How to wire and use the dial potentiometer

Dial potentiometer is also a commonly used potentiometer in the tuning function market. Soundwell Electronics also has many models of dial potentiometers for customers to use on the circuit. Today, let’s introduce the knowledge of dial potentiometers, including pulling Disc potentiometer wiring method, precautions for the use of the disc potentiometer, how to clean the dust and debris of the disc potentiometer, and so on Common sense of the device.

Wiring method of pull-out potentiometer

The first pin of the dial potentiometer from the left is the common terminal, the 2 and 3 pins are the left and right dual-channel output, and the 4 and 5 are the left and right dual-channel inputs. The left channel is connected to the left channel with a wire, and the right channel is connected to the right channel with a wire. The grounding terminal can be temporarily ignored. The dial potentiometer has three points: line input, line output, and ground terminal. As for which output corresponds to the input, it depends on the metal contact piece on the plastic knob. Generally, the PCB board signal goes from left to right, the first hole is grounding, the second hole is the left channel output, the third hole is the right channel output, the fourth is the left input, and the fifth is the right channel input. Connect the second hole with the fourth hole with a wire, and connect the third hole with the fifth hole.

Precautions for the use of the potentiometer

1. The potentiometer has been in use for a long time, and some dust and debris on the shaft of the lower potentiometer should be cleaned regularly. If it is not cleaned, the accumulated dust will affect the output between the lines, and there may be a problem in the adjustment. There are phenomena such as failure.

2. For the internal open circuit of the potentiometer pin or burnout of the resistor body, etc., this type of failure is generally inconvenient to repair, and it is recommended to replace the component.

3. On the wiring of the pull-out potentiometer, each line cannot be connected wrongly. If there is a wrong connection, the output between the lines may be incompatible with each other, which may damage the potentiometer. So pay great attention to the wiring.

How to clean the dust and debris of the potentiometer

1. First use a screwdriver to carefully open the fixing slot of the pull-out potentiometer cover, and then remove the potentiometer.

2. Then pull the fixed shaft of the dial potentiometer out of the shaft. Some dial potentiometers cannot take out the shaft. At this time, some dust and debris on the potentiometer shaft can be directly cleaned on the potentiometer with a cotton ball dipped in pure alcohol Of the shaft.

3. After the cleaning is completed, you can apply some lubricating oil or special grease on the rotating shaft, which can delay the service life of the potentiometer.

4. Finally, reinstall and fix the dial potentiometer.