ST7TA103

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Trimmer Potentiometers

Trimmer potentiometers are fixed electrical resistors with a sliding contact, typically known as a wiper, which is used to adjust the resistance in the circuit. They are also known as trimmer resistors, trimpots, or variable resistors. ST7TA103 is a trimmer potentiometer with a wide application field and working principle.

Application Field

ST7TA103 trimmer potentiometers are typically used to effectively control and adjust the voltage or current delivered from a power supply and are widely used in the production stages of varied electronic devices. Typical applications include circuit stability adjustment, measuring instruments and automatic control circuits, audio frequency amplifying circuits, and resistance track adjusting products.

They are also one of the most commonly used electrical components to adjust the sound level of audio equipment. Besides, ST7TA103 trimmer potentiometers can also be used as the adjustment of electronic digital components for the computer, such as the fan speed controller, computer case light controller, or the adjustment of the microprocessor voltage.

Working Principle

A trimmer potentiometer consists of three electrode terminals, namely the wiper (or sliding contact), the start terminal, and the terminal. There is a resistive element in between the sliding contact and other two terminals which is coated with a conductive material. When the sliding contact is in contact with the other two terminals, the potentiometer will be at a certain resistance. The resistance can be adjusted by slightly moving the sliding contact to position it at the point of equal voltage.

When the ST7TA103 trimmer potentiometer is used, the two terminals are connected to the power supply. Moving the sliding contact can control the output voltage of the power. The output voltage of the power is active between the value of the two other terminals. To get the exact voltage, the sliding contact will need to be adjusted along the resistive element until it reaches the correct voltage.

A trimmer potentiometer is typically made out of ceramics, plastic, and other materials which will not react with other electronic components. As the ST7TA103 trimmer potentiometer only has three terminals, it can be installed and be used more quickly and easily. It provides a low power consumption, reproducibility, and very good stability compared to the other two and three terminal fixed resistors.

Conclusion

The ST7TA103 trimmer potentiometer is a great adjuster for different voltages as it uses just three terminals and is highly stable and accurate. It is also low-maintenance, user-friendly in terms of operation and adjustable in a short period of time. It is widely applied in many types of electronic equipment and electronic components for adjustment. Compared to other fixed resistors, trimmer potentiometers have higher efficiency and durability, and are more advantageous.

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