SM-3TA202

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Trimmer Potentiometers are commonly used in electrical circuits as an adjustable voltage divider. They are available in a variety of sizes and styles, such as through-hole disk, surface-mount chip, and surface-mount pad. Each type has its own set of advantages and disadvantages when it comes to mounting and operation. In this article we\'ll be focusing on the SM-3TA202, a trim pot of the through-hole disk type. We\'ll discuss its application field and the working principle behind it.

Application Field

The SM-3TA202 is a precision trim pot, designed for use as a voltage divider in control circuits. It is commonly embedded in circuits where the output voltage must be adjusted manually, such as in power supplies or audio amplifiers. It is a particularly good choice for those applications where greater accuracy is required.

The SM-3TA202 is an off-the-shelf part, meaning that it can be quickly and easily incorporated into designs. As a result, it is well-suited for a wide range of applications, including analog signal conditioning, technical instrumentation, and communications systems. Further, its 10-turn adjustment range makes it an excellent option for finely-tuned control.

Working Principle

The SM-3TA202 works by varying the resistance between its two terminals using a shaft-mounted potentiometer. This potentiometer is connected to a variable resistor, which is connected in series with a fixed resistor. The value of the variable resistor is adjustable with the shaft, allowing the total resistance and output voltage of the circuit to be regulated.

The potentiometer works in a linear function, meaning that the resistance between the two terminals is proportional to the rotation of the shaft. As the shaft is turned, the resistance of the potentiometer changes from minimum to maximum, and the output voltage of the circuit changes along with it. This allows different output voltages to be achieved, depending on the position of the shaft.

In addition to its adjustable nature, the SM-3TA202 also has several other features that make it attractive for design engineers. It is RoHS Compliant, has an extremely robust design, and is capable of operating at temperatures up to 125°C. This makes it ideal for demanding applications that require greater temperature tolerance.

Conclusion

The SM-3TA202 is a precision trim pot, designed for use in control circuits. It is available as a through-hole disk-style potentiometer, and is an excellent choice for those applications where greater accuracy is required. Its 10-turn adjustment range makes it ideal for finely-tuned control, and it is robust enough to withstand high temperatures. All things considered, the SM-3TA202 is a reliable and cost-effective way to adjust the output voltage of a circuit.

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