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How to install the potentiometer? 1. When the potentiometer is installed on the panel with nuts, be very careful when locking the nuts. The locking torque should not be too tight to avoid damaging the screw teeth. 2. When installing the direct-slip potentiometer with screws, avoid using too long screws, otherwise it may hinder the movement of the sliding handle, or even directly damage the potentiometer itself. 3. During welding or installation, do not exert excessive pressure on the terminal, otherwise it may cause poor contact or mechanical damage. Try to avoid bending the terminal back and forth. The terminal may break due to bending for more than two weeks. 4. When putting the knob on the potentiometer, do not exert excessive axial push/pull on the shaft. The push/pull force shall not exceed the axial push/pull parameter index specified in the Product Specification. When installing the potentiometer, in order to keep the performance unchanged, be sure to understand the precautions for installing the potentiometer 1. Heat dissipation problem During the use of carbon film potentiometer, the heat from the resistor will cause the temperature rise of the potentiometer itself. Heat must be dissipated by convection, conduction, radiation and other means, and conduction through the casing or bottom plate is a very important way of heat dissipation. If the potentiometer is not installed properly, the heat dissipation will be affected. The potentiometer may even be damaged due to high temperature. Especially those potentiometers with high power consumption, as well as the miniaturization and energy shaping of electronic equipment and instruments, which bring serious internal temperature, should pay more attention to heat dissipation. It is often installed on the metal base plate with good thermal conductivity to ensure good heat dissipation conditions. At the same time, it is also necessary to consider the distribution of other heating elements and devices near the potentiometer. When necessary, ventilation and cooling conditions should be carefully considered to ensure the safe use of the potentiometer 2. Installation fixing problem When installing the potentiometer, the fixing nut or the locking nut of the locking potentiometer cannot be tightened too tightly, otherwise the rotating shaft will be deformed and the rotation will be uneven. In this way, the torque will change abnormally. For locking potentiometers, special attention should be paid if the locking torque is lower than the standard. The locking torque depends on the thickness of the rotator sleeve diameter and the material used. Generally speaking, aluminum shaft is the worst, and cast shaft, brass shaft and steel shaft are hardened in turn. In addition, after the nut is locked, the rotating shaft is about 1mm higher than the nut surface. 3. Welding of leading-out end and circuit Due to the short soldering lug or lead wire at the lead end of the potentiometer, it is necessary to pay attention to the heating temperature and the time delay when welding in the miniaturized printed circuit board or hybrid integrated circuit (the temperature is 350. C, the time is 35270. C, the time is 5s). Otherwise. The radiation heat, solder spatter, PCB bending or substrate deformation caused by solder baking may all be the reasons for the failure of carbon film potentiometers. If the wiring is wrong, you should be more careful when removing the wire, especially when wiping the wire from the printed circuit board or the hybrid integrated circuit substrate. In addition, during welding, the flux should be used as little as possible, and the flux should not be immersed in the potentiometer, otherwise, poor contact will be caused. In the process of welding the circuit, the phenomenon of solder penetration should be strictly avoided between the leading-out ends or between the leading-out end and the metal outer jacket, the bottom plate and other conductor gaps. After welding, a strict cleaning process should be carried out How to install the potentiometer 1. Before welding, the solder joint shall be tinned to remove the paint and dirt on the solder joint. 2. When welding or installing the potentiometer, make the mark easy to observe. 3. The adjustable potentiometer shall be installed at a place convenient for adjustment. 4. When installing high-power potentiometers, heat dissipation should be considered, especially to make full use of radiation heat dissipation. 5. Small power potentiometers should use conduction heat dissipation and convection heat dissipation. Although the heat conduction of the lead wire of the low-power potentiometer is of decisive significance, the lead wire of the potentiometer installed on the printed circuit board is better to be shorter, so that the bottom plate can be used for heat dissipation. 6. When installing the potentiometer, use fastening parts to fix it firmly to avoid loosening the potentiometer and colliding with other components in the circuit. For example, the end face of some potentiometers is equipped with a positioning column to prevent the shell from rotating. During installation, pay attention to check whether the positioning column is correctly installed in the positioning hole on the installation panel to avoid the shell deformation. For the rectangular fine-tuning potentiometer fixed with screws, the screws shall not be pressed too tightly to avoid damaging the internal structure of the potentiometer. 7. The knob installed on the shaft end of the potentiometer should not be too large, and should match the size of the potentiometer to avoid damaging the stop inside the potentiometer due to excessive adjustment of the rotating torque. 8. For the potentiometer of pin type lead, in order to prevent the lead from breaking, do not bend or twist the lead with force. 9. When installing the potentiometer into the circuit, pay attention to the correct connection of the three pins. 10. The welding time shall be appropriate, and the heating shall not be too long to avoid softening and deformation of the shell around the lead.