3057L-1-201M Potentiometers, Variable Resistors

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Trimmer Potentiometers

Trimmer potentiometers are small and versatile devices that are used to provide precise, adjustable electrical resistance. They come in various shapes and sizes, but all contain a slider, knob or screw which, when adjusted, modifies the resistance of the device. The type of trimmer potentiometer most commonly used is the single-turn type, which has a single, continuous path of travel for the slider/knob.

3057L-1-201M Application Field and Working Principle

The 3057L-1-201M trimmer pot is a miniature, single-turn potentiometer designed and manufactured by Bourns. It features a rugged design and is typically used in projects where space requirements are limited and where a precision adjustment is needed. The device is designed for use in circuits with analog systems and is mainly used as a voltage and/or current divider.

The 3057L-1-201M trimmer pot has a maximum resistance of 201 ohms and a single turn of travel of approximately 300 degrees. The slider/knob has a footprint of just 0.2-inch square and is available with six mounting styles; panel, thumbwheel, friction fit, dovetail, surface mount and through-hole.

The working principle of the pot is fairly simple. As the slider/knob is adjusted, the resistance changes accordingly, with the resistance at its highest when the knob is turned all the way in one direction and its lowest when turned in the other. As the knob is turned, it creates a voltage divider circuit, with the voltage being divided between the two resistive elements in accordance with their respective resistances. This arrangement is often used to adjust the voltage/current for a variety of different applications.

The 3057L-1-201M is manufactured using a conductive plastic element, which is consumed as the slider is turned, leading to a relatively short operating life when compared to other types of potentiometers. The device also features a spring-loaded bushing which reduces the amount of wear on the slider/knob and prevents it from binding when adjusted. It also offers high mechanical stability as well as accurate repeatability when turning the knob.

These miniature trimmers are ideal for use in a variety of applications dues to their compact size and high performance. Common applications include audio volume control, antenna tuning, RF filter tuning, energy-measurement systems, audio amplifiers and electronic circuit controls.

The 3057L-1-201M is a reliable, accurate and versatile adjustable resistor which provides users with a reliable and accurate means of dividing current or voltage in a given circuit. Its compact size, high performance and long life make it the perfect choice for applications where space is at a premium and a precise electrical adjustment is needed.

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