potentiometer, calibration method and calibration system of potentiometer as well as volume control device and electronic equipment
  • Potentiometer, calibration method and calibration system of potentiometer as well as volume control device and electronic equipment

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0029] see figure 2 Shown is a schematic structural diagram of a potentiometer embodiment of the present invention. like figure 2 As shown, the potentiometer of this embodiment includes a resistor body Rp, a first pin Pin1, a second pin Pin2, a third pin Pin3, a fourth pin Pin4, a switch S, a protection resistor R0 and a movable brush Rz;

[0030] The first pin Pin1 is connected to the brush Rz, the second pin Pin2 is connected to one end of the resistor body Rp, the third pin Pin3 is connected to the other end of the resistor body Rp, and one end of the protection ...

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Abstract

The invention relates to a potentiometer, a calibration method and a calibration system of the potentiometer as well as a volume control device and electronic equipment. The potentiometer comprises a resistor body, a first pin, a second pin, a third pin, a fourth pin, a switch, a protective resistor and a movable electric brush, wherein the first pin is connected to the electric brush; the second pin is connected to one end of the resistor body; the third pin is connected to the other end of the resistor body; one end of the protective resistor is connected to the second pin; the other end of the protective resistor is respectively connected to one end of the switch and the fourth pin; the other end of the switch is connected to the third pin. Through the potentiometer, the influence of the residue resistance can be eliminated; when the potentiometer is applied to the volume control of the electronic equipment, the output volume is relatively more accurate.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a potentiometer, a potentiometer calibration method and system, a volume control device including the potentiometer, and electronic equipment including the volume control device. Background technique [0002] Potentiometer is an important electronic device widely used in electronic products. In the audio field, it is often used to control the output volume of electronic products. [0003] like figure 1 As shown, the current single potentiometer generally includes a movable arm, a contact brush, a resistor body and 3 pins, and the position of the contact brush can be changed by rotating the contact brush, thereby changing the figure 1 The size of the output voltage shown serves the purpose of adjusting the output volume of the electronic product. Multi-connected potentiometers usually have 3*n pins (n ​​represents the number of potentiometers). For example, a double...

Claims

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Application Information

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IPC IPC(8): H01C10/32H01C10/48H01C10/36H01C17/235
Inventor 刘绍斌
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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