Trimmer Potentiometers

Trimmer potentiometers are a type of variable resistors used to adjust and calibrate circuits, typically in an electronic system. They are used to adjust gain, level, frequency, or other parameters in electronic circuits, and are often used in automated test equipment, television and radio receivers, timing circuits, and many other applications. The ST42ETA104 is a trimmer potentiometer that meets international safety standards and offers a wide range of features including adjustable (span) resistance range, temperature stability, and low noise.

Application Field

The ST42ETA104 trimmer potentiometer is suitable for a wide range of applications, such as industrial electronic equipment, medical equipment, analysis and measurement equipment, and automotive electronics. It is a cost-effective solution for precise, adjustable resistors.

In industrial equipment, it is used to adjust and calibrate gain, level, frequency, or other parameters important for accurate and efficient operation. In medical equipment, it is often used to adjust the level of a specific parameter such as an osmotic pressure or readings from a device such as an X-ray or magnetic resonance imaging (MRI) system. In analysed and measurement equipment, it can be used to adjust and calibrate sensors, amplifiers, and other instruments used in the gathering and processing of data. In automotive electronics, it is commonly used to adjust timing, fuel injection, and other parameters in engine control systems.

Working Principle

The ST42ETA104 trimmer potentiometer is a mechanical device with a potentiometer attached to it. The potentiometer allows for precise, adjustable resistance levels. The resistance can be adjusted by turning the knob or adjusting the variable resistor, and the adjustment is then locked in place with a set screw. The potentiometer and the trimmer are connected to each other through a movable contact that enables the adjustments as the knob is turned.

The resistance value of the ST42ETA104 trimmer potentiometer can be adjusted accurately up to 0.25ohms and temperature stability up to 20ppm/°C. This stability ensures that the adjusting range is always in the desired range. The potentiometer’s low noise makes it ideal for applications where noise is a problem, such as TV or radio applications.

Conclusion

The ST42ETA104 trimmer potentiometer is an ideal choice for a wide range of applications, with features such as adjustable (span) resistance range, temperature stability, and low noise. It is suitable for industrial electronic equipment, medical equipment, analysis and measurement equipment, and automotive electronics.