ST42EG102

ST42EG102 is a rotary type trimmer potentiometer, a three pin device product with angle adjustment range from 170 to 190 degrees and turning range of over 270 degrees. It is used for adjustment of the values of resistance in most of instrument and device applications such as consumer electronic products, computer peripheral devices, such as mouse, keyboard, etc.The working principle of ST42EG102 is that its resistance value is adjusted range within a certain range by rotating the shaft, which is completed by its built-in metal track and contact, operating on a mechanical principle. The inner structure of the trimmer is similar to the adjustable resistor, but there is a difference, the outer shell of the adjustable resistor is to adjust the resistance value by changing the number of turns of the inner windings, while the trimmer potentiometer is adjusted by changing the angle of the contact of the inner track And the contact of the transition section.When the finger pushes the screw head or turns the rotating shaft, the contact of the linear graphite portion will rotate relatively with the rotation of the shaft. At this time, the electrical contact point of the graphite and track will keep slipping, resulting in a change in the overall resistance of the resistor. The resistance value of the resistor changes with the increase of the angle to the maximum. The angle of the contact of the inner track and the contact of the transition section is the angle adjustment range of the ST42EG102, which is 170 degrees to 190 degrees.The adjustable range of ST42EG102 can be increased through the design of the inner track and the contact part. It can also increase the mechanical accuracy of the adjustment through the selection of materials and the design of the non-contact sliding joint at the contact.ST42EG102 trimmer potentiometer is widely used in electronic equipment, precision instruments, computer peripheral products, electronic products and other related fields. It has the advantages of stable performance, low noise, high precision adjustment, strong vibration resistance and so on. In addition, the resistance value is stable, the adjustment is precise, and the linearity is good.ST42EG102 is a trimmer potentiometer that functions as a resistor, adjusting the value of resistance within a certain range. It is widely used in many areas with its advantages of stable performance, low noise and high precision.