SM-42A101

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Trimmer Potentiometers: SM-42A101 Application Field and Working Principle

Trimmer potentiometers or trimpots are widely used in various applications ranging from being incorporated in circuit board designs to being used as stand-alone components. The SM-42A101 trimpot series from NHJ Corporation is a popular choice amongst many designers, engineers and hobbyists. In this article, we will discuss the application fields as well as the working principles of the SM-42A101 trimpot.

Application Fields of SM-42A101 Trimpot

The SM-42A101 series trimpots are specified and designed for general-purpose applications. They are mainly used in consumer electronics, automotive electronics, medical electronics, and industrial equipment. In these application fields, the SM-42A101 performs quite well in terms of repeatability, accuracy, and stability.

In consumer electronics, the SM-42A101 trimpots are extensively used in audio-visual products and appliances such as TVs, radios, and VCRs. The trimpots are used to tune sound, volume, and image output as well as other settings. The SM-42A101 is also used in automotive electronics such as car audio systems and engine fuel injection systems. The trimpot is an important component for adjusting the signal to the various modules in a car. In medical electronics and industrial equipment, the trimpot is used to adjust temperatures, air flow, and other settings.

Working Principle of SM-42A101 Trimpot

SM-42A101 trimpots are single-turn potentiometers. A variable resistor is formed when a wiper plate which is connected to a spindle moves along resistive elements. The middle spindle is used to adjust the output of the trimpot. The current that goes through the resistance can be adjusted by changing the position of the wiper plate. The resistive elements inside the trimpot are made of either conductive plastic or cermet material. The SM-42A101 series trimpots has a maximum power rating of 2W with a resistance range of 2KΩ to 100KΩ.

The SM-42A101 trimpots are very durable and guarantee excellent repeatability even after multiple adjustments. The inner parts are made of stainless steel which provides corrosion protection. The trimpots are resistant to dust, oil, and chemicals, which provides a long service life to the users. The SM-42A101 trimpots have a resistance tolerance of ± 10% and ± 20% which ensures accurate and stable operations.

Conclusion

The SM-42A101 trimpot series from NHJ Corporation is suitable for many different applications and is recognized for its outstanding performance. With its resistance tolerance, repeatability, accuracy, and stability, the trimpot is an ideal choice for designers, engineers, and hobbyists alike. With its corrosion-resistant materials and dust-, oil- and chemical-resistant structure, the SM-42A101 trimpot will ensure long-term service for its users in different electronic application fields.

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