72PMR25KLFTB

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Trimmer Potentiometers (TPT) are devices used to adjust the electrical characteristics of electrical circuits. They are typically found in systems used for controlling and monitoring electrical current, such as power supplies, digital and analog circuits, communication circuits and system controllers. The 72PMR25KLFTB is a TPT and its application field and working principle is outlined below.

Application Field

The 72PMR25KLFTB is mainly used for controlling impedance, frequency and other circuit parameters. It is a compact, high-precision, low-cost device that is suitable for a wide range of applications, such as inverters, automotive electronics, power supplies, digital and analog circuits and communication circuits. It is a single-in-line trimming potentiometer that can be embedded in a PCB and is suitable for automotive electronics, TV sets, air conditioners, ovens, home appliances and industrial control equipment such as frequency converters, inverters and motor controllers.

Working Principle

The 72PMR25KLFTB is a three-terminal device which consists of a resistor element, a terminal for selecting one of the variable values, and a terminal for adjusting the amount between the minimum and the maximum resistance value. The resistance element consists of a resistive material (cermet, linear taper, rotary taper, etc.) that is sandwiched between two contact points. When the adjustment knob is turned, the contactless ends slide along the resistive material, resulting in a change in the resistance value.

The 72PMR25KLFTB also has a switching function that can be used to select one of the variable values. When the adjustment knob is turned, a small spring-loaded switch will move to the fixed position. This switching function allows the user to select and adjust the middle variable value, which can be useful for calibration of the device. The switching function also eliminates the need for a switch in the design.

The 72PMR25KLFTB is also designed to draw a minimal amount of current, which allows for the device to be used in battery-operated systems. In addition, the device features a durable construction with a long life expectancy, making it suitable for extended use in tough environments.

The 72PMR25KLFTB is a reliable and user-friendly TPT, designed to control impedance, frequency and other circuit parameters in a range of applications such as automotive electronics, power supplies, digital and analog circuits and communication circuits. Its adjustable resistance element allows for the precise calibration of the desired values, and the spring-loaded switch ensures reliable switching action for one-variable selection.

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